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330

Thermal Conductivity Detector (TCD)

Theory of operation

6 of 24

Jun 2001

Detectors

Agilent 6890 Gas Chromatograph Service Manual

switching valve that switches paths through the TCD cell several times a

second. The switching valve oscillates between two flowpaths, one for each

channel of the TCD cell. The makeup gas line sweeps past the end of the

column and carries the column effluent into the TCD cell.

Figure 330-5

Manual TCD flow diagram

Vent

Pressure

regulators

On/off
solenoid
valves

Restrictors

Reference
switching

valve

Reference gas

Makeup gas

Makeup flow

Summary of Contents for 6890 Series

Page 1: ...6890 Series Gas Chromatograph Service Manual ...

Page 2: ...6890 Series Gas Chromatograph Service Manual ...

Page 3: ...lls attention to a condition or possible situation that could cause injury to the user CAUTION A caution calls attention to a condition or possible situation that could damage or destroy the product or the user s work See accompanying instructions for more information Indicates a hot surface Indicates hazardous voltages Indicates earth ground terminal Indicates radio active hazard Indicates explos...

Page 4: ...ector 1 Warnings 2 Heated components 2 Voltage carrying components 2 Insulation 3 Gases 3 120 Tools Required Tools required 1 Basic 1 Specialized 2 130 Calibration Notes Calibrating the 6890 GC 1 Calibration options 1 Factory calibrations 2 200 Inlets 210 Split Splitless Inlet Theory of operation 1 EPC inlet 2 Split mode operation 2 Pulsed split mode 2 Splitless mode 3 Pulsed splitless mode 4 Gas ...

Page 5: ... EPC flow manifold 17 Replacing the supply fitting on a Type 1 flow manifold 18 Leak testing EPC and manual inlets 19 Preparation 19 Performing the leak test EPC inlets 21 Performing the leak test manual inlets 24 Leak testing the EPC module only 26 Forward pressure valve leaks 27 Locating leaks on the flow manifold 27 Correcting leaks 29 Potential leak points 30 220 Purged Packed Inlet Theory of ...

Page 6: ...ration 1 EPC inlet 2 Manually controlled inlet 3 Replacement procedures 4 Replacing the inlet 4 Replacing the heater sensor assembly 7 Replacing the inlet EPC flow manifold 8 Replacing the supply fitting on a Type 1 EPC flow manifold 9 Leak testing EPC and manual inlets 10 Preparation 10 Performing the leak test EPC inlets 12 Performing the leak test manual inlets 14 Leak testing the EPC module on...

Page 7: ...bly 16 Replacing the CO2 or LN2 inlet cryo assembly 18 Replacing the PTV manifold assembly 19 Removing both the manifold and plumbing assemblies 22 Replacing the plumbing assemblies 23 Replacing a gang fitting restrictor or O ring 25 Replacing the PTV thermocouple PCB 25 Replacing the filter 26 Replacing the inlet adapter 27 Installing the column 28 Removing the septumless head 29 Cleaning the sep...

Page 8: ... 11 Replacing the EPC manifold 14 Calibrating your interface 18 Replacing the filter 19 Replacing or cleaning restrictors 20 Replacing the gang fitting 21 Leak testing the volatiles interface 22 Leak checking 22 Preparing the interface for a leak test 25 Leak testing the EPC module only 26 Forward pressure valve leaks 27 Locating leaks on the flow manifold 27 Correcting leaks 29 Potential leak are...

Page 9: ...ak testing the PCM 7 Forward pressure valve leaks 8 Locating leaks on the flow manifold 8 Correcting leaks 10 Potential leak areas 10 300 Detectors 310 Flame Ionization Detector FID Theory of operation 1 EPC detector 1 Manually controlled detector 2 Replacement procedures 4 Replacing the entire detector 4 Replacing the detector weldment 8 Replacing the collector assembly 9 Replacing the FID jet 11...

Page 10: ...ak 4 Turning hydrogen off between runs 4 Bead voltage 4 Extending the life of the bead 4 Temperature programming 5 Jets and collectors 5 Correcting NPD hardware problems 7 Replacement procedures 10 Software 10 Replacing the entire detector 10 Replacing the active element bead 13 Removing the collector assembly 16 Replacing the jet 18 Removing the electrometer 19 Removing an EPC flow manifold 20 In...

Page 11: ...tron Capture Detector ECD Theory of operation 1 EPC detector 2 Manually controlled detector 2 Replacement procedures 4 Replacing the entire detector detector cell 4 Replacing the heater sensor assembly 8 Replacing the makeup gas adapter 10 Removing the EPC flow manifold 11 Removing the signal board 14 Replacing the detector interface card 16 Diagnostics 17 Frequency test 17 Leak test 18 Troublesho...

Page 12: ...2 Frequency test 22 Leak test 23 Maintaining a µ ECD detector 25 µ ECD bakeout thermal cleaning 25 Performing a radioactivity leak test wipe test 26 350 Flame Photometric Detector FPD Theory of operation 1 Single wavelength FPD 2 Dual wavelength FPD 3 Operating conditions 3 Replacement procedures 4 Replacing the entire detector 4 Column installation 6 Cleaning replacing windows filters and seals 8...

Page 13: ...nstalling a type 2 manifold 6 Changing an auxiliary channel frit 14 400 Mainframe 410 Covers and Fans Plastic covers 1 Metal covers 2 Removing the electronics cover 3 Removing the detector cover 4 Replacing the detector top cover 6 Removing the pneumatics top cover 8 Removing the pneumatics RFI shielding 8 Removing the left side cover 9 Removing the right side cover 10 Removing the ALS tray bracke...

Page 14: ...lacing an existing cryo valve 7 Replacing the oven shroud assembly 10 Replacing the oven sensor 13 Replacing the oven fan 14 Replacing the oven fan motor 15 Replacing the oven flap motor 17 Converting the oven type 19 Configuring the oven 19 430 Power Electronics Replacement Replacing the main board 1 Installing an MIO card 6890A and 6890 Plus 7 Replacing ROMs on the main board 6890A and 6890 Plus...

Page 15: ... Gases Gas requirements 1 Gases for packed columns 1 Gases for capillary columns 2 Gas purity 4 The gas plumbing 5 Supply tubing for carrier and detector gases 6 Two stage pressure regulators 7 Pressure regulator gas supply tubing connections 7 Traps 8 Cryogenic cooling requirements 9 Choosing a coolant 9 Using carbon dioxide 10 Using liquid nitrogen 12 Supplying valve actuator air 13 530 Power Gr...

Page 16: ...etectors 4 FID 4 NPD 4 TCD 5 ECD 5 µ ECD 5 FPD 5 AED 5 MSD 5 600 Performance Verification 610 Checkout Chromatograms FID checkout conditions and chromatogram 2 Typical values 5 NPD checkout conditions and chromatogram 6 Typical values 9 TCD checkout conditions and chromatogram 10 Typical values 13 ECD checkout conditions and chromatogram 14 Typical values 17 Microcell ECD checkout conditions and c...

Page 17: ... Internal Diagnostics 810 Overview Error message types 1 Not ready 1 Method mismatch 1 Warnings 2 Shutdowns 2 Faults 2 Bad mainboard and fatal errors 2 820 Not Ready Messages Oven temperature not ready 1 Temperature zone not ready 2 Pressure and or flow not ready 3 Detector not ready 4 Valve not ready 7 Miscellaneous messages 8 ...

Page 18: ...s 6890A and 6890 Plus Overview of 6890 GC cable connections 1 6890 GC GC ChemStation GC Automatic Liquid Sampler 2 6890 GC Mass Selective Detector GC ChemStation GC Automatic Liquid Sampler 3 6890 GC GC Automatic Liquid Sampler Non Agilent Data System 4 6890 GC 3396B C INET Integrator GC Automatic Liquid Sampler Modem 5 6890 GC 3395A 3396B Integrator GC Automatic Liquid Sampler 6 6890 GC 3395B 339...

Page 19: ...pler Non INET Integrator 11 6890 GC 7694 Headspace Sampler 12 6890 GC External Events an unspecified non Agilent instrument 13 6890 GC G1900A Purge and Trap 14 1015 Cabling Diagrams 6890N Overview of 6890N GC cable connections 1 6890N GC GC ChemStation Cerity GC Automatic Liquid Sampler 2 6890N GC Mass Selective Detector GC ChemStation GC Automatic Liquid Sampler 3 6890N GC GC Automatic Liquid Sam...

Page 20: ...mpler 10 6890N GC External Events an unspecified non Agilent instrument 11 6890N GC G1900A Purge and Trap 13 6890N GC Mass Selective Detector GC ChemStation Cerity Headspace Sampler 14 1020 Cable Electronics Analog signal outputs 1 Analog cable GC to 3395A B or 3396B C Integrators and 35900 C D E Analog to Digital Interface instrument 1 Analog cable general use 2 Automatic sampler 6890A GC 3 Cable...

Page 21: ...35900C D E MSD Sampler 2 meters 14 Cable pinouts 6890 GC to 3395A 3396B Integrator 15 Cable pinouts 6890 GC to 3395B 3396C Integrator 16 Cable pinouts 6890 GC to 7694 Headspace Sampler 17 Cable pinouts APG Remote Y cable 18 1100 Valves 1110 Valves Introduction 1 Valco W series minivalves 2 Valve bodies 3 Valve rotors 3 General purpose valves 4 Gas sample valves 4 Gas sample loops 4 Adjustable rest...

Page 22: ... 1 Loss of sensitivity or excessive drift 2 Loss of peaks in specific areas of the chromatogram 2 Extraneous peaks 3 Peak broadening and tailing 3 Baseline shifts 3 Baseline upsets 4 Variation in peak area and retention time 4 Pressure check 5 1200 Electrical 1210 External Connectors 6890A and 6890 Plus Overview 1 Signal 1 Signal 2 analog out 3 APG remote start stop 4 Signal descriptions 5 APG rem...

Page 23: ...al descriptions 7 Remote control 8 External event 9 BCD inputs 10 1220 Main Board 6890A and 6890 Plus Test points 1 Connector electronics 2 Fuses 5 Circuitry diagrams 6 1225 Main Board 6890N General board layout 1 Connectors 3 Fuses 5 1230 Power Supply Setting the instrument power configuration 1 Line voltage configuration plug 2 Ceramic fuses 2 Oven shroud 3 Replaceable AC board fuses 4 AC power ...

Page 24: ...le 9 Capillary injection port 0 to 30 psig 11 Capillary injection port subassembly 0 to 30 psig 11 Purged packed inlet 12 Purged packed inlet EPC pneumatic module 14 Purged packed inlet manual pneumatic module and inlet 16 Packed Inlet Optional Flow Restrictors 16 Packed column injection port supplies 18 Programmable cool on column capillary inlet 19 Programmable cool on column EPC pneumatic modul...

Page 25: ...cell Electron Capture Detector manifold assembly 20 Flame Photometric Detector FPD 22 Flame Photometric Detector jet and transfer tube assemblies 24 Flame Photometric Detector PMT and bracket assemblies 26 Flame Photometric Detector covers manifolds and electronics 28 Auxiliary flow block 30 1330 Covers Metal covers 2 Plastic covers 4 Manual inlet flow manifold carrier G1585A accessory 6 1340 Oven...

Page 26: ... 4 Main circuit board 6890A and 6890 Plus 6 Main circuit board 6890N 8 Modular input output MIO components 6890A and 6890 Plus 9 INET components 9 LAN components 9 Pneumatics circuit boards 11 Analog input board G1556A accessory 13 LAN board 6890N 14 Chassis fans 15 Chassis fans 15 ALS interface board G2612A accessory 6890 Plus only 16 Index ...

Page 27: ...24 of 24 Jun 2001 Contents Contents Agilent 6890 Gas Chromatograph Service Manual ...

Page 28: ...100 Before Servicing the Instrument Safety precautions prerequisites to service and calibration information 110 Safety 120 Tools Required 130 Calibration Notes ...

Page 29: ......

Page 30: ...PrintedCircuit Boards always place them in static control envelopes or enclosures Always make sure you are properly grounded e g wearing an ESD strap before handling electro static sensitive components such as printed circuit boards Voltage carrying components When disconnecting plugs pull on the plug not its wires Pulling on the wires may cause breakage Columns Do not shut off column flow when th...

Page 31: ... components that have not fully cooled wear protective gloves Voltage carrying components Whenever possible disconnect the 6890 GC from its power source before working on or near voltage carrying components of the GC The following components carry voltage when the GC is plugged in even if the power switch is off The AC power cord The AC power supply When the power to the GC is turned on potentiall...

Page 32: ... hydrogen before working on pneumatic areas of the instrument Wear eye protection when using compressed gases to dry or clean GC components Hydrogen gas is flammable and potentially explosive When possible turn off hydrogen gas when servicing detectors that use it If this is not possible make sure that either a column is installed in the oven or that the detector column fitting is capped Otherwise...

Page 33: ...110 Safety Warnings 4 of 4 Jun 2001 Before Servicing the Instrument Agilent 6890 Gas Chromatograph Service Manual ...

Page 34: ... The following tools are required to perform the service procedures described in this manual Basic Electrostatic discharge ESD protective wrist strap T 10 Torx screwdriver T 20 Torx screwdriver 1 4 inch hex nut driver Open end wrenches 5 16 inch x 1 4 inch 1 2 inch x 7 16 inch 9 16 inch x 7 16 inch 7 mm hex nut driver Tweezers ...

Page 35: ...s AMP part no 821903 1 Agilent part no 8710 2303 EPC Leak Test kit part no G1530 60960 Consisting of EPC inlet jumper block G1530 80800 EPC detector plug block G1530 80810 FID NPD jet plug G1530 20610 Module extender cable G1530 61370 Torx T 10 screws M3 x 25 mm 0515 0683 Solid Vespel plugs 1 16 inch Solid Vespel plugs 1 8 inch Capillary column nuts Non greased O rings TCD ECD exit fitting plug 1 ...

Page 36: ...er the end of a run Auto flow zero shuts down the flow of gases to an inlet waits for the flow to drop to zero measures and stores the flow sensor output and turns the gas back on This takes about two seconds The zero offset is used to correct future flow measurements Pressure sensors can be zeroed by fully depressurizing the system inlets or detectors Open appropriate fittings to ensure that ther...

Page 37: ...ns Whenever a user calibrated value is used the time and date of calibration is listed rather than the factory calibration message To return to factory calibrations the user calibration can be either completely deleted using the Delete key or can simply be turned Off to retain it in memory Recovery of user calibrations can be obtained by pressing the On key ...

Page 38: ... and manual inlets on the 6890 gas chromatograph 210 Split Splitless Inlet 220 Purged Packed Inlet 230 Cool On Column Inlet 240 Programmed Temperature Vaporization Inlet PTV 250 Volatiles Interface 260 Solvent Vapor Exit Accessory 270 Pneumatics Control Module ...

Page 39: ......

Page 40: ...olumn and an inlet vent Typical split ratios used are 20 1 up to 500 1 where the majority of sample is vented out the inlet split vent The splitless mode of operation is generally used for trace analysis In trace analysis sample splitting would further dilute the amount of analyte entering the column and is not desired In splitless mode nearly all the analyte and solvent enter the column To avoid ...

Page 41: ...o control the septum purge flow Figure 210 1 EPC control split mode flow diagram 100 1 split ratio Pulsed split mode For EPC inlets in this configuration the split flow and the column pressure flow are programmed up to a higher value prior to sample injection The Flow limiting frit PV1 Proportional valve1 Total flow control loop Flow sensor Septum holder Pressure sensor Septum purge regulator not ...

Page 42: ... returned to the lower flows selected for best chromatography Splitless mode For an EPC inlet during splitless injections PV1 is used to control the inlet pressure as measured by PS V is an on off valve which is turned off so there is no flow out of the split vent PV2 is turned on at a nominal value so that there is no back pressure on V FS will still be measuring flow but it is no longer used to ...

Page 43: ...zes sample losses in glass liners Gas saver mode For EPC inlets Gas Saver mode may be used in splitless or split mode of operation for conservation of split and inlet purge flows when not in use or in between runs A gas saver flow rate and start time can be set independently of normal flow rates being used Flow limiting frit PV1 Proportional valve 1 Flow sensor Septum holder Pressure sensor Septum...

Page 44: ...manually controlled back pressure regulator in the split vent path controlling the inlet pressure and thus flow through the column SPR is a manually controlled septum purge regulator used to control the septum purge flow This flow is set to approximately 3 0 mL minute for operation Figure 210 3 Manual control split mode flow diagram 100 1 split ratio Total Flow Control Septum holder Septum purge r...

Page 45: ...itches prior to injection to divert the higher part of the flow across the top of the liner through the PCV and out the inlet split vent At a user specified time after injection the valve switches back to split mode see Split mode to purge remaining sample vapor out of the inlet split vent V2 is a manually controlled back pressure regulator in the split vent path controlling the inlet pressure and...

Page 46: ...lled inlet Figure 210 4 Manual control splitless mode flow diagram pre run to purge time Total Flow Control Septum holder Septum purge regulator Septum purge 3 mL min Inlet Vent Flow split 100 mL min Inlet pressure control Purge Control Valve PCV To Detector 1 mL min Column Flow 1 m L m i n 104 mL min V1 SPR V2 ...

Page 47: ...m inside the oven remove the column and column fitting from the bottom of the inlet 2 Remove the left side cover from the GC 3 From the top of the 6890 GC remove the blue inlet carrier cover or the tray bracket if installed 4 Unclip the heater sensor leads from the connector to the left of the inlet carrier 5 Unscrew the top insert assembly large inlet nut and flow lines on the top of the inlet th...

Page 48: ...cs module b Follow the split vent flow line back from the pneumatics block and disconnect the line from the split vent trap c Remove the carrier and septum purge lines from the left side of the GC For non EPC inlets a Unscrew the top insert assembly large inlet nut and flow lines on the top of the inlet that has the carrier gas and septum purge lines plumbed to it Raise this assembly up and away f...

Page 49: ...e Manual 4 Pull the inlet up out of the inlet carrier If necessary you can also slide the insulation sleeve off of the bottom of the inlet Figure 210 6 Removing the heater sensor assembly Captured Torx T 20 screw Upper insulation Heat sink Thermal nut Lower seal Thrust washer Reducing nut Heater sensor Torx T 20 ...

Page 50: ...rew and washer from the top of the heat sink and slide the heater sensor elements out of the heat sink 5 Replace the heater sensor assembly being careful not to damage the sensor Replace the washer T 20 screw and reassemble the rest of the inlet Reinstalling the inlet 1 Make sure the heater sensor assemblyis installedand the inlet insulation sleeve is in place 2 Install a columnnut and blank ferru...

Page 51: ... inlet weldment plate 6 Tuck the service loop of the septum purge and carrier gas lines under the tabs on the left side of the GC 7 Seat the heater sensor leads into the channel on the inlet carrier 8 Reconnect theheater sensor assembly intotheprovidedconnector front or back on the left side of the GC 9 Reinstall the insulated thermal cup and insulation in the GC oven Side view of inlet nut weldme...

Page 52: ...let cover or tray bracket Replacing the split vent trap For GCs manufactured before May 1997 the split vent trap part no G1544 80550 or EPC units can be replaced by the Replacement Split Vent Trap kit part no G1544 60610 The new split vent trap uses a replaceable filter cartridge which is sold in a package of 2 each part no G1544 80530 To replace the filter cartridge in the trap see Replacing the ...

Page 53: ...ARNING Turn off the oven and turn off the heater of the inlet you are replacing and let them cool down Turn off all detector flows Turn off the carrier gas supply pressure then turn off the main power switch and unplug the power cord 1 Disconnect the spit vent trap line from the inlet assembly Split vent back weldment Replacement filter kit Split vent front weldment Filter cartridge O rings 2 ...

Page 54: ...anifold Disconnect the plastic fitting and remove the old trap assembly and connected plumbing Replacing the split vent trap filter cartridge 1 Turn off the inlet and the oven and allow to cool 2 Set all GC flows to zero 3 Remove the pneumatics cover 4 Lift the filter trap assembly form the mounting bracket and unscrew the filter trap assembly 5 Remove the old filter cartridge and O rings and repl...

Page 55: ...210 Split Splitless Inlet Replacement procedures 16 of 30 Jun 2001 Inlets Agilent 6890 Gas Chromatograph Service Manual 6 Reassemble the trap ...

Page 56: ...ets and the ECD detector in the 6890 GC use Type 1 flow manifolds 1 Shut off the main gas supply to the manifold and remove the 1 8 inch Swagelok fitting for the gas supply 2 Remove the plastic detector cover and the plastic pneumatics cover 3 Remove the metal RFI shield and the rear top cover on the back of the GC 4 Disconnect the ribbon cable for the module from the main EPC board The adjacent r...

Page 57: ...e back of the GC 7 Reinstallation is the reverse of removal Replacing the supply fitting on a Type 1 flow manifold Carrier gas enters an inlet EPC flow manifold through a fritted stainless steel fitting If the frit in this fitting clogs and cannot be cleaned replace the assembly as a whole Remove the two screws attaching the fitting to the manifold replace the O ring behind the fitting and install...

Page 58: ...known replace them now Figure 210 13 Location of septum liner O ring and lower inlet seal 4 Cap the septum purge vent and the inlet s column fitting Use solid no hole Vespel type ferrules 1 8 inch part no 0100 1372 and 1 16 inch part no 5181 7458 with a 1 8 inch Swagelok nut part no 5180 4103 and a capillary column nut Note As alternate capping devices a 1 8 inch Swagelok cap can be used for the s...

Page 59: ...ograph Service Manual Figure 210 14 Capping the bottom of the inlet and septum purge vent Note Makesurethat thecarrier gas source pressure is at least 35 psi Carrier source pressure should always be at least 10 psi greater than the desired inlet pressure Manual EPC Split vent Septum purge vent Septum purge vent ...

Page 60: ...and manual inlets Performing the leak test EPC inlets Note Be sure to complete all of the preparation steps on pages 20 and 21 before continuing 1 Set the inlet to Split Mode 2 Configure the column as 0 length Press Mode Type Press Config Column 1 or Config Column 2 and enter 0 in the first column of the Dim field ...

Page 61: ...e leak is present in the system or the supply pressure is not high enough 6 After 10 minutes turn the inlet pressure Off Press Front Inlet or Back Inlet scroll to the Pressure field and press Off Both the flow controller and the back pressure valves will close Note When the inlet pressure or flow is turned off the safety shutdown feature including the audible alarm is not functional The inlet will...

Page 62: ... 5 psi pressure loss approximately 0 05 psi min consider the system leak tight If pressure loss is much greater than 0 5 psi there is a leak that must be found and corrected Note however that you may want to slightly decrease the leak test time based on the internal inlet volume which changes with the liner type used smaller volumes shorter acceptable leak test times See Correcting leaks later in ...

Page 63: ...e split vent Use a flow meter to verify this flow rate 2 Turn the column head pressure controller clockwise until the column head pressure reaches 25 psi Figure 210 15 Manual flow panel 3 Wait approximately 15 seconds for equilibration If pressure cannot be achieved either a very large leak is present in the system or the supply pressure is not high enough 4 Shut off the flow controller by turning...

Page 64: ...ed and monitor the column head pressure gauge for 10 minutes If there is less than 0 5 psi pressure loss approximately 0 05 psi min consider the system leak tight If pressure loss is much greater than 0 5 psi there is a leak that must be found and corrected See Correcting leaks later in this section 6 When the system is considered leak tight the caps may be removed the column reinstalled and the s...

Page 65: ...530 20660 from the leak test kit part no G1530 60960 Make sure you install O rings if needed between the block and the EPC module to create a seal The leak test block is a special fitting that plumbs the carrier gas coming out of the module directly back into the septum purge and split vent flow paths on the module It allows the carrier gas septum purge and split vent line to function normally as ...

Page 66: ... the fitting with a solid 1 8 inch Vespel plug and a Swagelok nut 2 Check the actual pressure on the display and monitor it for 5 minutes Pressure loss should not be greater than 0 5 psi Locating leaks on the flow manifold If the EPC module appears to have a leak you can remove it to locate the leaky component The leak test kit part no G1530 60960 contains a longer ribbon cable to allow you to lay...

Page 67: ...PC board Reconnect the gas supply and turn on the main power switch Set the pressure to 25 psi and the flow to 60 mL min 7 Lay the EPC module on the lab bench and use an electronic leak detector to locate the leaky component on the module Figure 210 16 Leak testing the EPC module on the lab bench 8 If the leaky component is serviceable such as a vent inlet fitting see diagram of serviceable parts ...

Page 68: ... leak 2 Tighten loose connections to correct leaks if necessary You may need to repeat the leak test 3 If the pressure drop is now 1 0 or less you can consider the inlet system leak free If the pressure drops faster than the acceptable rate continue to search for leaks and repeat the pressure test Aluminum bracket O rings Supply fitting O ring Inlet split vent fitting Septum purge fitting CAUTION ...

Page 69: ...oints Check the following areas when checking an inlet system for leaks In the oven Make sure the bottom of the inlet is correctly capped On the inlet Septum O ring in top of inlet Lower inlet seal at bottom of inlet At EPC module Three O rings behind block where the inlet s pneumatic lines enter module Two O rings for each valve Septum purge cap ...

Page 70: ...ortion ofthe stream enterstheinletinsert andis transferred into the column The remaining small portion of the flow stream is vented out the purge vent flow line EPC purged packed inlets can be either flow controlled or pressure controlled depending on whether a capillary column s dimensions are configured within the instrument If configured with a capillary column dimension the column is pressure ...

Page 71: ...ol mode recommended for capillary columns The pressure controlled mode shown above is used when capillary column dimensions are configured in the 6890 GC Flow limiting frit Proportional valve PV1 Flow sensor Pressure sensor Septum holder Septum purge regulator not adjustable Total flow control loop To Column and Detector Purge Vent Flow 1 0 mL min FS PS SPR Flow limiting frit Proportional valve PV...

Page 72: ... of the inlet The septum purge regulator SPR in the septum purge line determines the fraction of the stream that is split off to purge the septum This fraction of the stream then flows out through the purge vent The majority of the carrier stream enters the inlet insert and then the column Figure 220 3 Manual control packed column inlet flow control mode Septum holder Septum purge regulator Purge ...

Page 73: ...supply pressure Then turn off the main power switch and unplug the power cord 1 Disconnect the column from the bottom of the inlet 2 Remove the thermal cup and insulation from the bottom of the inlet column fitting 3 Remove the inlet liner insert by loosening the 1 4 inch nut on the inlet liner The metal bottom plate on the oven ceiling does not need to be removed Figure 220 4 Removing the column ...

Page 74: ... side of the instrument EPC inlets The inlet plumbing terminates in a pneumatics block connected to the EPC flow manifold with one Torx T 10 screw Non EPC inlets The inlet plumbing terminates in a pneumatics block connected with a Torx T 10 screw to a similar mating block on the left side of the instrument Figure 220 5 Disconnecting the inlet plumbing block EPC inlet 6 Remove the top inlet plate t...

Page 75: ...6890 Gas Chromatograph Service Manual 8 Lift the inlet out of the instrument Figure 220 6 Removing the top inlet plate 9 If you need to remove the thermal block slide off the insulation sleeve and use a wrench to remove the bottom nut Slide the thermal block off the inlet weldment ...

Page 76: ...lets Agilent 6890 Gas Chromatograph Service Manual Purged Packed Inlet 220 Replacement procedures Figure 220 7 Removing the thermal block 10 Reinstallation is the reverse of removal Inlet weldment Thermal block Bottom nut ...

Page 77: ...and the ECD detector in the 6890 GC use Type 1 flow modules 1 Shut off the main gas supply to the manifold and remove the 1 8 inch Swagelok fitting for the gas supply 2 Remove the plastic detector cover and the plastic pneumatics cover 3 Remove the metal RFI shield and the rear cover on the back of the GC 4 Disconnect the ribbon cable for the manifold from the main EPC board You may have to remove...

Page 78: ...ew 6 Remove the long screw Torx T 20 from the top of the manifold and slide the manifold out of the back of the GC 7 Reinstallation is the reverse of removal Replacing the supply fitting on a Type 1 EPC manifold The same replacement procedure is used to replace the supply fitting on any of the inlet flow inlet manifolds used in the 6890 GC See Split Splitless Inlet for the detailed procedure ...

Page 79: ...them now Figure 220 9 Location of septum liner O ring and lower inlet seal 4 Cap the septum purge vent and the inlet s column fitting Use solid no hole Vespel type ferrules 1 8 inch part no 0100 1372 and 1 16 inch part no 5181 7458 with a 1 8 inch Swagelok nut part no 5180 4103 and a capillary column nut Note As alternate capping devices a 1 8 inch Swagelok cap can be used for the septum purge ven...

Page 80: ...ng EPC and manual inlets Figure 220 10 Capping the bottom of the inlet and septum purge vent Note Make sure that the carriergas source pressure is at least 35 psi Carrier source pressure should always be at least 10 psi greater than the desired inlet pressure Septum purge vent Manual EPC Septum purge vent ...

Page 81: ...testing Press Column 1 or Column 2 and enter a length and diameter in the Dim row This places the system in pressure control mode rather than in flow control mode 2 Set the pressure to 25 psi on the keypad Press Front Inlet or Back Inlet and enter 25 in the Pressure field 3 Wait approximately 15 seconds for equilibration If pressure cannot be achieved either a very large leak is present in the sys...

Page 82: ...tart timing then toggle between the time and the pressure reading with the Time and the Front Inlet Back Inlet keys If there is less than 0 7 psi pressure loss 0 07 psi min consider the system leak tight If pressure loss is much greater than 0 7 psi there is a leak that must be found and corrected See Correcting leaks later in this section 6 When the system is considered leak tight the caps may be...

Page 83: ... six turns counter clockwise The pressure gauge will increase to a value less than the supply pressure 3 Wait 10 minutes for pressure equilibration The gauge on the front panel should be stable 4 After 10 minutes shut off the column head pressure by turning the flow controller full clockwise Do not overtighten or you will damage the valve seat Figure 220 11 Inlet manifold 5 Monitor the pressure ga...

Page 84: ...eful not to lose the O rings between the block and the module 3 Replace the inlet s plumbing block with the leak test block part no G1530 20660 from the leak test kit part no G1530 60960 Make sure you install O rings between the block and the EPC module to create a seal The leak test block is a special fitting that plumbs the carrier gas coming out of the module directly back into the septum purge...

Page 85: ...should not be greater than 0 5 psi Locating leaks on the flow manifold If the EPC module appears to have a leak you can remove it to locate the leaky component The leak test kit part no G1530 60960 contains a longer ribbon cable to allow you to lay the EPC module on the benchtop for testing Caution Be sure to wear an ESD strap grounded to the 6890 GC chassis while performing this procedure 1 Turn ...

Page 86: ...PC module on the lab bench and use an electronic leak detector to locate the leaky component on the module Figure 220 12 Leak testing the EPC module on the lab bench 8 If the leaky component is serviceable such as vent inlet fittings see Figure 220 13 swap it out Otherwise replace the EPC module Ribbon cable from leak test kit To gas supply ...

Page 87: ...sources of a leak 2 Tighten loose connections to correct leaks if necessary You may need to repeat the leak test 3 If the pressure drop is now 1 0 psi or less you can consider the inlet system leak free If the pressure drop is much greater than this continue to search for leaks and repeat the pressure test Aluminum bracket O rings Supply fitting O ring Septum purge fitting Caution Aluminum bracket...

Page 88: ...the following areas when checking an inlet system for leaks In the oven Make sure the bottom of the inlet is correctly capped On the inlet Septum O ring under inlet septum fitting at top of inlet Liner ferrule seal at bottom of inlet At EPC module Three O rings behind block where inlet pneumatic lines enter module Two O rings for each valve Septum purge cap ...

Page 89: ...220 Purged Packed Inlet Leak testing EPC and manual inlets 20 of 20 Jun 2001 Inlets Agilent 6890 Gas Chromatograph Service Manual ...

Page 90: ...ry of operation At injection liquid sample is introduced directly into the column For manual injections a duckbill valve isolation valve uses inlet pressure to create a pneumatic seal around the needle For automatic injections the duckbill valve is replaced with a septum and nut and the septum maintains the pressure seal For both manual and EPC inlets the flow paths are the same the flow is divide...

Page 91: ...with the proportional valve forms a closed loop electronically controlled system In addition a flow limiting frit 750 mL min at 50 psi is located at the pneumatics entrance A septum purge regulator SPR maintains septum purge flow between 7 and 15 mL min Figure 230 1 EPC control Flow limiting frit Proportional valve Pressure sensor Septum holder Septum purge regulator not adjustable PS SPR Inlet pr...

Page 92: ...ulator FPR that controls the column flow rate In addition a forward pressure regulator with a fixed restrictor SPR is used to provide a nominal septum purge flow rate of 15 0 mL min The sample is deposited directly into a capillary column for analysis Figure 230 2 Manual control Forward pressure regulator Septum holder Septum purge regulator SPR Purge Vent Flow To Detector Spring and alignment ins...

Page 93: ...he 6890 GC remove the blue inlet carrier cover or the tray bracket if installed and the left side cover 3 Unclip the heater sensor leads from the connector to the left of the inlet carrier 4 Disconnect the inlet plumbing and reroute the plumbing from underneath the tabs on the left side of the instrument EPC inlets The inlet plumbing terminates in a pneumatics block connected to the EPC flow manif...

Page 94: ...h Service Manual Cool On Column Inlet 230 Replacement procedures Figure 230 3 Disconnecting the inlet plumbing block EPC inlets 5 Use a Torx T 20 screwdriver toloosen the three captive screws that attach the inlet weldment to the top of the inlet carrier ...

Page 95: ...ograph Service Manual Figure 230 4 Removing the inlet from the top of the GC 6 Slide the inlet up out of the inlet carrier If necessary you can also slide the insulation sleeve off of the bottom of the inlet 7 Reinstallation is the reverse of removal Heater sensor assembly Captive screw Insulation ...

Page 96: ...pressure then turn off the main power switch and unplug the power cord 1 If necessary remove the septum nut cooling tower and or needle guide to provide access to the two screws in the top of the cooling fin Note If desired you can remove the entire inlet for better access Figure 230 5 Removing the heater sensor assembly from the top of the GC 2 Remove the two Torx T 20 screws securing the cooling...

Page 97: ...the weldment Replacing the inlet EPC flow manifold WARNING Turn off the oven and turn off the inlet you are replacing and let them cool down Turn off the carrier gas supply pressure then turn off the main power switch and unplug the power cord All EPC inlets and the ECD detector in the 6890 GC use Type 1 flow manifolds 1 Remove the plastic detector cover and the plastic pneumatics cover 2 Remove t...

Page 98: ...h Swagelok fitting for the gas supply 5 Remove the plumbing block from the front of the manifold one Torx T 10 screw 6 Remove the long screw Torx T 20 from the top of the manifold and slide the manifold out of the back of the GC 7 Reinstallation is the reverse of removal Replacing the supply fitting on a Type 1 EPC flow manifold See Split Splitless Inlet for the detailed procedure ...

Page 99: ...230 7 Location of septum 4 Cap the septum purge vent and the inlet s column fitting Use solid no hole Vespel type ferrules 1 8 inch part no 0100 1372 and 1 16 inch part no 5181 7458 with a 1 8 inch Swagelok nut part no 5180 4103 and a capillary column nut Note As alternate capping devices a 1 8 inch Swagelok cap can be used for the septum purge vent and a capillary column nut with a solid piece of...

Page 100: ...sting EPC and manual inlets Figure 230 8 Capping the bottom of the inlet and septum purge vent Note Make sure that the carrier gas source pressure is at least 35 psi Carrier source pressure should always be at least 10 psi greater than the desired inlet pressure Septum purge vent Septum purge Manual EPC ...

Page 101: ...et the inlet pressure to 25 psi on the keypad 2 Wait approximately 15 seconds for equilibration If pressure cannot be achieved either a very large leak is present in the system or the supply pressure is not high enough 3 Turn the inlet pressure Off 4 Note the Actual reading on the display and monitor the pressure for 10 minutes Press Front Inlet or Back Inlet Move to the Pressure field and enter 2...

Page 102: ...e and the pressure reading with the Time and the Front Inlet Back Inlet keys If there is less than 1 0 psi pressure loss approximately 0 1 psi min consider the system leak tight If pressure loss is much greater than1 0 psi there is a leak that must be found and corrected See Correcting leaks later in this section 5 When the system is considered leak tight the caps may be removed the column reinsta...

Page 103: ... on the front panel should be stable 3 After 10 minutes shut off the column head pressure by turning the pressure controller full counter clockwise Figure 230 9 Inlet manifold 4 Monitor the pressure gauge for 5 minutes If there is less than 0 5 psi pressure loss approximately 0 1 psi min consider the system leak tight If pressure loss is much greater than 0 5 psi there is a leak that must be found...

Page 104: ... EPC module to create a seal The leak test block is a special fitting that plumbs the carrier gas coming out of the module directly back into the septum purge flow path on the module It allows the carrier gas and septum purge to function normally as if an inlet were present 4 Perform the normal leak test for the EPC inlet as described previously in this section With the inlet removed the internal ...

Page 105: ... switch 2 Disconnect the carrier supply tubing on the inlet fitting 3 Remove the top plastic pneumatics cover and the detector cover 4 Remove the RFI shield and the top rear cover on the GC 5 Disconnect the ribbon cable for the module from the main EPC board You may have to remove the adjacent ribbon cable also 6 Use a Torx T 20 screwdriver to remove the screw from the top of the module and slide ...

Page 106: ...ing EPC and manual inlets Figure 230 10 Leak testing the EPC module on the lab bench 10 If the leaky component is serviceable such as vent inlet fittings see the following diagram of serviceable parts Figure 230 11 replace them Otherwise replace the EPC module To gas supply Ribbon cable from leak test kit ...

Page 107: ...s of a leak 2 Tighten loose connections to correct leaks if necessary You may need to repeat the leak test 3 If the pressure drop is now 0 5 psi or less you can consider the inlet system leak free If the pressure drops faster than the acceptable rate continue to search for leaks and repeat the pressure test Aluminum bracket Supply fitting O ring Septum purge fitting Caution Aluminum bracket remove...

Page 108: ...anual inlets Potential leak points Check the following areas when checking an inlet system for leaks In the oven Make sure the bottom of the inlet is correctly capped On the inlet Septum At EPC module Three O rings behind block where pneumatic lines enter module Two O rings for each valve Septum purge cap Inlet fitting ...

Page 109: ...230 Cool On Column Inlet Leak testing EPC and manual inlets 20 of 20 Jun 2001 Inlets Agilent 6890 Gas Chromatograph Service Manual ...

Page 110: ...With the solvent gone the liner volume can be used for another injection Injection can be repeated several times to concentrate the analytes from a large sample volume After injection and solvent removal the analytes are transferred to the column This can replace the need for offline reconcentrating and minimize loss of sample Operating modes The Agilent Programmed Temperature Vaporization PTV Inl...

Page 111: ...gular septum or a Merlin microseal to seal the syringe passage A stream of gas sweeps the inner side of the septum and exits through the septum purge vent on the pneumatics module It may be used with either automatic or manual injection The septumless head uses a check valve instead of a septum to seal the syringe entrance passage It may be used with either automatic or manual injection ...

Page 112: ...ratio of the split vent flow to the column flow is called the split ratio Figure 240 1 shows the inlet flow control Overall carrier and sample gas flow is controlled by the first proportional valve and the flow sensor The solenoid valve is open and proportional valve 2 acts as a back pressure regulator controlled by the pressure sensor on the septum purge vent line Figure 240 1 Split mode flow con...

Page 113: ...ess head the flows are the same as in the septum head except the septum purge vent is bypassed directly to the carrier flow through the gang fitting on the flow manifold Flow control is the same as for the septum head See Figure 240 2 Figure 240 2 Split mode flow control diagram septumless head installed SPR vent PS SPR PV1 PV2 Total flow control loop Flow limiting frit To detector FS Split vent T...

Page 114: ...des Pulsed split modes The pressure pulse modes using the septum or septumless head increase inlet pressure just before the beginning of a run and return it to the normal value after a specified time The pulse sweeps the sample out of the inlet and into the column faster reducing the chance for sample decomposition in the inlet ...

Page 115: ... the valve opens to sweep vapors left in the liner out the split vent to prevent solvent tailing due to the large inlet volume and small column flow rate Figure 240 3 shows theinlet flow control during injection and sample transfer with the septum head installed The flow sensor measures the flow rate but the pressure sensor on the septum purge line controls the column head pressure using proportio...

Page 116: ...or the septum head Figure 240 3 Splitless mode flow control diagram sample injection After the injection the solenoid valve opens and the flow control is the same as during split mode operation See Figure 240 1 or Figure 240 2 SPR vent Split vent SPR PS FS PV1 PV2 Flow limiting frit Column head pressure control loop Cryo valve To detector Septum holder Trap Temperature conversion board Valve close...

Page 117: ...d splitless mode The pressure pulse modes using the septum or septumless head increase inlet pressure just before the beginning of a run and return it to the normal value after a specified amount of time The pressure pulse sweeps the sample out of the inlet and into the column faster reducing the chance for sample decomposition in the inlet ...

Page 118: ...ut the vent while the sample deposits on the liner walls or packing If conditions are properly chosen and the sample is suitable analytes deposit in the inlet liner while the solvent evaporates and is swept out Large or multiple injections can be used to concentrate sample in the inlet before transferring it to the column for analysis Figure 240 4 shows the inlet flow control with the septum head ...

Page 119: ...ervice Manual gang fitting on the flow manifold Flow control is the same as for the septum head Figure 240 4 Solvent vent mode flow control diagram sample and vent SPR vent Split vent SPR FS PS PV1 PV2 Flow limiting frit Total flow control loop Septum holder To detector Cryo valve Trap Temperature conversion board Valve open ...

Page 120: ...t venting ends the solenoid valve closes and the inlet heats to the final temperature The sample transfers onto the capillary column Figure 240 5 Solvent vent mode flow control diagram sample transfer Split vent SPR vent SPR PS FS PV1 PV2 Flow limiting frit Column head pressure control loop Septum holder Solenoid valve closed Cryo valve To detector PTV thermocouple PCB Trap ...

Page 121: ...oid valve opens again and the system returns to the Stage 1 configuration but with different setpoints The PTV inlet is flushed through the split vent Figure 240 6 Solvent vent mode flow control diagram purge and cleanup Split vent SPR vent Septum holder To detector Flow limiting frit Total flow control loop PS SPR PV1 PV2 FS Cryo valve PTV thermocouple PCB Trap Valve open ...

Page 122: ...mless The cryo shroud on the inlet body CO2 or liquid nitrogen The PTV thermocouple PCB The O rings and restrictors in the gang fitting assembly Replacing the PTV inlet pneumatics and manifold The entire PTV assembly can be easily replaced 1 Turn off the oven and the inlet and allow them to cool WARNING Turn off the oven and the inlet and allow them to cool Turn off all flows at the initial gas su...

Page 123: ... procedures 14 of 46 Jun 2001 Inlets Agilent 6890 Gas Chromatograph Service Manual Figure 240 7 Removing the PTV manifold assembly 4 Remove the column 5 Loosen the three captive Torx screws which secure the inlet to the oven and lift the PTV inlet out of the oven ...

Page 124: ...rvice Manual Programmed Temperature Vaporization Inlet PTV 240 Replacement procedures Figure 240 8 Removing the PTV inlet 6 Remove the heater connector from the side panel Figure 240 9 PTV electrical connectors Loosen screws Disconnect cable Remove connectors ...

Page 125: ...ics board 8 Slide the flow module out of the chassis remove the chemical trap assembly from the mounting bracket and remove the PTV assembly from the GC 9 Removing the entire PTV assembly 10 Replace the PTV assembly and flow module and re assemble in reverse order Replacing the PTV with cooling assembly The PTV with cooling assembly shown in Figure 240 10 is generally the lowest level replacement ...

Page 126: ...he pneumatics chassis cover 3 Remove the column 4 Loosen the three captive Torx screws which secure the inlet to the oven and lift the PTV inlet out of the oven Caution When removing attaching the inlet cryo line use one wrench to support the cryo line fitting on the inlet body and one to tighten the nut Failure to do this could break the fitting on the inlet Figure 240 11 Removing the gas lines f...

Page 127: ... 8 ReplacethePTV inlet assembly andreassemblein reverse order Toattach the cryo line to the new inlet assembly tighten the nut finger tight then 1 4 turn more using two open end wrenches 9 Check the system for leaks Replacing the CO2 or LN2 inlet cryo assembly 1 Once the PTV with cooling assembly is removed the cryo assembly on the inlet can be replaced 2 Remove the PTV inlet as described under Re...

Page 128: ...itting is closest to the wires as shown in Figure 240 12 5 Reassemble in reverse order 6 Check for leaks Replacing the PTV manifold assembly The PTV manifold assembly is available as a replacement part with or without the connected plumbing When replacing just the manifold the plumbing is removed at the manifold outlet block When replacing the plumbing and manifold the plumbing is disconnected fro...

Page 129: ...actory Caution Follow ESD precautions when performing this procedure 1 Turn off the oven and the inlet and allow them to cool WARNING Turn off the oven and the inlet and allow them to cool Turn off all flows at the initial gas supply Then turn off the main power switch and unplug the power cord 2 Remove the top cover the inlet fan cover the inlet cover the left side panel the top rear panel the pn...

Page 130: ...rature Vaporization Inlet PTV 240 Replacement procedures Figure 240 14 Removing the manifold mounting screw 5 Disconnect the manifold ribbon cable from the pneumatics PCB Disconnect the cryo cable power cable and thermocouple cable connectors from the PTV thermocouple PCB on the manifold ...

Page 131: ... three captive Torx screws which secure the inlet to the oven and lift the PTV inlet out of the oven 2 Disconnect the carrier gas supply line split vent line and septum purge line for the septum head from the inlet Straighten the tubing at the manifold so that the manifold can be easily removed from the chassis PTV SMLS gang weldment Filter and O rings 2 not shown assembly PTV front trap Filter an...

Page 132: ...se of removal 5 Check the system for leaks Replacing the plumbing assemblies 1 Turn off the oven and the inlet and allow them to cool WARNING Turn off the oven and the inlet and allow them to cool Turn off all flows at the initial gas supply Then turn off the main power switch and unplug the power cord 2 Remove the top cover the inlet fan cover the inlet cover the top rear panel and the pneumatics...

Page 133: ...let Unscrew the filter assembly and remove the PTV front trap assembly Figure 240 16 PTV plumbing assemblies septumless head shown 7 Inspect the O rings and filter in the filter trap and replace if necessary 8 If replacing the PTV gang weldment install new O rings in the manifold plumbing block PTV SMLS gang weldment Filter and O rings 2 not shown assembly PTV front trap Filter and O rings 2 not s...

Page 134: ...fan cover the inlet cover and the pneumatics chassis cover 3 Remove the screw in the gang fitting Gently tap the fitting to remove the restrictor for cleaning replacement Inspect the O rings and replace if necessary 4 Reassemble in reverse order Check the plumbing for leaks Replacing the PTV thermocouple PCB Caution Follow ESD precautions when performing this procedure WARNING Turn off the oven an...

Page 135: ... secure the thermocouple conversion board onto the pneumatics board and remove the board Figure 240 17 Replacing the PTV thermocouple PCB 4 Replace the board and reassemble in reverse order 5 Check the system for leaks Replacing the filter 1 Turn off the GC oven and the inlet and allow them to cool 2 Set all GC flows to zero 3 Remove the pneumatics cover Remove 2 screws PTV thermocouple PCB PTV ma...

Page 136: ...r that will accept the column 1 Unscrew the column nut from the adapter Remove the nut and the column from the inlet 2 With a 6 mm wrench remove the inlet adapter being careful not to lose the silver seal inside Save the adapter for later use 3 Select the appropriate inlet adapter for the column to be installed Insert a new silver seal part no 5182 9763 package of five into the adapter and screw t...

Page 137: ... With a glass knife or other fused silica cutter remove approximately 10 mm from the column end to eliminate graphite contamination 3 Position the ferrule so that it is 17 mm from the column end Place a small mark typewriter correction fluid is useful at the back of the ferrule and making sure that the column is correctly positioned insert the column end into the adapter Column ID Graphpack ferrul...

Page 138: ...w the column nut on fingertight Use a wrench to tighten the column nut 1 8 to 1 4 turn Be careful not to overtighten Removing the septumless head 1 Cool the inlet to room temperature 2 Disconnect the carrier gas line 3 Unscrew the septumless head counterclockwise from the inlet 4 Screw the new head onto the inlet Tighten it 1 8 turn past finger tight 2 0 2 2 Mark column here 17 mm 2 ...

Page 139: ...y tighten them again by hand Cleaning the septumless head Minor deposits from sample mixtures can collect in the head Dust and abraded material particles can enter together with the syringe needle eventually causing leaks 1 Disconnect the carrier gas line and unscrew the head from the inlet 2 Unscrew the sealing element from the head Carefully remove the Viton seal and the pressure spring Do not u...

Page 140: ...d to press the valve body with the Kalrez seal slightly out of the head Carefully tap the head on a soft smooth surface so that the valve body falls out completely or slips out far enough to grasp it with your fingers 5 Remove the seal from the valve body 6 Carefully clean all components in hexane 7 Inspect the Teflon ferrule seals and valve body for damage and replace if necessary 8 Assemble the ...

Page 141: ... retighten the guide cap with the syringe needle inserted slightly more and or replace the Kalrez seal If the head leaks when a syringe is inserted the Teflon ferrule is the problem If the head leaks without a syringe inserted the seals may need to be replaced Replacing the Teflon ferrule 1 Unscrew the guide cap from the septumless head and remove the Teflon ferrule Figure 240 21 Installing a Tefl...

Page 142: ...he ferrule meets the septumless head 4 Tighten the guide cap until resistance is first felt 5 Check for leaks when the syringe needle has been fully introduced 6 If necessary carefully tighten the guide cap until the inlet stops leaking Removing replacing the septum head The septum head connects to the inlet via a free spinning retaining nut 1 Turn off the inlet heater and allow it cool 2 If repla...

Page 143: ...nes For best results lift the head to clear the inlet and then push it to either side to allow access 5 To reinstall the septum head gently align the head with the inlet and manually engage the free spinning nut to the inlet The nut should thread easily onto the inlet If resistance is felt unscrew the nut and retry Excessive force can irreparably damage the inlet 6 Tighten the retaining nut 1 2 tu...

Page 144: ...inlet temperatures below 40 C use a regular septum for the inlet seal 1 To replace the septum cool the inlet to ambient temperature 2 Unscrew counterclockwise the septum cap or Merlin cap 3 Remove the septum or Merlin microseal taking care not to scratch the interior of the septum head 4 Install a new septum or Merlin microseal and the correct cap When installing a Merlin microseal note that the s...

Page 145: ...ting toward the end of the liner 5 Place a Graphpack 3D ferrule over the end of the liner with the recessed end towards the compression fitting See Figure 240 24 Slide the ferrule towards the fitting until about 2 mm of liner is exposed beyond the ferrule 6 Slide the compression fitting up to the ferrule Screw the ferrule guide gently onto the compression fitting until it is fingertight 7 Remove t...

Page 146: ...rization Inlet PTV 240 Replacement procedures 8 Insert the liner into the inlet from above until the unpacked side of the ferrule rests on the top of the inlet 9 Replace the sampling head and reconnect the lines if necessary 10 Check all connections for leaks If necessary tighten them again by hand ...

Page 147: ... of continuous cryo operation Note that this is the time to reach the setpoint not the time to stabilize and become ready at the setpoint Shutdown behavior Both Cryo timeout and Cryo fault can cause cryo shutdown If this happens the inlet heater is turned off and the cryo valve closes The GC beeps and displays this message The inlet heater is monitored to avoid overheating If the heater remains on...

Page 148: ... septum or microseal and Graphpack 3D ferrule on the glass liner are unknown replace them now 4 Cap the inlet s column fitting and the septum purge vent septum head only Use solid no hole Vespel type ferrules 1 8 inch part no 0100 1372 and 1 16 inch part no 5181 7458 with a 1 8 inch Swagelok nut part no 5180 4103 and a capillary column nut Note As alternate capping devices a 1 8 inch Swagelok cap ...

Page 149: ...i Carrier source pressure should always be at least 10 psi greater than the desired inlet pressure Performing the leak test Note Be sure to complete all of the preparation steps on page 39 before continuing 1 Set the inlet to Split Mode 2 Configure the column as 0 length Press Config Column 1 or Config Column 2 and enter 0 in the first column of the Dim field 3 Set the inlet s Total Flow to 60 mL ...

Page 150: ...is will provide you with unlimited time to locate leaks 7 Note the Actual reading on the display and monitor the pressure for 10 minutes You can use the stopwatch feature of the 6890 GC to monitor the time Press Time and then Enter to start timing then toggle between the time and the pressure reading with the Time and the Front Inlet Back Inlet keys If there is less than 0 5 psi pressure loss cons...

Page 151: ...k part no G1530 20660 from the leak test kit part no G1530 60960 Make sure you install O rings if needed between the block and the EPC module to create a seal The leak test block is a special fitting that plumbs the carrier gas coming out of the module directly back into the septum purge and split vent flow paths on the module It allows the carrier gas septum purge and split vent line to function ...

Page 152: ...ok nut 2 Check the actual pressure on the display and monitor it for 5 minutes Pressure loss should not be greater than 0 5 psi Locating leaks on the flow manifold If the EPC module appears to have a leak you can remove it to locate the leaky component The leak test kit part no G1530 60960 contains a longer ribbon cable to allow you to lay the EPC module on the benchtop for testing Caution Be sure...

Page 153: ...d turn on the main power switch Set the pressure to 25 psi and the flow to 60 mL min 7 Lay the EPC module on the lab bench and use an electronic leak detector to locate the leaky component on the module Figure 240 26 Leak testing the EPC module on the lab bench 8 If the leaky component is serviceable such as a vent inlet fitting see diagram of serviceable parts Figure 240 27 replace it Otherwise r...

Page 154: ...g that are potential sources of a leak 2 Tighten loose connections to correct leaks if necessary You may need to repeat the leak test 3 If the pressure drop is now 0 5 psi or less you can consider the inlet system leak free If the pressure drops faster than the acceptable rate continue to search for leaks and repeat the pressure test Potential leak points Check the following areas when checking an...

Page 155: ...al On the inlet Septum septum head only Lower inlet seal at bottom of inlet Ferrule on inlet liner Connections for carrier gas septum purge septum head only At EPC module O rings behind the block where the inlet s pneumatic lines enter the module Two O rings for each valve Septum purge cap septum head only Chemical trap O rings O rings in gang fitting ...

Page 156: ...ough the frit block and ismeasuredbya pressure sensor Thisstream also providesa trickle flow to the interface There are three modes of operation available split splitless and direct The pneumatics vary for each operating mode and are discussed in more detail later in this chapter The volatiles interface is not supplied with manual pressure control Split mode When you introduce a sample in the spli...

Page 157: ... while the sample enters the interface and is transferred to the column At a specified time after the sample is introduced the solenoid valve opens Before Pre Run when the GC is preparing for sample introduction total flow to the interface is measured by a flow sensor and controlled by a proportional valve Column flow is controlled via back pressure regulation See Figure 250 1 Sampler Trap Valve o...

Page 158: ...the Pre Run state when your system is automated and the Pre Run light is on or during manual operation when you press Prep Run and ends after the interface s Sampling end setpoint expires During this user specified sampling period the solenoid valve is closed Flow to the interface is measured by a flow sensor and controlled by a proportional valve See Figure 250 2 After sampling end the solenoid v...

Page 159: ...roduction permits a quantitative transfer of analyte without risking contamination to the pneumatic system It provides the sensitivity required for air toxics analyses The interface s minimal dead volume also eliminates the potential interaction of solutes with poorly swept active surfaces In direct mode the split vent is physically disconnected and the GC reconfigured Sampler Trap Valve closed PV...

Page 160: ...w controlled during sampling time The sampling flow rate is calculated from the pressure setpoint that is active when sample introduction begins This flow control starts when the GC goes into the Pre Run state when your system is automated and the Pre Run light is on or during manual operation when you press Prep Run and ends after the interface s Sampling end setpoint expires Flow to the interfac...

Page 161: ...n 6 of 30 Jun 2001 Inlets Agilent 6890 Gas Chromatograph Service Manual Figure 250 3 VI flow control diagram direct mode sample introduction Sampler Trap Valve open PV2 SPR FS PV1 Total flow control loop PS Supply To Column SPR Vent Split Vent ...

Page 162: ...ver Gas saver mode may be used in split or splitless operation mode Gas saver reduces the carrier gas flow from the split vent after the sample is on the column Column head pressure and the column flow rate are maintained while split vent flow decreases Flows remain at the reduced level until the beginning of the next run Sampler Trap Valve open PV2 SPR SPR Vent Split Vent FS Supply To Column PS ...

Page 163: ...001 Inlets Agilent 6890 Gas Chromatograph Service Manual Replacement procedures Replacing or cleaning the interface Figure 250 5 The volatiles interface Top plate Top insulation Clamping plate Volatiles interface Heater block Heater sensor wire Block insulation ...

Page 164: ...tial gas supply Then turn off the main power switch and unplug the power cord 1 Disconnect the transfer line Loosen the nut with a 1 4 inch wrench and remove the line Remove the clamping plate from the interface by loosening the captive screw with a T 20 Torx screwdriver Put the plate in a safe place Figure 250 6 Removing the transfer line 2 Lift the interface out of the heater block Transfer line...

Page 165: ...terface If cleaning the interface sonicate it twice and then rinse 6 Reinstall the split line and pressure sensing lines and finger tighten the hex nuts Tighten the hex nuts an additional 1 4 turn with the wrench 7 Reinstall the column in the interface 8 Place the interface in the heater block Replace the clamping plate and tighten the screw until snug Do not overtighten 9 Reinstall the transfer l...

Page 166: ...stalled at both the interface and the detector establish a flow of carrier gas through the interface and maintain it for 10 to 15 minutes Check for leaks Heat the interface to operating temperatures and retighten the fittings if necessary Replacing the heater sensor assembly WARNING Turn off the oven and the interface and allow them to cool Turn off all flows at the initial gas supply Then turn of...

Page 167: ...lets Agilent 6890 Gas Chromatograph Service Manual Figure 250 9 Removing the transfer line 2 Remove the heater sensor wire connector from the GC connection Figure 250 10 Heater sensor cable routing Front inlet connector Back inlet connector heater sensor cable routing ...

Page 168: ...plate and the top insulation from the GC 5 Remove the heater sensor assembly and replace 6 Reinstall the top insulation and the top plate Align the volatiles interface with the mounting holes 7 Reinstall the three Torx screws Tighten each screw once with the T 20 Torx screwdriver until the interface is properly aligned Tighten each screw again until snug 8 Reinstall the heater sensor wire connecto...

Page 169: ... their sources 2 Unsnap and lift off the pneumatics top cover 3 Remove the RFI cover Remove the screw with a T 20 Torx screwdriver slide the cover to the left until it disengages from the top rear panel and remove it 4 Remove the inlet cover plate from the front or back position by loosening the two screws with a T 20 Torx screwdriver and sliding the plate up and off 5 Loosen the five screws in th...

Page 170: ...ws and loosening the three captive screws at the top of the bracket Caution Board components can be damaged by static electricity use a properly grounded static control wrist strap when installing the flow module The gas lines from the flow module to the Volatiles Interface are assembled at the factory Do not disconnect them 12 From the back of GC locate the pneumatics carrier 13 If you are replac...

Page 171: ...hromatograph Service Manual 14 Remove the screw at the top of the module as shown using a T 20 Torx screw driver Figure 250 13 Removing the EPC inlet mounting screw 15 Unlock the folded ribbon cable and remove from the connector Figure 250 14 The ribbon cable Remove screw Folded ribbon cable ...

Page 172: ...6 Slide the flow module out of the carrier Guide the gas lines through the slot in the front of the carrier Figure 250 15 Replacing the EPC flow module 17 Replace the EPC flow module 18 Reassemble in reverse order Remember to fold the module ribbon cable and reconnect the ribbon cable from the front inlet if applicable ...

Page 173: ...ensor 1 Plug in your GC and turn it on if you haven t already done so 2 Wait 15 minutes This allows your GC to reach thermal equilibrium 3 Zero the interface s pressure sensor a Press Options scroll to Calibration and press Enter b Scroll to Front inlet or Back inlet and press Enter c Scroll to Pressure Zero d Press On to zero the pressure sensor 4 Turn off your GC 5 Plumb the carrier gas to your ...

Page 174: ... the interface and allow them to cool Turn off all flows at the initial gas supply Then turn off the main power switch and unplug the power cord 1 Remove the pneumatics top cover 2 Unscrew the knurled trap nut on the filter assembly 3 Remove and replace the filter inside the housing 4 Reassemble in reverse order Figure 250 16 Filter trap assembly Filter trap assembly ...

Page 175: ...e initial gas supply Then turn off the main power switch and unplug the power cord 1 Remove the detector cover the inlet fan cover and the pneumatics top cover Figure 250 17 Replacing the restrictor in the restrictor block 2 Remove the Torx screws in the restrictor block and remove the restrictor 3 Clean and or replace Inspect the O rings Replace if necessary 4 Leak check the assembly See Leak tes...

Page 176: ... cord 1 Remove the detector cover the inlet fan cover and the pneumatics top cover 2 Disconnect the transfer line Loosen the nut with a 1 4 inch wrench and remove the line 3 Remove the plumbing from the gang fitting to the volatiles interface at the interface 4 Disconnect the plumbing from the gang fitting to the filter trap at the trap 5 Remove the plumbing block from the EPC manifold 6 Replace t...

Page 177: ... then check the volatiles interface Use an electronic leak detector capable of detecting the gas being used Liquid leak detectors are not recommended especially in areas where cleanliness is very important If using leak detection fluid immediately rinse the fluid off to remove the soapy film WARNING To avoid a potential shock hazard when using liquid detection fluid be careful not to spill leak so...

Page 178: ...lumn fitting with the column nut and a no hole ferrule 5 Cap the septum purge and split vent fittings located on the flow module with 1 8 inch Swagelok caps 6 Enter a pressure setpoint between 20 and 25 psi or enter the normal operating pressure if it is greater Make sure that the pressure at the initial gas supply is at least 10 psi higher than the interface pressure Wait a few minutes for the pr...

Page 179: ...eak free If the pressure drops faster than the acceptable rate check the interface and sampler systems separately to determine the source of the leak See Preparing the interface for a leak test to create a closed flow system then return to this section and complete steps 5 to 7 again If you find a leak in the interface refer to Correcting leaks in this section If the interface is leak free pressur...

Page 180: ...em from the sampler WARNING Be careful The oven and interface may be hot enough to cause burns 1 Disconnect the transfer line from the interface 2 Disconnect the carrier line from the sampler 3 Prepare the end of the carrier line using the 1 16 inch male GC nut and a graphite Vespel ferrule 4 Connect the carrier line to the interface where you removed the transfer line and tighten the nut finger t...

Page 181: ...30 20660 from the leak test kit part no G1530 60960 Make sure you install O rings if needed between the block and the EPC module to create a seal The leak test block is a special fitting that plumbs the carrier gas coming out of the module directly back into the septum purge and split vent flow paths on the module It allows the carrier gas septum purge and split vent line to function normally as i...

Page 182: ...k the actual pressure on the display and monitor it for 5 minutes Pressure loss should not be greater than 0 5 psi Locating leaks on the flow manifold If the EPC module appears to have a leak you can remove it to locate the leaky component The leak test kit part no G1530 60960 contains a longer ribbon cable to allow you to lay the EPC module on the benchtop for testing Caution Be sure to wear an E...

Page 183: ... main power switch Set the pressure to 25 psi and the flow to 60 mL min 7 Lay the EPC module on the lab bench and use an electronic leak detector to locate the leaky component on the module Figure 250 18 Leak testing the EPC module on the lab bench 8 If the leaky component is serviceable such as a vent inlet fitting see diagram of serviceable parts Figure 250 19 replace it Otherwise replace the EP...

Page 184: ...any connections which are leaking and re test Note Overtightened Vespel ferrules can sometimes get stuck in the interface If stuck try to remove the ferrule carefully to avoid damaging the sealing surfaces Otherwise replace the interface 3 If the pressure drop is now 0 03 psi min or less you can consider the interface system leak free If the interface still leaks continue to check for and correct ...

Page 185: ...e is damaged or otherwise unable to maintain a good seal Reassemble and test for leaks Potential leak areas Check the following areas when checking for leaks in the volatiles interface system The capped purge vent The capped split vent The plugged column connection The sealing surfaces where the gas lines are plumbed to the interface Three O rings behind the block where the pneumatic lines enter t...

Page 186: ...p The precolumn separates most of the solvent from the analytes and vents it through the open valve At a time specified by the user to optimize the analysis the valve closes the oven temperature program begins andtheretainedsolvent and analytesmove onto the analytical column for separation Figure 260 1 Solvent vapor exit accessory flow diagram Solvent Vent Valve Solvent Waste Port 1 3 2 50 mm Blee...

Page 187: ...hock hazard by unplugging the power cord before removing the side panels Caution Prevent electrostatic voltages from damaging the GC by using precautions such as an ESD wriststrap 1 Turn off the GC and unplug the power cord Allow time for all heated zones to cool and then turn off supply gases at their sources 2 Remove the top cover the pneumatics cover the electronics carrier cover and the right ...

Page 188: ...20 µm transfer line from the stainless union on the 1 16 inch stainless steel tubing Carefully remove the tubing from the oven through the cutout in the top of the oven 5 Disconnect the valve driver cable from the valve jumper cable or valve driver assembly as applicable 6 Remove the mounting screw in the valve fitting assembly and remove the assembly from the GC Heat resistant tape Bleed restrict...

Page 189: ...nd of the new column after installing the new fitting and ferrule 10 Reattach the solvent waste vent line WARNING Because a significant amount of solvent is vented through the SVE valve assembly it is important that the bleed restrictor and the solvent vent are connected to an appropriate laboratory ventilation system 11 Check for leaks Replacing the bleed restrictor column 1 Turn off the GC and u...

Page 190: ... column assembly so that the end of the retention gap 530 µm is located under the COC inlet and the end of the analytical column 250 µm is under the detector 5 Connect the retention gap to the COC inlet using a graphite ferrule and a column nut 6 If using a MSD connect the analytical column HP 5MS to the MSD using a column nut part no 05988 20066 and a graphite Vespel ferrule part no 5062 3508 If ...

Page 191: ... Being careful not to touch the ends of the columns insert them into the quartz splitter as far as possible making sure that the column ends are making contact with the inside walls of the splitter Sufficient pressure should be applied to give a good seal Too much pressure on the other hand can damage the polyimide layer or even the column and result in leakage Test to see that the column has been...

Page 192: ...ing assembly Solenoid valve S S union Inlet fitting on the valve fitting assembly Note that there are no replacement parts on the valve fitting assembly If the valve fails or the fitting cannot be tightened replace the assembly Leak testing the tri column assembly Tools Required The following tools not supplied in the SVE Kit are required to perform the leak check procedure of the tri column assem...

Page 193: ...the supply pressure is not high enough at least 10 psi greater than desired pressure 4 Cap the septum purge vent of the Cool On column flow module using a solid no hole 1 8 inch Vespel ferrule part no 0100 1372 and a 1 8 inch Swagelok nut part no 5180 4103 As an alternative a 1 8 inch Swagelok cap can be used 5 From the GC keyboard turn the inlet pressure OFF 6 Note the Actual reading on the displ...

Page 194: ...g through the GC and column close the SVE solenoid valve 3 Use an electronic leak detector to check for leaks Detection fluid may be used on the valve assembly but be sure to avoid contaminating the oven or electrical connections Clean up any fluid after use 4 If a leak is found at a connection tighten the fitting or replace the seals If there is a leak through the valve replace the valve fitting ...

Page 195: ...260 Solvent Vapor Exit Accessory Leak testing 10 of 10 Jun 2001 Inlets Agilent 6890 Gas Chromatograph Service Manual ...

Page 196: ... the SIMDIS application which uses a proprietary PTV inlet by one of Agilent s channel partners Any valve application where no inlet is required For example the PCM can provide flow or pressure to a column connected to a gas sampling valve Other valving applications may involve providing auxiliary gas flow especially when using packed columns Sample preparation devices such as the Headspace Sample...

Page 197: ...time for all heated zones to cool and then turn off supply gases at their sources 2 Remove the gas supply line to the manifold 3 Remove the injector tray and bracket if present 4 Remove the top cover the pneumatics top cover the RFI cover the inlet fan cover the inlet cover or tray mounting bracket as applicable the left side panel and the top rear panel Caution Board components can be damaged by ...

Page 198: ...nd mounting screw 6 Remove the screw at the top of the module as shown using a T 20 Torx screw driver 7 Remove the gang fitting on the front of the manifold Check the O rings in the plumbing block for damage and replace them if necessary 8 Slide the PCM out of the carrier Remove the ribbon cable Remove the mounting screw Back inlet Front inlet Pneumatics carrier ...

Page 199: ...bon cable from the front inlet if applicable 10 Reinstall the pneumatics block gang fitting onto the flow module 11 Calibrate the interface as described in Calibrating the PCM interface below Replacing the PCM gang weldment 1 Turn off the oven and inlet and allow them to cool WARNING Turn off the oven and the inlet and allow them to cool Turn off all flows at the initial gas supply Then turn off t...

Page 200: ...ce The interface s flow module contains a pressure sensor that must be zeroed after it is installed on the GC Calibration ensures an accurate interface pressure display Do not connect the carrier gas to the flow module until you have zeroed the interface s pressure sensor 1 If the gas supply is connected to the GC turn off the supply at the source then disconnect the supply line from the PCM inlet...

Page 201: ...0 Pneumatics Control Module Replacement procedures 6 of 10 Jun 2001 Inlets Agilent 6890 Gas Chromatograph Service Manual 10 If you were calibrating the flow sensor after replacing the PCM check for leaks ...

Page 202: ... 1 On the keyboard turn off pressure to the inlet being tested Press Front Inlet or Back Inlet scroll to the Pressure field and press Off 2 Use a Torx T 10 screwdriver to remove the screw in the plumbing block on the front of the PCM Remove the plumbing block from the PCM being careful not to lose the O rings between the block and the module 3 Replace the inlet s plumbing block with the leak test ...

Page 203: ...aks that do cause problems by allowing air into the system The valves can leak at about 0 2 mL min and be within specification To check for internal valve leakage when leak testing the PCM only 1 Remove the supply pressure at the carrier inlet fitting and quickly cap the fitting with a solid 1 8 inch Vespel plug and a Swagelok nut 2 Check the actual pressure on the display and monitor it for 5 min...

Page 204: ...t ribbon cable G1530 61370 to the ribbon cable connector on the PCM and connect the other end to the appropriate connector on the pneumatics board Reconnect the gas supply and turn on the main power switch Set the pressure to 25 psi and the flow to 60 mL min 7 Lay the PCM on the lab bench and use an electronic leak detector to locate the leaky component on the module Figure 270 3 Leak testing the ...

Page 205: ...ressure drop is now 0 05 psi min or less you can consider the interface system leak free 3 If the interface still leaks continue to check for and correct leaks Potential leak areas Check the following areas when checking for leaks in the PCM The capped purge vent Three O rings behind the block where the pneumatic lines enter the PCM Two O rings for each valve in the PCM Aluminum bracket Septum pur...

Page 206: ...c and manual detectors on the 6890 gas chromatograph 310 Flame Ionization Detector FID 320 Nitrogen Phosphorus Detector NPD 330 Thermal Conductivity Detector TCD 341 Micro cell Electron Capture Detector µ ECD 350 Flame Photometric Detector FPD 360 Auxiliary EPC ...

Page 207: ......

Page 208: ...ccurs A collector with a polarizing voltage is applied near the flame attracting the ions and producing a current which is proportional to the amount of sample present in the flame Figure 310 1 The Flame Ionization Detector FID EPC detector The EPC FID has three pneumatic supply lines for air hydrogen and makeup gas Each line has a filter frit a proportional valve controlled by a pressure Electrom...

Page 209: ...olled detector The manually controlled FID has three pneumatic supply lines for air hydrogen and makeup gas All three lines have an on off solenoid valve and a non adjustable restrictor frit In addition the makeup gas line has a pressure regulator to change flow without changing supply pressure The makeup gas and hydrogen lines merge before entering the detector Filter frits Proportional valves Re...

Page 210: ...ectors Agilent 6890 Gas Chromatograph Service Manual Flame Ionization Detector FID 310 Theory of operation Figure 310 3 Manual detector flow On off solenoid valves Restrictors Vent Pressure regulator Aip in H2 in Makeup in ...

Page 211: ...vidual parts Replacing the entire detector WARNING Before proceeding turn off the oven and any heated zones and let them cool down Turn off any detector gases at their supply Then turn off the main power switch and unplug the power cord Caution Make sure you are properly grounded with an ESD strap before continuing 1 Shut off the detector and the detector gases and let the detector cool 2 Remove t...

Page 212: ...ck Remove the T 20 screw on the front only if you intend to remove the manifold 5 Unlock thedetectormanifoldribboncablefrom theEPC boardanddetach the connector The adjacent ribbon cable may have to be removed as well Slide the manifold out of the back of the GC You will need to remove the two 1 16 inch tubes from the sheet metal and straighten them 6 Unclip the ignitor cable and the electrometer s...

Page 213: ...t 6890 Gas Chromatograph Service Manual 7 Follow the heater sensor cables back to their connector to the right of the detector interface card and disconnect them Figure 310 5 Location of FID connectors Heater sensor cable connector Electrometer ribbon cable connector Ignitor cable connector ...

Page 214: ...nization Detector FID 310 Replacement procedures 8 Loosen the four captive Torx T 20 screws from the top of the detector pallet and remove the detector from the instrument Figure 310 6 Removing the detector Four captive screws Ignitor cable Electrometer ribbon cable Detector pallet ...

Page 215: ... down Turn off any detector gases at their supply Then turn off the main power switch and unplug the power cord 1 Remove the entire detector as described in this section 2 Remove the collector assembly and the detector s electrometer as described in the Removing the electrometer procedure in this section 3 Remove the 1 1 4 inch brass hex nut from the detector Figure 310 7 Replacing the detector we...

Page 216: ...he detector block Replacing the collector assembly WARNING Before proceeding turn off the oven and any heated zones and let them cool down Turn off any detector gases at their supply Then turn off the main power switch and unplug the power cord 1 Remove the right side cover of the instrument Caution Make sure you are properly grounded with an ESD strap before continuing Detector pallet Hex nut The...

Page 217: ...diagram 3 Unscrew the knurled collector nut from the collector block 4 Lift the collector nut ignitor castle and ignitor cable assembly off of the collector body 5 Lift the collector from the collector housing The upper insulator will be on top of it 6 If desired remove the lower collector insulator with tweezers 7 Reassembly is reverse of removal Collector nut ignitor castle ignitor assembly Uppe...

Page 218: ...age Washing them with a high quality grade methyl alcohol and drying them under moderate heat 100 C prior to reinstallation is recommended Replacing the FID jet WARNING Before proceeding turn off the oven and any heated zones and let them cool down Turn off any detector gases at their supply then turn off the main power switch and unplug the power cord 1 From inside the oven remove the column and ...

Page 219: ...e jet 6 Install the replacement jet finger tight Use two fingers on the nut driver to obtain this tightness Then tighten the jet 1 8 turn past finger tight using the nut driver 7 Reinstall the collector block so that it seats flush on the detector base If the block does not seat flush the electrometer spring is not seated properly and will cause a short circuit if it is not corrected 8 Reinstall t...

Page 220: ... the instrument Caution Make sure you are properly grounded with an ESD strap before continuing 2 Disconnect the electrometer s ribbon cable from the detector s interface board 3 Remove the collector block three Torx T 20 screws 4 Remove the two Torx T 20 screws and the corresponding clamps on the electrical interconnect 5 Remove the Torx T 20 screw from each end of the electrometer and remove the...

Page 221: ...wer switch and unplug the power cord 1 Remove the Torx T 20 screw that holds the manifold in its slot from the front of the manifold 2 Remove the gas supply fittings from the side Type 1 or the rear Type 2 of the manifold 3 Disengage the detector tubing from the slots in the chassis so that the gang fitting on the manifold can be removed easily 4 RemovetheTorxT 20 screw holding the pneumatics bloc...

Page 222: ...ion Make sure you are properly grounded with an ESD strap before continuing 5 Unlock the detector manifold s ribbon cable from the EPC board and detach the connector The adjacent ribbon cable may have to be removed as well Caution Always hold the manifold by its support bracket to avoid damaging board components 6 Slide the manifold from its slot Screw Type 1 manifold Type 2 manifold ...

Page 223: ...or gases at their supply then turn off the main power switch and unplug the power cord Caution Always hold the manifold as shown below to avoid damaging board components 1 While holding the manifold by the black plastic frame as shown below slip the label through the slot in the mounting bracket and align the bracket holes over the gas fittings 2 Finger tighten three 7 16 inch hex nuts over the fi...

Page 224: ...nd away from the block as shown in Figure 310 15 4 Insert the gang fitting through the cutout in the manifold bracket and install it onto the new manifold assembly so that the tubing runs back and away from the fitting Be sure the left tube clears the inner edge of the bracket See Figure 310 13 and Figure 310 15 Finger tighten nuts Do not use a wrench FPD shown above 7 16 inch hex nuts Mounting br...

Page 225: ...ure 310 14 Then slide the manifold and bracket assembly into the slot until the bracket seats flush against the end of the rails See Figure 310 15 Figure 310 14 Routing the ribbon cable Figure 310 15 Manifold after installation Back view of manifold Manifold installed with cable routed to left Attach gang fitting Bracket is flush with Route tubing along carrier rails Check for interference this pa...

Page 226: ...ifold and slide it out of the carriera few centimetersto connect thecableto the pneumatics board Then reinstall the manifold 9 Using a pair of needle nosedpliers removetheappropriatetoprearpanel detector cutout for the FID Also remove any cutouts needed to access other manifolds or accessories installed in the GC See Figure 310 16 Figure 310 16 Top rear panel cutouts 10 Place the new top rear pane...

Page 227: ...oard on the main board as shown on the following page WARNING Before proceeding turn off the oven and any heated zones and let them cool down Turn off any detector gases at their supply then turn off the main power switch and unplug the power cord Caution Make sure you are properly grounded with an ESD strap before continuing 1 Unlock and unclip the ribbon cable from the interface board 2 Unclip t...

Page 228: ...gilent 6890 Gas Chromatograph Service Manual Flame Ionization Detector FID 310 Replacement procedures Figure 310 18 Detector interface board and connections Detector card captive screw Ribbon cable Ignitor cable FID detector board ...

Page 229: ...nition problems If your FID detector is not igniting properly check the following The gases are plumbed correctly The system is leak free The flow rates are set correctly External lines have been well purged The detector is contaminant free The ignitor is operational The jet is not damaged check for scores galls a crimped tube or plugged ...

Page 230: ...as described in this chapter 2 Use a cleaning brush part no 8710 1346 to scrub the interior of the collector 3 Use compressed air or nitrogen to blow out loose material from inside the collector 4 Wash the collector in distilled water hexane and or methanol Dry in an oven at 70 C for at least 1 2 hour Cleaning the jet Turn off the detector and its heated zone also turn off gases to the detector pa...

Page 231: ...310 Flame Ionization Detector FID Cleaning an FID jet and collector 24 of 24 Jun 2001 Detectors Agilent 6890 Gas Chromatograph Service Manual ...

Page 232: ...of nitrogen or phosphorous compounds This causes the NPD to be both sensitive and selective for organic compounds containing nitrogen and or phosphorous This thermionic source efficiently ionizes nitrogen and phosphorous containing organic molecules Ions are collected and the resulting current measured for the chromatogram Figure 320 1 The Nitrogen Phosphorus Detector NPD EPC detector The EPC NPD ...

Page 233: ...graph Service Manual sensor and a non adjustable restrictor frit The makeup gas and hydrogen lines merge before entering the detector Figure 320 2 EPC detector flow Filter frits Proportional valves Pressure sensors Restrictors Vent Electrically heated bead PS PS PS Air in H2 in Makeup in Pressure control loops ...

Page 234: ...or air hydrogen and makeup gas All three lines have an on off solenoid valve and anon adjustable restrictor frit In addition themakeup gaslinehasapressure regulator to change flow without changing supply pressure The makeup gas and hydrogen lines merge before entering the detector Figure 320 3 Manual detector flow On off solenoid valves Restrictors Vent Air in H2 in Makeup in Pressure regulator El...

Page 235: ...uring the solvent peak and turn it back on after the solvent elutes With this technique the baseline recovers to its original value in less than 30 seconds This also extends the life of the bead The hydrogen can be turned on and off automatically as part of a Run Table Turning hydrogen off between runs To extend bead life turn off the hydrogen flow between runs Leave all other flows and the detect...

Page 236: ...another 30 minutes Temperature programming The NPD is flow sensitive If you are using temperature programming in which the column flow resistance changes with temperature set up the instrument as follows With an EPC inlet set the carrier gas in the Constant flow mode Set EPC detector makeup gas to Const makeup NonEPC detectors provide constant makeup gas flow If you have an EPC inlet and an EPC de...

Page 237: ...apter Table 320 2 Jets and Collectors for the Adaptable NPD The extended jets used with the small id collectors reduce the exposure of the sample to heated metal and reduce tailing of some very polar components Type Part no id Use with Standard jet G1531 80560 0 29 mm Either collector Extended jet optional G1534 80580 Either collector Standard collector G1534 20530 7 mm Small id collector optional...

Page 238: ... the bead voltage to zero to establish a reference level then look for a sudden sharp increase in output as the bead voltage increases which indicates that plasma ignition occurred If 4 V are being supplied to the bead but it is not igniting the bead is probably burned out Replace the bead The bead power cable is bad A contaminated upper ceramic insulator will cause a high offset 2 to 15 pA or mor...

Page 239: ... flame is burning at the top of the jet If the hydrogen flow is too high the flame at the tip of the jet will continue burning Turn off the hydrogen flow completely and decrease the flow rate The hydrogen flow should never be higher than 4 0 mL min Large solvent signal with very small NPD signal Check the hydrogen flow rate If it is too high a flame could be burning at the tip of the jet Turn off ...

Page 240: ...ture above 300 C for 60 minutes to eliminate excess baseline drift during oven programs Verify that the detector insulation is not cracked or damaged High detector baseline of GC at room temperature Moisture in the detector can cause the baseline to be at 10s or even 100s of pA when the detector is at a low such as room temperature Set the detector temperature to 150 C with the detector gases on T...

Page 241: ...ector WARNING Before proceeding turn off the oven and any heated zones and let them cool down Turn off any detector gases at their supply Then turn off the main power switch and unplug the power cord Remove the side mainframe side panel by loosening the two T 20 captive screws 1 Shut off the detector and the detector gases and let the detector cool 2 Remove the right side mainframe panel by loosen...

Page 242: ...o remove the manifold slide it to the rear enough to remove the screw holding the pneumatics block then return it to position and insert the screw in the front to secure it 5 Type 2 manifold The pneumatics block is on the rear rather than the side of themanifold If you do not intend to remove the manifold remove the screw holding the pneumatics block Remove the T 20 screw on the front only if you ...

Page 243: ...cation of the detector pallet screws and the NPD interface board connectors 7 Follow the heater sensor cables back to their connector to the right of the detector interface card and disconnect them 8 Loosen the four captive Torx T 20 screws from the top of the detector pallet and remove the detector from the instrument 9 Reassembly is the reverse of removal When reinstalling the detector pallet ma...

Page 244: ...ling the internal detector components The detector bead is fragile avoid touching the bead or letting it touch other surfaces While performing this procedure do the following Leave all detector gasses except hydrogen turned on to purge contamination Turn hydrogen off Make sure the detector has cooled to 150 C before beginning or the bead may be damaged by exposure to air Two ceramic beads are avai...

Page 245: ...nt 6890 Gas Chromatograph Service Manual 2 Detach the bead drive cable by twisting the metal connector and pulling it out Figure 320 6 NPD detector cable and tower cover 3 Lift up the hinged metal cover Plumbing to manifold To detector card Detector tower cover Metal connector Bead drive cable ...

Page 246: ...or Caution Theactiveelementisfragile Do nothandleitorallow it to strike hard surfaces Handle the active element assembly only by the cable or the hex nut 6 Reassembly is the reverse of removal with the following provisions When you tighten the three screws on the source assembly nut tighten one screw about finger tight and then tighten the remaining two screws firmly This will sufficiently tighten...

Page 247: ...rings periodically and the alumina insulators upon contamination WARNING Before proceeding turn off the oven and any heated zones and let them cool down Turn off any detector gases at their supply then turn off the main power switch and unplug the power cord Caution To avoid detector contamination use clean lint free gloves when handling the internal detector components The detector bead is fragil...

Page 248: ...ers to lift out the metal C ring size 14 the alumina insulator and another metal C ring size 14 6 Reassembly is the reverse of removal Note that when replacing the lid weldment make sure the view tube on top of the weldment faces the electrometer Captive T 20 screws 3 Lid weldment Top C ring Alumina insulator Collector assembly C ring lower Alumina insulator C ring upper Standoff View tube ...

Page 249: ...nd any heated zones and let them cool down Turn off any detector gases at their supply Then turn off the main power switch and unplug the power cord Caution To avoid detector contamination use clean lint free gloves when handling the internal detector components The detector bead is fragile avoid touching the bead or letting it touch other surfaces 1 Remove the collector as described in theRemovin...

Page 250: ... them cool down Turn off any detector gases at their supply then turn off the main power switch and unplug the power cord Caution Make sure you are properly grounded with an ESD strap before continuing 1 Remove both the electronics top cover and the right side cover 2 Lift up the hinged detector tower cover and remove the Torx T 20 screw and the clamp on the electrical interconnect Exert slight si...

Page 251: ...w on the top of the electrometer that holds the cover on 5 Unlock and detach the electrometer s ribbon cable from the detector s interface board and lift the electrometer from the detector pallet 6 Reassembly is the reverse of removal Removing an EPC flow manifold WARNING Before proceeding turn off the detector and any detector gases at their supply Then turn off the main power switch and unplug t...

Page 252: ...gas supply fittings from the side Type 1 or rear Type 2 of the manifold 4 Disengage the detector tubing from the slots in the chassis so that the gang fitting on the manifold can be removed easily 5 Remove theTorx T 20screw holdingthepneumaticsblock to the manifold and remove the block On Type 1 manifolds slide the manifold slightly to the rear to reach the screw Caution Make sure you are properly...

Page 253: ...its support bracket to avoid damaging board components 7 Slide the manifold from its slot Installing a Type 2 manifold WARNING Hydrogen gas is flammable and potentially explosive Before replacing the manifold turn off the hydrogen gas at the source WARNING Before proceeding turn off the oven and any heated zones and let them cool down Turn off all detector gases at their supply then turn off the m...

Page 254: ...lastic frame as shown below slip the label through the slot in the mounting bracket and align the bracket holes over the gas fittings 2 Finger tighten three 7 16 inch hex nuts over the fittings to hold the bracket in place It is very important that you do not tighten the nuts yet Hold manifold by the black plastic frame Slip label tag through the slot in the bracket FPD shown ...

Page 255: ...nual Figure 320 12 Bracket mounted onto the manifold 3 Peel the blank label from its backing and paste it on the mounting bracket over the screw heads See Figure 320 12 Finger tighten nuts Do not use a wrench FPD shown above 7 16 inch hex nuts Mounting bracket ID tag through Ribbon cable slot in bracket Gang fitting installs here ...

Page 256: ...anifold assembly so that the tubing runs back and away from the fitting Be sure the left tube clears the inner edge of the bracket See Figure 320 14 Be sure that the O rings are in place Tighten the gang fitting screw firmly to compress the O rings 6 Route the ribbon cable behind the manifold assembly as shown in Figure 320 13 Then slide the manifold and bracket assembly into the slot until the br...

Page 257: ... the valves and keep it from being pinched against the manifold For the back detector you may want to loosen the manifold and slide it out of thecarrier a few centimeters toconnect thecable tothepneumatics board Then reinstall the manifold 9 Secure the manifold in place using the Torx T 20 screw 10 Using apairof needle nosedpliers removethe appropriatetoprear panel detector cutout for the NPD Also...

Page 258: ...right and use the screw as a hinge slide each manifold ID tag through its cutout in the panel When all the tags are through the panel finish installing the panel on the GC 12 Install the RFI shield the pneumatics cover and the detector top cover 13 Connect the source gas lines to the manifold See Figure 320 16 Figure 320 16 Gas line connections Insert tip of pliers here Front detector Back detecto...

Page 259: ...interface board on the main board WARNING Before proceeding turn off the detector and any detector gases at their supply Then turn off the main power switch and unplug the power cord Caution Make sure you are properly grounded with an ESD strap before continuing 1 Remove the right side cover and the top electronics cover 2 Unlock and unclip the electrometer ribbon cable from the NPD interface boar...

Page 260: ...hromatograph Service Manual Nitrogen Phosphorus Detector NPD 320 Replacement procedures Figure 320 17 Location of NPD interface board connectors 4 Pull the NPD board directly out from the instrument Ribbon cable connector Bead drive cable connector ...

Page 261: ...Cleaning the collector Turn off the detector and its heated zone also turn off gases to the detector particularly hydrogen Allow time for the detector zone to cool 1 Remove the collector as described in this chapter 2 Use compressed air or nitrogen to blow out loose material from inside the collector Do this carefully so as not to disturb the active element 3 Wash the collector in hexane or isooct...

Page 262: ... as described in the NPD detector chapter 2 Use a cleaning wire 0 016 inch od 12 inch length part no 18765 20070 to loosen remove internal deposits 3 Wash both the internal bore and exterior of the jet with a 1 1 V V solution of methanol and acetone The jet may also be cleaned in an ultrasonic bath in the same solution Dry the jet with compressed clean air or nitrogen and heat in an oven at 70 C f...

Page 263: ...320 Nitrogen Phosphorus Detector NPD Cleaning the NPD jet and collector 32 of 32 Jun 2001 Detectors Agilent 6890 Gas Chromatograph Service Manual ...

Page 264: ...empty channel a pure stream of reference gas maintains an equilibrium through the filament path The reference gas is used to compare thermal conductivity changes caused by the column effluent A gas with high thermal conductivity such as helium is used as the carrier make up reference gas When the analyte is present in the gas stream the thermal conductivity drops and less heat is lost to the cavit...

Page 265: ...matograph Service Manual Figure 330 2 TCD flow path switching Vent Reference switching Makeup valve Column effluent diverted to bypass channel Filament surrounded by reference gas Column effluent diverted to filament channel If sample is present thermal conductivity rises or falls depending on gas type flow ...

Page 266: ...mperature is set at one of two setpoints 310 C or 440 C depending on the whether the detector block setpoint is above or below 200 C In TCDs with a PRT the PRT sends block temperature data directly to the detector interface card which then automatically adjusts the filament voltage Filament temperature is maintained at a relatively constant difference above detector operating temperature See Figur...

Page 267: ...ult 216 217 error Front Back TCD filament open if the PRT is shorted out With a shorted PRT the block temperature will appear to be very low and so the filament temperature will be increased until the main board senses excessive filament resistance and shuts the detector down or the filament fails The main board will deliver a Fault 218 219 F B TCD filament shorted if the PRT fails open The detect...

Page 268: ...line oscillates between two flowpaths one for each channel of the TCD cell The makeup gas line sweeps past the end of the column and carries the column effluent into the TCD cell Figure 330 4 EPC TCD flow diagram Manually controlled detector The manually controlled TCD has a pneumatic supply line for the switching gas also called modulating or reference gas flow and one for the makeup gas Both of ...

Page 269: ...D cell several times a second The switching valve oscillates between two flowpaths one for each channel of the TCD cell The makeup gas line sweeps past the end of the column and carries the column effluent into the TCD cell Figure 330 5 Manual TCD flow diagram Vent Pressure regulators On off solenoid valves Restrictors Reference switching valve Reference gas Makeup gas Makeup flow ...

Page 270: ...nes and let them cool down Turn off any detector gases at their supply then turn off the main power switch and unplug the power cord Caution Make sure you are properly grounded with an ESD strap before continuing 1 Shut off the detector and the detector gases and let the detector cool 2 Remove the detector cover the electronics cover the right side cover the RFI shield and the rear top panel 3 Dis...

Page 271: ...rear so that you can remove the screw holding the front pneumatic block then return it to position and insert the screw to secure it 5 Type 2 manifold The pneumatics block is on the rear face of the manifold If you do not intend to remove the manifold remove the screw holding the pneumatics block Remove the T 20 screw on the front only if you intend to remove the manifold a Remove the Torx T 20 sc...

Page 272: ...d to remove the two 1 16 inch tubes from the sheet metal and straighten them 9 Disconnect the TCD filament leads which run from the detector to the detector interface card Disconnect the wires from the detector interface card using a small flat blade screwdriver to push down on the connector tabs while you pull out the wires Figure 330 7 Disconnecting the TCD filament and PRT leads 10 If your TCD ...

Page 273: ...tector carrier bracket to the instrument Note that two of the screws secure the cover to the bracket Lift the detector from the instrument Figure 330 8 Removing the screws from the carrier bracket Replacing the detector cell WARNING Before proceeding turn off the oven and any heated zones and let them cool down Turn off any detector gases at their supply Then turn off the main power switch and unp...

Page 274: ...d the insulation 3 Use a T 20 Torx screwdriver to remove the two screws securing the detector cell to the aluminum detector carrier bracket and lift the cell from the bracket Figure 330 9 Removing the detector cell from the carrier bracket 4 Slide the heater sensor assembly from the detector cell 5 If your TCD uses a PRT slide it out of the detector cell Detector cover Insulation Heater sensor ass...

Page 275: ...top of the cover is positioned over the detector vent and that the filaments plumbing and heater sensor leads including the PRT leads if used on the TCD are positioned under the appropriate cut outs on the sides of the cover Make sure that only the filament wire is inserted into the connector not the insulation sleeve Then check the filaments by tugging slightly on them If your TCD uses a PRT chec...

Page 276: ...ctor EPC flow manifold contains one inlet fitting for reference and makeup gases There are three tubeson the pneumaticsblock fitting going to the TCD One is the makeup gas and two are the reference gas WARNING Before proceeding turn off the detector and any detector gases at their supply Then turn off the main power switch and unplug the power cord Caution Make sure you are properly grounded with ...

Page 277: ...g on the manifold can be removed easily 4 At the front of the manifold remove the Torx T 20 screw that holds the manifold in its slot Figure 330 11 Removing an EPC flow manifold 5 Remove the screw holding the pneumatics block to the manifold On Type 1 manifolds slide the manifold to the rear to reach the screw 6 Unlock the detector manifold s ribbon cable from the EPC board and detach the connecto...

Page 278: ...pe 2 manifold and thread it back up through the mainframe to the pneumatics carrier Figure 330 12 Removing the detector interface card Caution Always hold the Type 2 manifold by its support bracket to avoid damaging board components 8 Slide the manifold from its slot Installing a Type 2 manifold WARNING Hydrogen gas is flammable and potentially explosive Before replacing the manifold turn off the ...

Page 279: ...e power cord Caution Always hold the manifold as shown below to avoid damaging board components 1 While holding the manifold by the black plastic frame as shown below slip the label through the slot in the mounting bracket and align the bracket holes over the gas fittings 2 Finger tighten three 7 16 inch hex nuts over the fittings to hold the bracket in place It is very important that you do not t...

Page 280: ...ket over the screw heads 4 If the original tubing from the gang fitting is not long enough to reach the new manifold install the TCD adapter weldment between the gang fitting and the manifold and shape the tubing so that it bends up and back from the block as shown in Figure 330 14 Finger tighten nuts Do not use a wrench FPD shown above 7 16 inch hex nuts 3 places Mounting bracket Gang fitting Lab...

Page 281: ...ting screw firmly to compress the O rings Figure 330 14 Installing the TCD adapter weldment 5 If replacing a Type 1 manifold feed the 3 way switching valve cable through the chassis to the detector interface board Connect it to the top edge of the board The connector only goes on one way If replacing a Type 2 manifold connect the switching valve wires to the existing cable 6 Route the ribbon cable...

Page 282: ...30 16 Manifold after installation 7 Secure the manifold in place using the Torx T 20 screw 8 Route the gas tubing behind the manifold over the top of the chassis and through the slots as shown in Figure 330 16 Back view of manifold Manifold installed with cable routed to left Attach gang fitting Bracket is flush with Route tubing along carrier rails Check for interference this path ...

Page 283: ...ers removethe appropriatetoprear panel detector cutout for the TCD Also remove any cutouts needed to access other manifolds or accessories installed in the GC See Figure 330 17 Figure 330 17 Top rear panel cutouts 11 Place the new top rear panel on its left most mounting screw Use the screw as a hinge and angle the panel while sliding each manifold ID tag through its cutout in the panel working fr...

Page 284: ...rly grounded with an ESD strap before continuing 1 Unplug the switching valve lead from the P1 connector on the interface card 2 Disconnect theTCD filament lead wires TheTCD filament leads run from the detector to the detector interface card Disconnect the filament leads from the detector interface card by using a small flat blade screwdriver to push down on the connector tabs while you pull out t...

Page 285: ...nstalled If the PRT leads are not properly installed in the detector card filament burnout can occur Check the leads by tugging slightly on each one 5 Reassembly is the reverse of removal When reinstalling the card align the top edge of the interface card with the notch of the TCD metal pallet Figure 330 19 Removing the detector interface card Filament connectors Switching valve connector Filament...

Page 286: ...ng that the carrier supply gas and flow system components are leak and contaminant free you can clean the detector by bakeout 1 Turn off the detector 2 Remove the column from the detector then cap the detector column fitting 3 Establish a normal reference gas flow rate 20 to 30 mL min through the detector set oven temperature to 250 C 4 Heat thedetectorto400 C Allow thermal cleaningtocontinuefor s...

Page 287: ...330 Thermal Conductivity Detector TCD Cleaning the Thermal Conductivity Detector 24 of 24 Jun 2001 Detectors Agilent 6890 Gas Chromatograph Service Manual ...

Page 288: ...ow energy thermal electrons the carrier gas is ionized by beta particles from a radioactive source in the cell This electron flow produces a current which is collected and measured When the sample molecule is introduced into the cell electrons which would otherwise be captured at the electrode are captured by the sample resulting in decreased current This change is what is recorded and measured fo...

Page 289: ... the column and carries the column effluent into the ECD cell The anode purge flow sweeps the upper part of the ECD and cleans sample deposition from the detector Figure 340 2 EPC ECD flow diagram Manually controlled detector The manually controlled ECD has a pneumatic supply line for the anode purge gas and for the makeup gas Both lines have an on off solenoid valve and a nonadjustable restrictor...

Page 290: ... makeup gas and anode purge flows The makeup gas line sweeps past the end of the column and carries the column effluent into the ECD cell Figure 340 3 Manual ECD flow diagram Pressure regulator On off solenoid valve Restrictors Vent Capillary adapter Restrictors On off solenoid valve Anode purge and makeup gas in 63Ni plating ...

Page 291: ...itch and unplug the power cord WARNING The ECD cell contains radioactive 63 Ni To reduce the risk of exposure wear disposable gloves while handling the ECD cell When you are finished dispose of the gloves and wash your hands with soap and water 1 Remove the detector cover the electronics carrier cover and the right side cover Caution Make sure you are properly grounded with an ESD strap before con...

Page 292: ...connecting the ECD cables 4 Inside the oven remove the insulation cup and disconnect the column from the makeup gas adapter 5 Use a 9 16 inch wrench to loosen the 1 4 inch Swagelok nut on the makeup gas adapter from the bottom of the detector Slide the makeup gas adapter out of the bottom of the detector Heater sensor cable Ribbon cable connector ...

Page 293: ...340 Electron Capture Detector ECD Replacement procedures 6 of 24 Jun 2001 Detectors Agilent 6890 Gas Chromatograph Service Manual Figure 340 5 Disconnecting the makeup gas adapter Unscrew Swagelok nut ...

Page 294: ...he top ECD detector cover to the detector pallet and remove the cover 9 Disconnect the anode signal wire from the detector Figure 340 6 Removing the cover anode purge fitting vent tube and anode signal wire 10 Fully loosen the four Torx T 20 screws on the detector pallet and lift the pallet and detector from the GC 11 Thread the heater sensor leads out of the detector pallet and remove the detecto...

Page 295: ...ble it to replace the heater sensor assembly WARNING The ECD cell contains radioactive 63 Ni To reduce the risk of exposure wear disposable gloves while handling the ECD cell When you are finished dispose of the gloves and wash your hands with soap and water 1 Remove the detector as described in the Replacing the entire detector detector cell procedure in this section 2 Loosen the locking tab scre...

Page 296: ...lent 6890 Gas Chromatograph Service Manual Electron Capture Detector ECD 340 Replacement procedures Figure 340 8 Removing the heater sensor 4 Slide the heater and sensor out of the heated blocks Heater sensor assembly Heated blocks ...

Page 297: ...nt into the ECD cell 1 Remove the detector as described in the Replacing the entire detector detector cell procedure in this section 2 Remove the Torx T 20 screw holding the pneumatics block s to the detector manifold Note There are two pneumatics blocks on the EPC version of the ECD pneumatics manifold The outside block is the anode purge gas line and the inside block is the makeup gas line 3 Sli...

Page 298: ... the EPC flow manifold The ECD detector uses a Type 1 EPC flow manifold that contains one inlet supply fitting for a purge makeup gas WARNING Before proceeding turn off the oven and any heated zones and let them cool down Turn off any detector gases at their supply then turn off the main power switch and unplug the power cord 1 Remove the top plastic covers from the detector and pneumatics areas A...

Page 299: ... properly grounded with an ESD strap before continuing 4 Unlock the detector manifold s ribbon cable from the EPC board and detach the connector The adjacent ribbon cable may have to be removed as well 5 Remove the Torx T 20 screw holding the output pneumatics block s to the manifold and remove the block 6 Slide the manifold from its slot Note There are two pneumatics blocks on the EPC version of ...

Page 300: ...13 of 24 Jun 2001 Detectors Agilent 6890 Gas Chromatograph Service Manual Electron Capture Detector ECD 340 Replacement procedures Figure 340 10 Removing the detector flow manifold ...

Page 301: ...moving the signal board 1 Remove both the electronics top cover and the right side cover 2 Remove the Torx T 20 screw securing the top cover and remove the cover 3 Disconnect the signal wire from the signal board interconnect Figure 340 11 Removing the top cover and anode signal wire Remove detector top cover Remove anode signal wire ...

Page 302: ... electrical interconnect 5 Remove one Torx T 20 screw from each end of the signal board Do not remove the screw on the top of the cover Figure 340 12 Removing the ECD signal board 6 Unlock and detach the ECD signal board s ribbon cable from the detector s interface board and lift the signal board from the detector pallet 7 Reassembly is the reverse of removal Clamp ...

Page 303: ...card The ECD detector interface board plugs into the main board as shown below 1 Unlock and unclip the ribbon cable from the interface board 2 Remove the screw at the top of the card where it mounts to the main board and pull the card out Figure 340 13 Detector interface board installed in back detector position Detector card screw Ribbon cable ECD detector board ...

Page 304: ...urate results run the detector at normal operating conditions for as long as possible at least 2 hours and up to 24 hours before running the frequency test If you will be injecting into an unused inlet you must use low bleed septa Make sure to condition new septa before use in an inlet for several hours with 1 to 5 mL min carrier flow 1 Make sure you are using normal operating conditions and that ...

Page 305: ...tems Anode current leakage make sure the anode contacts are clean Make sure the anode nut is tight Leak test Note Once you have determined that the flow system components upstream from the detector gas supply tubing inlet column fittings are leak free perform the following ECD detector leak test 1 With the GC on and operating normally set the oven detector and inlet temperatures to ambient 2 Turn ...

Page 306: ...ure drops more than 0 5 psi you have a leak If you are sure none of the upstream flow system components are leaking check for leaks at the column fitting and plugged inlet If you find leaks tighten the fittings and repeat the leak test Note If you can find no other leaks the ECD itself is probably leaking The ECD cannot be disassembled without special license from the Nuclear Regulatory Commission...

Page 307: ...per supply tubing part no 5180 4196 Many times clean tubing from other sources has caused high ECD background At the same time install new traps in both the carrier and makeup supplies Place the moisture trap part no 5060 9084 closest to the tank and the indicating oxygen trap part no 3150 0528 closest to the GC Leak test the entire plumbing setup very carefully Isolate problem to carrier or makeu...

Page 308: ...um so that the other end extends 1 mm past the tip of the adapter Use a Vespel column ferrule rather than graphite Tighten the tip just past finger tight with clean pliers Clean the whole assembly with methanol before installing 3 Install the capped off makeup adapter using a new 1 4 inch Vespel ferrule Be sure it is fully seated check the measurement Retighten after the detector has been heated 4...

Page 309: ...40 for the µ ECD Use the column installation instructions for the µ ECD in Volume 1 of the Operating Manual 2 Wipe off the entire makeup adapter with methanol Install it fully check the measurement to be sure 3 Bake out the entire system for another hour at these conditions Detector 350 C Inlet Split mode 275 C Column An appropriate temperature 4 Reload the user s method and make a series of blank...

Page 310: ...ng possible hazardousexposure to β and x radiation bremsstrahlung WARNING To prevent possible hazardous contamination of the area with radioactive material the detector exhaust vent must always be connected to a fume hood or otherwise vented in compliance with the latest revision of Title 10 CFR Part 20 or with state regulations with which the Nuclear Regulatory Commission has entered into an agre...

Page 311: ...adioactivity leak test wipe test ECDs must be tested for radioactiveleakage at least every sixmonths Records of tests and results must be maintained for possible inspection by the Nuclear Regulatory Commission and or responsible state agency More frequent tests may be conducted when necessary The procedure used is the wipe test A Wipe Test Kit part no 18713 60050 is supplied with each new ECD Refe...

Page 312: ...der to produce capturable low energy thermal electrons the carrier gas is ionized by beta particles from a radioactive source in the cell This electron flow produces a current which is collected and measured When the sample molecule is introduced into the cell electrons which would otherwise be captured at the electrode are captured by the sample resulting in decreased current This change is recor...

Page 313: ...ve controlled by a pressuresensor Theline splits into two paths each containing a non adjustable restrictor frit The makeup gas line sweeps past the end of the column and carries the column effluent into the ECD micro cell The anode purge flow sweeps the upper part of the µ ECD and cleans sample deposition from the detector Figure 341 2 EPC µ ECD flow diagram Capillary adapter Column Makeup gas re...

Page 314: ...h and unplug the power cord WARNING The ECD micro cell contains radioactive 63 Ni To reduce the risk of exposure wear disposable gloves while handling the ECD micro cell When you are finished dispose of the gloves and wash your hands with soap and water 1 Remove the detector cover the electronics carrier cover and the right side cover Caution Make sure you are properly grounded with an ESD strap b...

Page 315: ...3 Disconnecting the µ ECD cables 4 Inside the oven remove the insulation cup and disconnect the column from the makeup gas adapter 5 Use a 9 16 inch wrench to loosen the 1 4 inch Swagelok nut on the makeup gas adapter from the bottom of the detector Slide the makeup gas adapter out of the bottom of the detector Heater sensor cable Ribbon cable connector ...

Page 316: ... the make up gas adapter 6 Disconnect the µ ECD vent tube at the rubber sleeve 7 Remove the Torx screw holding the gang fitting onto the detector manifold and remove the gang fitting 8 Remove the one Torx T 20 screw securing the top µ ECD detector cover to the detector pallet and remove the cover 9 Disconnect the anode signal wire from the detector Unscrew Swagelok nut ...

Page 317: ...rom the GC 11 Thread the heater sensor leads out of the detector pallet and remove the detector from the pallet The µ ECD detector is now properly disassembled for replacement or exchange DO NOT remove the inner thermal cover if you are replacing the entire detector assembly Replacing the heater sensor assembly After removing the µ ECD detector from the GC you can further disassemble it to replace...

Page 318: ...ile handling the ECD micro cell When you are finished dispose of the gloves and wash your hands with soap and water 1 Remove the detector as described in the Replacing the entire detector detector cell procedure in this section 2 Loosen the locking tab screw on top of the detector slide the locking tab back and pivot it out of the away Figure 341 6 Unlocking the thermal cover 3 Lift the thermal co...

Page 319: ...lent 6890 Gas Chromatograph Service Manual Figure 341 7 Removing the heater sensor 4 Removethetwoscrewsholding the upperheatedblock ontothe assembly Carefully lift the block over the anode lead and remove 5 Slide the heater and sensor out of the lower heated block Heater blocks Heater sensor assembly ...

Page 320: ...t into the µ ECD cell 1 Remove the detector as described in the Replacing the entire detector detector cell procedure in this section 2 Remove the Torx T 20 screw holding the pneumatics block s to the detector manifold Note There are two pneumatics blocks on the EPC version of the µ ECD pneumatics manifold The outside block is the anode purge gas line and the inside block is the make up gas line 3...

Page 321: ...tors Agilent 6890 Gas Chromatograph Service Manual Figure 341 8 Proper configuration of the column and makeup gas tubing NEED GRAPHIC Makeup gas adapter Column nut Column 70 to 72 mm Coil loops around bottom of detector and makeup gas adapter connection Microbore Column Column does not protrude ...

Page 322: ...ntains one inlet supply fitting for a purge make up gas WARNING Before proceeding turn off the oven and any heated zones and let them cool down Turn off any detector gases at their supply then turn off the main power switch and unplug the power cord 1 Remove the top plastic covers from the detector and pneumatics areas Also remove the RFI metal shield and the top rear metal cover 2 Remove the gas ...

Page 323: ...manifold and remove the block Caution Always hold the Type 2 manifold by its support bracket to avoid damaging board components 7 Slide the manifold from its slot Note There are two pneumatics blocks on the EPC version of theµ ECD pneumatics manifold The outside block is the anode purge line and the inside block is the makeup gas line Figure 341 9 Removing an EPC detector flow manifold Type 2 mani...

Page 324: ...witch and unplug the power cord Caution Always hold the manifold as shown below to avoid damaging board components 1 While holding the manifold by the black plastic frame as shown below slip the label through the slot in the mounting bracket and align the bracket holes over the gas fittings 2 Finger tighten three 7 16 inch hex nuts over the fittings to hold the bracket in place It is very importan...

Page 325: ...bel from its backing and paste it on the mounting bracket over the screw heads 4 If the tubing from the gang fitting bends to the left reshape it so that it bends up and back from the block as shown in Figure 341 12 Finger tighten nuts Do not use a wrench FPD shown above 7 16 inch hex nut Mounting bracket ID tag through Ribbon cable Gang fitting installs here Cover screw slot in bracket blank labe...

Page 326: ...g Be sure the left tube clears the inner edge of the bracket See Figure 341 12 Be sure that the O rings are in place Tighten the gang fitting screw firmly to compress the O rings 6 Route the ribbon cable behind the manifold assembly as shown in Figure 341 11 Then slide the manifold and bracket assembly into the slot until the bracket seats flush against the end of the rails See Figure 341 12 Figur...

Page 327: ...t the ribbon cable to the mating connector on the pneumatics board Arrange the cable to keep it away from the valves and keep it from being pinched between board components and the manifold For the back detector you may want to loosen the manifold and slide it out of thecarrier a few centimeters toconnect thecable tothepneumatics board Then reinstall the manifold 9 Secure the manifold in place usi...

Page 328: ... installed in the GC See Figure 341 13 Figure 341 13 Top rear panel cutouts 11 Place the new top rear panel on its left most mounting screw Working from left to right and using the screw as a hinge slide each manifold ID tag through its cutout in the panel When all the tags are through the panel finish installing the panel on the GC 12 Install the RFI shield the pneumatics cover and the detector t...

Page 329: ...e 341 14 Figure 341 14 Gas line connection 14 Restore gas pressures and leak test the fittings Removing the signal board Caution Make sure you are properly grounded with an ESD strap before continuing 1 Remove both the electronics top cover and the right side cover 2 Remove the Torx T 20 screw securing the top cover and remove the cover 3 Disconnect the signal wire from the signal board interconne...

Page 330: ...µ ECD 341 Replacement procedures Figure 341 15 Removing the top cover and anode signal wire 4 Remove the screw and clamp on the electrical interconnect 5 Remove one Torx T 20 screw from each end of the signal board Do not remove the screw on the top of the cover Remove detector top cover Remove anode signal wire ...

Page 331: ... interface board and lift the signal board from the detector pallet 7 Reassembly is the reverse of removal Replacing the detector interface card The µ ECD detector has an interface board off of the main board as shown below Caution Make sure you are properly grounded with an ESD strap before continuing 1 Unlock and unclip the ribbon cable from the interface board 2 Remove the screw at the top of t...

Page 332: ... Chromatograph Service Manual Micro cell Electron Capture Detector µ ECD 341 Replacement procedures Figure 341 17 Location of detector interface board board installed in back detector position Detector card screw Ribbon cable µ ECD detector board ...

Page 333: ...ast 2 hours and up to 24 hours before running the frequency test If you will be injecting into an unused inlet you must use low bleed septa Make sure to condition new septa before use in an inlet for several hours with 1 to 5 mL min carrier flow 1 Make sure you are using normal operating conditions and that at least 2 hours have elapsed since the last run 2 Turn on the µ ECD and the corresponding ...

Page 334: ... from the detector gas supply tubing inlet column fittings are leak free perform the following µ ECD detector leak test 1 With the GC on and operating normally set the oven detector and inlet temperatures to ambient 2 Turn off the µ ECD and then turn off the inlet pressure 3 Turn off the anode and makeup gas flows 4 Cap the µ ECD exhaust vent with a vent plug part no 5060 9055 5 Set carrier gas pr...

Page 335: ...m flow system components are leaking check for leaks at the column fitting and pluggedinlet If you find leaks tighten the fittings and repeat the leak test Note If you can find no other leaks the µ ECD itself is probably leaking The µ ECD cannot be disassembled without special license from the Nuclear Regulatory Commission or Agreement State Licensing Agency USA only ...

Page 336: ...o β and x radiation bremsstrahlung WARNING To prevent possible hazardous contamination of the area with radioactive material the detector exhaust vent must always be connected to a fume hood or otherwise vented in compliance with the latest revision of Title 10 CFR Part 20 or with state regulations with which the Nuclear Regulatory Commission has entered into an agreement USA only For other countr...

Page 337: ... the first reading Performing a radioactivity leak test wipe test Micro cell ECDsmust be tested forradioactiveleakageat least every6 months Records of tests and results must be maintained for possible inspection by the Nuclear Regulatory Commission and or responsible state agency More frequent tests may be conducted when necessary The procedure used is the wipe test A Wipe Test Kit part no 18713 6...

Page 338: ...and emit light A narrow bandpass filter selects light unique to one species while a shield prevents intense carbon emission from reaching the photomultiplier tube PMT The light strikes a photosensitive surface in the PMT where a light photon knocks loose an electron The electron is amplified inside the PMT for an overall gain of up to a million The current from the PMT is amplified and digitized b...

Page 339: ...le burner module with one PMT housing Either sulfur or phosphorus can be detected by installing an appropriate optical filter in the PMT housing The sulfur filter is blue purple and transmits at 393 nanometers The phosphorus filter is yellow green and transmits at 525 nanometers Makeup H2 Air Filter frits Proportional valves Pressure sensors Restrictors Shield Vent PMT Wavelength filter Window Emi...

Page 340: ... phosphorus filter Because the optimum gas flows for these elements are quite different performance of this detector is necessarily a compromise Two signal channels and two electrometer boards are used one for each PMT The Back Det control table runs the detector while the Front Det operates in a special signal only mode Operating conditions In order for the FPD to operate properly the temperature...

Page 341: ...ctor assembly 2 Allow time for heated zones to cool to safe temperatures 3 Turn off all gas flows at the source 4 Inside the oven remove the column to the FPD Caution To avoid damaging the printed circuit board electronics use a grounded wrist strap part no 9300 1408 and connect it to a bare metal surface of the GC 5 Trace the wires from the heater sensor cables to their connections on the GC Note...

Page 342: ...ent procedures Figure 350 2 Replacing the FPD assemblies 6 Trace the ignitor cable from the FPD to its source on the detector board and disconnect it Note the locations of the signal and high voltage cables then remove them from the board Type 1 manifold assembly Detector assembly Valve bracket assembly Detector PCB ...

Page 343: ... rings in the gang fitting and replace if damaged Straighten the tubing from the gang fitting and slide the module out of the GC 9 Remove the four mounting screws in the FPD bracket and remove the FPD 10 Reassemble in reverse order Column installation Special FPD adapters The FPD uses special adapters for capillary columns and 1 8 inch OD PTFE columns The FPD Capillary Adapter allows fused silica ...

Page 344: ... extends about 153 mm from the end of the ferrule The optimum height may be higher or lower depending on sample type and detector flow rates If the column is too high it can be exposed to the detector flame If the column is too low the sample may be exposed to hot stainless steel which can result in slight peak tailing Mark the column at a point even with the bottom of the nut White typewriter cor...

Page 345: ...heric contaminants can dirty both quartz windows the filter and or the photomultiplier tube window Contamination anywhere along the light path between flame and PMT can reduce detector sensitivity 1 Turn the electrometer off 2 Turn hydrogen air and auxiliary gas supplies to the detector off Turn the heaters off Wait for the detector to cool Caution Always turn the electrometer off before removing ...

Page 346: ...tube Be careful to not scratch the surfaces do not use a cleaning fluid that might leave a film upon drying Keep the open end of the PMT covered whenever practical to avoid light damage to the tube Figure 350 4 Removing the PMT filter 5 Inspect the filter chips scratches and or cracks in the light path scatter light reducing detector sensitivity Replace filters as necessary Inspect the PMT window ...

Page 347: ...hromatograph Service Manual 6 Remove the four screws in the PMT adapter flange and remove the flange Use care as a quartz window is exposed and may fall out Clean the window using lens tissue Figure 350 5 FPD disassembly O ring Viton 0 ring Window second heat shield 0 ring Flange adapter Flange ring Clamp ...

Page 348: ... to the flame may stick when the detector is cold It is easier to remove when the detector is warm but be careful to avoid burns Figure 350 6 Removing the first heatshield window 8 Note the placement and types of seals found on the disassembled parts Seals should be replaced with new parts on reassembly 9 Inspect the windows chips scratches cracks or fogging in the light path scatter light reducin...

Page 349: ... properly service the jet the detector module should be removed from the instrument followed by appropriate service 1 Turn off power to the gas chromatograph and disconnect the main power cord Remove the detector covers 2 Allow time for heated zones to cool to safe temperatures Caution Always turn the electrometer or the main power off before removing the PMT housing to avoid destroying the tube 3...

Page 350: ...nsfer tube 8 Carefully lift the detector module and jet assembly off of the transfer tube and out of the GC Be careful not to damage the fused silica gigabore liner When cleaning or replacing the jet it is not necessary to disconnect any plumbing ignitor leads or the heater sensor Leave all attached and disconnect the detector block from the transfer line at the Swagelok fitting then gently lift t...

Page 351: ... and clean deposits from the jet bore using a suitable wire If the jet is damaged in any way it should be replaced It is good practice to replace the jet rather than try to clean it particularly when extremely high sensitivity is required 12 A new O ring seal must be used when reinstalling the jet into the burner chamber Caution Be careful not to crush or side load the fused silica liner when rein...

Page 352: ...otomultiplier tube assembly or assemblies from the detector module also remove the filter s Set them in a safe place Keep the open endof thePMT covered wheneverpractical to avoid light damage to the tube 5 Locate the ignitor cable attached to the side of the detector Trace the cable back to the printed circuit board and disconnect it there 6 Remove the exhaust tubing and the sheet metal cover on t...

Page 353: ...vice Manual Figure 350 8 Replacing the transfer line fused silica liner 9 Remove the transfer line nut and its ferrule the heater sensor cable assembly and the heated block Figure 350 9 Removing the transfer tube Ignitor cable Transfer line nut Heater sensor cable assembly Heater block U clamp screws Liner Transfer tube ...

Page 354: ...emove the fused silica liner and the 1 16 inch Vespel ferrule by pulling the fused silica liner and ferrule out from the bottom Inspect for damage Figure 350 10 Replacing the fused silica gigabore liner 11 If necessary install a new fused silica liner and Vespel ferrule When doing so carefully feed the fused silica liner through the O ring at the top of the transfer line so as not to damage the O ...

Page 355: ...instrument orient it properly and install the four screws to hold it Install the top cover and the exhaust tubing 16 Connect the ignitor cable to the printed circuit board 17 Install the PMT assembly or assemblies 18 Restore normal operating conditions Replacing the photomultiplier tube If the PMT is defective high voltage on and the flame lit low or no signal and or high noise not attributed to a...

Page 356: ... that the missing pin on the tube base is lined up with the gap in the socket contacts 6 Reassemble in the reverse order Make sure grease fingerprints dust etc are removed from the PMT window facing the detector module Be sure that the O ring is in place on the PMT resistor bridge network assembly as this is a critical light seal If the O ring is lost or damaged replace it 7 Screw the end cap onto...

Page 357: ...er or the main power off before removing the PMT housing to avoid destroying the tube 3 Pull the PMT housing off the detector module and remove the filter from the detector Set both in a safe place Keep the open end of the PMT covered whenever practical to avoid light damage to the tube 4 Remove the exhaust tubing 5 Remove the sheet metal cover On the single wavelength detector it is held by two s...

Page 358: ...lok connection between the jet assembly and the heated transfer tube 9 Carefully lift the detector module and jet assembly off of the transfer tube and out of the GC Be careful not to damage the fused silica gigabore liner It is not necessary to disconnect any plumbing or ignitor leads Leave all attached and disconnect the detector block from the transfer line at the Swagelok fitting then gently l...

Page 359: ...lways turn the electrometer or the main power off before removing the PMT housing to avoid destroying the tube 3 Pull the PMT housing off the detector module and remove the filter from the detector Set both in a safe place Keep the open end of the PMT covered whenever practical to avoid light damage to the tube 4 Remove the exhaust tubing 5 Remove the sheet metal cover On the single wavelength det...

Page 360: ...he ignitor glow plug 6 Remove the ignitor cable 7 Unscrew the connector and ignitor assembly from the detector module 8 Remove the O ring ignitor spacer and glow plug from the ignitor assembly Replace the glow plug Inspect the O ring and spacer and replace if needed 9 Reassemble in reverse order Glow plug Ignitor cable O ring Spacer Connector Ignitor cable ...

Page 361: ...ove the RFI metal shield and the top rear metal cover 2 Remove the gas supply fittings from the manifold 3 At the front of the manifold remove the Torx T 20 screw that holds the manifold in its slot 4 Disengage the detector tubing from the slots in the chassis so that the gang fitting on the manifold can be removed easily Caution Make sure you are properly grounded with an ESD strap before continu...

Page 362: ...FPD flow manifold Caution Always hold the Type 2 manifold by its support bracket to avoid damaging board components 7 Remove the manifold from its slot Installing a Type 2 manifold WARNING Hydrogen gas is flammable and potentially explosive Before replacing the manifold turn off the hydrogen gas at the source Remove the screw Type 1 manifold Type 2 manifold ...

Page 363: ...g the power cord Caution Always hold the manifold as shown below to avoid damaging board components 1 While holding the manifold by the black plastic frame as shown below slip the label through the slot in the mounting bracket and align the bracket holes over the gas fittings 2 Finger tighten three 7 16 inch hex nuts over the fittings to hold the bracket in place It is very important that you do n...

Page 364: ... See Figure 350 16 4 If the tubing from the gang fitting bends to the left reshape it so that it bends up and back from the block as shown in Figure 350 17 5 Insert the gang fitting through the cutout in the manifold bracket and install it onto the new manifold assembly so that the tubing runs back and away from the fitting Finger tighten nuts Do not use a wrench 7 16 inch hex nuts Mounting bracke...

Page 365: ...re that the O rings are in place Tighten the gang fitting screw firmly to compress the O rings 6 Route the ribbon cable behind the manifold assembly as shown in Figure 350 16 Then slide the manifold and bracket assembly into the slot until the bracket seats flush against the end of the rails See Figure 350 17 Figure 350 16 Routing the ribbon cable Back view of manifold Manifold installed with cabl...

Page 366: ...the manifold and over the top of the chassis Run it directly to the detector do not run it through the slots 8 Connect the ribbon cable to the mating connector on the pneumatics board Arrange the cable to keep it away from the valves and keep it from being pinched against the manifold For the back detector you may want to loosen the manifold and slide it out of the carriera few centimetersto conne...

Page 367: ...8 Top rear panel cutouts 11 Place the new top rear panel on its left most mounting screw Use the screw as a hinge and angle the panel while sliding each manifold ID tag through its cutout in the panel working from left to right When all the tags are through the panel finish installing the panel on the GC 12 Install the RFI shield the pneumatics cover and the detector top cover 13 Connect the sourc...

Page 368: ...Jun 2001 Detectors Agilent 6890 Gas Chromatograph Service Manual Flame Photometric Detector FPD 350 Replacement procedures Figure 350 19 Gas line connections 14 Restore gas pressures and leak check all fittings ...

Page 369: ...well worth the investment Detector and gas cleanliness must be maintained to have consistent responses Since most sulfur and phosphorus compounds contain chemically active sites the injection and column systems must be kept very clean PMT saturation The photomultiplier tube may saturate if light intensity is too high When this happens increasing concentration produces little or no increase in sign...

Page 370: ...the visual display is often only a few counts To verify flame ignition remove the vent line from the top of the detector and hold a mirror or shiny surface near the aluminum exhaust tube If the flame is lit condensation will form on the mirror Check the displayed air flow rate The display should go to 200 mL min while trying to ignite to flame If not there is insufficient supply pressure 2 Check t...

Page 371: ...stics 34 of 36 Jun 2001 Detectors Agilent 6890 Gas Chromatograph Service Manual 6 The sulfur mode can be particularly hard to light Try changing to the phosphorus mode flows lighting the flame and gradually alter the flows to the sulfur values ...

Page 372: ...ssure do not exceed 210 kpa 30 psig Higher pressures may damage the detector block window or seals 2 Turn one of the gases on for a few seconds and then turn it off The indicated flow pressure should remain constant or drop slowly If not there is a leak in the system Begin checking possible leak sources and monitor the flow number to determine when the leak has been eliminated Potential leaks area...

Page 373: ...350 Flame Photometric Detector FPD Leak testing 36 of 36 Jun 2001 Detectors Agilent 6890 Gas Chromatograph Service Manual ...

Page 374: ...e downstream of the frits If the Zero resistance frit is installed the user must provide flow resistance downstream and generate the pressure flow relationships WARNING When hydrogen is used dangerously high flows are possible if insufficient flow resistance is provided downstream of the supply tube Always use either the High Blue Dot or Medium Red Dot frit with hydrogen External flow restrictor T...

Page 375: ...aph Service Manual 19234 60660 blue dot 19231 60770 red dot 19231 60610 brown dot 10 0 80 20 30 40 50 60 70 Minimum source pressure psig 0 1 100 0 1000 0 1 0 10 0 Gas flow in mL min Pressure requirements for AUX EPC flow restrictors with air nitrogen or helium ambient conditions 25 C 14 7 psia ...

Page 376: ...C 360 Theory of operation 19234 60660 blue dot 19231 60770 red dot 19231 60610 brown dot 10 0 80 20 30 40 50 60 70 0 1 100 0 1000 0 1 0 10 0 Pressure requirements for AUX EPC flow restrictors with hydrogen ambient conditions 25 C 14 7 psia Gas flow in mL min Minimum source pressure psig ...

Page 377: ...n off the oven and any heated zones and let them cool down Turn off all detector gases at their supply then turn off the main power switch and unplug the power cord 1 Remove the pneumatics cover the RFI shield the detector cover the electronics cover the right side cover and the top rear panel 2 Remove the gas supply tubing from the present manifold See Figure 360 1 Figure 360 1 Remove the gas con...

Page 378: ...d easily See Figure 360 2 Caution Always hold the Type 2 manifold by its support bracket to avoid damaging board components 5 Unlock the manifold s ribbon cable from the pneumatics control board and detach the connector The adjacent ribbon cable may have to be removed as well 6 Remove the one Torx T 20 screw holding the gang fitting on the manifold See Figure 360 3 Caution Do not lose the O rings ...

Page 379: ...Type 2 manifold See also Replacing the PCB bracket WARNING Hydrogen gas is flammable and potentially explosive Before replacing the manifold turn off the hydrogen gas at the source WARNING Before proceeding turn off the oven and any heated zones and let them cool down Turn off all detector gases at their supply then turn off the main power switch and unplug the power cord Caution Always hold the m...

Page 380: ...own below slip the label through the slot in the mounting bracket and align the bracket holes over the gas fittings 2 Finger tighten three 7 16 inch hex nuts over the fittings to hold the bracket in place It is very important that you do not tighten the nuts yet See Figure 360 4 Hold manifold by the black plastic frame Slip label tag through the slot in the bracket FPD shown ...

Page 381: ...its backing and paste it on the mounting bracket over the screw heads See Figure 360 4 4 If you need to change one or more auxiliary channel frits do so now See the Agilent 6890 GC Operating Manual CD ROM Finger tighten nuts Do not use a wrench FPD shown above 7 16 inch hex nuts Mounting bracket Gang fitting Label ID tag Ribbon cable installs here through slot Apply blank label in bracket ...

Page 382: ...nifold assembly so that the tubing runs back and away from the fitting Be sure that the three O rings are in place Be sure the left tube clears the inner edge of the bracket See Figure 360 6 Tighten the screw on the gang fitting until the gang fitting touches the manifold 7 Routetheribbon cable to theright sideof the manifold assembly asshown in Figure 360 5 Then slide the manifold and bracket ass...

Page 383: ...behind the connector for the back detector and faces up See Figure 360 7 10 Secure the manifold in place using the Torx T 20 mounting screw See Figure 360 2 Figure 360 7 Auxiliary and back detector connectors 11 If thedetectorcable isin the way removeit temporarily whileyouconnect the Aux cable Arrange the cable to keep it away from the valves and keep it from being pinched against the manifold At...

Page 384: ... for Auxiliary Also remove any cutouts needed to access other manifolds or accessories installed in the GC See Figure 360 8 Figure 360 8 Top rear panel cutouts 14 Place the new top rear panel on its left most mounting screw Use the screw as a hinge and angle the panel while sliding each manifold ID tag through its cutout in the panel working from left to right When all the tags are through the pan...

Page 385: ...Aux EPC label 16 Install the RFI shield the pneumatics cover and the detector top cover 17 If using hydrogen or other flammable gases install an external flow restrictor part no G1530 80380 on each fitting that will be used for a flammable gas 18 Check for leaks Restore the GC to operating condition 1 Plug in the GC and turn it on Gas outlet block Attach label here External flow restrictor install...

Page 386: ...This is not an error After the gases are connected and the detector is operational the actual flow values will be equal to the setpoint values 3 If the display reads Aux not installed recheck your cable connections 4 Zero the pressure sensors a Make certain that no gases are connected to your manifold b Press Options and scroll to Calibration Aux pressure c Scroll to Aux 3 zero and press On d Scro...

Page 387: ...estore gas pressures and leak check all fittings Changing an auxiliary channel frit 1 Locate the block that connects the three gas outlet tubes for the auxiliary channels to the pneumatics module 2 Remove the screw that holds the block to the pneumatics module Pull the block free of the module and rotate it so that the frits are on top Aux 3 outlet Aux 4 outlet Aux 5 outlet Aux 4 frit Aux 5 frit A...

Page 388: ...uxiliary EPC 360 Replacement procedures 3 Pull the frit to be changed out of the block Also remove the O ring that seals it 4 Place an O ring on the new frit Place the O ring frit combination in the block 5 Reconnect the block to the pneumatics module Tighten the screw firmly ...

Page 389: ...360 Auxiliary EPC Replacement procedures 16 of 16 Jun 2001 Detectors Agilent 6890 Gas Chromatograph Service Manual ...

Page 390: ...400 Mainframe How to maintain and replace the major components on the 6890 instrument 410 Covers and Fans 420 Oven and Temperature Control 430 Power Electronics Replacement ...

Page 391: ......

Page 392: ...l 410 Covers and Fans Plastic covers Figure 410 1 Plastic covers ALS tray bracket replaces Injection port fan cover Injection port cover Left side cover Pneumatics cover Detector cover Electronics carrier cover Right side cover Injection port cover on GC s with S N 20 000 ...

Page 393: ...nd Fans Metal covers 2 of 20 Jun 2001 Mainframe Agilent 6890 Gas Chromatograph Service Manual Metal covers Figure 410 2 Metal covers Pneumatics RFI shielding Top rear cover Bottom rear cover Oven exhaust deflector ...

Page 394: ...sure to wear an ESD strap grounded to the 6890 GC chassis while performing this procedure 1 Remove the GC s right side cover 2 Reach under the electronics carrier cover and depress the rear locking tab towards the front of the instrument Figure 410 3 Removing the electronics cover 3 While depressing the tab lift up on the back of the electronics carrier cover and slide the cover back up and out of...

Page 395: ...owardyou andpivot it up Figure 410 4 Removing the detector cover 3 Push the metal pin behind the clip to the left 4 Slide the detector cover to the right and lift it off 5 To replace the top cover a Slide the plastic post on the left side of the cover into the hole on the injection port fan cover b Line up the hole in the tab on the right side of the cover with the metal pin and push the pin to th...

Page 396: ...rvice Manual Covers and Fans 410 If your detector cover rests on a post on the electronic cover 1 Raise the detector cover to the straight up position 2 Tilt the cover to the left to remove it Figure 410 5 Removing the detector cover Top cover Electronics cover ...

Page 397: ... be installed Examine the area behind the detector locations If there is a metal hinge present it must be removed so that the new detector top cover can be installed Figure 410 6 Locating the metal hinge if present 1 The hinge if present is held to the oven top by two rivets and to the bracket behind it by one rivet Use a 1 4 inch bit in an electric drill to remove the three rivets Discard the hin...

Page 398: ... cover Figure 410 7 Removing the hinge 2 Install the new electronic carrier cover Holding the detector cover upright tilt it to the left and insert the left hand pin of the into the hole in the inlet fan cover Rest the right side hinge on the electronics carrier cover pin See Removing the detector cover for more details ...

Page 399: ...s in the top of the cover with any pneumatics fittings and regulator dials and snap it back into place Removing the pneumatics RFI shielding An aluminum cover shields the top of the pneumatics area at the top rear of the instrument 1 Remove the plastic pneumaticscover and remove the one Torx T 20screw from the top of the metal RFI shielding 2 From the rear of the GC slide the RFI shielding to the ...

Page 400: ...loosen the two captive screws Torx T 20 at the top of the cover Figure 410 9 Removing the left side cover 2 Slide the side cover slightly to the rear of the GC and lift the cover out of the slot in the bottom of the chassis to remove it When replacing the cover be sure any wires or pneumatic lines are properly routed so that they are not pinched by the cover ...

Page 401: ...matograph Service Manual Removing the right side cover 1 Fully loosen the two captive screws Torx T 20 at the top of the cover Figure 410 10 Removing the right side cover 2 Slide the side cover slightly to the rear of the GC and lift the cover out of the slot in the bottom of the chassis to remove it ...

Page 402: ...w to remove this bracket 1 Remove the two screws located on the under side of the rounded end of the tray bracket assembly using a T 20 Torx driver 2 Remove the two screws at either end of the tray mounting strap using a T 20 Torx driver 3 Remove six screws attaching the bracket assembly to the inlet chassis using a T 20 Torx driver Lift the assembly straight up Figure 410 11 Removing the ALS tray...

Page 403: ...rier cover is the blue plastic cover mounted over the two inlet ports To remove the cover fully loosen the six Torx T 20 screws on the top of the cover and lift off the cover Some or all the screws are captive in the cover Figure 410 12 Removing the inlet carrier cover When re installing the cover make sure that all plumbing and wires are properly routed in their channels ...

Page 404: ...ts underneath the blue cover 1 Remove the left side cover 2 Remove the blue cover from the inlet carrier 3 Unclip the four wiring harnesses from the left side of the inlet carrier Figure 410 13 Removing the inlet carrier 4 Disconnect the fan from the connector to the right of the fan on the oven top 5 Remove any installed inlets 6 Remove the four screws Torx T 20 from the top of the carrier and re...

Page 405: ...per the transformer and the AC power board Removing the top rear cover 1 Remove the plastic pneumatics top cover and the metal RFI shielding cover over the auxiliary and detector pneumatic slots as described in this section 2 Loosen the four Torx T 20 screws on the top rear cover Figure 410 14 Loosening the screws on the top rear cover 3 Slide the cover slightly up until it is free from the screws...

Page 406: ...I shielding as described in the previous procedure 2 Remove the two Torx T 20 screws and washers on the bottom of the cover Figure 410 15 Removing the screws on the bottom rear cover 3 Slide the cover slightly up until it is free from the top screws Pull the cover straight off the GC 4 When replacing the bottom rear cover be sure to reinstall the two lock washers on the bottom screws ...

Page 407: ...jection port fan cools the injection ports by drawing air from under the inlet carrier across the installed inlets 1 Remove the injection port fan cover as described in this section 2 Disconnect the fan s wiring harness from the main wiring harness to right of the fan on top of the oven 3 Grasp the fan and snap it up and out of the inlet carrier Note When installing a new fan be sure to install it...

Page 408: ...e proceeding Caution Be sure to wear an ESD strap grounded to the 6890 GC chassis while performing this procedure 1 Remove the right side cover from the instrument 2 Disconnect the display and keyboard ribbon cables from the main board P11 P12 P13 Figure 410 16 Screw and keyboard display connector locations 3 Remove the three 1 4 inch screws attaching the keyboard to the chassis There are two on t...

Page 409: ...ough thepneumaticsarea The fan mountseitherdirectly into the pneumatics chassis or into a bracket which mounts into the chassis Examine your GC to determine the type of pneumatics fan installed Chassis mounted fan 1 Remove the pneumatics cover the top rear panel and the bottom rear panel You may need to remove the RFI cover 2 Disconnect the fan s connector from the main wiring harness 3 Remove the...

Page 410: ...s 410 Removing the pneumatics area fan Figure 410 17 Replacing the pneumatics area fan Bracket mounted fan 1 Remove the pneumatics cover the top rear panel and the bottom rear panel You may need to remove the RFI cover 2 Disconnect the fan s connector from the main wiring harness Air Flow ...

Page 411: ...t the retaining clip securing the fan in the bracket and slide the fan out of the two retaining tabs Remove the old fan 5 Lift the retaining tab and insert the new fan Be sure to orient the fan so that the arrow points downward when installed and the wires are on the right side Slide the fan under the retaining tabs until it snaps into place 6 Slide the tabs on the back of the fan bracket into the...

Page 412: ...romatographic channel i e Front Inj Front Det and Aux 1 OR Back Inj Back Det and Aux 2 Any single zone can be 150 watts or less The 6890 GC will not allow configurations over 440 watts to operate The detector zones can only be temperature programmed from a ChemStation There are two auxiliary zones Aux 1 and 2 and each supports three temperature ramps There is no cooling provided for ramped zones e...

Page 413: ...ess Config Aux and select 1 if the MSD is installed in the front position or 2 for the back position 2 Press Mode Type 3 Use the scroll keys to select MSD as the Aux zone type Press Enter If you do not configure the Aux zone for MSD Warning 101 Invalid heater power for front back detector inlet and aux 1 2 will appear on the GC display and the heated zones will be set to not installed 100 120 V ov...

Page 414: ...does not heat Faulty fuse F1 or F2 on power supply PCB Check replace both fuses Oven heater is open Check resistance of oven heater Faulty power supply PCB Replace power supply PCB Faulty fuse F1 or F2 on main PCB Check replace both fuses Faulty main PCB Replace main PCB Oven does not control Fast oven but GC configuration is for regular oven Oven flap stuck Faulty main PCB Check oven configuratio...

Page 415: ...re properly grounded with an ESD strap before continuing 1 Turn the instrument power off 2 Disconnect the oven heater leads P3 P4 from the AC power board 3 Use an ohmmeter to measure resistance at the connectors Acceptable resistance ranges Acceptable resistance ranges in ohms are given below Acceptable resistances range from the nominal value for a new cold heater to 5 from the nominal value Note...

Page 416: ... WARNING Before proceeding turn off the oven and let it and any heated zones cool down Turn off the main power switch and unplug the power cord 1 Remove the left side cover on the instrument and remove the plug for the cryo valve If a manual inlet carrier is installed on the left side of the instrument remove its left cover by removing the two bottom thumb screws sliding the panel towards the back...

Page 417: ... the GC CO2 valve shown 5 Plumb the valve to the liquid nitrogen or carbon dioxide source 6 Plug the cryo valve s wiring harness into the five pin connector to the left of the valve 7 Route the cryo tubing through the cutout in the GC s side cover and reinstall the cover If a manual inlet carrier is installed route the cryo tubing out of the slot in the back of the carrier Cryo wiring harness ...

Page 418: ...installed on the left side of the instrument remove its left cover by removing the two bottom thumb screws sliding the panel towards the back of the instrument and lifting it off 2 Shut off the cryo fluid supply and crack the valve at the supply to release any residual pressure 3 Use a 9 16 inch wrench to disconnect the cryogenic fluid supply tube at the cryo valve 4 Disconnect the cryo valve s wi...

Page 419: ...ryogenic nozzle proceed as follows a Use a 9 16 inch wrench to unscrew the old nozzle Discard the nozzle b Wrap the threads of the new nozzle with Teflon tape being careful not to cover the first two threads of the nozzle c Screw on the new nozzle and tighten firmly with a 9 16 inch wrench Figure 420 2 Removing the valve from the valve bracket N2 valve shown 8 Insert the cryogenic valve probe thou...

Page 420: ...igure 420 3 Cryo blast attachments 11 Plumb the valve to the liquid nitrogen or carbon dioxide source 12 Plug the cryo valve s wiring harness into the connector to the left of the valve 13 Route the cryo tubing through the cutout in the GC s side cover and reinstall the cover If a manual inlet carrier is installed route the cryo tubing out of the slot in the back of the carrier Front inlet cryo bl...

Page 421: ...bly The oven sensor may be replaced separately WARNING Before proceeding turn off the oven and let it and any heated zones cool down Turn off the main power switch and unplug the power cord Caution Make sure you are properly grounded with an ESD strap before continuing 1 Remove the GC s rear covers 2 Disconnect the two oven heater leads P3 P4 from the AC power board Figure 420 4 Disconnecting the ...

Page 422: ...m the main PCB Figure 420 5 Disconnecting the sensor lead on the main board 4 From inside the oven remove the columns column nuts detector fittings and other hardware preventing access to the shroud 5 Remove the bottom two screws and loosen the top two screws on the corners of the shroud Torx T 20 Slide the shroud down and tilt the top out and remove the shroud from the oven P16 ...

Page 423: ...vice Manual Figure 420 6 Removing the shroud 6 From inside the oven draw the heater and sensor leads into the oven and remove the fan shroud 7 Reassembly is the reverse of removal Note that when reconnecting the heater leads to P3 and P4 on the AC board either of the leads may be connected to either of the connectors Loosen Remove ...

Page 424: ... cord 1 Remove the oven shroud as described in the Replacing the oven shroud assembly procedure in this section 2 Loosen the two Torx T 20 screws securing the sensor retainer to the back of the shroud Figure 420 7 Removing the shroud 3 Slide the old sensor out of the retainer Thread a new sensor through the opening in the rear of the oven 4 Slide the new sensor under the retainer One of the grill ...

Page 425: ...the oven and let it and any heated zones cool down Turn off the main power switch and unplug the power cord 1 Remove the columns column nuts and other hardware preventing access to the fan 2 Remove the four Torx T 20 screws securing the fan shroud to the instrument and swing the left side of the shroud out towards you Figure 420 8 Removing the set screw on the oven fan shaft inside oven ...

Page 426: ...re proceeding turn off the oven and let it and any heated zones cool down Turn off the main power switch and unplug the power cord Caution Make sure you are properly grounded with an ESD strap before continuing 1 Turn off the GC and unplug the power cable 2 Remove the fan as described in the Replacing the oven fan procedure earlier in this chapter 3 Remove the rear covers from the instrument 4 Unp...

Page 427: ...rature Control Replacing the oven fan motor 16 of 20 Jun 2001 Mainframe Agilent 6890 Gas Chromatograph Service Manual Figure 420 9 Removing the oven fan motor 7 Remove the fan motor 8 Reassembly is the reverse of removal ...

Page 428: ...ng turn off the oven and let it and any heated zones cool down Turn off the main power switch and unplug the power cord 1 Remove the left side cover and the rear covers to the instrument 2 On the left side of the GC when facing its front disconnect the oven flap motor wiring harness from the main wiring harness 3 Loosen the three Torx T 20 screws securing the flapper bracket to the instrument and ...

Page 429: ...Removing the flapper assembly 4 Remove the two Torx T 10 screws securing the motor and flapper assembly to the bracket and remove the motor flappers from the bracket 5 Remove the Torx T 20 screw at the bottom of the flapper shaft near the flap motor and disconnect the motor from the flappers 6 Reassembly is the reverse of removal Shroud Motor Flappers ...

Page 430: ...g oven or the reverse these components must be changed The oven heater see Configuring the oven Internal fuses see section 1230 Power circuitry see section 1230 Configuring the oven GC oven type will be properly configured at the factory If you convert a regular oven to a fast heating oven or the reverse and have the correct electric service installed you must reconfigure the GC to use the new ove...

Page 431: ...420 Oven and Temperature Control Converting the oven type 20 of 20 Jun 2001 Mainframe Agilent 6890 Gas Chromatograph Service Manual ...

Page 432: ...ed on a metal carrier bracket on the right side of the instrument The board and the bracket are replaced as an assembly 1 If any external detectors are installed on the right side of the instrument through the large cut out on the main board disconnect them now 2 Remove any detector interface boards P1 P2 from the main board 3 Disconnect the cables from the following connectors J7 AC Power J8 Inte...

Page 433: ...racket P22 Valve box and aux heated zones After disconnecting the EPC ribbon cable P3 and AC Power harness J7 pull them back through their slots and out of the way Figure 430 1 Main board connectors 6890A and 6890 Plus Hole for transformer Oven Access Cutout Beeper P11 P2 P12 P13 P17 P15 DSP Gate Array CPU GND 4 ROM Sockets 3V Lithium battery Gate Array P16 P21 P22 P3 J1 J2 JP1 JP2 J4 J6 J5 F2 F1 ...

Page 434: ...bles from the connectors on the back of the instrument 5 If any valve actuators were installed unclip the wiring harness from each actuator and pull the connectors out of the actuator bracket 6 Remove the two screws securing the actuator bracket and remove the bracket 24V 15V GND 24V 15V 5V 10V REF GND P2 F4 F5 P11 P12 P13 P1 P2 P21 P3 P22 P18 J7 P16 P19 P17 P4 P5 P6 J1 J2 JP1 J4 J6 P14 ...

Page 435: ... card and the support bracket as described below a Loosen the two spring loaded captivated screws on the back of the instrument and slide the card out b Remove the MIO support bracket c Remove the three screws on the back of the instrument and the one screw in the standoff on the side of the instrument Figure 430 3 Removing the card and three screws on the back of the GC ...

Page 436: ...ement 430 Replacing the main board Figure 430 4 Removing the MIO support bracket and jumper card d Pull out the MIO jumper card P15 from the main board 8 Remove the three 1 4 inch hex screws and the two Torx T 20 grounding screws holding the board to the instrument body Remove Jumper card Standoff ...

Page 437: ...ottom right slide it slightly to the left and pull it out of the instrument being careful not to catch the board on any wiring harnesses 10 Installation of the new board is the reverse of this procedure Caution Changing the board loses the GC serial number Cutout Hole for transformer Oven Access Cutout Beeper P11 P1 P2 P12 P13 P17 GND P15 DSP Gate Array CPU GND 4 ROM Sockets 3V Lithium battery Gat...

Page 438: ...n INET network to a Chemserver The LAN communications interface card allows the 6890 GC to communicate and transmit data over a LAN to a Chemserver While only one card can be installed at a time the installation procedure is similar for either type of MIO card WARNING Before proceeding turn off the main power switch and unplug the power cord Caution Make sure you are properly grounded with an ESD ...

Page 439: ...ute the oven sensor wires P16 and the main power wire harness J7 underneath the standoff 6 Plug the jumper board from the MIO kit into the P15 socket on the main board Make sure the P7 connector on the jumper card points toward the back of the instrument 7 From the back of the instrument insert the metal bracket into the MIO card slot Hole for transformer Oven Access Cutout Beeper P11 P1 P2 P12 P1...

Page 440: ...rd 6890A and 6890 Plus Figure 430 7 Installing the MIO support bracket and jumper card 8 Screw the bracket onto the standoff using a Torx T 10 screw Do not fully tighten this screw yet 9 From the back of the instrument secure the bracket with three T 20 screws starting with the bottom right screw Insert from rear of instrument ...

Page 441: ...0A and 6890 Plus 10 of 26 Jun 2001 Mainframe Agilent 6890 Gas Chromatograph Service Manual Figure 430 8 Securing the MIO support bracket INET card shown 10 Insert the MIO card into the track on the bracket and secure it with the captive thumb screws on the card ...

Page 442: ... the main board numbered 0 to 3 Only sockets 0 and 1 unshaded are currently used Figure 430 9 Location of the ROM sockets on the main board Removing a ROM Insert the prongs of an AMP IC puller part no 8710 2303 AMP part no 821903 1 in the small slots in the upper left and lower right corners of the socket and pull directly out Hole for transformer Oven Access Cutout Beeper P11 P1 P2 P12 P13 P17 GN...

Page 443: ...rewdriver or a small pair of needle nosed pliers before continuing ROMs are supplied in sets of two The lower part number goes in socket 0 The higher part number ROM goes in socket 1 If the positions are reversed the system will not boot up To insert a ROM align the flattened corner of the chip with the upper right corner of the socket a small dot and the word AMP mark it Check to make sure all th...

Page 444: ...890 GC supplies the power to retain user entries in memory such asprogrammed methods and sequences in the event of a power failure or when the instrument is unplugged The battery is located in the lower left corner of the main board To replace the battery slide the battery down and pull the battery out of the bottom first Figure 430 10 Location of the battery on the main board Hole for Oven Access...

Page 445: ...rap before continuing The electronic pneumatic controller printed circuit board is located on the back of the instrument underneath the inlet and detector pneumatics modules 1 Unclip any inlet detector module connectors from the EPC board 2 Unclip the ribbon cable from the main board and thread it back up through the slot towards the EPC board 3 Unscrew the two Torx T 20 screws on the EPC board br...

Page 446: ... 2 Remove the GC lower back panel Caution Make sure you are properly grounded with an ESD strap before continuing 3 If an MIO card is present remove it and the jumper card 4 Disconnect all cables from the pneumatics PC board 5 Trace the ribbon cable on the end of the board to the main board and disconnect it there Feed the cable up through the PCB bracket to the top 6 Remove the screws holding the...

Page 447: ... Electronics Replacement Replacing the pneumatics board 16 of 26 Jun 2001 Mainframe Agilent 6890 Gas Chromatograph Service Manual 10 Re install the MIO card and the jumper card 11 Re install the lower back panel ...

Page 448: ...nd unplug the power cord Caution Make sure you are properly grounded with an ESD strap before continuing When you are facing the back of the instrument you will see the transformer on the bottom left side 1 Unclip the transformer wiring harness from connector J7 on the main board 2 Unclip the transformer wiring harness from connector J1 on the AC power board 3 Unclip the connector from P9 on the A...

Page 449: ...matograph Service Manual Figure 430 12 Removing the transformer 4 Remove the four No 2 Pozidriv screws from the top corners of the transformer WARNING The transformer is very heavy Make sure you have a firm grip on the transformer before lifting it out of the instrument 5 Lift out the transformer Remove mounting screws four corners ...

Page 450: ...see the transformer on the bottom left side 1 Unclip the transformer wiring harness from connector J7 on the main board 2 6890A and 6890 Plus Unclip the wires from J5 on the ALS Interface PCB if installed 6890N Most 6890N transformers have a single cable going to connector J7 on the main board A few early models have two cables one goes to J7 and the other to an adapter G1530 61590 Conversion Cabl...

Page 451: ...number 10225 20 of 26 Jun 2001 Mainframe Agilent 6890 Gas Chromatograph Service Manual 3 Unclip the transformer wiring harness from connector J1 on the AC power board 4 Unclip the connector from P9 on the AC power board and move the wires out of the way of the transformer ...

Page 452: ...rm grip on the transformer before lifting it out of the instrument 6 Lift out the transformer gaskets and plate Save the gaskets To install a new transformer 1 If you removed the bracket install it over the PEM in the base of the GC The open side of the bracket should face left towards the main board 2 Lay a gasket over the PEM then loosely install the mounting bolt Tighten only a few turns 3 Inst...

Page 453: ...lacing the transformer GC serial number 10225 22 of 26 Jun 2001 Mainframe Agilent 6890 Gas Chromatograph Service Manual 4 Install the remaining gasket onto the transformer then install the plate on the gasket 5 Install the bolt and tighten ...

Page 454: ...0 000 While an ALS Interface Board is installed in the GC the GC can use only the 7683 ALS WARNING Before proceeding turn off the main power switch and unplug the power cord Caution Make sure you are properly grounded with an ESD strap before continuing Follow the procedure below to replace the G2612A ALS Interface board 1 Remove the GC rear panels and the right side cover 2 If an MIO card LAN car...

Page 455: ...h Service Manual 3 Disconnect the 6890 Controller PCB Cable part no G2612 60510 from the ALS Interface board at P5 See Figure 430 16 and Figure 430 17 If you are replacing this cable disconnect it from the main board at J8 Figure 430 16 ALS Interface board connectors Figure 430 17 GC Main board Battery P2 P4 P3 F1 J5 P5 P1 J8 ...

Page 456: ...gure 430 18 To re install the board Caution Attempting to slide the entire board under the locking tab will damage the board s components 1 Hold the board upright and slightly angled as shown in Figure 430 18 2 Place the board onto the mounting bracket 3 Slide it into the bracket until the cutouts in the board are aligned with the locking tabs in the bracket 4 Lay the board against the chassis the...

Page 457: ...430 18 6 Locate the 2 wire cable leading from the transformer and connect it to the ALS Interface board at J5 See Figure 430 18 and Figure 430 16 7 Connect the 6890 Controller PCB Cable part no G2612 60510 to the ALS Interface board at P5 If replacing the cable route the new cable through the cutout in the main board and connect it to J8 See Figure 430 16 and Figure 430 17 8 If an MIO card was rem...

Page 458: ...500 Site Preparation Required environmental conditions for operation of the 6890 instrument 510 Environmental 520 Gases 530 Power 540 Instrument Specifications ...

Page 459: ......

Page 460: ...ide panels and underneath the instrument Warmed air exits through slots in the top rear and side panels Do not obstruct air flow around the instrument Caution For proper cooling and general safety always operate the instrument with cover panels properly installed Venting oven exhaust Hot air up to 450 C from the oven exits through a vent in the rear Allow at least 20 cm 10 inches clearance behind ...

Page 461: ... and sample vents outside the instrument If any sample components are toxic or noxious or if hydrogen is used as the carrier gas the exhaust must be vented to a fume hood Place the GC in the hood or attach a large diameter venting tube to the outlet for proper ventilation To further prevent contamination from noxious gases you can attach a chemical trap part no G1544 60610 to the split vent Bencht...

Page 462: ...of 6 Jun 2001 Site Preparation Agilent 6890 Gas Chromatograph Service Manual Environmental 510 Benchtop space requirements system Allow at least 10 2 cm 4 inches space between instruments for ventilation ...

Page 463: ...tem configurations top view 59 cm 50 cm 50 cm 47 cm 54 cm 44 cm 40 cm 28 cm 23 cm 65 cm 17 cm GC 59 cm 50 cm 10 cm 31 cm GC with Automatic Liquid Sampler GC with ChemStation GC with 5972A Mass Selective Detector 68 cm for non EPC version Tray 30 3 cm left of GC ALS Controller Injector 44 cm above GC Computer Keyboard GC Printer GC 7673 59 cm Mouse pad ...

Page 464: ...nches above GC 18596 or G2614A Tray 31 cm left of GC 9 inches left of GC Computer Computer with monitor 54 cm 21 inche s 42 cm 17 inches 39 cm 15 inches N A N A N A Keyboard 5 cm 2 inches 47 cm 18 inches 18 cm 7 inches N A N A N A 5972A Mass Selective Detector 35 cm 14 inche s 17 cm 7 inches 65 cm 26 inches 254 max 3 158 Btu hr 3 000 with GC 22 7 kg 50 0 lb 7694 Headspace Sampler 31 cm 16 inche s ...

Page 465: ...510 Environmental Benchtop space requirements 6 of 6 Jun 2001 Site Preparation Agilent 6890 Gas Chromatograph Service Manual ...

Page 466: ...y Nitrogen Argon Methane Maximum dynamic range Argon Methane Flame Ionization Nitrogen Maximum sensitivity Hydrogen and air for detector Helium Acceptable alternative Flame Photometric Hydrogen Hydrogen and air for detector Helium Nitrogen Argon Nitrogen Phosphorus Helium Optimum performance Hydrogen and air for detector Nitrogen Acceptable alternative Thermal Conductivity Helium General use Refer...

Page 467: ...r reference gas Electron Capture Hydrogen Argon Methane Nitrogen Anode purge must be same as makeup Helium Argon Methane Nitrogen Nitrogen Nitrogen Argon Methane Argon Methane Argon Methane Nitrogen Flame Ionization Hydrogen Nitrogen Helium Hydrogen and air for detector Helium Nitrogen Helium Nitrogen Nitrogen Helium Flame Photometric Hydrogen Nitrogen Hydrogen and air for detector Helium Nitrogen...

Page 468: ... 520 Gas requirements When using hydrogen with a thermal conductivity detector vent the detector exhaust to a fume hood or a dedicated exhaust to avoid buildup of hydrogen gas Helium is not recommended as a makeup gas at flow rate 5 mL min Flow rates above 5 mL min shorten detector life ...

Page 469: ...vels 0 5 ppm of oxygen and total hydrocarbons should be present Oil pumped air supplies are not recommended because they may contain large amounts of hydrocarbons The addition of high quality moisture and hydrocarbon traps immediately after the main tank pressure regulator is highly recommended Refer to the next section The gas plumbing for more information on using traps Table 520 3 Gas Purity Re...

Page 470: ... cylinders should not be located in the path of heated oven exhaust To avoid possible eye injury wear eye protection when using compressed gas Follow the general plumbing diagram when preparing gas supply plumbing Figure 520 1 General plumbing diagram Two stage regulators are strongly recommended to eliminate pressure surges High quality stainless steel diaphragm type regulators are especially rec...

Page 471: ... detector gases Caution Do not use methylene chloride or other halogenated solvent to clean tubing that will be used with an electron capture detector They will cause elevated baselines and detector noise until they are completely flushed out of the system Gases should be supplied to the instrument only through preconditioned copper tubing part no 5180 4196 Do not use ordinary copper tubing it con...

Page 472: ...gulator you use depends upon gas type and supplier The Chemical Analysis Consumables and Accessories catalog contains information to help you identify the correct regulator as determined by the Compressed Gas Association CGA Agilent Technologies offers pressure regulator kits that contain all the materials needed to install regulators properly Pressure regulator gas supply tubing connections The p...

Page 473: ...cular sieve trap and before an oxygen trap if they are present An oxygen trap removes 99 of the oxygen from a gas plus traces of water It should be last in a series of traps Because trace amounts of oxygen can damage columns and degrade ECD performance use an oxygen trap with carrier and ECD gases Do not use it with FID FPD or NPD fuel gases Figure 520 3 Traps Description Part No Preconditioned mo...

Page 474: ...part no G1566 65517 Choosing a coolant When selecting a coolant consider these points The lowest temperature you need to reach How frequently you will use cryogenic cooling The availability and price of coolant The size of the tanks in relation to the size of the laboratory Liquid N2 cools reliably to 80 C Liquid CO2 cools reliably to 40 C CO2 is the choice for infrequent cryogenic cooling because...

Page 475: ...ressure tanks containing 50 pounds of liquid The CO2 should be free of particulate material oil and other contaminants These contaminants could clog the expansion orifice or affect the proper operation of the GC Additional requirements for the liquid CO2 system include The tank must have an internal dip tube or eductor tube to deliver liquid CO2 instead of gas see Figure 520 4 The liquid CO2 must ...

Page 476: ...s 520 Cryogenic cooling requirements Figure 520 4 Correct and incorrect liquid CO2 tank configuration WARNING Do not use copper tubing or thin wall stainless steel tubing with liquid CO2 Both harden at stress points and may explode Correct configuration Incorrect configuration Dip tube ...

Page 477: ...f valve is set by the supplier at 20 to 25 psi WARNING If liquid nitrogen is trapped between a closed tank valve and the cryo valve on the GC tremendous pressure will develop and may cause an explosion For this reason keep the delivery valve on the tank open so that the entire system is protected by the pressure relief valve To move or replace a tank close the delivery valve and carefully disconne...

Page 478: ...air must be free of oil moisture and particulates It can be supplied from a dried regulated cylinder although house air supplies or air from a compressor are acceptable Most valves require 20 to 40 psi of pressure to operate High pressure valves may require 65 to 70 psi Valves require a dedicated air supply Do not share valve air supplies with detectors See Valve Control in the Agilent 6890 GC Ope...

Page 479: ...520 Gases Supplying valve actuator air 14 of 14 Jun 2001 Site Preparation Agilent 6890 Gas Chromatograph Service Manual ...

Page 480: ...acle is one that is connected to a suitable earth ground Proper receptacle grounding should be verified Make sure the GC is connected to a dedicated receptacle Use of a dedicator receptacle reduces interference Caution Any interruption of the grounding conductor or disconnection of the power cord could cause a shock that could result in personal injury Line voltage The GC operates from one of the ...

Page 481: ...stallation contact Agilent Technologies USA fast heating oven The fast heating oven requires 240 V 15A power Do not use 208 V power Lower voltage causes slow oven ramps and prevents proper temperature control The power cord supplied with your GC is rated for 250 V 15A and is a two pole three wire cord with grounding type L6 15R L6 15P Voltage Maximum power consumption VA Power line requirement Ove...

Page 482: ...ndwill beequipped with a slow heatingovenunlesstheyareordered with power option 002 which equips the GC with a fast heating oven Canadian installation When installing a GC in Canada make sure your GC s power supply circuit meets the following additional requirements The circuit breaker for the branch circuit which is dedicated to the instrument must be rated for continuous operation The service bo...

Page 483: ...nation Voltage Oven type Australia 10 amp 240 V Regular Australia 15 amp 240 V Fast China 10 amp 220 V Regular China 16 amp 220 V Fast Continental Europe 220 V Fast Continental Europe 230 V Fast Denmark 10 amp 230 V Regular Denmark and Switzerland 16 amp 230 V Fast Switzerland 10 amp 230 V Regular Hong Kong 220 V Fast India South Africa 240 V Fast Israel 230 V Fast Japan 200 V Fast ...

Page 484: ...5 of 6 Jun 2001 Site Preparation Agilent 6890 Gas Chromatograph Service Manual Power 530 Grounding United Kingdom 240 V Fast USA 120 V Regular USA 240 V Fast ...

Page 485: ...530 Power Grounding 6 of 6 Jun 2001 Site Preparation Agilent 6890 Gas Chromatograph Service Manual ...

Page 486: ...manual inlets Depth 54 cm 22 inches Average weight 49 kg 108 lbs Laboratory environmental conditions Storage extremes 40 C 65 C Recommended ambient temperature 15 to 35 C Recommended ambient humidity 5 to 95 Safety certifications CSA certified and NRTL listed IEC self certified Data communications GPIB RS 232 C and two analog output channels 1 mV 1 V and 10 V output available as standard INET inte...

Page 487: ...ol down rates see Figure 540 2 Rates are greater when using the optional oven exhaust deflector or cryogenic cooling Maximum run time 999 99 min Programming ramps plateaus 6 7 Ambient rejection 0 01 C per 1 C Column bleed compensation standard for two channels 500 450 400 350 300 250 200 150 50 0 100 0 100 200 300 400 500 600 700 800 240 Volts 120 Volts 500 450 400 350 300 250 200 150 50 0 100 0 1...

Page 488: ...litless electronic or manual pressure flow 400 C max electronic entry of pressure or flow and split ratio with electronic version Temperature programmable cool on column electronic pressure flow 450 C max Programmable temperature vaporizer 450 C max Volatiles interface 400 C max For electronic inlets Pressure setting range 0 to 100 psi Total flow setting range split splitless 0 to 200 mL min nitro...

Page 489: ...ectron capture detector ECD Micro cell electron capture detector µ ECD Nitrogen phosphorus detector NPD for packed or capillary columns Nitrogen phosphorus detector NPD optimized for capillary columns Flame photometric detector FPD single or dual wavelength Atomic emission detector AED Mass selective detector MSD FID 450 C maximum operating temperature Automatic flame ignition from the keypad or C...

Page 490: ...ell MDL 400 pg propane mL helium carrier MDL may be affected by laboratory environment Linear dynamic range 105 5 ECD Equipped with anode purge for contamination resistance 400 C maximum operating temperature Makeup gas types argon 5 methane nitrogen Radioactive source 15 mCi 63 Ni plated MDL 0 04 pg s lindane Dynamic range 104 with lindane µ ECD Radioactive source 15 mCi 63 Ni plated FPD Range 10...

Page 491: ...540 Instrument Specifications Detectors 6 of 6 Jun 2001 Site Preparation Agilent 6890 Gas Chromatograph Service Manual ...

Page 492: ...600 Performance Verification How to check the performance of the 6890 instrument 610 Checkout Chromatograms ...

Page 493: ......

Page 494: ...so include an additional 0 4 to 0 7 mL the volume of sample volatilized from inside the syringe needle For the dedicated on column inlet unheated the syringe plunger position more accurately reflects the true injected volume Also note that the following procedures and results are intended only to provide evidence of a properly functioning inlet and or detector system they are not necessarily suita...

Page 495: ...Splitless Oven Track Cool On Column Inlet pressure 25 psi Constant pressure for EPC inlets helium Split Splitless Only Mode Splitless Purge flow 60 mL min Purge time 0 75 min PTV Splitless Mode Inlet temperature 40 C Initial time 0 1 min Rate 1 720 C min Final temp 1 350 C Final time 1 2 min Rate 2 100 C min Final temp 2 250 C Final time 2 0 min Inlet pressure 25 psi const press for EPC inlets Mod...

Page 496: ...nt 6890 Gas Chromatograph Service Manual Checkout Chromatograms 610 FID checkout conditions and chromatogram Oven Initial temp 40 C Initial time 0 min Rate 1 25 C min Final temp 90 C Final time 0 min Rate 2 15 C min Final temp 170 C Final time 2 min ...

Page 497: ...kout Chromatograms FID checkout conditions and chromatogram 4 of 26 Jun 2001 Performance Verification Agilent 6890 Gas Chromatograph Service Manual Figure 610 1 FID checkout chromatogram 1 067 6 041 6 907 7 766 ...

Page 498: ... area ratio 1 00 0 05 1 00 0 10 3396B or 3396C or 3397A integrator sample conditions with INET input 6890 INET output Range 8 3396 Range 5 Set DATE and TIME Zero 10 Pk wd 0 04 Att 2 4 Thresh 3 Cht sp 1 Stop time 8 75 SS COC PTV PPIP Sensitivity C14 C15 C16 area counts 1 250 000 1 250 000 Discrimination C14 C16 area ratio 1 00 0 05 1 00 0 10 Agilent ChemStation SS COC PTV PPIP Sensitivity C14 C15 C...

Page 499: ... Inlet Temperature 200 C Purged Packed or Split Splitless Oven TrackCool On Column 60 C PTV see below Inlet pressure 25 psi Constant pressure for EPC inlets helium Split Splitless Only Mode Splitless Purge flow 60 mL min Purge time 0 75 min PTV Splitless Mode Inlet temperature 60 C Initial time 0 1 min Rate 1 720 C min Final temp 1 350 C Final time 1 2 min Rate 2 100 C min Final temp 2 250 C Final...

Page 500: ... 10 mL min nitrogen Offset 50 pA Oven Initial temp 60 C Initial time 0 min Rate 1 20 C min Final temp 200 C Final time 3 min Note 6890 firmware A 03 03 or greater is recommended for slower bead activation Usually an NP bead offset of 30 pA is sufficient Higher offsets reduce bead life Note Alwayscool thedetectorbelow 150 C before changinga bead The offset with the bead off but at temperature and a...

Page 501: ...heckout Chromatograms NPD checkout conditions and chromatogram 8 of 26 Jun 2001 Performance Verification Agilent 6890 Gas Chromatograph Service Manual Figure 610 2 NPD checkout chromatogram 5 966 6 969 8 017 ...

Page 502: ...Azobenzene area counts 306 000 Malathion area counts 575 000 3396B or 3396C or 3397A integrator sample conditions with INET input 6890 INET output Range 0 Set DATE and TIME Zero 10 Pk wd 0 04 Att 2 7 Thresh 7 Cht sp 1 Stop time 12 0 Ar Rej 1000 SS COC PTV PPIP Sensitivity Azobenzene area counts 12 000 Malathion area counts 22 500 Agilent ChemStation SS COC PTV PPIP Sensitivity Azobenzene area coun...

Page 503: ... Oven Track Cool On Column 40 C PTV see below Inlet pressure 25 psi Constant pressure for EPC inlets helium Split Splitless Only Mode Splitless Purge flow 60 mL min Purge time 0 75 min PTV Splitless Mode Inlet temperature 40 C Initial time 0 1 min Rate 1 720 C min Final temp 1 350 C Final time 1 2 min Rate 2 100 C min Final temp 2 250 C Final time 2 0 min Inlet pressure 25 psi const press for EPC ...

Page 504: ...nt 6890 Gas Chromatograph Service Manual Checkout Chromatograms 610 TCD checkout conditions and chromatogram Oven Initial temp 40 C Initial time 0 min Rate 1 25 C min Final temp 90 C Final time 0 min Rate 2 15 C min Final temp 170 C Final time 2 min ...

Page 505: ...out Chromatograms TCD checkout conditions and chromatogram 12 of 26 Jun 2001 Performance Verification Agilent 6890 Gas Chromatograph Service Manual Figure 610 3 TCD checkout chromatogram 7 619 6 779 5 920 1 008 ...

Page 506: ... 10 1 00 0 10 3396B or 3396C or 3397A integrator sample conditions with INET input 6890 INET output Range 0 Set DATE and TIME Zero 10 Pk wd 0 04 Att 2 7 Thresh 5 Cht sp 1 Stop time 8 75 Ar Rej 100 SS COC PTV PPIP Sensitivity C14 C15 C16 area counts 23 000 20 130 Discrimination C14 C16 area ratio 1 00 0 10 1 00 0 10 Agilent ChemStation SS COC PTV PPIP Sensitivity C14 C15 C16 area counts 73 65 Discr...

Page 507: ...tless Oven TrackCool On Column 80 C PTV see below Inlet pressure 25 psi Constant pressure for EPC inlets helium Split Splitless Only Mode Splitless Purge flow 60 mL min Purge time 0 75 min PTV Splitless Mode Inlet temperature 80 C Initial time 0 1 min Rate 1 720 C min Final temp 1 350 C Final time 1 2 min Rate 2 100 C min Final temp 2 250 C Final time 2 0 min Inlet pressure 25 psi const press for ...

Page 508: ...tion Agilent 6890 Gas Chromatograph Service Manual Checkout Chromatograms 610 ECD checkout conditions and chromatogram Oven Initial temp 80 C Initial time 0 min Rate 1 15 C min Final temp 180 C Final time 10 min Note 1 display count 5 Hertz ...

Page 509: ...ut Chromatograms ECD checkout conditions and chromatogram 16 of 26 Jun 2001 Performance Verification Agilent 6890 Gas Chromatograph Service Manual Figure 610 4 ECD checkout chromatogram 9 487 Aldrin 6 548 Lindane ...

Page 510: ... min measurement Signal Zero 10 Pk wd 0 04 Att 2 7 Thresh 7 Cht sp 1 Stop time 11 0 Ar Rej Area Lindane peak 84150 N1 3396B or 3396C or 3397A integrator sample conditions with INET input 6890 INET output Range 0 Set DATE and TIME Noise N2 Measured at Attn 5 Chart speed 1 N2 11 25 mm for 1 min measurement Signal Zero 10 Pk wd 0 04 Att 2 7 Thresh 7 Cht sp 1 Stop time 12 0 Ar Rej Area Lindane peak 26...

Page 511: ... Packed 250 C Split Splitless Oven TrackCool On Column 80 C PTV see below Inlet pressure 25 psi Constant pressure for EPC inlets helium Split Splitless Only Mode Splitless Purge flow 60 mL min Purge time 0 75 min PTV Splitless Mode Inlet temperature 80 C Initial time 0 1 min Rate 1 720 C min Final temp 1 350 C Final time 1 2 min Rate 2 100 C min Final temp 2 250 C Final time 2 0 min Inlet pressure...

Page 512: ...Agilent 6890 Gas Chromatograph Service Manual Checkout Chromatograms 610 Microcell ECD checkout conditions and chromatogram Oven Initial temp 80 C Initial time 0 min Rate 1 15 C min Final temp 180 C Final time 10 min Note 1 display unit 1 Hertz ...

Page 513: ...ditions and chromatogram 20 of 26 Jun 2001 Performance Verification Agilent 6890 Gas Chromatograph Service Manual Figure 610 5 µECD checkout chromatogram min 0 2 4 6 8 10 arbs 50 100 150 200 250 300 IQ1 A of SOP11A10 011F0201 D 6 548 9 487 Lindane Aldrin ...

Page 514: ...ample conditions with analog input 6890 Analog output Range 0 Set DATE and TIME 6890 Analog output Noise N1 Measured at 6890 Range 0 3396 Attn 3 Chart speed 1 zero 50 37 mm for 1 min measurement Signal 6890 Range 6 3396 Zero 10 Pk wd 0 04 Att 2 5 Thresh 5 Cht sp 1 Stop time 11 0 Ar Rej 100000 Area Lindane peak 47 950 N1 Agilent ChemStation Noise N3 Measured by ChemStation ASTM N3 3 Hz Signal Area ...

Page 515: ... 1 µL Inlet Temperature 250 C Purged Packed 250 C Split Splitless Oven TrackCool On Column 80 C PTV see below Inlet pressure 25 psi Constant pressure for EPC inlets helium Split Splitless Only Mode Splitless Purge flow 60 mL min Purge time 0 75 min PTV Splitless Mode Inlet temperature 80 C Initial time 0 1 min Rate 1 720 C min Final temp 1 350 C Final time 1 2 min Rate 2 100 C min Final temp 2 250...

Page 516: ...togram Detector Temperature 200 C Hydrogen flow 75 2 mL min Air flow 100 2 mL min Const Makeup Flow N2 60 2 mL min Offset flow off O fa Should be 40 display units Offset flame on O fb O fa 85 display units Oven Initial temp 60 C Initial time 0 min Rate 1 25 C min Final temp 110 C Final time 0 min Rate 2 10 C min Final temp 2 170 C Final time 1 3 min ...

Page 517: ...eckout conditions and chromatogram 24 of 26 Jun 2001 Performance Verification Agilent 6890 Gas Chromatograph Service Manual Figure 610 6 FPD checkout chromatogram sulfur channel Figure 610 7 FPD checkout chromatogram phosphorus channel ...

Page 518: ...og input 6890 Analog output Range 5 Set DATE and TIME 6890 Analog output Noise N1 Measured at 6890 Range 5 Attn 0 Chart speed 1 zero 50 30 mm for 1 min measurement Signal 6890 Range 5 3396 Zero 10 Pk wd 0 04 Att 2 9 Thresh 3 Cht sp 1 Stop time 11 0 Ar Rej 100000 Area Sulfur mode 7 000 000 Agilent ChemStation 6890 GPIB output Noise N3 Measured by ChemStation ASTM N3 5 display units 150 pA display u...

Page 519: ...610 Checkout Chromatograms FPD checkout conditions and chromatogram 26 of 26 Jun 2001 Performance Verification Agilent 6890 Gas Chromatograph Service Manual ...

Page 520: ...700 Preventive Maintenance Procedures to prolong the life of the 6890 instrument Preventive Maintenance information was not available for this printing ...

Page 521: ......

Page 522: ...ernal Diagnostics How to use error messages to diagnose and correct internal problems with the 6890 instrument 810 Overview 820 Not Ready Messages 830 Warning Codes 840 Shutdowns 850 Faults 860 Bad Mainboard and Fatal Errors ...

Page 523: ......

Page 524: ... When the 6890 GC is in a not ready state the Not Ready LED lights up but a message does not appear on the display You can press the STATUS button to view a message that explains why the 6890 GC is not ready to begin the run Not ready messages are recorded in the run log Method mismatch Method Mismatch occurs when you load a method containing parameters that do not match the 6890 GC current config...

Page 525: ... state No additional information appears under the STATUS key and the error is not recorded in the run log Faults A Fault message indicates a hardware problem that requires user intervention Depending on the type of error the GC will emit no beep or a single beep The Not Ready LED will light because the GC will not be able to begin the run and an error message will appear Press the STATUS button f...

Page 526: ...nto these categories Oven temperature not ready Temperature zones not ready Pressure or flow not ready Detector not ready GC in diagnostic mode Inlet purging Valves not ready External devices not ready Power failure Oven temperature not ready Status message Oven temp The GC will becomes ready to begin a run when the oven temperature remains within 1 C of the setpoint for the equilibration time The...

Page 527: ...e GC is ready to start a run when all the zones are within 1 C of the setpoint and have maintained the setpoint temperature for 30 seconds A zone that is turned off is considered ready If a temperature zone is unable to reach the setpoint the GC will remain not ready indefinitely The instrument will not shut down unless a temperature is out of the range for the zone Temperature Zone Not Ready stat...

Page 528: ...sidered ready If the zone does not become ready within a specified time the GC goes into the shutdown mode See Section 840 Shutdowns for more information Table 820 1 Pressure and or Flow Not Ready Messages Status message Comments Front Back inlet pressure Pressure not at setpoint Front Back inlet flow Flow not at setpoint Front Back det air flow For FID NPD or FPD Gas supply turned off manual or n...

Page 529: ...ures must be at least 150 C before they can ignite The NPD must be at least 150 C before the bead voltage is applied The TCD must be at 100 C to turn on the filament because at lower temperatures the filament sags If the temperatures are below the minimum the GC will not be ready Usually the detector will reach the setpoint temperature and become ready However if the detector is unable to reach a ...

Page 530: ...ually complete in 30 seconds The NPD may take longer It is possible that the NPD will be unable to reach the setpoint if there is contamination in the system for example if the gas is not pure enough or the bead is damp or if the bead is worn out If the NPD cannot reach the setpoint you will not receive an error message the GC will simply not become ready Turn the detector off to clear the message...

Page 531: ...n or Back det shutdown The detectors will shut down if they experience a pneumatics failure or if the TCD experiences a filament failure The GC will not be ready until the detector with the failure is turned off Turning off the FID or FPD turns off the igniter hydrogen flow and air flow Turning off the NPD turns off bead voltage hydrogen flow and air flow Turning off the TCD turns off filament vol...

Page 532: ...is incorrect for the valve s BCD output polarity The valve will most likely shutdown with Illegal Position or Not Switching shutdown errors If the valve is plugged or the sample is viscous the switching time may not allow adequate time for the valve to switch Increase the switching time 24 volt valve drive Status message 24 V pneu valve drive This Not Ready state indicates that the 24 V supply to ...

Page 533: ... a split splitless inlet The message appears if you try to start a run while the inlet purge valve is still in the split mode The inlet will remain not ready and continue purging until you press the Prep Run key Pressing Prep Run closes the valve it also turns off the gas saver mode and increases pressure for a pressure pulse if selected Host system not ready Status message Host system The GC will...

Page 534: ... or while the oven was turned on while the GC was not performing a run Turned on again after a user turned it off The GC will heat all the other thermal zones and then heat the oven When the oven temperature stays at the setpoint for the equilibration time the GC will become ready If the power failure occurred during a run upon power restoration the GC will heat all the thermal zones and oven and ...

Page 535: ...820 Not Ready Messages Miscellaneous messages 10 of 10 Jun 2001 Error Codes and Internal Diagnostics Agilent 6890 Gas Chromatograph Service Manual ...

Page 536: ...issing Status message Oven sensor missing The oven sensor is not being detected because it is unconnected or is malfunctioning The oven will be shut off and the GC will be not ready Connect or replace the oven sensor Warning 101 Invalid heater power for front detector inlet and aux 1 Warning 102 Invalid heater power for back detector inlet and aux 2 Status message Invalid heater power The total wa...

Page 537: ...al network that links the GC to the PC Check the PC cabling and network The PC was turned off without closing the ChemStation instrument session The GC collects and stores real time plot data until the buffer overflows and the warning appears Next time close the instrument session before turning off the PC so that the GC stops collecting data The PC entered power savermode When thePC enterspowersa...

Page 538: ...ach other correctly Both analog and digital data will be lost Although the problem could be caused by a bad power supply or a radio frequency interference both are improbable The most likely cause is a malfunction on the main PC board Warning 107 Front det config changed method defaulted Warning 108 Back det config changed method defaulted Status message F det config changed or B det config change...

Page 539: ...will occur If a new inlet or sensor was installed the 6890 GC will enter the default setpoints for the new type of inlet If a method was loaded with a different inlet specified the 6890 GC will not change the method but will flash the warning message Warning 111 Column 1 config changed method defaulted Warning 112 Column 2 config changed method defaulted Status message Col 1 config changed or Col ...

Page 540: ... length diameter or something else has changed Default setpoints for the aux module will be loaded Warning 116 Run log full Status message None The run log can hold 50 lines of information When it reaches the maximum no more information can be stored in the log and this warning will appear Remove some information from the run log Warning 117 F inl calib deleted Warning 118 B inl calib deleted Stat...

Page 541: ...nd the 6890 GC crashedorencounteredapowerfailurebefore therecalibration wascomplete this warning will appear when the instrument is turned on again The calibration for the module will return to the default Warning 122 Host communication data overrun Status message Comm data overrun The 6890 GC received data from a computer or workstation faster than it could process it The data may be lost Lower t...

Page 542: ... or workstation Warning 125 Sampler communications data overrun Status message Sampler data overrun The 6890 GC received information from the 7673 ALS quicker than it could process it The data may be lost Verify that the sampler settings are adjusted correctly Warning 126 Sampler communications data error Status message Sampler data error The 6890 GC received bad information from the 7673 ALS For ...

Page 543: ...ve Status message Aux 1 cryo disabled or Aux 2 cryo disabled The same cryo valve is specified for and inlet and an auxiliary zone The aux cryo is declared not installed Check the hardware to see where the valve is really installed Fix the configuration accordingly Warning 132 Col 1 Init time changed Warning 133 Col 2 Init time changed Status message None While using a Volatiles Interface inlet the...

Page 544: ...r inlet mismatch The injector is not compatible with the inlet it is intended to use Warning 140 Front inlet Saver time changed Warning 141 Back inlet Saver time changed While using a Volatiles Interface inlet the Sample End time is set less than the inlet purge time The purge time has been changed to the Sample End time 1 to avoid the conflict Warning 142 Front inlet Purge time changed Warning 14...

Page 545: ...830 Warning Codes Warning 144 OEM Config error s 10 of 10 Jun 2001 Error Codes and Internal Diagnostics Agilent 6890 Gas Chromatograph Service Manual ...

Page 546: ... that temperature This error puts the 6890 GC in a not ready state The oven flaps open half way if they are operating correctly You must turn the 6890 GC off and then on again or change the oven temperature to restore operation The following may be causing the error Check the oven flap on the back of the 6890 GC The oven flap should be open when cooling for temperatures ranging between 50 and 250 ...

Page 547: ...point but theamount of timeyouspecifiedfor the cryotimeout setpoint haselapsed without a run beginning Turn the oven off and then on again or change the setpoint to restore normal operation Then turn thetimeout option off toprevent theshutoff from reoccurring or lengthen the timeout period A cryo fault has occurred Cryogenic cooling has been on for over 16 minutes but the oven has not reached its ...

Page 548: ...w to reach the setpoint Make sure that the initial gas supplies are high enough to support the pressure and flow setpoints The pressure at the initial supply should be at least 5 psi 10 psi for the split splitless inlet greater than the desired setpoint A large leak is present somewhere in the system Use an electronic leak detector to find leaks correct them Refer to chapter 200 for the leak test ...

Page 549: ... valve is stuck closed because of contamination or another fault Shutdown 4 Front inlet flow shutdown This message indicates the front inlet failed to reach its flow setpoint in the allotted time or cannot maintain its flow setpoint When you are operating in flow control mode the inlet has 2 minutes to reach the setpoint before shutdown The instrument will be not ready until the problem is correct...

Page 550: ...to find leaks correct them In addition to checking the gas supply connections and the inlet remember that the column could be broken which would cause a large leak It is unlikely that the detector itself is the source of the leak The detector s proportional control valve is stuck open or closed because of contamination or other fault Shutdown 8 Front detector air ref shutdown The front detector s ...

Page 551: ...wn Shutdown 14 Pres aux 4 shutdown Shutdown 15 Pres aux 5 shutdown The specified pneumatics aux module cannot maintain the pressure setpoint All the detector gases shut off and the instrument goes not ready See Shutdown 3 Front inlet pressure shutdown for a list of possible causes and solutions Shutdown 16 Multiposition valve not switching This message appears when the multiposition valve has trie...

Page 552: ...Agilent 6890 Gas Chromatograph Service Manual Shutdowns 840 Shutdown 16 Multiposition valve not switching The valve could be switching more slowly than usual because it is sticking slightly or the sample is viscous Increase the length of the switching time ...

Page 553: ...s unable to reach For example position ten was entered for an eight port valve Enter a correct valve position setpoint The Invert BCD setpoint is incorrect With most valves the invert should be On If the BCD setpoint is already On and you experience a shutdown set it to Off Shutdown 18 Front inlet cryo shutdown Shutdown 19 Back inlet cryo shutdown Either a cryo timeout zone has been waiting at set...

Page 554: ...ff Shutdown 23 Back inlet heating too slowly temperature shut off The inlet has been heating longer than the allowable time without reaching the setpoint The zone isshut down andtheactual temperaturedisplayflashes OFF To rest cycle the zone power or change the setpoint This could be a bad thermal sensor where the reading is incorrect but the value is within the valid temperature range A failed or ...

Page 555: ...840 Shutdowns 10 of 10 Jun 2001 Error Codes and Internal Diagnostics Agilent 6890 Gas Chromatograph Service Manual ...

Page 556: ...trol board will need to be replaced Fault 202 Hydrogen safety shutdown Status message Hydrogen shutdown An inlet configured for hydrogen gas did not reach the pressure setpoint within 2 minutes Because hydrogen presents an explosion hazard the following occurred The GC oven fan and heaters are turned off The oven flaps are fully opened Both pressure and flow controls are turned off and the control...

Page 557: ...ed portion An inlet proportional control valve may be stuck open or closed because of contamination or other fault Contact your Agilent Technologies service representative Fault 203 Signal DSP faulty Status message Signal DSP faulty The detector s signal processing electronics are not functioning correctly This indicates a malfunction with the 6890 GC main PC board The signal path will not functio...

Page 558: ...must be replaced Fault 206 Signal DSP registers Status message Sig DSP registers The detector s signal processing electronics are not functioning correctly This indicates a malfunction with the 6890 GC main PC board The signal path will not function Turn the instrument on and then off at least one time If the error still occurs the mainboard must be replaced Fault 207 Sig DSP data corrupt Status m...

Page 559: ...errorindicates that thesignal that the 6890GC is sending to anintegrator in position 1 or 2 is not within the acceptable range The 6890 GC will not be ready Turn the instrument on and then off at least one time If the error still occurs the mainboard must be replaced Fault 212 Front detector electrometer out of specification Fault 213 Back detector electrometer out of specification Status message ...

Page 560: ...process or the run the detector will try to ignite the flame twice if both attempts fail the hydrogen air and ignitor will shut off and the error message will appear The detector will be in a not ready state Check the following Make sure the hydrogen and air are turned on and that the flow rates are high enough for the flame to ignite Use an electronic leak detector to search for and correct leaks...

Page 561: ...otentially shortedfilament Thiscondition could be caused by a worn or sagging filament or if the wires from the TCD are not connected properly to the detector board or are touching each other or if the wires from the PRT are not properly connected to the detector board Units made before April 1997 may not use a PRT The detector will not be ready until the condition is corrected Check that the fila...

Page 562: ...nostics Agilent 6890 Gas Chromatograph Service Manual Faults 850 Fault 220 Heater over current Thermal shutdown The fault could be caused by a malfunction in the heater sensor or the heater electronics See Fault 221 Thermal shutdown status message ...

Page 563: ...omponents can experience a thermal shutdown the oven the inlets the detectors and the aux zones In addition problems with electronics on the main PC board can cause a thermal shutdown If you see any thermal shutdown message first turn the GC off and on If the error was caused by a power supply problem the error will disappear and the instrument will become ready If the error reappears the main boa...

Page 564: ...lt 224 Oven thermal shutdown Status message Oven temp sensor The oven temperature reading reports the oven s temperature is lower than expected which indicates a shorted oven sensor Power will be turned off for all the heated zones The sensor must be replaced See Fault 221 Thermal shutdown status message Fault 225 Front detector thermal shutdown Status message F det temp too hot The front detector...

Page 565: ...ure detector type maximum temperature plus an additional 25 C This indicates a defective heater drive on the mainboard or a defective sensor Power is disabled to the small zones and the oven This fault can only be cleared by turning off all the heated zones and turning the instrument off and on again The problem could be caused by a defective sensor or defective heater driver on the mainboard See ...

Page 566: ...ront inlet thermal shutdown Status message F inl temp sensor The front inlet temperature reading reports the inlet s temperature is lower than expected which indicates a shorted sensor Power will be turned off for inlet The sensor must be replaced See Fault 221 Thermal shutdown status message Fault 231 Back inlet thermal shutdown Status message B inl temp too hot The back inlet s temperature is hi...

Page 567: ...maximum allowable temperature detector type maximum temperature plus an additional 25 C This indicates a defective heater drive on the mainboard or a defective sensor Power is disabled to the small zones and the oven This fault can only be cleared by turning off all the heated zones and turning the instrument off and on again The problem could be caused by a defective sensor or defective heater dr...

Page 568: ...ment off and on again The problem could be caused by a defective sensor or defective heater driver on the mainboard See Fault 221 Thermal shutdown status message Fault 236 Aux 2 thermal shutdown Status message Aux 2 temp sensor Aux zone 2 s temperature reading reports that its temperature is lower than expected which indicates a shorted sensor Power will be turned off for the zone The sensor must ...

Page 569: ...e Fault 221 Thermal shutdown status message Fault 239 Mux ADC thermal shutdown Status message No mux ADC response The multiplexor which processes the 6890 GC electronic signals is not functioning Most likely the multiplexor s circuitry is defective Power will be shut off to the oven and other heated zones The 6890 GC will not be ready The main board must be replaced See Fault 221 Thermal shutdown ...

Page 570: ...ule invalid constants Fault 244 Pneu aux module invalid constants Status message Aux 3 faulty fact cal or Aux 4 faulty fact cal or Aux 5 faulty fact cal Two conditions could cause this error The module installed in the aux position is not an aux module The aux module is not working correctly for example the EEPROM could be an unsupported version Module will not be usable Remove the module from the...

Page 571: ...obsolete EEPROM Status message Aux module rev The aux pressure s EEPROM is not recognized by the 6890 GC The module is unusable The version of the module is not compatible with the version of the 6890 GC Fault 250 Front det non det module Fault 251 Back det non det module Status message F det wrong module or B det wrong module The module installed in an inlet slot is unusable Two things could caus...

Page 572: ...PROM may be unrecognized by the 6890 GC Make sure that the correct type of module is installed Fault 254 Non aux module in pneu aux position Status message Aux wrong module The module installed in aux slot is unusable Two things could cause this condition The module is installed in the wrong position For example an inlet module might be installed in the aux position If thecorrect moduleisinstalled...

Page 573: ... module does not match the installed detector electronics board The position of the detector pneumatics module and detectors were changed but the detector board was not Change the detector boards Fault 261 Host communications MIO board defective Status message MIO board defective The connection between the MIO PC board and the mainboard could be faulty or the MIO board is defective Communication b...

Page 574: ...ween the GC and the other device will halt Fault 265 Front inlet invalid pids Fault 266 Back inlet invalid pids Status message F inlet invalid pid or B inlet invalid pid pid is an abbreviation for the constants used in the algorithm that controls temperature This fault means that the module calibration is no longer valid Fault 267 Front detector invalid pids Fault 268 Back detector invalid pids St...

Page 575: ... message F det bad cksum or B det bad cksum The detector module s calibration is no longer valid Fault 274 Pneu aux module invalid module checksum Status message Pneu aux bad cksum The aux pneumatics module s calibration is no longer valid Fault 275 Front inlet invalid constants from factory Fault 276 Back inlet invalid constants from factory Status message F inlet bad fact cal or B inlet bad fact...

Page 576: ...unusable Fault 283 B det read write failure Module is unusable Status message F det i o failure or B det i o failure The EPC module is malfunctioning Replace the module Fault 284 Pneu aux read write failure Module is unusable Status message Pneu aux i o failure The EPC module is malfunctioning Replace the module Fault 285 Front detector offset adjustment failed Fault 286 Back detector offset adjus...

Page 577: ...850 Faults Fault 288 B OIM not installed 22 of 22 Jun 2001 Error Codes and Internal Diagnostics Agilent 6890 Gas Chromatograph Service Manual ...

Page 578: ...MAINBOARD Main FPGA Failure Replace mainboard Static RAM Failure Replace mainboard Boot ROM Checksum Replace mainboard ROM 2 Checksum Replace EEPROM 2 ROM 3 Checksum Replace EEPROM 3 Incorrect ROM 2 EEPROM 2 or 3 is installed in the wrong position Change the position the EEPROM is installed in Incorrect ROM 3 ROM 2 wrong version The version of either EEPROM 2 or 3 is different than that of the oth...

Page 579: ...860 Bad Mainboard and Fatal Errors 2 of 2 Jun 2001 Error Codes and Internal Diagnostics Agilent 6890 Gas Chromatograph Service Manual ...

Page 580: ...900 Remote Access Remote Access information was not available for this printing ...

Page 581: ......

Page 582: ...iguration and Electronics Connecting the6890 gaschromatograph with other analytical instruments and pinouts for the cable used 1010 Cabling Diagrams 6890A and 6890 Plus 1015 Cabling Diagrams 6890N 1020 Cable Electronics ...

Page 583: ......

Page 584: ...g RS 232 for modem or non Agilent External event for communication with BCD input for stream selection valves General Purpose Interface Bus GPIB for ChemStation INET card for 3396B C integrators LAN card for a networked Chemserver Power and communication for front G2613A Injector Power and communication for back G2613A Injector Power and communication for to digital A D converters and some non Agi...

Page 585: ...tomatic Liquid Sampler Figure 1010 2 Number Part no and description 1 G1530 60600 RS 232 cable 9 pin female 9 pin female 2 G1530 60930 2 m APG remote cable 9 pin male 9 pin male 3 8120 3446 2 m GPIB cable 4 24542M also 24540 80012 RS 232 cable 6890 GC GC ChemStation ALS Modem 1 RS 232 2 APG remote 4 RS 232 3 GPIB The 7683 ALS controller is internal to the 6890 Plus GC The G2613A injector and G2614...

Page 586: ...ion GC Automatic Liquid Sampler Figure 1010 3 Number Part no and description 1 G1530 60930 2 m APG remote cable 9 pin male 9 pin male 2 8120 3446 2 m GPIB cable 3 G1530 60600 2 m RS 232 cable 9 pin female 9 pin female 4 G1530 60930 2 m APG remote cable 9 pin male 9 pin male 6890 GC GC ChemStation MSD ALS 1 APG remote 3 RS 232 4 APG remote 2 GPIB 2 GPIB The 7683 ALS controller is internal to the 68...

Page 587: ...n spade lugs 5 G1530 60630 General purpose BCD cable 35900 60670 APG remote cable spade lug identification G1530 60590 External event cable spade lug identification Connect 1 9 pin male Signal name Connector 2 spade lugs Pin Color Signal 1 GND Black 1 Yellow 24 V Out 1 2 Prepare White 2 Black 24 V Out 2 3 Start Red 3 Red Ground 4 Shut down Green 4 White Ground 5 Reserved Brown 5 Orange Contact 1 6...

Page 588: ...e 1010 5 Number Part no and description 1 G1530 60600 2 m RS 232 cable 9 pin female 9 pin female 2 G1530 60930 2 m APG remote cable 9 pin male 9 pin male 3 Two 82167 60003 5 m INET cables 4 G1530 61120 Modem cable 9 pin female 9 pin male OR 24540 80012 also 24542M Modem cable 9 pin female 25 pin male 6890 GC ALS 1 RS 232 2 APG remote Modem 4 Modem INET Integrator The 7683 ALS controller is interna...

Page 589: ... Figure 1010 6 Number Part no and description 1 G1530 60600 2 m RS 232 cable 9 pin female 9 pin female 2 G1530 60930 2 m APG remote cable 9 pin male 9 pin male 3 03396 61020 2 m APG remote cable 9 pin 15 pin 4 G1530 60570 2 m Analog cable 6 pin 5 03396 60560 BCD cable 6890 GC ALS 1 RS 232 2 APG remote 3 APG remote 4 Analog 3395A 3396B Integrator 5 BCD The 7683 ALS controller is internal to the 689...

Page 590: ...er Figure 1010 7 Number Part no and description 1 G1530 60600 2 m RS 232 cable 9 pin female 9 pin female 2 G1530 60930 2 m APG remote cable 9 pin male 9 pin male 3 03396 61010 APG remote cable 9 pin 15 pin 4 G1530 60570 2 m Analog cable 6 pin 5 03396 60560 BCD cable 6890 GC ALS 1 RS 232 2 APG remote 3 APG remote 4 Analog 3395B 3396C Integrator 5 BCD The 7683 ALS controller is internal to the 6890 ...

Page 591: ...id Sampler Figure 1010 8 Number Part no and description 1 G1530 60600 2 m RS 232 cable 9 pin female 9 pin female 2 G1530 60930 2 m APG remote cable 9 pin male 9 pin male 3 G1530 60930 2 m APG remote cable 9 pin male 9 pin male 4 G1530 60570 2 m Analog cable 6 pin 5 35900 60850 BCD cable 6890 GC ALS 1 RS 232 2 APG remote 3 APG remote 4 Analog 33900 C D E A D converter 5 BCD The 7683 ALS controller ...

Page 592: ...Plus 1010 6890 GC 7694 Headspace Sampler GC ChemStation 6890 GC 7694 Headspace Sampler GC ChemStation Figure 1010 9 Number Part no and description 1 G1290 60575 APG remote cable 3 pin male 4 pin male 2 8120 3446 2 m GPIB cable 3 24542U RS 232 cable 9 pin female 9 pin female 6890 GC 7694 HS 1 APG remote 2 GPIB GC ChemStation 3 RS 232 ...

Page 593: ...ics Agilent 6890 Gas Chromatograph Service Manual 6890 GC 7694 Headspace Sampler 3396B C INET Integrator Figure 1010 10 Number Part no and description 1 G1290 60575 APG remote cable 3 pin male 4 pin male 2 Two 82167 60003 5 m INET cables 3 03396 60530 RS 232 cable 15 pin male 9 pin female 6890 GC 2 INET INET Integrator 7694 HS 1 APG remote 3 RS 232 ...

Page 594: ...e Sampler Non INET Integrator Figure 1010 11 Number Part no and description 1 G1290 60575 APG remote cable 3 pin male 4 pin male 2 03396 61010 APG remote cable 9 pin 15 pin for 3395B 3396C OR 03396 61020 APG remote cable 9 pin 15 pin for 3395A 3396B 3 G1530 60570 2 m Analog cable 6 pin 4 03396 60530 RS 232 cable 15 pin male 9 pin female 6890 GC 3 Analog Non INET 7694 HS 1 APG remote 4 RS 232 2 APG...

Page 595: ... and description 1 G1290 60575 APG remote cable 3 pin male 4 pin male 2 35900 60670 2 m APG remote cable 9 pin male spade lugs 3 G1530 60560 Analog cable 6 pin spade lugs 4 03396 60570 Binary coded decimal cable G1530 60560 analog cable spade lug identification Pin Color Signal 1 Black 1 mV COM 2 Red 1 V and 1 DV COM 3 White 1 mV 4 Orange 1 V 5 Brown Chassis ground 6 Blue 1 DV 6890 GC 7694 HS 1 AP...

Page 596: ... Events an unspecified non Agilent instrument Figure 1010 13 Number Part no and description 1 G1530 60590 External events cable 8 pin spade lugs Partno G1530 60590external event cablespade lug identification Pin Color Signal 1 Yellow 24 V Out 1 2 Black 24 V Out 2 3 Red Ground 4 White Ground 5 Orange Contact 1 6 Green Contact 1 7 Brown Contact 2 6 Blue Contact 2 6890 GC Unspecified 1 External event...

Page 597: ...and Trap 14 of 14 Jun 2001 Cabling Configuration and Electronics Agilent 6890 Gas Chromatograph Service Manual 6890 GC G1900A Purge and Trap Figure 1010 14 Number Part no and description 1 G1900 60820 APG remote cable 6890 GC G1900A 1 External event Purge and trap ...

Page 598: ...ure 1015 1 Connectors on the back of the GC S A M P L E R 1 S A M P L E R 2 T R A Y S I G 1 S I G 2 E V E N T B C D R S 2 3 2 R E M O T E LAN Power and communication for front G2613A injector Power and communication for back G2613A injector Power and communication for G2614A tray Analog outputs for integrators or analog to digital A D converters LAN Remote start stop for communication with 3395 33...

Page 599: ... Automatic Liquid Sampler Figure 1015 2 GC networked GC ChemStation Cerity GC ALS Number Part no and description 1 G1530 61485 Cable 100 Base T LAN 2 G1530 61120 RS 232 modem cable or 24540 80012 RS 232 modem cable 6890N GC with 7683 ALS if used Networked GC ChemStation Cerity 1 LAN cable The 7683 controller is internal to the 6890N GC The G2613A Injector and the G2614A tray plug directly into the...

Page 600: ... Liquid Sampler 6890N GC Mass Selective Detector GC ChemStation GC Automatic Liquid Sampler Figure 1015 3 Number Part no and description 1 G1530 60930 2 m APG remote cable 9 pin male 9 pin male 2 G1530 61485 Cable 100 Base T LAN 6890N GC GC ChemStation MSD 1 APG remote 2 LAN 2 LAN The 7683 ALS controller is internal to the 6890N GC The G2613A injector and G2614A tray plug into the GC Hub ...

Page 601: ... G1530 60590 External event cable 8 pin spade lugs 35900 60670 APG remote cable spade lug identification G1530 60590 External event cable spade lug identification Connect 1 9 pin male Signal name Connector 2 spade lugs Pin Color Signal 1 GND Black 1 Yellow 24 V Out 1 2 Prepare White 2 Black 24 V Out 2 3 Start Red 3 Red Ground 4 Shut down Green 4 White Ground 5 Reserved Brown 5 Orange Contact 1 6 P...

Page 602: ...matic Liquid Sampler 6890N GC 3395A 3396B Integrator GC Automatic Liquid Sampler Figure 1015 4 Number Part no and description 1 03396 61020 2 m APG remote cable 9 pin 15 pin 2 G1530 60570 2 m Analog cable 6 pin The 7683 ALS controller is internal to the 6890N GC The G2613A injector and G2614A tray plug into the GC 6890N GC 2 Analog 1 APG Remote 3395A 3396B Integrator ...

Page 603: ...tograph Service Manual 6890N GC 3395B 3396C Integrator GC Automatic Liquid Sampler Figure 1015 5 Number Part no and description 1 03396 61010 APG remote cable 9 pin 15 pin 2 G1530 60570 2 m Analog cable 6 pin The 7683 ALS controller is internal to the 6890N GC The G2613A injector and G2614A tray plug into the GC 6890N GC 2 Analog 1 APG Remote 3395B 3396C Integrator ...

Page 604: ...Liquid Sampler 6890N GC 35900C D E Analog to Digital Converter GC Automatic Liquid Sampler Figure 1015 6 Number Part no and description 1 G1530 60930 2 m APG remote cable 9 pin male 9 pin male 2 G1530 60570 2 m Analog cable 6 pin The 7683 ALS controller is internal to the 6890N GC The G2613A injector and G2614A tray plug into the GC 6890N GC 2 Analog 35900 C D E A D Converter 1 APG Remote ...

Page 605: ...lent 6890 Gas Chromatograph Service Manual 6890N GC 7694 Headspace Sampler GC ChemStation Figure 1015 7 Number Part no and description 1 G1290 60575 APG remote cable 3 pin male 4 pin male 2 G1530 61485 Cable 100 Base T LAN 3 G1290 60650 RS 232 cable 9 pin female 9 pin female 6890N GC 7694 HS 1 APG remote 2 LAN GC ChemStation 3 RS 232 ...

Page 606: ...er Non INET Integrator Figure 1015 8 Number Part no and description 1 G1290 60575 APG remote cable 3 pin male 4 pin male 2 03396 61010 APG remote cable 9 pin 15 pin for 3395B 3396C OR 03396 61020 APG remote cable 9 pin 15 pin for 3395A 3396B 3 G1530 60570 2 m Analog cable 6 pin 4 03396 60530 RS 232 cable 15 pin male 9 pin female 6890N GC 3 Analog Non INET 7694 HS 1 APG remote 4 RS 232 2 APG remote...

Page 607: ...escription 1 G1290 60575 APG remote cable 3 pin male 4 pin male 2 35900 60670 2 m APG remote cable 9 pin male spade lugs 3 G1530 60560 Analog cable 6 pin spade lugs 4 03396 60570 Binary coded decimal cable G1530 60560 analog cable spade lug identification Pin Color Signal 1 Black 1 mV COM 2 Red 1 V and 1 DV COM 3 White 1 mV 4 Orange 1 V 5 Brown Chassis ground 6 Blue 1 DV 6890 GC 7694 HS 1 APG remo...

Page 608: ...al Cabling Diagrams 6890N 1015 6890N GC External Events an unspecified non Agilent instrument 6890N GC External Events an unspecified non Agilent instrument Number Part no and description 1 G1530 60590 External events cable 8 pin spade lugs 6890 GC Unspecified 1 External event non Agilent instrument ...

Page 609: ...event connections Connector Signal name Maximum rating Wire terminations Corresponds to valve 24 volt control output 1 24 volt output 1 75 mA output Yellow 5 2 24 volt output 2 75 mA output Black 6 3 Ground Red 4 Ground White Relay contact closures normally open 5 Contact closure 1 48V AC DC 250 mA Orange 7 6 Contact closure 1 Green 7 7 Contact closure 2 48 V AC DC 250 mA Brown or violet 8 8 Conta...

Page 610: ...gilent 6890 Gas Chromatograph Service Manual Cabling Diagrams 6890N 1015 6890N GC G1900A Purge and Trap 6890N GC G1900A Purge and Trap Figure 1015 11 Number Part no and description 1 G1900 60820 APG remote cable 6890N GC G1900A 1 External event Purge and trap ...

Page 611: ...elective Detector GC ChemStation Cerity Headspace Sampler Figure 1015 12 Number Part no and description 1 G1530 61200 2m APG Y cable 2 G1530 61485 Cable 100 Base T LAN 3 G1290 60575 Headspace Remote Start Stop cable 6890N GC GC ChemStation MSD 2 LAN 2 LAN The 7683 ALS controller is internal to the 6890N GC The G2613A injector and G2614A tray plug into the GC Hub 7694 1 APG Y cable 3 Headspace Remo...

Page 612: ...k panel labeled Sig 1 and Sig 2 Two cables are available one for 3395 6 series integrators and one for general use Analog cable GC to 3395A B or 3396B C Integrators and 35900 C D E Analog to Digital Interface instrument Connector 1 Signal Name Color Connector 2 4 1 V Black 3 2 Common White 2 Shell Ground Orange 1 4 Part no G1530 60570 1 next to triangle etched on connector 5 6 3 1 2 G1530 60570 3 ...

Page 613: ...ctronics Agilent 6890 Gas Chromatograph Service Manual Analog cable general use Connector 1 Signal name Connector 2 quick disconnects 1 0 to 1 mV Brown 2 0 to 1 V 0 to 10 V White 3 0 to 1 mV Red 4 1 V Black 6 10 V Blue Shell Ground Orange 5 6 3 1 2 4 G1530 60560 Shell Part no G1530 60560 1 2 ...

Page 614: ...is RS 232C serial port labeled sampler on the back of the GC is preconfigured to connect the GC to an Automatic Liquid Sampler Cable pinouts 6890 GC to Automatic Liquid Sampler Connector 1 9 pin female Connector 2 9 pin female 1 DCD 6 DSR 4 DTR 2 Rx 3 Tx 3 Tx 2 Rx 4 DTR 6 DSR 1 DCD 5 Ground 5 Ground 7 RTS 8 CTS 8 CTS 7 RTS 9 RI 9 6 5 1 1 6 9 Part no G1530 60600 G1530 60600 5 1 2 ...

Page 615: ...s installed three connectors are available for the 7683 Autosampler system 6890N There are three connectors Sampler 1 Sampler 2 and Tray for the 7683 Autosampler system Cable pinouts 6890 Plus 6890N GC to G2613A Injector Part no G2613 60590 Connector 1 16 pin female Connector 2 16 pin female A1 RXD A1 TXD A2 CTS A2 RTS A3 DSR A3 DTR A4 NCTL Reset A4 NCTL Reset A5 GND A5 GND A6 VAC 1 A6 VAC 1 A7 GN...

Page 616: ...s Cable pinouts 6890 Plus 6890N to G2614A Tray Part no G2614 60610 Connector 1 16 pin female Connector 2 16 pin female A1 RXD A1 TXD A2 CTS A2 RTS A3 DSR A3 DTR A4 M Reset A4 M Reset A5 GND A5 GND A6 VAC 1 A6 VAC 1 A7 GND A7 GND A8 VAC 2 A8 VAC 2 B1 TXD B1 RXD B2 RTS B2 CTS B3 DTR B3 DSR B4 GND B4 GND B5 GND B5 GND B6 VAC 1 B6 VAC 1 B7 GND B7 GND B8 VAC 2 B8 VAC 2 ...

Page 617: ...t sense open closed contacts If you are using a multiposition stream selection valve you must also have an external event cable Connector 1 15 pin male Signal name Logic Color 1 LS digit 0 Low true Black 2 LS digit 1 Low true Brown 3 LS digit 2 Low true Red 4 LS digit 3 Low true Orange 5 6 7 Unused 8 Ground Gray 9 10 11 Unused 12 MS digit 0 Low true Yellow 13 MS digit 1 Low true Green 14 MS digit ...

Page 618: ...e connector provides the control relays and a BCD input for a stream selector Multi Valve BCD Connector Pin Function Color Maximum rating 1 Relay Yellow 48 V AC DC 250 mA 2 Relay Black 48 V AC DC 250 mA 3 LS digit 0 Red 4 LS digit 1 White 5 LS digit 2 Orange 6 LS digit 3 Green 7 MS digit 0 Brown or Violet 8 GND Blue Shield Chassis GND 8 6 2 1 ...

Page 619: ...sures must be connected to their own power source Connector Signal name Maximum rating Wire terminations Corresponds to valve 24 volt control output 1 24 volt output 1 75 mA Yellow 5 2 24 volt output 2 75 mA Black 6 3 Ground Red 4 Ground White Relay contact closures Normally open 5 Contact closure 1 48V ac dc 250 mA Orange 7 6 Contact closure 1 Green 7 7 Contact closure 2 48 V ac dc 250 mA Brown o...

Page 620: ...ronics 1020 Modem RS 232C Modem RS 232C Cable pinouts 6890 GC to Computer via RS 232 9 pin 9 pin Connector 1 9 pin female Connector 2 9 pin female 1 DCD 6 DSR 4 DTR 2 Rx 3 Tx 3 Tx 2 Rx 4 DTR 6 DSR 1 DCD 5 Ground 5 Ground 7 RTS 8 CTS 8 CTS 7 RTS 9 RI 1 5 6 9 9 6 5 1 G1530 60600 Part no G1530 60600 5 1 1 5 6 9 1 2 ...

Page 621: ...Gas Chromatograph Service Manual Cable pinouts 6890 GC to Computer via RS 232 9 pin 25 pin Connector 1 9 pin female Connector 2 25 pin male 1 DCD 6 DSR 20 DTR 2 Rx 2 Tx 3 Tx 3 Rx 4 DTR 6 DSR 8 DCD 5 Ground 7 Ground 7 RTS 5 CTS 8 CTS 4 RTS 9 RI 9 6 5 1 1 13 14 25 G1530 60610 Part no G1530 60610 1 13 5 1 1 2 ...

Page 622: ... Service Manual Cable Electronics 1020 Modem RS 232C Cable pinouts 6890 GC to Modem 9 pin 9 pin Connector 1 9 pin female Signal name Connector 2 9 pin male 1 DEC 1 2 RxD 2 3 TxD 3 4 DTR 4 5 GND 5 6 DSR 6 7 RTS 7 8 CTS 8 9 RI Unused 9 1 5 6 9 9 6 5 1 G1530 61120 Part no G1530 61120 2 1 2 ...

Page 623: ...gilent 6890 Gas Chromatograph Service Manual Cable pinouts 6890 GC to Modem 9 pin 25 pin Connector 1 9 pin female Signal name Connector 2 25 pin male 1 DCD 8 2 RxD 3 3 TxD 2 4 DTR 20 5 GND 7 6 DSR 6 7 RTS 4 8 CTS 5 9 Unused 22 9 6 5 1 14 25 1 13 24540 80012 Part no 24540 80012 or 24542M 1 13 2 1 ...

Page 624: ... 9 pin male Signal name Connector 2 spade lugs 1 GND Black 2 Prepare low true White 3 Start low true Red 4 Shut down 6890A Plus start relay 6890N Green 5 Reserved 6890A Plus start relay 6890N Brown 6 Power on 6890A Plus no connection 6890N Blue 7 Ready high true input Orange 8 Stop low true Yellow 9 Start request 6890A Plus no connection 6890N Violet 6 9 1 5 35900 60670 Part no 35900 60670 2 1 ...

Page 625: ...C D E MSD Sampler 2 meters Connector 1 male Signal name Connector 2 male 1 GND 1 2 Prepare 2 3 Start 3 4 Shut down 6890A Plus start relay 6890N 4 5 Reserved 6890A Plus start relay 6890N 5 6 Power on 6890A Plus no connection 6890N 6 7 Ready 7 8 Stop 8 9 Start request 6890A Plus no connection 6890N 9 6 9 1 5 5 1 9 6 G1530 60930 Part no G1530 60930 9 6 5 1 1 2 ...

Page 626: ...nector 1 9 pin male Signal name Connector 2 15 pin male 1 GND 9 Ground 2 Prepare NC 3 Start 3 Start in 4 Shut down 6890A Plus start relay 6890N NC 5 Reserved 6890A Plus start relay 6890N NC 6 Power on 6890A Plus no connection 6890N NC 7 Ready 14 Ready out 8 Stop NC 9 Start request 6890A Plus no connection 6890N NC NC no connection 6 9 1 5 8 1 15 9 03396 61020 Part no 03396 61020 2 1 ...

Page 627: ...tor 1 9 pin male Signal name Connector 2 15 pin male 1 GND 9 Ground 2 Prepare NC 3 Start 3 Start in 4 Shut down 6890A Plus start relay 6890N NC 5 Reserved 6890A Plus start relay 6890N NC 6 Power on 6890A Plus no connection 6890N NC 7 Ready 14 Ready out 8 Stop 4 STOP2 In 9 Start request 6890A Plus no connection 6890N NC NC no connect 6 9 1 5 1 8 9 15 03396 61010 Part no 03396 61010 1 2 ...

Page 628: ... 6890 Gas Chromatograph Service Manual Cable Electronics 1020 Remote Cable pinouts 6890 GC to 7694 Headspace Sampler Connector 1 3 pin male Signal name Connector 4 pin male 1 GND 4 5 3 Start 6 7 Ready 3 Part no G1290 60575 G1290 60575 1 3 7 1 3 4 6 To ground screw ...

Page 629: ...aph Service Manual Cable pinouts APG Remote Y cable Connector 1 9 pin male Signal name 1 GND 2 Prepare 3 Start 4 Shut down 6890A Plus start relay 6890N 5 Reserved 6890A Plus start relay 6890N 6 Power on 6890A Plus no connection 6890N 7 Ready 8 Stop 9 Start request 6890A Plus no connection 6890N Part no G1530 61200 ...

Page 630: ...1100 Valves Maintaining the valves in the 6890 instrument 1110 Valves 1120 Valve Box 1130 Actuators 1140 Typical Valve Configurations 1150 Troubleshooting ...

Page 631: ......

Page 632: ...Read all the accompanying information and avoid the following operational abuses Exceeding the specified temperature and pressure ranges Plugging a valve with column packing or sample precipitation Scoring valve surfaces with column packing or particulates in liquid or gas sample Contaminating the system with samples non eluting materials or poor quality support gases Because valves operate best a...

Page 633: ...lco W series minivalve Table 1110 1 Part Numbers for 6890 Valves General purpose Gas Sample valves Ports Low temp High temp 6 5062 9508 0101 0584 10 5062 9510 0101 0585 Liquid sampling valves Ports Volume Pressure Valve 4 0 2 µL 1000 0101 0636 4 0 5 µL 1000 0101 0637 4 1 0 µL 1000 0101 0638 4 0 5 µL 5000 0101 0639 P Port 1 Port 2 Port 3 Port 4 Port 5 Port 6 Mounting hole Mounting hole Left CCW sto...

Page 634: ...room temperature to 200 C A black rotor is made of polyimide and may be used from 100 to 350 C Caution The life of a valve is shortened if used outside its specified temperature range Do not mix rotor types in the same system The rotor seats on a highly polished conical surface When properly seated the polished surface prevents leakage around the rotor and between non selected ports The finish pre...

Page 635: ...ameter of 0 016 inch Figure 1110 2 6 port valve actuator side view showing flow path grooves Gas sample loops A 0 25 mL sample loop is included with all gas sampling valve systems 10 mL and 5 mL loops occupy one valve position limiting the number of valves that can be housed in a valve compartment Adjustable restrictor valves Adjustable restrictors are used to balance flow resistance between the t...

Page 636: ...s available in low 1000 psig limit and high pressure 5000 psig versions the other sizes are low pressure 1000 psig only An adjustable restrictor may be used on the sample outlet line to maintain internal sample pressure to keep a compressed gas liquefied Temperature ranges 1 16 inch Teflon rotor valves 0 to 200 C Adjustable restrictor valves Ambient to 225 C Caution The life of an LSV is shortened...

Page 637: ...1110 Valves Liquid sample valves 6 of 6 Jun 2001 Valves Agilent 6890 Gas Chromatograph Service Manual ...

Page 638: ...of the 6890 GC and contains the valves and plumbing heated zones and sensors and the insulation 1 Use a pair of diagonal cutters to remove the metal cutout on the top of the GC WARNING Be careful of sharp edges Cut toward the outside edge of the tabs so that the valve box will fit correctly Figure 1120 1 Removing the sheet metal cutout ...

Page 639: ...l 2 Screw the aluminum standoffs into the valve box bottom plate using one Torx T 20 screw for each standoff Figure 1120 2 Attaching the standoffs to the bottom plate 3 Screw the valve box bottom plate onto the top of the GC using three Torx T 20 screws Figure 1120 3 Attaching the bottom plate to the 6890 GC ...

Page 640: ...or plumbing into the GC Punch out the pre perforated insulation from the holes you plan to use 5 Use two Torx T 20 screws to mount the heater block s on the valve box bottom plate 6 Install the heater sensor into the heater block s and secure the leads to the valve box bottom plate with the U clamp and two Torx T 10 screws Note Make sure that the sensor is seated all the way in the heater block Fi...

Page 641: ...he appropriate hole s in the heater block and secure each valve with two long Torx T 10 screws Figure 1120 5 Installing valves 8 Plumb the valves in the appropriate configuration A variety of valve configurations are diagrammed in the Typical Valve Configurations section in this chapter 9 Orient all of the valves in the OFF CCW position ...

Page 642: ...valve box top Make sure the perforations in the insulation line up properly with the valve box top 11 Insert the insulation retainer plate in the bottom of the valve box top and secure it to the threaded studs using the two 5 5 mm nuts Tighten the nuts until they are flush with the top of the stud Make sure the holes in the retainer plate line up with the perforations in the insulation CCW Stop OF...

Page 643: ...lding the valve box top over a waste receptacle punch or cut out the insulation from the appropriate holes 13 Use two Torx T 20 screws to secure the valve box top over the installed valves making sure the heater sensor leads are routed under the appropriate cutout s Make sure the valve box top is oriented correctly with holes punched out over the installed valves Retainer plate Insulation Valve bo...

Page 644: ...lves Agilent 6890 Gas Chromatograph Service Manual Valve Box 1120 Installing the valve box Figure 1120 8 Installing the valve box top assembly 14 Install the actuators as described in the Actuators section of this chapter ...

Page 645: ...e working on the instrument 2 Unplug the line power cord from its receptacle 3 Allow some time for the oven and heated zones to cool 4 When the oven has cooled turn off all gas supplies 5 Switch the solenoid valve off so the actuator is in its fully extended position piston rod extended as shown Figure 1120 9 Actuator in the fully extended position 6 If variable restrictors are present remove thei...

Page 646: ...in from its at rest position Note If valve actuator alignment is to be made see Valve Actuator Alignment in this section 8 To reassemble Align the two mounting holes in the valve box top assembly with the standoffs in the valve box Lower the box top assembly until it rests on the standoffs 9 Secure the valve box top assembly with two Torx T 20 mounting screws Tighten these screws firmly Reinstall ...

Page 647: ...1120 Valve Box Removing the valve box assembly 10 of 10 Jun 2001 Valves Agilent 6890 Gas Chromatograph Service Manual ...

Page 648: ...he Valve Box section you can install the valve actuators 2 Set each actuator to the appropriate degree of rotation Move the grenade style pin to the hole on the actuator marked with the correct degree of rotation as shown below Four port valves Place the pin in the 90 hole Six port valves Place the pin in the 60 hole Ten port valves Same as six port valves but with the tubular 36 actuator limiter ...

Page 649: ...stalling the actuators 2 of 12 Jun 2001 Valves Agilent 6890 Gas Chromatograph Service Manual 3 Mount an actuator over each valve installed using two Torx T 20 screws Figure 1130 2 Mounting the actuator on the valve box ...

Page 650: ...hex nut on the actuator near the drive shaft b Slide the shaft down c Insert a flat bladed screw driver in the slot on the top of the actuator and turn the shaft back and forth until you feel the coupler engage the valve d Tighten the set screw Figure 1130 3 Engaging the actuator drive shaft with the valve 5 Install the valve actuator drivers as described in the following section ...

Page 651: ...ve 8 Table 1130 1 6890 GC Valve Designations There is a BCD input for controlling a multiposition valve If a valve is configured as a multiposition valve and the BCD is connected to this valve a position can be selected directly from the keyboard Valve Driver Purpose Valves 1 4 24 volt 13 watt Normal valve operation Valves 5 6 24 volt 100 mA Relays low power devices Valves 7 8 48 Vdc or 48 Vac rms...

Page 652: ... must be installed for each valve actuator installed Assemble the valve driver block as in Figure 1130 4 The example in this procedure shows a valve driver block parts breakdown for a two valve system 1 Install two mounting posts on the intake exhaust endplate two large threaded holes Install an O ring in the supply exhaust ports on the inside of the plate 2 Slide a valve driver over the mounting ...

Page 653: ...lent 6890 Gas Chromatograph Service Manual 3 For each additional valve installed install two more mounting posts and a valve driver with O rings in the same manner as the first 4 When all the drivers have been installed screw on the other end plate with the two hex screws as shown ...

Page 654: ...talling the valve actuator drivers 2 Screw the valve driver bracket into the right side of the GC using the two captive screws Figure 1130 5 Assembling the valve driver block 3 Plug the connectors on the valve driver cable harness up through the slots on the valve driver bracket Plug the larger 2 2 heater sensor connectors P1 P2 into the outside slots and the smaller 1 2 valve driver connectors P3...

Page 655: ...ight side of the instrument through one of the keyhole wiring slots and into the P1 or P2 detector on the actuator bracket Install the valve driver block 1 Slide the valve driver block down into the driver bracket until the drivers plug into the connectors Note To remove drivers from the driver block use a hex wrench to unscrew the two hex screws on the left side of the block Remove the driver col...

Page 656: ...river block 2 Plug theother endof thevalvedrivercable harnessinto theP22connector on the main board 3 Wrap the threaded ends of the 90 elbow fitting in Teflon pipe tape Screw the fitting into the air supply intake on the side of the valve driver block facing the rear of the GC The supply intake is the outside threaded hole the one farthest from the main board ...

Page 657: ...he screw plugs if present on the top of each driver you are using Replace the screw plugs with tubing connectors 6 Plumb the tubing from each installed actuator to the tubing connectors on the corresponding driver The tubing from the side of the actuator goes to the connector farthest from the main board Grip the tubing with a piece of sandpaper and push it onto the tubing connector Valve actuator...

Page 658: ...ssembly 5 Gently rotate and push the coupling shaft assembly with a blade type screwdriver until the slot on the coupling fully engages the valve rotor index pin Repeat this procedure for each valve installed Caution Use care in performing the following operation so as not to accidentally turn the valve rotor away from its preset step 3 position 6 Make sure that all solenoid valves are turned off ...

Page 659: ...1130 Actuators Installing the valve actuator drivers 12 of 12 Jun 2001 Valves Agilent 6890 Gas Chromatograph Service Manual ...

Page 660: ...g configurations possible with the 6890 gas chromatograph The symbols used in these diagrams are explained in the legend below Legend Arrows indicate the direction of flow Loops have a specified volume 5 Jumper volume is not specified Adjustable Restrictors can be manually set to adjust its pressure drop e g to balance flow Fixed restrictors cannot be adjusted Union Fitting Column ...

Page 661: ...rations 2 of 10 Jun 2001 Valves Agilent 6890 Gas Chromatograph Service Manual ON OFF Custom Plumbing diagram Required Option 700 or 730 Column or 2nd Valve ON Carrier Loop In Out OFF Gas Sampling Option Option 701 or 731 Sample ...

Page 662: ...e Configurations 1140 Column Carrier Column 2 Detector valve Adj Restr ON OFF Column Isolation Option 702 or 732 Stream 1 in Vent Stream 2 in OFF ON to GSV Sample in Two Stream Selection Requires Gas Sampling Option 703 or 733 1 High temperature needle valve supplied with option 732 ...

Page 663: ... Jun 2001 Valves Agilent 6890 Gas Chromatograph Service Manual Column Carrier Detector OFF ON Backflush to Detector Option 704 or 734 Precolumn 1st Carrier 2nd Carrier Detector Column Backflush a Precolumn to Vent Option 705 or 735 OFF ON Vent ...

Page 664: ...h Service Manual Typical Valve Configurations 1140 Column 1 Column 2 OFF ON Column Selection Unused Column Isolated Option 706 or 736 Column 1 Carrier Detector Column 2 Carrier ON OFF Sequence Reverse Option 707 or 737 From Flow controller Inj Port or GSV ...

Page 665: ...0 Typical Valve Configurations 6 of 10 Jun 2001 Valves Agilent 6890 Gas Chromatograph Service Manual Column 1 Carrier Column 2 Detector ON OFF Sequence Reverse with Backflush of Column 1 Option 708 or 738 ...

Page 666: ...ce Manual Typical Valve Configurations 1140 OFF ON Custom Plumbing Diagram Required Option 800 or 830 Column Detector or 2nd Valve 1st Carrier Out Sample In Loop 2nd Carrier OFF ON Gas Sampling with Backflush of Precolumn to Vent Option 801 or 831 Precolumn Vent ...

Page 667: ...matograph Service Manual Column Detector or 2nd Valve Carrier Out In Sample Loop ON OFF Gas Sampling with Backflush to Detector Option 802 or 832 Out In Carrier Out In Loop 1 Sample 1 Sample 2 Loop 2 Detector or 2nd Valve ON OFF Gas Sampling of Alternate Streams Option 803 or 833 ...

Page 668: ... Valve Configurations 1140 Column 2 Carrier Out IN Sample Loop OFF ON Column 1 Gas Sampling with Sequence Reverse Option 804 or 834 Column2 Carrier Out In Sample Column 1 Detector or 2nd Valve ON OFF Gas Sampling with Sequence Reverse and Backflush of Column 1 Option 805 or 835 ...

Page 669: ...1 Valves Agilent 6890 Gas Chromatograph Service Manual Column 2 Carrier 1 Carrier 2 OFF Detector or 2nd Valve ON Column 1 Vent Column Selection with Backflush to Vent Option 806 or 836 Carrier Carrier OFF ON Liquid Sampling Options 850 852 854 and 856 ...

Page 670: ...ooting The following symptom cause list gives the most commonly encountered problems found with valves and their solution Table 1150 1 Troubleshooting valve related chromatographic problems Symptom Possible cause Solution Lost peaks degradation Valve or transfer lines too hot Reduce temperature 50 C reevaluate Transfer line activity Use nickel or Hastelloy tubing Lost or tailing peaks Valve or tra...

Page 671: ...of proper conditioning techniques columns etc Failure or deterioration of other components columns detectors etc Loss of peaks in specific areas of the chromatogram Entire sections of chromatographic data can be lost due to a valve that does not rotate or one that rotates improperly Other than obvious component failures solenoid actuator etc improper adjustments and misalignments cause most proble...

Page 672: ...ct the valve to the inlet or column with short lengths of connecting tubing of narrow inner diameter If early eluting peaks are too broad stationary phase or thermal focusing effects should be used with packed column ports or increased split flows when capillary split inlets are used Inlets should be equipped with narrow inner diameter liners and narrow bore connecting tubing should be used betwee...

Page 673: ...et is a shift in the baseline that does not return quickly to the original level Baseline offsets may be caused by air leaks but more commonly are due to a change in gas purity or flow rate in the detector Poor carrier gas or improperly conditioned filters and traps should be suspected whenever offsets occur Variation in peak area and retention time The amount of sample contained in the loop and t...

Page 674: ...psi Allow 2 to 5 minutes for pressure to equilibrate If your instrument has flow control it should read zero flow 3 Turn off the gas supply at the source 4 Generally the pressure will drop quickly for approximately 30 to 60 seconds then stabilize After this initial pressure drop the gauge should not indicate more than a 7 to 14 kPa 1 to 2 psi drop during a 10 minute period 5a If no leak is indicat...

Page 675: ...1150 Troubleshooting Pressure check 6 of 6 Jun 2001 Valves Agilent 6890 Gas Chromatograph Service Manual ...

Page 676: ...Electrical diagrams wiring connector pinouts 1210 External Connectors 6890A and 6890 Plus 1215 External Connectors 6890N 1220 Main Board 6890A and 6890 Plus 1225 Main Board 6890N 1230 Power Supply 1240 Wiring Harnesses ...

Page 677: ......

Page 678: ...nector 1 integrators or A D converters 2 integrators or A D converters 3 6 GC integrators automatic samplers MSD and other GCs 4 computer or controller devices Sampler RS 232 for 7673 Automatic Liquid Sampler 7 24 volt outputs for valve control 8 headspace sampler or other device 9 10 1 2 3 4 5 6 7 8 9 10 Back of 6890 GC JP2 5 Modular Input Output MIO slot J5 GPIB for ChemStation and or MSD J6 BCD...

Page 679: ...al RS 232 connector for the sampler is not used on this model Figure 1210 2 6890 Plus GC external connections Number Description ID Connector 5 Not used for 6890 Plus GC s 11 Sampler G2613A Automatic Liquid Sampler front injector 12 JP2 P2 P4 13 Sampler G2614ATray P3 11 12 13 5 Back of 6890 Plus GC with G2612A ALS PCB Installed Interface Sampler G2613A Automatic Liquid Sampler back injector Defaul...

Page 680: ... Chromatograph Service Manual External Connectors 6890A and 6890 Plus 1210 Signal 1 Signal 2 analog out Signal 1 Signal 2 analog out J1 J2 Analog out Pin Function 1 1 mV COM 2 1 V 10 V COM 3 1 mV 4 1 V 5 Chassis GND 5 3 1 2 4 6 5 3 1 2 4 6 6 10V ...

Page 681: ...start stop JP1 JP2 APG Bus Pin Function Logic 1 Digital ground LOW true 2 Prepare LOW true 3 Start LOW true input 4 Shutdown LOW true 5 Reserved 6 Power on HIGH true 7 Ready HIGH true output 8 Stop LOW true 9 Start request LOW true input 5V U52 Transceiver Prepare Start Shutdown Reserved Ready Stop Start request Power on ª 1 7W 5V Relay 1 5 6 9 1 5 6 9 ...

Page 682: ... is any sequence controller Stop low Request to reach system ready state as soon as possible for example stop run abort or finish and stop injection Receiver is any module performing runtime controlled activities Start Request low Request to start injection cycle for example by a Start key on any module Receiver is the automatic liquid sampler APG remote control Remote control allows easy connecti...

Page 683: ...run triggeredon therespective lines In addition PREPARE and START REQUEST may be issued The signal levels are defined as standard TTL levels 0 V is logic true 5 V is logic false Input Load 2 2 kOhm against 5 V Output type is open collector Prepare Start Request Start Stop Shutdown Ready H H H H H L Waiting for Ready System Ready Request for Prepare Not Ready during Prep System Ready Start Requeste...

Page 684: ... 232 JP1 Host Modem JP2 Sampler RS 232 Pin Function In Out 1 DCD INPUT 2 RxD INPUT 3 TxD OUTPUT 4 DTR OUTPUT 5 GND 6 DSR INPUT 7 RTS OUTPUT 8 CTS INPUT 9 unused INPUT No Connect 1 5 6 9 1 5 6 9 RS 232 Standard wiring Transmitters Receivers 3 TxD 7 RTS 4 DTR 2 RxD 8 CTS 6 DSR 1 DCD 5 GND 1 2 3 4 5 6 7 8 9 RS 232 Loop back wiring ...

Page 685: ...y is connected to the SC26C92 Not currently used Request to Send is set ON when the 6890 GC to the host when HARDWARE flow control set If flow control is configured for XON XOFF or NONE RTS will stay ON If HARDWARE handshake is configured RTS is used to inform the host that the 6890 GC is ready to communicate and there is room in the data buffer for data RTS will follow the same logic as XON XOFF ...

Page 686: ... 48V ac dc 250 mA 8 8 Contact 2 8 9 Chassis GND 3 1 2 5 6 7 8 Note The 24V OUT1 and 24V OUT2 signals are shown on the same circuitry diagram below however they each have their own distinct cir cuits The CONTACT1 and CONTACT2 signals are presented in the same manner Bold designators refer to the bold signal to the right 24V Current limited R88 R87 11 U113 037 035 R207 R201 287 R208 R208 036 038 10 ...

Page 687: ...L Pin Function Logic Value 1 LS Digit 0 LOW true 1 2 LS Digit 1 LOW true 2 3 LS Digit 2 LOW true 4 4 LS Digit 3 LOW true 8 5 unused 6 unused 7 unused 8 GND 9 unused 10 unused 11 unused 12 MS Digit 0 LOW true 10 13 MS Digit 1 LOW true 20 14 MS Digit 2 LOW true 40 15 MS Digit 3 LOW true 80 U114 Buffer 5V LSO LS1 LS2 LS3 MS0 MS1 MS2 MS3 ª 4 7K W 1 8 9 15 Value ...

Page 688: ...11 of 14 Jun 2001 Electrical Agilent 6890 Gas Chromatograph Service Manual External Connectors 6890A and 6890 Plus 1210 GPIB GPIB Female GPIB connector 1 12 13 24 ...

Page 689: ...O INET 12 of 14 Jun 2001 Electrical Agilent 6890 Gas Chromatograph Service Manual Modular Input Output MIO INET ET Input connector Pin Function In Out 1 IN1 INPUT 2 IN2 INPUT INET Output connector Pin Function In Out 1 OUT1 OUTPUT 2 OUT2 OUTPUT IN1 IN2 OUT1 no pin OUT2 ...

Page 690: ...ical Agilent 6890 Gas Chromatograph Service Manual External Connectors 6890A and 6890 Plus 1210 Modular Input Output MIO LAN Modular Input Output MIO LAN 10 Base 2 BNC thin coaxial 10 Base T RJ45 unshielded twisted pair cable ...

Page 691: ... tray 14 of 14 Jun 2001 Electrical Agilent 6890 Gas Chromatograph Service Manual Sampler injector or tray Injector or tray Pin Function A1 A2 A3 A4 A5 A6 A7 A8 B1 B2 B3 B4 B5 B6 B7 B8 RXD CTS DSR RESET GND VAC1 GND VAC2 TXD RTS DTR GND GND VAC1 GND VAC2 A1 A8 B1 B8 ...

Page 692: ...T B C D R S 2 3 2 R E M O T E LAN 1 2 3 4 5 6 7 8 9 10 Number Description Connector 1 Sampler 1 Communications and power for the front injection tower P4 2 Sampler 2 Communications and power for the back injection tower P5 3 Tray Communications and power for the sample tray P6 4 Signal 1 Analog output for integrators or A D converters J1 5 Signal 2 Analog output for integrators or A D converters J...

Page 693: ...and tray connections S A M P L E R 2 T R A Y S I G 1 S I G 2 E V E N T B C D R S 2 3 2 R E M O T E LAN S A M P L E R 1 S A M P L E R 1 SAMPLER1 usually front SAMPLER2 usually back TRAY serves both samplers Injector or tray Pin Function A1 A2 A3 A4 A5 A6 A7 A8 B1 B2 B3 B4 B5 B6 B7 B8 RXD CTS DSR RESET GND VAC1 GND VAC2 TXD RTS DTR GND GND VAC1 GND VAC2 A1 B1 A8 B8 ...

Page 694: ...al 2 analog out Signal 1 Signal 2 analog out Figure 1215 3 Analog signal connections S A M P L E R 2 T R A Y S I G 1 S I G 2 E V E N T B C D R S 2 3 2 R E M O T E LAN S A M P L E R 1 S A M P L E R 1 S I G 1 SIG 1 SIG 2 J1 J2 Analog out Pin Function 1 1 mV COM 2 1 V 10 V COM 3 1 mV 4 1 V 5 Chassis GND 6 10 V 5 1 2 6 3 4 ...

Page 695: ...a Network LAN 4 of 10 Jun 2001 Electrical Agilent 6890 Gas Chromatograph Service Manual Local Area Network LAN Figure 1215 4 LAN connection S A M P L E R 1 S A M P L E R 2 T R A Y S I G 1 S I G 2 E V E N T B C D R S 2 3 2 R E M O T E LAN LAN ...

Page 696: ... E R 2 T R A Y S I G 1 S I G 2 E V E N T B C D R S 2 3 2 R E M O T E LAN S A M P L E R 1 S A M P L E R 1 S I G 1 S I G 1 R S 2 3 2 JP1 RS 232 Pin Function 1 DCD 2 RxD 3 TxD 4 DTR 5 GND 6 DSR 7 RTS 8 CTS 9 unused 1 6 Transmitters Receivers 5 9 RS 232 Standard wiring 3 TxD 7 RTS 4 DTR 2 RxD 8 CTS 6 DSR 1 DCD 5 GND 1 2 3 4 5 6 7 8 9 RS 232 Loop back wiring RS 232 ...

Page 697: ...nnected to the SC26C92 Not currently used Request to Send is set ON when the 6890 GC to the host when HARDWARE flow control set If flow control is configured for XON XOFF or NONE RTS will stay ON If HARDWARE handshake is configured RTS is used to inform the host that the 6890 GC is ready to communicate and there is room in the data buffer for data RTS will follow the same logic as XON XOFF for pac...

Page 698: ...ies Ready high System is ready for next analysis Receiver is any sequence controller Stop low Request to reach system ready state as soon as possible for example stop run abort or finish and stop injection Receiver is any module performing runtime controlled activities S A M P L E R 2 T R A Y S I G 1 S I G 2 E V E N T B C D R S 2 3 2 R E M O T E LAN S A M P L E R 1 S A M P L E R 1 S I G 1 R E M O ...

Page 699: ... analysis is maintainedbysignal readinessREADY for next analysis followed bySTART of run andoptional STOP of run triggeredon therespective lines In addition PREPARE and START REQUEST may be issued The signal levels are defined as standard TTL levels 0 V is logic true 5 V is logic false Input Load 2 2 kOhm against 5 V Output type is open collector Prepare Start Stop H H H Waiting for Ready System R...

Page 700: ... Out 2 75 mA output 6 3 GND 4 GND 5 Contact 1 48V ac dc 250 mA 7 6 Contact 1 7 7 Contact 2 48V ac dc 250 mA 8 8 Contact 2 8 9 Chassis GND 24V Current limited R88 R87 11 U113 037 035 R207 R201 287 R208 R208 036 038 10 1 V24_OUT1 2 V24_OUT2 3 GND 4 GND 5 CONTACT_IN1 7 CONTACT_IN2 6 CONTACT_OUT1 8 CONTACT_OUT2 U5 5 U5 6 K2 Relay K3 Note The 24V OUT1 and 24V OUT2 signals are shown on the same circuitr...

Page 701: ...nputs Figure 1215 9 BCD input connection S A M P L E R 1 S A M P L E R 2 T R A Y S I G 1 S I G 2 E V E N T B C D R S 2 3 2 R E M O T E LAN BCD Pin Function Maximum rating 1 Relay 48 V AC DC 250 mA 2 Relay 48 V AC DC 250 mA 3 LS digit 0 4 LS digit 1 5 LS digit 2 6 LS digit 3 7 MS digit 0 8 GND Shield Chassis GND 1 2 3 5 6 8 ...

Page 702: ... supplies 24V 24V 15V 15V 5V and to test the ground The test pads are located on the main board as shown below Figure 1220 1 Mainboard test pads TP14 GND TP13 GND TP9 15V TP10 15V TP 5V TP11 24V Oven Access Cutout General specifications Supply tol Rated I FL System PARD V pp 24 24 15 15 5 40 10 10 5 5 2 10 4 75 A 0 75 A 0 40 A 0 30 A 4 5 A 11 25 A 1 V 1 V 250 mV 250 mV 150 mV 1 J8 Hole for Xfmr ca...

Page 703: ...diagnostic purposes These connectors are shaded on the diagram below These connectors areusedforcommunicationswithintheinstrument All connector pinout drawings are viewed from the component side of the board Figure 1220 2 Main board connectors Hole for Xfmr Oven Access Cutout Beeper P11 P1 P2 P12 P13 P17 GND P15 DSP CPU GND 4 ROM Sockets 3V Lithium battery Gate Array P16 P21 P22 P3 J1 J2 JP2 J4 J6...

Page 704: ...or 17 FRONT DET HEATER 2 Ground 18 BACK DET HEATER P18 Inlet fan oven flap oven cryo 19 FRONT INJ 24V VALVE 1 Oven Flap Drive WHITE 20 BACK INJ 24V VALVE 2 Oven Flap Drive BLACK P22 Valve box Aux heated zones 3 Oven FLAP 24 V WHT BLU 1 AUX 1 SENSOR 4 Oven FLAP 24 V WHT BLK 2 AUX 2 SENSOR 5 Oven Flap Drive BLUE 3 HEATER GND 6 Oven Flap Drive RED 4 HEATER GND 7 Inlet Fan 24 V ORANGE 5 24 Volts 8 Inl...

Page 705: ...90 Gas Chromatograph Service Manual Table 1220 1 Main Circuit Board Pinouts continued J8 ALS Interfaceboard 1 5V 2 15V 3 5 4 DSRB 5 GND 6 5V 7 GND Connects to 8 NC G2612 60510 9 GND 6890 ALS Controller Bd 10 GND cable 11 GND 12 GND 13 APG 1 14 NC 15 RXD 16 15V 17 TXD 18 DTR 19 CTS 20 RTS 20 19 1 2 ...

Page 706: ... 1220 Fuses Fuses There are four identical glass fuses on the main board Table 1220 2 Replaceable fuses on the AC power board I D Description System Power Rating Part no F1 Glass Type F Zone 8A 250 V 2110 0036 F2 Glass Type F Zone 8A 250 V F3 Glass Type F 24 Volt 8A 250 V F4 Glass Type F 24 Volt 8A 250 V ...

Page 707: ... Board 6890A and 6890 Plus Circuitry diagrams 6 of 10 Jun 2001 Electrical Agilent 6890 Gas Chromatograph Service Manual Circuitry diagrams Figure 1220 3 Main board connector circuitry unregulated power supplies ...

Page 708: ...7 of 10 Jun 2001 Electrical Agilent 6890 Gas Chromatograph Service Manual Main Board 6890A and 6890 Plus 1220 Circuitry diagrams Figure 1220 4 Inlet fan oven flap oven cryo circuitry ...

Page 709: ...1220 Main Board 6890A and 6890 Plus Circuitry diagrams 8 of 10 Jun 2001 Electrical Agilent 6890 Gas Chromatograph Service Manual Figure 1220 5 Valve driver circuitry GROUND VALVE_3c GATE THRSH ...

Page 710: ... 10 Jun 2001 Electrical Agilent 6890 Gas Chromatograph Service Manual Main Board 6890A and 6890 Plus 1220 Circuitry diagrams Figure 1220 6 Heater driver circuitry GROUND HTRPWR_FRNT 6 INJ_FRNTc lnOVC_FAULT ...

Page 711: ...1220 Main Board 6890A and 6890 Plus Circuitry diagrams 10 of 10 Jun 2001 Electrical Agilent 6890 Gas Chromatograph Service Manual ...

Page 712: ...t points on the G1530 60200 main board are shown in Figure 1225 1 Some additional parts are included to assist in locating the test points Figure 1225 1 Main board test points and battery 6890N 24V 15V GND 24V 15V 5V 10V REF GND P2 F4 F5 10 V test point Ground 24V 10 15V 5 5V 2 24V 10 15V 5 GND Main test point group Battery ...

Page 713: ...itry is operating If the instrument appears dead and there is no 24 V voltage 1 Check AC power 2 Check fuses at F4 and F5 If thermal shutdown occurs or if the detectors are not working 1 Check the 15 V voltage If not present A D functionality will not work 2 Unplug the detectors and the EPC board 3 Recheck the 15 V voltage If it returns the problem may be in the detector or EPC board ...

Page 714: ...al Agilent 6890 Gas Chromatograph Service Manual Main Board 6890N 1225 Connectors Connectors Figure 1225 2 Main board connectors 6890N 24V 15V GND 24V 15V 5V 10V REF GND P2 F4 F5 P11 P12 P13 P1 P2 P21 P3 P22 P18 J7 P16 P19 P17 ...

Page 715: ...oor 17 FRONT DET HEATER 2 Ground 18 BACK DET HEATER P18 Inlet fan oven flap oven cryo 19 FRONT INJ 24V VALVE 1 Oven Flap Drive WHITE 20 BACK INJ 24V VALVE 2 Oven Flap Drive BLACK P22 Valve box Aux heated zones 3 Oven FLAP 24 V WHT BLU 1 AUX 1 SENSOR 4 Oven FLAP 24 V WHT BLK 2 AUX 2 SENSOR 5 Oven Flap Drive BLUE 3 HEATER GND 6 Oven Flap Drive RED 4 HEATER GND 7 Inlet Fan 24 V ORANGE 5 24 Volts 8 In...

Page 716: ...uses There are three replaceable fuses Figure 1225 3 Fuse locations G1530 90200 I D Description System Power rating Part no F3 Ceramic Autosampler 5A 250V 2110 0709 F4 Glass Type F 24 Volt 8A 250 V 2110 0036 F5 Glass Type F 24 Volt 8A 250 V 2110 0036 24V 15V GND 24V 15V 5V 10V REF GND P2 F4 F5 F3 F4 F5 ...

Page 717: ...1225 Main Board 6890N Fuses 6 of 6 Jun 2001 Electrical Agilent 6890 Gas Chromatograph Service Manual ...

Page 718: ...eramic fuses on the AC power board Oven shroud assembly These three components are explained in the following topics Voltage 10 5 Frequency Hz Maximum power consumption VA Power line requirement Oven type 120 V 48 66 2 250 20 amp dedicated receptacle Regular 200 V 48 66 2 950 15 amp dedicated receptacle Fast heating 208 V 48 66 2 950 15 amp dedicated receptacle Fast heating 220 V 48 66 2 950 15 am...

Page 719: ...es Table 1230 2 Line Voltage Configuration Plugs P8 on AC board by Power Option and Diagram of Pinouts from the Top of the Plug Ceramic fuses The two ceramic oven heater fuses on the AC power board F1 F2 will be one of two types depending on the line voltage One for the 120 V power option One for all other power options These fuses should always be replaced as a pair Power option Fuse rating 120 V...

Page 720: ...lace the entire shroud assembly See Replacing the oven shroud assembly in the Oven and Temperature Control chapter for more details Table 1230 3 Part Numbers for Oven Shrouds and Configuration Plugs Regular oven shrouds Voltage Shroud part no Configuration plug part no 120 V G1530 61610 G1530 60690 230 V G1530 61670 G1530 60720 Fast ramping oven shrouds Voltage Shroud part no Configuration plug pa...

Page 721: ...l other power options When replacing both the glass and ceramic fuse types always replace them in pairs Table 1230 4 Replaceable Fuses on the AC Power Board I D Description System Power rating Part no F1 Ceramic Type F Oven heater 120 V systems 20A 250 V 200 V 240 V systems 15A 250 V 2110 0098 2110 0054 F2 Ceramic Type F Oven heater 120 V systems 20A 250 V 200 V 240V systems 15A 250 V 2110 0098 21...

Page 722: ... from the component side of the board Figure 1230 1 AC power board overlay part no G1530 60050 F3 F4 S1 P2 C2 F2 F1 K1 P6 P5 P10 P3 P4 T1 P9 J1 P8 P7 C1 P1 Main power fuses Oven triac connectors Line 2 Neutral White Blue Line1 Black Brown Oven fan connector Configuration jumper plug Transformer connector Oven heater connectors Main board interface connector On some AC power boards the oven triac i...

Page 723: ...Orange 3 Transformer 100A Black Yellow 4 Transformer 120A Black 5 NC NC 6 Transformer 0B Black Green 7 Transformer 100B Black Blue 8 Transformer 110B Black White 9 Transformer 120B Black Red P7 Oven fan connector Motor assembly Pin Function Wire color 1 NC NC 2 Fan Yellow 3 Fan Blue 4 Oven Fan Brown 5 MT1 Fan White 6 Fan Orange P9 Main board interface connector Pin Function 1 Oven relay 2 Oven tri...

Page 724: ...VAC Fast acting 3AG p n 2110 0036 Glass body LN2 Neutral Line voltage Oven circuit Fuse rating p n 120 V 200 240V 20A 250 VAC 15A 250 VAC 2110 0098 2110 0054 All fuses 3AB IEC 127 TYPE F fast acting Ceramic Body Line 1 Black Brown AC LINE INPUT Line 2 Neutral White Blue Primary circuits Secondary circuits Main board interface PS Oven fly Oven triac 24V Oven triac Oven fly Secondary circuits Primar...

Page 725: ...R_120A XFRMR_08 XFRMR_100B XFRMR_110B XFRMR_120B BLK OV BLK ORN100V BLK YEL120V BLK GRNOV BLK BLU100V BLK WHT BLK RED 110V 120V 14 1 2 3 FAN_YELLOW FAN_BLUE OVN FAN_BRN MT1 FAN_WHT FAN_ORANGE YELLOW BLUE BROWN WHITE ORANGE LINE VOLTAGE CONFIGURATION CONNECTOR shown configured for 120 VAC operation VIOLET GRAY WHITE ORANGE YELLOW BLUE YELLOW POWER TRANSFORMER ASSEMBLY Secondaries Violet Orange Heat...

Page 726: ...e oven heater leads P3 P4 from the AC power board 3 Use an ohmmeter to measure resistance at the connectors Acceptable resistance ranges in ohms are given below Acceptable resistances range from the nominal value for a new cold heater to 5 from the nominal value Note Resistance goes up approximately 3 after heating the coil Table 1230 5 Resistances of the Heater Coil Nominal cold heater resistance...

Page 727: ...1230 Power Supply Testing resistance of the heater coil 10 of 10 Jun 2001 Electrical Agilent 6890 Gas Chromatograph Service Manual ...

Page 728: ... Chromatograph Service Manual 1240 Wiring Harnesses This section covers wiring harnesses in the 6890 gas chromatograph The following wiring harnesses are described Inlet Detector harness Auxiliary Zone Valve Box harness PTV TC PCB cable assembly ...

Page 729: ...anual split splitless inlet Wire color Pin on P21 Signal name Destination and Pin Black 1 Sensor GND FI 3 2 Sensor GND BI 3 3 Sensor GND FDI 3 4 Sensor GND BDI 3 Green 5 Heater GND FI 4 6 Heater GND BI 4 7 Heater GND FD 4 8 Heater GND BD 4 Yellow 9 24 Volts FV 1 10 24 Volts BV 1 Violet 11 Frnt Inj Sense FI 2 Gray w 12 Back Inj Sense BI 2 Violet stripe 13 Frnt Det Sense FD 2 Gray 14 Back Det Sense ...

Page 730: ...h Service Manual Wiring Harnesses 1240 Inlet Detector harness G1530 60640 Figure 1240 1 Inlet Detector wiring harness view from top of GC G1530 60640 2 1 BV 3 1 4 2 BI 3 1 4 2 BD 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 2 1 FV 3 1 4 2 3 1 4 2 FI FD ...

Page 731: ...he right side of the GC above the main board It powers the valve actuator drivers and two auxiliary heater sensors Wire color Pin on P21 Signal name Destination and Pin Violet 1 Aux 1 Sense A1 2 2 Aux 2 Sense A2 2 Green 3 Heater GND A1 4 4 Heater GND A2 4 Yellow 5 24 Volts V1 1 6 24 Volts V2 1 7 24 Volts V3 1 8 24 Volts V4 1 Black 9 Sensor GND A1 3 10 Sensor GND A2 3 Red 11 Aux 1 Heater A1 1 Orang...

Page 732: ...romatograph Service Manual Wiring Harnesses 1240 Auxiliary Zone Valve Box Harness G1530 60660 Figure 1240 2 Auxiliary Zone Valve Box wiring harness G1530 60660 3 1 4 2 3 1 4 2 2 1 2 1 2 1 2 1 A2 A1 V1 V2 V3 V4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 ...

Page 733: ... Jun 2001 Electrical Agilent 6890 Gas Chromatograph Service Manual PTV TC PCB Cable Assembly The PTV TC PCB Cable Assembly connects the PTV TCB to the PTV inlet heater sensor cable and to the valve and power connectors on the inlet detector wiring harness ...

Page 734: ...temperature sensor resistances by heater temperature C 0 10 20 30 40 50 60 70 80 90 100 0 100 00 103 90 107 79 111 67 115 54 119 40 123 24 127 07 130 89 134 70 138 50 100 138 50 142 28 146 06 149 82 153 57 157 32 161 04 164 76 168 47 172 16 175 84 200 175 84 179 51 183 17 186 82 190 46 194 08 197 70 201 30 204 88 208 46 212 03 300 212 03 215 58 219 13 222 66 226 18 229 69 233 19 236 67 240 15 243 ...

Page 735: ...1240 Wiring Harnesses Temperature sensor resistance 8 of 8 Jun 2001 Electrical Agilent 6890 Gas Chromatograph Service Manual ...

Page 736: ...1300 Illustrated Parts Breakdown Illustrations and part numbers for the components that make up the 6890 instrument 1310 Inlets 1320 Detectors 1330 Covers 1340 Oven 1350 Valves 1360 Electrical ...

Page 737: ......

Page 738: ...odule Capillary Injection Port 0 to 30 psig Capillary Injection Port Sub Assembly 0 to 30 psig Purged Packed Inlet Purged Packed Inlet EPC Pneumatic Module Purged Packed Inlet Manual Pneumatic Module Packed Column Injection Port Supplies Programmable Cool On Column Capillary Inlet Programmable Cool On Column EPC Pneumatic Module Programmed Temperature Vaporization Inlet Programmed Temperature Vapo...

Page 739: ...gelok back ferrule 1 8 inch brass 10 pkg 5180 4115 1 13 Swagelok front ferrule 1 8 inch brass 10 pkg 5180 4109 1 14 Screw M4 x 12 mm Torx T 20 Captive 1390 1023 3 15 Inlet weldment G1544 80570 1 16 Heater Sensor assembly G1544 61140 1 17 Screw M4 x 8 mm Torx T 20 chromeplated 0515 2711 3 18 Top insulation G1544 00010 1 19 Washer 12 pkg 5061 5869 1 20 Thermal block G1544 20570 1 21 Block insulation...

Page 740: ...es and accessories catalog See the Column Liners table for more liners or the Agilent chemical analysis consumables and accessories catalog Two recommended liners are part no 5183 4647 deactivated splitliner and part no 5062 3587 deactivated splitless liner Order the Replacement Split Vent Trap kit part no G1544 60610 to replace the Split vent trap assembly part no G1544 80500 ...

Page 741: ...ess inlet 4 of 36 Jun 2001 Illustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Figure 1310 1 Split Splitless Inlet 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 19 20 18 21 32 33 22 23 24 25 26 27 29 30 31 17 ...

Page 742: ...G1544 60540 0 to 150 psig For diagram of screw and O ring placement in pneumatic modules see Figure 1310 7 on page 15 of this section Description Part no Qty Single taperlinerwithglasswoolpacking deactivated recommended 5062 3587 1 Single taper liner without glass wool packing deactivated 5181 3316 1 Split Splitless liner 19251 60540 1 Split liner deactivated recommended 5183 4647 1 Description Pa...

Page 743: ...t splitless inlet EPC pneumatic module 6 of 36 Jun 2001 Illustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Figure 1310 2 Split Splitless inlet EPC pneumatic module 1 2 3 4 5 Rear view Front view ...

Page 744: ...PIP manifold assy 0 to 100 psi with inlet G1543 60500 1 5 Spacer pressure gauge 19243 40010 2 6 Screw M4 25 mm Torx T 20 0515 2712 2 7 Screw M4 12 mm Torx T 20 0515 2496 12 8 Flow cover G1530 01240 1 9 S SL manifold assy 0 to 30 psi G1544 60500 1 10 Nut hex w lkwr 0535 0043 2 11 Reg Gauge assy order part no G1577A 19246 60640 1 12 Chemical trap bracket 05890 00810 1 13 Screw machine flat head M4 1...

Page 745: ...r assembly 8 of 36 Jun 2001 Illustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Pneumatic carrier assembly Figure 1310 3 Pneumatic carrier assembly 5 3 4 15 6 12 1 2 7 5 3 9 10 11 13 8 14 See Page 9 see Pg 17 ...

Page 746: ...43 80550 2 4 Purge pressure regulator septum 19246 60530 1 5 Vent tube weldment 19244 80580 1 6 Pressure gauge spacer 19243 40010 1 7 Pressure gauge 0 to 30 psi 19320 60655 1 8 Gauge jumper weldment 19243 80555 1 9 Backpressure regulator 0 to 30 psi 19246 60570 1 10 Mass flow controller 0 to 400 mL min 19362 60575 1 11 Chemical trap assembly 05890 80710 1 12 Solenoid valve cable assembly G1544 605...

Page 747: ...ss inlet manual pneumatic module 10 of 36 Jun 2001 Illustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Figure 1310 4 Split Splitless inlet manual pneumatic module 13 14 11 C 1 2 3 12 4 5 6 7 8 9 10 15 S P ...

Page 748: ... Column nut 5181 8830 2 pk 5 Gold plated seal 18740 20885 1 6 Septum nut assembly 18740 60835 1 7 Vent torque plate 19244 00030 1 8 Purge regulator 19246 60530 1 9 Insert assembly series II 19251 60575 1 10 Washer flat SS 5061 5869 12 pk 11 11 mm Solsept Order no 5182 0739 50 pkg 12 Ferrule no hole 5181 7458 1 13 Cap top insulation G1544 00010 1 14 Flow controller inlet fitting replacement 0100 15...

Page 749: ...nlet weldment G1543 80580 1 13 Top gasket insulation not shown G1543 00155 1 14 Thermal block G1543 20765 1 15 Bottom nut G1543 20580 1 16 PPIP insulation G1543 00030 1 17 PPIP bottom insulation G1543 00070 1 18 Glass insert pkg 25 5080 8732 1 19 Vespel ferrule pkg 10 5080 8774 1 20 Tubing nut 1 4 inch brass 5180 4105 10 pkg 21 530 µ Column liner see the Agilent chemical analysis consumables and a...

Page 750: ...ustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Inlets 1310 Purged packed inlet Figure 1310 5 Exploded diagram of the purged packed inlet 25 24 23 22 21 20 19 18 17 16 15 14 12 11 10 9 8 7 6 5 4 3 2 1 ...

Page 751: ...le Part no G1543 60500 For diagram of screw and O ring placement in pneumatic modules see Figure 1310 7 on page 15 of this section Description Part no Qty 1 1 8 inch Swagelok male connector SAE brass G1543 80030 1 2 Inlet fitting G1543 20610 1 3 Screw M4 45 mm Torx T 20 0515 2484 1 4 O rings 239 id order part no 5180 4182 12 pkg 1 5 PPIP EPC inlet manifold kit not shown G1543 65520 ...

Page 752: ... 6 Purged Packed inlet EPC pneumatic module Figure 1310 7 Serviceable parts drawing for any EPC pneumatic module 1 3 2 see drawing below Front view Rear view 5 Aluminum bracket Screws Supply fitting O ring Inlet split vent fitting Septum purge fitting Caution Aluminum bracket removed for clarity DO NOT completely remove the bracket during valve replacement ...

Page 753: ...o 100 psi 19361 60565 1 6 Flow module bracket 19245 00105 1 7 Septum purge regulator 19243 60650 1 8 Chemical trap assembly 05980 80710 1 9 M8 O ring ungreased 5180 4181 10 10 M8 plastic fitting 5181 3394 10 11 Vent torque plate 19244 00030 1 12 Hex nut 5 16 inch 2950 0203 1 NS Fitting MFC PPIP adapter G1543 20540 1 NS PPIP PCOC MNL EPC adapter assy G1545 80510 1 NS Blank label plate G1530 90705 1...

Page 754: ...ustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Inlets 1310 Purged packed inlet manual pneumatic module and inlet Figure 1310 8 Purged Packed inlet manual pneumatic module 4 5 6 12 11 10 9 8 2 3 2 7 1 ...

Page 755: ...dspace retainer nut 18740 60830 Merlin microseal 5181 8816 Nonpurging septum nut assembly for manual flow control only 19243 60570 2 Septa 11 mm OD no hole 5181 1263 25 pkg 3 Top insert weldment 19243 80570 4 Viton O rings 5080 8898 12 pkg 5 Vespel ferrules 5080 8774 10 pkg 6 Nut 1 4 inch brass 5180 4105 10 pkg 7 Liners without glass inserts 1 8 inch column liner 19243 80510 1 4 inch column liner ...

Page 756: ... Thru hole 5181 1260 25 pkg 10 Insert spring 19245 60760 1 11 Inserts identify by number of rings on insert Narrow bore insert 200 µ 1 silver ring 19245 20510 0 Wide bore insert 320 µ 5 silver rings 19245 20525 1 Megabore insert 530 µ 0 rings 19245 20580 1 Capillary Insert glass columns 3 silver rings 19245 20550 0 AL megabore 4 rings 19245 20780 0 250 µ bore insert 6 rings 19245 20515 1 12 T 20 s...

Page 757: ... column capillary inlet 20 of 36 Jun 2001 Illustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Figure 1310 9 Exploded diagram of the programmable cool on column inlet 16 6 17 18 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ...

Page 758: ...ig part no G1545 60500 For diagram of screw and O ring placement in pneumatic modules see Figure 1310 7 on page 15 of this section Figure 1310 10 Programmable cool on column pneumatic module Description Part no Qty 1 Male connect 1 8 inch Swagelok 0100 1346 1 2 Inlet block fitting G1543 20610 1 3 EPC valve replacement kit G1531 60610 1 4 Screws inlet block M3 12 mm not shown 0515 1084 1 2 Rear vie...

Page 759: ... mm Column ID 10 pk 5182 9768 0 32 mm Column ID 10 pk 5182 9769 0 53 mm Column ID 10 pk 5182 9770 11 Split nut for inlet adapters 5062 3525 1 12 Screws M3 0 5 3 mm 3 13 PTV insulation block G2617 20510 1 14 PTV septumless gang weldment G2617 80500 1 15 PTV septum gang FTG weldment G2618 80500 1 16 Replacement filter kit G1544 80530 1 17 PTV front trap assy G2617 80520 1 18 Trap nut G1544 20650 1 1...

Page 760: ...ent 6890 Gas Chromatograph Service Manual Inlets 1310 Programmed temperature vaporization inlet Figure 1310 11 Exploded diagram of the programmed temperature vaporization inlet 14 15 16 18 1 2 3 17 4 6 7 8 9 10 11 13 20 21 22 23 24 19 Septum head 12 25 ...

Page 761: ...ization inlet calibrated manifold assembly part no G2617 60500 For diagram of screw and O ring placement in pneumatic modules see Figure 1310 7 on page 15 of this section Description Part no Qty 1 PTV thermocouple PCB G2617 60010 1 2 PTV thermocouple PCB cable G2617 60505 1 3 Calibrated manifold assembly G2617 60500 1 4 Male connectors 1 8 inch Swagelok G1543 80030 2 5 Inlet fitting block G1543 20...

Page 762: ...6 Jun 2001 Illustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Inlets 1310 Programmed temperature vaporization inlet calibrated manifold assembly Figure 1310 12 PTV flow module 4 5 2 1 3 ...

Page 763: ...ed replacement level Figure 1310 13 PTV LCO2 cryo assembly Description Part no Qty 1 PTV LCO2 brazement valve to IP tube G2617 80510 1 2 PTV LCO2 valve bracket G2617 00010 1 3 CO2 cryo valve G1565 60545 1 4 Cap prot W O Flg 1401 0044 1 5 Scr mach 8 32 375 inch 2510 0102 2 6 1 8 inch male conn W O O ring G1543 80025 1 7 Gland seal LCO2 G1565 20590 1 8 TFE seal G1565 20840 1 2 3 1 ...

Page 764: ...19 00040 1 2 PTV LN2 supply tube G2619 20520 1 3 PTV CFO LN2 insulation cover G2619 00030 1 4 PTV LN2 cell inlet tube G2619 20510 1 5 Cryo valve G1566 60557 1 6 PTV inlet tube insulation G2619 00010 1 7 PTV solenoid bracket G2619 00020 1 8 PTV jumper cable G2619 60502 1 9 Nut 1 4 inch tubing SS 0100 0055 1 10 Connector 0100 0112 1 11 Connector male 0100 0208 1 12 1 4 inch ferrule set SST 0100 1827...

Page 765: ... SS 01080 83202 NS Male nut 1 16 inch 0100 0929 6 VI heater sensor assy G2319 60503 1 7 Heater block assy G2319 60507 1 8 VI insulation htr block G2319 20530 1 9 Pneumatic gang fitting assy G2319 60501 1 Contains Gen make up restrictor 19243 60540 1 O ring 0905 1014 1 Torx screw 1390 1024 2 Replacement filter kit G1544 80530 or 10 Filter trap assy not shown G2319 80530 1 11 RP filter G1544 80530 2...

Page 766: ... of 36 Jun 2001 Illustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Inlets 1310 Volatiles interface Figure 1310 15 VI manifold assembly 0 to 100 psig 3 1 2 3 4 5 6 7 8 9 11 12 14 13 ...

Page 767: ...ifold assembly part no G2319 60500 For diagram of screw and O ring placement in pneumatic modules see Figure 1310 7 on page 15 of this section Description Part no Qty 1 Male connectors 1 8 inch Swagelok G1543 80030 2 2 Screw M4 45 mm Torx T 20 0515 2484 1 3 Inlet supply fitting G1543 20510 1 4 Screw M3 20 mm Torx T 10 0515 1319 8 5 O rings under connectors and fitting 12 pkg 5180 4182 1 ...

Page 768: ...f 36 Jun 2001 Illustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Inlets 1310 Volatiles interface calibrated manifold assembly Figure 1310 16 Volatiles interface flow module 1 2 3 3A 4 ...

Page 769: ...al Installation and Operation G2399 90110 1 NS SVE Tri column assembly G2399 60520 1 NS Union SS 1 16 inch tubing 0100 0124 1 NS Chemical sample ECD kit 18713 20400 1 NS 1 16 inch tube SS 560 mm 18900 20400 1 NS Graphite ferrule 2 pk 5062 3505 2 pk 1 NS 320 µm graphite vespel ferrule 5062 9525 1 ea 1 NS 0 4 mm 200 250 µm ferrule 5062 9526 1 ea 1 NS Bleed column 50 µm 2M G2399 20510 1 NS Valve driv...

Page 770: ...33 of 36 Jun 2001 Illustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Inlets 1310 Solvent vapor exit accessory Figure 1310 17 Solvent vapor exit accessory 1 2 3 ...

Page 771: ... module part no G2317 65500 Figure 1310 18 Pneumatics control module Description Part no Qty 1 1 8 inch SwageLok male connector SAE brass G1543 80030 1 2 100 PSIG inlet supply fitting G1543 20510 1 3 Screw M4 45 mm Torx T 20 0515 2484 1 4 O rings 239 ID Order part no 5180 4182 12 pkg 1 NS PCM gang weldment G2319 80500 1 1 3 2 Front view Rear view 4 ...

Page 772: ...Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Inlets 1310 Pneumatics control module Figure 1310 19 Serviceable parts drawing pneumatic control module Aluminum bracket Screws Supply fitting O ring Septum purge fitting ...

Page 773: ...1310 Inlets Pneumatics control module 36 of 36 Jun 2001 Illustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual ...

Page 774: ...ins an illustrated parts breakdown for each of the following 6890 GC detectors and related components Electron Capture Detector ECD Flame Ionization Detector FID Nitrogen Phosphorus Detector NPD Thermal Conductivity Detector TCD Microcell Electron Capture Detector µECD Flame Photometric Detector FPD Auxiliary EPC flow block ...

Page 775: ...ECD new G1533 60730 Japan only ECD rebuilt G1533 69730 13 Detector block insulation G1533 00010 1 14 Lower seal insulation G1533 00080 1 15 Screw M4 12 mm Torx T20 0515 2496 1 16 ECD make up gas adapter weldment G1533 80565 1 Gigabore liner 19233 20625 End cap 19233 20755 17 Ferrules capillary columns 1 No hole plug graphitized vespel 5181 7458 1 Graphite 0 5 mm id 10 pkg 5080 8853 Graphite 1 0 mm...

Page 776: ...s Breakdown Agilent 6890 Gas Chromatograph Service Manual Detectors 1320 Electron Capture Detector ECD Figure 1320 1 Electron Capture Detector ECD 7 19 20 21 22 24 23 25 26 27 28 1 2 3 4 5 6 7 8 9 10 30 31 29 11 12 19 13 14 15 16 17 18 ...

Page 777: ...cription Part no Qty 1 EPC ECD manifold assembly G1533 60520 1 2 Non EPC ECD manifold assembly G1533 60500 1 3 Screw M3 25 mm Torx T10 0515 0683 6 4 Screw M3 5 8 mm Torx T10 0515 0655 2 5 ECD make up gas assembly Manual ECD G1533 60600 1 5A Pressure regulator 0 100 psi Manual ECD G1531 60630 1 5B ECD manifold regulator brazement Manual ECD G1533 80530 1 NS Chemical traps Manual ECD G1533 80540 2 ...

Page 778: ...001 Illustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Detectors 1320 Electron Capture Detector manifold assembly Figure 1320 2 Electron Capture Detector ECD manifold assembly 2 7 4 1 5 5B 5A ...

Page 779: ...15 1 17 FID signal board G1531 60010 1 18 FID interface board G1531 60020 1 19 Screw captive M4 20 mm Torx T20 1390 1024 4 20 Mounting pallet G1531 40020 1 21 Base spanner nut 19231 20990 1 22 Thermal strap G1531 00100 1 23 Jets 1 Packed column FID Capillary column 0 011 inch id 19244 80560 1 Packed column 0 018 inch id 18710 20119 High temp for use in simulated distillation 0 018 inch id 19244 80...

Page 780: ...Agilent 6890 Gas Chromatograph Service Manual Detectors 1320 Flame Ionization Detector FID Figure 1320 3 Exploded diagram of the Flame Ionization Detector 2 3 4 5 6 7 8 9 13 10 7 11 12 6A 14 15 16 17 18 29 30 31 25 28 27 26 24 23 14 22 21 20 1 19 ...

Page 781: ...05 1039 10 3 Screw M4 10 mm Torx T20 0515 2495 1 4 EPC control module assembly G1531 60520 1 5 Non EPC control module assembly G1531 60500 1 6 Screw M3 25 mm Torx T10 0515 0683 6 7 Screw M3 8 mm Torx T10 0515 0655 2 8 Make up gas manual forward pressure regulator assembly G1531 60570 1 8A Pressure regulator 0 to 100 psi G1531 60630 1 8B FID manifold regulator brazement G1531 80520 1 8C Supply gas ...

Page 782: ...01 Illustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Detectors 1320 Flame Ionization Detector manifold assemblys Figure 1320 4 FID Manifold assembly 8 8B 4 8A 8C 1 2 3 5 7 6 Type 1 Type 2 6 9 ...

Page 783: ...0015 1 12 Screw M4 10 mm 0515 2495 2 13 NPD interconnect assembly G1534 60610 1 14 NPD signal board G1534 60010 1 15 NPD interface board G1534 60020 1 16 Pallet captive screws 1390 1024 4 17 O Rings HPM8 Order no 5180 4181 12 pkg 0905 1039 3 18 Screw M4 10 mm Torx T20 0515 2495 1 19 Mounting pallet G1531 40020 1 20 Jets 1 Packed column NPD Capillary column 0 011 inch id 19244 80560 1 Extended jet ...

Page 784: ...wn Agilent 6890 Gas Chromatograph Service Manual Detectors 1320 Nitrogen Phosphorus Detector NPD Figure 1320 5 Exploded diagram of the Nitrogen Phosphorus Detector 15 25 26 27 10 11 12 13 14 21 4 6 1 2 3 5 7 8 9A 9B 9D 9C 16 17 18 19 20 22 24 23 ...

Page 785: ...80 4181 12 pkg 0905 1039 9 3 Screw M4 x 6 mm Torx T20 0515 2832 1 4 EPC control module assembly G1534 60520 1 5 Non EPC control module G1534 60500 1 6 Screw M3 25 mm Torx T10 0515 0683 6 7 Screw M3 8 mm Torx T10 0515 0655 2 8 Make up Gas manual forward pressure regulator assembly G1531 60570 1 8A Pressure regulator 0 to 100 psi G1531 60630 1 8B NPD manifold regulator brazement G1531 80520 1 8C Sup...

Page 786: ...01 Illustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Detectors 1320 Nitrogen Phosphorus Detector manifold assembly Figure 1320 6 NPD manifold assembly Type 1 Type 2 1 2 3 5 7 8A 8B 8 8C 4 3 6 9 ...

Page 787: ...G1532 80540 1 8 inch nut 10 pkg 5180 4103 1 8 inch vespel ferrule graphitized 10 pkg 0100 1332 TCDpacked 1 8 inch Tubeto 1 4 inchFemale notshown G1532 20710 1 8 inch nut 10 pkg 5180 4103 1 8 inch vespel ferrule 10 pkg 0100 1332 9 Column ferrules Graphite 0 5 mm id 10 pkg 5080 8853 Graphite 1 0 mm id 10 pkg 5080 8773 10 Column nut 2 pkg 5181 8830 1 11 TCD signal board G1532 60015 1 12 Heater Sensor...

Page 788: ...trated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Detectors 1320 Thermal Conductivity Detector TCD Figure 1320 7 Exploded diagram of the Thermal Conductivity Detector 11 12 13 14 1 2 3 5 4 6 7 8 9 10 15 16 ...

Page 789: ...8 Order no 5180 4181 12 pkg 0905 1039 9 3 Screw M4 6 mm Torx T20 0515 2832 2 4 EPC control module assembly G1532 60720 1 5 Non EPC control module assembly G1532 60500 1 6 Screw M3 8 mm Torx T10 0515 0655 2 7 Make up gas manual forward G1532 60530 1 pressure regulator assembly 7A Pressure regulator 0 to 100 psi G1531 60630 1 7B TCD Manifold regulator brazement G1532 80530 1 8 TCD 3 Way switching va...

Page 790: ...1 Illustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Detectors 1320 Thermal Conductivity Detector manifold assembly Figure 1320 8 TCD manifold assembly 1 2 3 5 3 7 7B 7A 3 3 4 6 8 Type 1 Type 2 9 ...

Page 791: ...97 69900 13 ECD block insulation G1533 00010 1 14 ECD seal insulation G1533 00080 1 15 Screw M4 12 mm Torx T20 0515 2496 1 16 ECD make up gas adapter weldment assembly G2397 80520 1 Gigabore liner G2397 20540 End cap 19233 20755 17 Ferrules capillary columns 1 No hole plug graphitized vespel 5181 7458 Graphite 0 5 mm id 10 pkg 5080 8853 Graphite 1 0 mm id 10 pkg 5080 8773 18 Capillary column nut 2...

Page 792: ...6890 Gas Chromatograph Service Manual Detectors 1320 Microcell Electron Capture Detector µECD Figure 1320 9 Exploded diagram of the Microcell Electron Capture Detector 7 19 20 21 22 24 23 25 26 27 28 1 2 3 4 5 6 7 8 9 10 30 31 29 11 19 13 14 15 16 17 18 12 ...

Page 793: ...fold assembly Description Part no Qty Type 1 Manifold 1 O rings HPM8 0905 1493 13 2 Screw M4 8 mm Torx T20 0515 0910 1 3 EPC Micro ECD manifold assembly G2397 60550 1 NS Screw M3 25 mm Torx T10 0515 0683 8 NS Screw M3 5 8 mm Torx T10 0515 0655 2 4 ECD make up gas assembly G2397 20540 1 Chemical traps G1533 80540 2 Type 2 Manifold 5 Replacement EPC manifold assembly replaces either type G2397 60720...

Page 794: ...un 2001 Illustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Detectors 1320 Microcell Electron Capture Detector manifold assembly Figure 1320 10 µECD manifold assemblies 2 3 Type 1 Type 2 1 5 ...

Page 795: ... Spacer ignitor 19256 20590 1 7 Glow plug 0854 0141 1 8 Ignitor cable assembly G1535 60600 9 Gasket heat shield 19256 80040 1 10 Window first heat shield 19256 80030 1 11 Disk heat shield 19256 20580 1 12 Coupling stainless steel 19256 20550 1 13 Lockwasher 4 required 2190 0108 4 14 Screw M3 12 4 required 0515 0911 4 15 Clamp 19256 00090 1 16 O ring silicone 0 926 inch ID orange 0905 0955 1 17 Win...

Page 796: ...arts Breakdown Agilent 6890 Gas Chromatograph Service Manual Detectors 1320 Flame Photometric Detector FPD Figure 1320 11 Exploded diagram of the Flame Photometric Detector 1 1A 2 3 4 5 6 7 8 16 17 18 19 20 21 22 9 10 11 12 13 14 15 ...

Page 797: ...lies Description Part no Qty 1 O ring Kalrez transfer tube 0905 1101 1 2 Transfer tube 19256 80550 1 3 Gigabore liner ferrule assembly 19256 60590 1 4 Base assy weldment G1535 80510 1 5 Heater sensor assembly G1535 60620 1 6 Lower heater block 19256 20500 1 7 O ring Kalrez jet cartridge 0905 1103 1 8 Jet cartridge G1535 80500 1 9 Ferrule Vespel 1 4 inch ID Order no 5080 8774 0100 1061 1 10 Nut bra...

Page 798: ...Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Detectors 1320 Flame Photometric Detector jet and transfer tube assemblies Figure 1320 12 Exploded diagram of the jet and transfer tube assemblies 1 2 3 4 5 6 1 7 8 9 10 ...

Page 799: ...tric Detector PMT and bracket assemblies Description Part no Qty 1 Heater sensor assembly G1535 60610 1 2 Photomultiplier Tube PMT G1535 80050 3 O ring 0905 1099 4 PM tube and housing assembly 19256 60510 1 5 Main bracket G1535 00010 1 6 Chimney back G1535 00020 1 7 Chimney front G1535 00030 1 Filters 1 Sulfur mode not shown 19256 80000 Phosphorus mode not shown 19256 80010 ...

Page 800: ...llustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Detectors 1320 Flame Photometric Detector PMT and bracket assemblies Figure 1320 13 Exploded diagram of the PMT and bracket assemblies 5 1 6 7 3 4 2 ...

Page 801: ...ength FPD G1535 60555 Dual wavelength FPD not shown G1535 60565 2 Detector top cover single FPD not shown G1535 80550 1 2A Detector top cover dual FPDs G1535 80560 1 3 Electronics cover pan G1535 00120 1 4 Electronics top cover G1535 80540 1 Cover assembly 6890 GC not shown G1535 80520 1 5 Actuator solenoid bracket optional G1580 00070 6 Printed circuit board G1535 60010 1 Spring not shown 1460 11...

Page 802: ... Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Detectors 1320 Flame Photometric Detector covers manifolds and electronics Figure 1320 14 Exploded diagram of the FPD covers manifolds and electronics 3 4 5 6 7 8 2A 1 ...

Page 803: ...d dot 19231 60770 FID air brown dot 19231 60610 NPD HYD blue dot 19234 60660 Zero resistance tube brass tube G1570 20540 3 External flow restrictor 2 pk G1530 XXXXX 4 Replacement Aux EPC Manifold Type 2 kit replaces either type G1570 64000 1 NS O ring 239 inch part no 5181 3345 6 pk 0905 1014 3 NS Aux EPC manifold only assy Type 1 G1570 60520 NS Aux EPC kit G1570 60500 NS Aux EPC replacement kit G...

Page 804: ...reakdown Agilent 6890 Gas Chromatograph Service Manual 1330 Covers This section contains illustrated parts breakdowns for the following 6890 GC covers and related components Metal Covers Plastic Covers Manual Inlet Flow Manifold Carrier ...

Page 805: ...0470 1 3 Rear top panel G1530 00225 1 4 Rear bottom panel G1530 00035 1 5 Oven exhaust deflector optional G1530 80650 1 6 Inlet chassis PTV G2517 20550 7 Detector blank cover insul kit not shown G1530 67040 8 Inlet blank cover insul kit not shown G1530 67050 9 MIO INET blank cover plate not shown G1530 00610 10 Shipping container for 6890 GC mainframe not shown G1530 80075 11 Panel for ALS slots n...

Page 806: ...3 of 8 Jun 2001 Illustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Covers 1330 Metal covers Figure 1330 1 Exploded diagram of the metal exterior components 1 2 3 4 5 6 ...

Page 807: ...lectronics top cover G1530 40125 1 7 Left side cover G1530 40050 1 8 Screw M4 12 mm Torx T 10 1390 1023 10 9 Electronics side cover G1530 40115 1 10 3 inch hole plug 6960 0162 2 11 1 inch hole plug 6960 0163 2 12 1 1 2 inch hole plug 6960 0164 1 13 Circular plug label G1530 90870 4 14 Oval plug label G1530 90880 2 NS Injector mounting post 7683 07673 21140 1 NS Injector mounting post G2613A G2613 ...

Page 808: ...Jun 2001 Illustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Covers 1330 Plastic covers Figure 1330 2 Exploded diagram of the plastic exterior components 13 14 4 5 6 9 1 2 3 8 10 7 11 12 ...

Page 809: ...graph Service Manual Manual inlet flow manifold carrier G1585A accessory Description Part no Qty 1 Pneumatic carrier assembly G1530 60950 1 2 Screw M4 25 mm Torx T 20 0515 2712 2 3 Screw M4 12 mm Torx T 20 0515 2496 4 4 Chemical trap bracket 05890 00810 1 5 Screw M4 10 mm Torx T 20 flathead 0515 2725 2 6 Flow side cover G1530 01240 1 ...

Page 810: ... Jun 2001 Illustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Covers 1330 Manual inlet flow manifold carrier G1585A accessory Figure 1330 3 Manual inlet flow manifold carrier 1 3 2 4 6 5 ...

Page 811: ...1330 Covers Manual inlet flow manifold carrier G1585A accessory 8 of 8 Jun 2001 Illustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual ...

Page 812: ...Breakdown Agilent 6890 Gas Chromatograph Service Manual 1340 Oven This section contains illustrated parts breakdowns for the following 6890 GC components Oven Oven flapper assembly CO2 cryogenic cooling Liquid nitrogen cryogenic cooling ...

Page 813: ...0V Denmark Switzerland power 16 amp G1530 61650 230V Continental Europe power G1530 61650 240V Australia power G1530 61640 240V South Africa India power G1530 61640 240V Great Britain Ireland power G1530 61640 240V USA power G1530 61640 240V Australia power slow ramp G1530 61640 4 Screws M4 0 7 Torx T 20 chrome plated 0515 2711 4 5 Hex nut 0535 0043 3 6 Washer 2190 0712 6 7 Sensor door assembly G1...

Page 814: ...3 of 10 Jun 2001 Illustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Oven 1340 Oven assembly Figure 1340 1 Oven 9 5 6 8 10 2 3 4 1 12 13 11 7 ...

Page 815: ...0 Gas Chromatograph Service Manual Oven flapper assembly Part no G1530 60770 Description Part no Qty 1 Dual duct assembly G1530 80680 1 2 Flapper shaft assembly G1530 80560 1 3 Screw Torx T 20 M4 12 mm 0515 2496 4 4 Stepper motor assembly G1530 60940 1 5 Screw Torx T 10 M3 8 mm 0515 0655 2 ...

Page 816: ...5 of 10 Jun 2001 Illustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Oven 1340 Oven flapper assembly Figure 1340 2 Oven flapper assembly 1 3 4 3 5 2 ...

Page 817: ...Screw MS 8 32 312 LG 2510 0043 2 5 Cryo bracket G1565 00010 1 6 Gland seal LCO2 G1565 20590 1 7 CO2 cryo valve G1565 60545 1 8 CO2 cryo inline filter 3150 0602 1 9 CO2 inlet tube G1565 20600 1 10 Cryo blast restrictor weldment G1565 80590 1 11 LCO2 weldment G1565 80505 1 12 Clamp screw G1565 20560 1 NS Scr mach T 20 Torx M4 12 mm 0515 2496 2 NS TFE seal G1565 20840 1 NS CO2 cryogenic kit G1565 655...

Page 818: ...7 of 10 Jun 2001 Illustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Oven 1340 CO2 cryogenic cooling Figure 1340 3 CO2 cryogenic cooling 10 11 12 6 4 2 1 5 7 3 9 8 ...

Page 819: ... G1566 80535 1 2 Tee union brass 0100 0090 1 3 Connector male 0100 0208 1 4 Screw MS 8 32 312 LG 2510 0043 2 5 Cryo bracket G1565 00010 1 6 LN2 restrictor tube G1566 20575 2 7 N2 cryo valve G1566 60557 1 8 Liquid N2 nozzle 19310 20500 1 NS Scr mach T 20 Torx M4 12 mm 0515 2496 2 NS Tape Industrial 0460 0016 NS N2 cryo blast G1566 65507 NS N2 cryo VLV Dual blast assembly G1566 65508 NS N2 cryogenic...

Page 820: ...9 of 10 Jun 2001 Illustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Oven 1340 Liquid nitrogen cryogenic cooling Figure 1340 4 Liquid nitrogen cryogenic cooling 6 5 1 8 4 2 7 3 ...

Page 821: ...1340 Oven Liquid nitrogen cryogenic cooling 10 of 10 Jun 2001 Illustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual ...

Page 822: ... Chromatograph Service Manual 1350 Valves This section contains illustrated parts breakdowns for the following 6890 GC valves and related components Valve Box Assembly Valve Driver Assembly Valve Actuator Assembly Valco W series Minivalve Nickel Catalyst Assembly ...

Page 823: ...1580 00040 1 5 Hex nut insulation plate 0535 0025 2 6 Screw M3 30 mm Torx T 10 chromeplated htr blk 0515 2525 4 7 Heater block G1580 20520 2 8 Standoff valve box G1580 20500 2 9 Valve box bottom plate G1580 00010 1 10 Screw M3 8 mm Torx T 10 chromeplated 0515 2726 2 11 Heater Sensor harness cable clamp 1400 0015 2 12 Heater Sensor assembly G1580 61140 2 13 Cable tie strap not shown 1400 0249 4 14 ...

Page 824: ...3 of 14 Jun 2001 Illustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Valves 1350 Valve box assembly Figure 1350 1 Valve box assembly 1 2 3 4 5 6 7 8 9 10 11 12 1 1 ...

Page 825: ...r wiring harness G1530 60660 1 4 Pneumatic tubing 1 8 inch OD Teflon 0890 0746 8 5 Adapter fitting 10 32 1 16 inch hose barb 0100 1205 8 6 Standoff included with valves 8 7 4 way Solenoid valves G1580 61090 4 8 O ring with valves and end plate kit 10 9 Solenoid valve end plate kit 05890 61097 1 10 Screw skt hd cap 0515 1214 2 11 Elbow fitting 1 4 inch male 0100 1632 2 12 Exhaust tubing 1 4 inch OD...

Page 826: ...5 of 14 Jun 2001 Illustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Valves 1350 Valve driver assembly Figure 1350 2 Valve driver assembly 1 2 3 4 5 6 7 8 9 10 9 11 12 NO TAG ...

Page 827: ... assembly G1580 60660 1 2 Modified screw 19325 80030 2 3 Quick release pin 1480 0632 1 4 1 8 inch Hose fitting 10 32 1 16 inch ID hose barb 0100 1205 2 5 Teflon tubing 1 8 inch od order by the inch 42 inches for each actuator 0890 0746 6 36 Actuator limiter 18900 21000 1 7 End cap 19325 20680 1 8 Elbow fitting 10 to 32 0100 1220 1 9 Coupler Shaft assembly G1580 60640 1 NS Hex key 3 mm not shown 87...

Page 828: ...7 of 14 Jun 2001 Illustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Valves 1350 Valve actuator assembly 1 of 2 Figure 1350 3 Valve actuator assembly 1 of 2 7 8 4 5 1 2 3 4 5 6 9 ...

Page 829: ... 1 2 Socket head screw M4 x 8 mm 0515 0153 3 3 Link 19325 80010 1 4 Piston rod 19325 20650 1 5 Teflon tubing 1 8 inch o d x 42 inch for actuators 0890 0746 1 6 Hose fitting 0100 1205 2 7 O ring 0 239 inch ID 0905 0103 1 8 Actuator cylinder 19325 20630 1 9 Piston 19325 20640 2 10 O ring 1 046 inch ID 0905 0463 1 11 O ring 1 176 inch ID 0905 1405 1 12 Cylinder end cap 19325 20680 1 13 Elbow fitting ...

Page 830: ...4 Jun 2001 Illustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Valves 1350 Valve actuator assembly 2 of 2 Figure 1350 4 Valve actuator assembly 2 of 2 13 6 5 7 12 11 10 9 5 4 6 3 2 1 8 2 ...

Page 831: ...valve internal sample injector 0 2 µl 1000 psi Option 850 0101 0636 4 port valve internal sample injector 0 5 µl 1000 psi Option 852 0101 0637 4 port valve internal sample injector 1 0 µl 1000 psi Option 854 0101 0638 4 port valve internal sample injector 0 5 µl 5000 psi Option 856 0101 0639 2 Ferrule 0100 1022 3 Nut 0100 0791 4 Rotors General purpose valve rotors 6 port valve 225 C max 5181 7459 ...

Page 832: ...101 0956 0 5 0101 0282 0101 0957 1 0 0101 0299 0101 0954 2 0 0101 0300 0101 0955 5 0 0101 0301 10 0 0101 0302 Capillary tubing 0 031 inch x 0 063 inch od Stainless steel Nickel Length mm Part no Length mm Part no 318 18900 20260 525 18900 21110 559 18900 20300 1061 18900 21120 3658 5021 7199 2132 18900 21130 See the Agilent chemical analysis consumables and accessories catalog for more lengths 427...

Page 833: ...38 2 3 Nickel catalyst heater sensor assembly G1580 61160 1 4 Nickel catalyst H2 mix FTG weldment G1580 80500 1 5 Nickel catalyst heater block 18900 20835 1 6 Nut hex with lockwasher 0535 0043 2 7 Screws Torx T 20 M4 12 mm captive 1390 1023 3 8 Top cover plate G1543 00085 1 9 Top insulation G1543 00100 1 10 PPIP Insulation G1543 00030 1 11 PPIP Bottom insulation G1543 00070 1 12 Nut warmer insulat...

Page 834: ... 2001 Illustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Valves 1350 Nickel catalyst assembly Figure 1350 6 Nickel catalyst assembly 4 1 7 8 3 9 6 10 11 12 13 5 2 1 Top of oven Inside of oven ...

Page 835: ...1350 Valves Nickel catalyst assembly 14 of 14 Jun 2001 Illustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual ...

Page 836: ...ted parts breakdowns for the following 6890 GC electrical components AC Power Components AC Power Circuit Board Main Circuit Board 6890A and 6890 Plus Main Circuit Board 6890N Modular Input Output MIO Components Pneumatics Circuit Boards Analog Input Board G1556A Accessory LAN Board 6890N Chassis Fans ALS Interface Board G2612A Accessory ...

Page 837: ...k 230V 16A G1530 67503 Switzerland power cable 230V 10A G1530 67500 Denmark 230V 10A G1530 67502 Continental Europe 230V G1530 60880 Australia 240V G1530 60910 South Africa India 240V G1530 67501 United Kingdom Ireland 240V G1530 60890 USA and Canada 240V G1530 60900 Australia 240V G1530 61170 5 AC control cable G1530 60760 1 6 On Off rod G1530 40010 1 7 Hex nut lock washer 0535 0043 1 8 Hexbolt M...

Page 838: ...3 of 16 Jun 2001 Illustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Electrical 1360 AC Power components Figure 1360 1 AC Power components 1 2 3 4 5 6 7 8 9 10 11 ...

Page 839: ...0 Australia 240V slow ramp G1530 60730 4 Mounting screw M4 25 mm Torx T 20 0515 2712 1 5 Fuses not shown 2 Fuse 20A 250V USA and Canada 120V 2110 0098 Fuse 15 amp Japan 200V 2110 0054 Fuse 15 amp Cont Eur 220V single phase 2110 0054 Fuse 15 amp Hong Kong 220V single phase 2110 0054 Fuse 15 amp China 220V 2110 0054 Fuse 15 amp China 220V slow ramp 2110 0054 Fuse 15 amp Israel 220V 2110 0054 Fuse 15...

Page 840: ...5 of 16 Jun 2001 Illustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Electrical 1360 AC Power circuit board Figure 1360 2 AC Power circuit board 1 7 6 3 5 4 2 ...

Page 841: ...d 6890 Plus Only ROM sockets 0 and 1 are used ROM G1530 80906 Socket 0 ROM G1530 80926 Socket 1 Description Part no Qty 1 Main board assembly G1530 60011 1 2 Hex screw self tapping 0624 0665 3 3 Grounding screw M4 25 mm Torx T 20 0515 2712 2 4 Glass fuse type F 8A 250V 2110 0036 4 5 Battery 3V 1420 0523 1 6 ROM kit rev A 03 08 G1530 61706 1 7 ROM puller not shown 8710 2303 ...

Page 842: ... Illustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Electrical 1360 Main circuit board 6890A and 6890 Plus Figure 1360 3 Main circuit board 6890A and 6890 Plus 1 2 3 4 5 ROM Socket 1 ROM Socket 0 ...

Page 843: ...lent com Figure 1360 4 Main circuit board 6890N Description Part no Qty 1 Main board assembly G1530 62000 1 2 Hex screw self tapping 0624 0665 3 3 Grounding screw M4 25 mm Torx T 20 0515 2712 2 4 Glass fuse type F 8A 250V 2110 0036 2 5 Ceramic fuse E 5A 250V F 2110 0709 1 6 Battery 3V 1420 0523 1 NS Connector plate 6890N G1530 01320 1 24V 15V GND 24V 15V 5V 10V REF GND P2 F4 F5 1 2 4 3 3 2 2 5 6 ...

Page 844: ...cription Part no Qty 1 INET MIO card assy G1553 60015 1 2 MIO support bracket G1530 00320 1 3 MIO connector assy G1553 60100 1 4 Support bracket standoff M3 male female G1530 20570 1 5 Screw Torx T 10 M3 6 mm 0515 0680 1 6 Screw Torx T 20 M4 12 mm 0515 2496 3 7 5 Meter HP IL cable not shown 82167 60003 1 8 INET cover plate G1530 00610 1 Description Part no Qty 1A LAN card assy J2552B J2552 69013 1...

Page 845: ...al Modular input output MIO components 6890A and 6890 Plus 10 of 16 Jun 2001 Illustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Figure 1360 5 Modular Input Output MIO components 1 1A 2 3 4 6 5 ...

Page 846: ...al Electrical 1360 Pneumatics circuit boards Pneumatics circuit boards Description Part no Qty 1 EPC pneumatics board assembly for 6890A and 6890 Plus for 6890N G1575 60010 G1530 60015 1 2 EPC pneumatics board metal carrier included with replacement EPC board 1 3 Screw Torx T 20 0515 2496 3 ...

Page 847: ...1360 Electrical Pneumatics circuit boards 12 of 16 Jun 2001 Illustrated Parts Breakdown Agilent 6890 Gas Chromatograph Service Manual Figure 1360 6 Pneumatics circuit boards 3 2 1 ...

Page 848: ... Gas Chromatograph Service Manual Electrical 1360 Analog input board G1556A accessory Analog input board G1556A accessory Figure 1360 7 Analog input board Description Part no Qty 1 Analog input PCB G1556 60010 1 2 GP analog output cable assy G1553 60560 1 1 2 ...

Page 849: ...re 1360 8 LAN board 6890N Description Part no Qty 1 LAN replacement kit 6890N G1530 62010 1 2 LAN patch cable 8121 0600 1 3 Connector 10BASE T LAN 1252 6152 1 4 Connector plate 6890N G1530 01320 1 1 2 3 S A M P L E R 1 S A M P L E R 2 T R A Y S I G 1 S I G 2 E V E N T B C D R S 2 3 2 R E M O T E LAN 4 LAN board assembly removed from main board ...

Page 850: ...down Agilent 6890 Gas Chromatograph Service Manual Electrical 1360 Chassis fans Chassis fans Chassis fans Figure 1360 9 Chassis fans Description Part no Qty 1 Replacement pneumatics area fan G1530 60550 1 2 Inlet fan assembly G1530 60510 1 1 2 ...

Page 851: ...hromatograph Service Manual ALS interface board G2612A accessory 6890 Plus only Figure 1360 10 ALS Interface board Description Part no Qty 1 ALS interface board G2612 60010 1 2 6890 ALS controller bd cable G2612 60510 1 3 Screw Tpg 6 19 0624 0403 2 NS Installation instructions G2612A G2612 90195 NS Label GC door G2612 90700 1 1 2 3 ...

Page 852: ...rcoal trap 520 8 Active element NPD Replacement 320 13 Actuator Air Requirements 520 13 Actuators Alignment 1130 10 Driver installation 1130 5 Drivers 1130 4 Installation 1130 1 IPB 1350 6 Address Error 860 1 ALS interface board 430 23 Analog Cable 1020 1 Connector 1210 2 Analog cables 03396 60530 1010 10 G1530 60560 1010 12 1015 10 G1530 60570 1010 6 1010 7 1010 8 1010 11 1015 5 1015 6 1015 7 101...

Page 853: ...changed 830 3 Electrometer 850 4 Invalid pid 850 19 Invalid type 850 17 I O failure 850 21 Module rev 850 15 Temp sensor 850 10 Temp too hot 850 10 Type mismatch 850 18 Wrong module 850 16 B inlet Bad cksum 850 20 Bad fact cal 850 20 Calib deleted 830 5 Config changed 830 4 Flow cal fail 830 8 Invalid pid 850 19 Invalid type 850 18 I O failure 850 21 Module rev 850 16 Temp sensor 850 12 Temp too h...

Page 854: ...0 7 1010 8 G1530 60630 BCD 1010 4 G1530 60930 APG remote 1010 2 1010 3 1010 5 1010 6 1010 7 1010 8 1015 3 1015 14 G1530 61120 modem 1010 5 G2613 60590 1020 4 G2614 60610 1020 5 Inlet detector harness 1240 2 Modem 1020 9 Modem RS 232C 1020 9 Remote 1020 13 1210 4 1215 7 RS 232 1020 3 1210 7 Cables GPIB 1210 11 Capillary Injection Port 1310 11 Capillary Injection Port Sub Assembly 1310 11 Carbon dio...

Page 855: ...10 11 Injection port fan removal 410 16 Inlet carrier cover removal 410 12 IPB 1330 1 Removing 410 3 Cryo assembly Replacing the CO2 or LN2 inlet 240 18 Cryo circuitry diagram 1220 7 Cryo valve Installation 420 5 Replacement 420 7 Cryogenic cooling Carbon dioxide 520 10 Nitrogen 520 12 Requirements 520 9 D DC voltages Test points 1220 1 Detector ECD 340 1 341 1 FID 310 1 Gas recommendations 520 1 ...

Page 856: ... connectors 1220 2 1225 3 Valve driver circuitry 1220 8 Environmental requirements GC Humidity 510 1 Temperature 510 1 EPC Cool On Column inlet 230 2 ECD 340 2 341 2 ECD flow manifold replacement 340 11 FID 310 1 FID flow manifold replacement 310 14 FPD flow manifold replacement 350 24 Gas saver mode 210 4 NPD 320 1 NPD flow manifold replacement 320 20 Pneumatics board replacement 430 14 Purged Pa...

Page 857: ...est failed 850 4 Fault 210 Signal path test failed 850 4 Fault 211 Signal path test failed 850 4 Fault 212 Front electrometer out of specification 850 4 Fault 213 Back electrometer out of specification 850 4 Fault 214 Front detector flame out 850 5 Fault 215 Back detector flame out 850 5 Fault 216 Front TCD filament open 850 5 Fault 217 Back TCD filament open 850 5 Fault 218 Front TCD filament sho...

Page 858: ...lt 265 Front inlet invalid pids 850 19 Fault 267 Front detector invalid pids 850 19 Fault 268 Back detector invalid pids 850 19 Fault 269 Pneu aux module invalid pids 850 19 Fault 270 Front inlet invalid module checksum 850 20 Fault 271 Back inlet invalid module checksum 850 20 Fault 272 Front detector invalid module checksum 850 20 Fault 273 Back detector invalid module checksum 850 20 Fault 274 ...

Page 859: ...lacement TCD 330 13 FPD flow manifold replacement 350 24 Frequency test ECD 340 17 341 22 Front det Adjusting 820 5 Air flow 820 3 Anode gas 820 3 Equib time 820 5 Flame out 850 5 H2 flow 820 3 Igniting 820 5 Ref flow 820 3 Shutdown 820 6 Temp 820 2 Waiting 820 4 Front inlet Flow 820 3 Pressure 820 3 Purging 820 8 Temp 820 2 Fuses AC Power board 1230 4 Main board 1220 4 Oven heater 1230 2 1230 4 G...

Page 860: ... Sensor Cool On Column inlet 230 7 Purged Packed inlet 220 5 Split Splitless inlet 210 11 TCD 330 11 Heater sensor Replacing assembly 250 11 Host system 820 8 Humidity operating ranges 510 1 Hydrocarbon trap description 520 8 Hydrogen NPD turning off during solvent peak 320 4 Hydrogen shutdown 850 1 I Illegal Instruction 860 1 Incorrect ROM 2 860 1 Incorrect ROM 3 860 1 INET Cable 82167 60003 1010...

Page 861: ...s inlet leak points 210 30 Line interrupt 850 14 Line voltage Power configuration 1230 1 Requirements 530 1 Liner Replacing 240 35 Liners Column 1310 5 Liquid carbon dioxide Requirements for cryogenic cooling 520 10 Liquid nitrogen Requirements for cryogenic cooling 520 12 Liquid sample valves 1110 5 M Main Board Fuses 1220 4 IPB 1360 6 1360 8 Replacement 430 1 Replacing EEPROM chips 430 11 Test p...

Page 862: ...s Detector NPD Manifold Assembly 1320 12 No 512Hz Interrupt 860 1 No line interrupt 850 13 No mux ADC response 850 14 Non Agilent PC Communication with 6890 GC 1010 4 1015 4 NonEPC inlet gas recommendations 520 1 520 2 520 4 NPD Active element replacement 320 13 Bead replacement 320 13 Cleaning 320 30 Collector replacement 320 16 Collector cleaning 320 30 Detector replacement 320 10 Electrometer r...

Page 863: ...ower supply AC board connectors 1230 5 AC board IPB 1360 4 Fuses 1230 4 IPB 1360 2 Oven heater fuses 1230 2 Oven heater shroud 1230 3 Voltage configuration 1230 1 Power transformer replacement 430 17 Pre run 250 4 Pressure check valves 1150 5 Pressure programming and gas saver 250 7 Pressure regulators Connecting to gas tubing 520 7 Pipe thread connections 520 7 Recommendations 520 7 Printer speci...

Page 864: ...5 Sensor Oven sensor replacement 420 13 Purged Packed inlet 220 5 TCD 330 11 Sensors temperature resistance 1240 7 Septum head Installing 240 3 Removing replacing 240 33 Septumless head Cleaning 240 30 Removing 240 29 Septum replacing 240 35 Shock hazard 110 2 Shroud Heater coil resistance 1230 9 Oven 1230 3 Shutdown 10 Back detector fuel gas shutdown 840 6 Shutdown 11 Back detector air ref shutdo...

Page 865: ...ent trap replacing 210 13 Splitless mode Pulsed 240 8 Volatiles Interface 250 2 Splitless Modes 240 6 Split Splitless inlet EPC manifold replacement 210 17 Gas saver mode 210 4 Heater Sensor replacement 210 11 IPB 1310 2 1310 7 1310 8 Leak points 210 30 Leak test 210 19 Manifold IPB 1310 5 Replacement 210 8 Theory of operation 210 2 Start Stop remote cable 1210 4 1215 7 Static RAM Failure 860 1 SV...

Page 866: ...ess 1240 4 Valve driver IPB 1350 4 Valve fitting assembly Solvent Vapor Exit Accessory 260 2 Valves Actuator alignment 1130 10 Actuator installation 1130 1 Actuator IPB 1350 6 Bodies 1110 3 Configuration diagrams 1140 1 Driver circuitry 1220 8 Driver installation 1130 5 Drivers 1130 4 General purpose 1110 4 IPB 1350 10 1350 12 Liquid sample 1110 5 Pressure check 1150 5 Proportional control Trouble...

Page 867: ...config changed 830 5 Warning 115 Aux 5 config changed 830 5 Warning 117 F inl calib deleted 830 5 Warning 118 B inlet calib deleted 830 5 Warning 119 F det calib deleted 830 6 Warning 120 B det calib deleted 830 6 Warning 121 P aux calib deleted 830 6 Warning 122 Host communications data overrun 830 6 Warning 123 Host communications data error 830 6 Warning 124 Host communications abnormal break 8...

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Summary of Contents for 6890 Series

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Agilent Technologies 6890 Series, Service Manual, Page: 269 / 867

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Summary of Contents for 6890 Series

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