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Gow-Mac 5900 Series, Instructions & Operating, Page: 1 / 44

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Series 5900

 Discharge Ionization Detector

 Gas Chromatograph

Series 5900:  105-125 VAC, 60 Hz

Series 5902:  200-240 VAC, 50 Hz

July 2021 

Rev. 5

READ INSTRUCTIONS 

BEFORE OPERATING

277 Brodhead Road, Bethlehem, PA 18017-8600 U.S.A. Tel: (610) 954-9000

OPERATING MANUAL

Summary of Contents for 5900 Series

Page 1: ...ization Detector Gas Chromatograph Series 5900 105 125 VAC 60 Hz Series 5902 200 240 VAC 50 Hz July 2021 Rev 5 READ INSTRUCTIONS BEFORE OPERATING 277 Brodhead Road Bethlehem PA 18017 8600 U S A Tel 610 954 9000 OPERATING MANUAL ...

Page 2: ......

Page 3: ...SPECIFICATIONS 7 SECTION 3 INSTALLATION 9 SECTION 4 OPERATING CONTROLS 17 SECTION 5 OPERATION OF THE SERIES 5900 DID GC 23 SECTION 6 MAINTENANCE SERVICE 31 SECTION 7 VALVES 33 SECTION 8 REPLACEMENT PARTS 37 SECTION 9 ADDENDUM DUAL O2 TRAPS 39 ...

Page 4: ...nstrument was designed for DRY sample applications only Care must be taken to make sure only moisture free samples are introduced into the system GOW MAC Instrument Company is not responsible for damage to equipment caused by exposure to hydrolyzed samples ...

Page 5: ...igned For properly grounded outlet only D DO NOT overload the AC outlet with other electrical equipment E Adhere to the color coding descriptions when hooking up electrical connections F Repair or replace faulty or frayed wiring IMMEDIATELY 1 4 COMPRESSED GAS CYLINDERS Compressed gas cylinders are potential sources for serious accidents injuries and even death if proper precautions and safety prac...

Page 6: ...GOW MAC Model 21 070 Mini Gas Leak Detector is recommended to find small leaks B Keep combustibles away from gas cylinders and eliminate ignition sources C DO NOT place papers charts samples etc on top of the GC D Maintain adequate ventilation Vent all gases to the outside DO NOT allow flammable and or toxic wastes to accumulate E De pressurize supply gas piping before working on it ...

Page 7: ...gs are VCR type There are also exit ports for measuring column flow purge flow and sample flow which are 1 8 compression fittings There are a maximum of four pneumatically actuated valves mounted inside a purged housing Refer to the valve section on the system flow diagram to determine which valves are included in your Series 5900 2 4 Specifications for the Series 5900 DID GC General Dimension 19 ...

Page 8: ...the discharge gas depending on the instrument flow configuration Table 2 1 GC Support Gas Specifications Detector Service Gas Grade Purity Supply Pressure psig Recommended Maximum DID Carrier and detector discharge Helium UHP 99 9999 note 100 120 Purge Valve Actuator Helium Instrument 99 99 80 120 Calibration Analysis dependent 15 20 Sample Various 15 20 O2 Trap Regenera tion H2 UHP 99 999 20 40 N...

Page 9: ...GE BEFORE PLUGGING IT INTO THE OUTLET DO NOT PLUG THE UNIT IN AT THIS TIME F GOW MAC P N 59 595 Accessory Package Package Includes a Ultra high purity regulator with CGA 580 fittings b Ultra high purity regulators with CGA 350 fittings c Regulator with CGA 580 fitting d Noble Gas Purifier Model 75 810 115 VAC or 75 812 230 VAC e Metering Valve 1 8 f Four 4 helium rotameters g Gaskets for VCR conne...

Page 10: ...es consideration should be given to the installation of a stabilizing transformer at the AC outlet An uninterruptable power supply UPS with surge protection is also recommended to prevent disruption from power loss or electrical spikes NOTE BOTH THE GC AND DATA INTERFACE SHOULD BE CONNECTED TO THE SAME DUPLEX SERVICE OUTLET TO PREVENT GROUND LOOPS 3 5 Power Requirements A The Series 5900 DID GC re...

Page 11: ...the instrument flow diagram 1 Disconnect left hand fitting on left hand column 2 Disconnect jumper from the two fittings located on the left hand side of the oven 3 Connect a jumper from the Connection FROM Separator or Connection FROM Trap fitting located on the inside oven to the left hand column 4 Connect a jumper from the Connection TO Separator or Connection TO Trap fitting located on the ins...

Page 12: ...mpression fittings D GOW MAC strongly encourages the use of NEW unused 1 8 stainless steel or inconel tubing Contact GOW MAC Sales to inquire about purchasing new tubing if necessary 1 To prevent contamination of the GC and the extremely sensitive detector from grease oil or chemical residue ALL stainless steel or inconel tubing MUST be free of all possible contaminants PRIOR to connection to the ...

Page 13: ...If for some reason the carrier gas is not as pure as the sample gas negative peaks can occur for gases which are in lower concentration in the sample gas By using a carrier gas purifier GOW MAC Model 75 810 in the helium line instrument grade helium can be purified to a level cleaner than chromatographic grade helium NOTE IT IS HIGHLY RECOMMENDED THAT IF A PURIFIER WAS PURCHASED THE OPERATOR READ ...

Page 14: ...um carrier on at the regulator Allow CARRIER gas to flow for about one 1 hour to purge air out of the system The operator must reference the flow system drawing specific for the Series 5900 model C CARRIER 1 flow should be set to read 30 mL min on the sample rotameter located on the front of the GC when the 4 port Sample Isolation valve is in the CARRIER CW or CCW position Adjust flow with the CAR...

Page 15: ...eline drift and noise CAUTION A LEAK CHECK SHOULD BE MADE OF THE ENTIRE GC SYSTEM PRIOR TO INSTRUMENT OPERATION B Areas To Check 1 Column connections Check at the small holes in the VCR nuts 2 Carrier gas discharge gas connections at the rear of the GC 3 Sample gas connection at the front of the GC 4 All connections made at the gas cylinders NOTE LEAK CHECKS SHOULD BE RUN PERIODICALLY AND ARE A MU...

Page 16: ...16 GOW MAC Instrument Co ...

Page 17: ...s the DID Voltage button to raise voltage and begin discharge current flow Start BLUE button When the DID is lit the DID Voltage button turns GREEN and the text above changes to Run The actual value of the DID Voltage is displayed at the top C DISCHARGE mA Displays actual discharge current for the DID D POLARIZATION VOLTS Displays polarization voltage of the detector E TEMPERATURES a Actual Displa...

Page 18: ...1012 The and button will respectively increase and decrease the range or sensitivity H VALVE CONTROL A BLUE valve control button indicates counter clockwise CCW position and a GREEN button indicates clock wise CW position Remote box allows operator to control the selected valves remotely using external software When the box is checked each respective valve button is GRAYED out and valve control by...

Page 19: ...rol the valves All the valve buttons are GRAYED out when this option is selected 7 Update 5900 Updates the latest firmware See Section 5 2 L 8 Load Settings Loads the saved or default settings for operation 9 Save Settings Stores the operator s preferred settings 10 Restore Valves Gives option on power up to set valve positions to the state at previous power down or to set all valves to the defaul...

Page 20: ...olumns for a specified application NOTE COLUMNS SUPPLIED ARE CONDITIONED PROPER COLUMN CONDITIONING PROCEDURES SHOULD BE OBSERVED BEFORE ANALYSIS IS PERFORMED CARE SHOULD BE TAKEN DURING CONDITIONING SO CONTAMINATION OF THE DETECTOR DOES NOT OCCUR REFER TO SECTION 6 1 D FOR PROPER COLUMN CONDITIONING PROCEDURE 4 5 Front Panel 7 6 5 4 3 2 9 1 11 8 10 FIGURE 4 3 1 LCD digital touchscreen display 2 D...

Page 21: ...CR 7 PURGE OUT 8 VENT 1 9 SAMPLE OUT 10 SAMPLE IN 1 4 VCR Standard on back panel optional on front panel 11 RECORDER output Red Black ground chassis Green 12 I O connection 25 pin connector 13 VALVE CONTROL 9 pin connector 14 ETHERNET connection 15 USB connection 16 Power switch ON OFF 17 From Accessory optional 18 To Accessory optional 1 2 3 4 5 6 7 8 9 10 17 18 14 15 16 11 13 12 FIGURE 4 4 ...

Page 22: ...22 GOW MAC Instrument Co ...

Page 23: ...THE VALVES WERE FACTORY SET TO PRODUCE THE TEST RESULTS INCLUDED WITH THE INSTRUMENT SO DRASTIC ADJUSTMENTS MAY NOT BE NECESSARY SEE PARAMETERS AND SETTINGS LISTED ON THE SUPPLIED TEST CHROMATOGRAM 3 Check for leaks as described in Section 3 13 4 Turn on purge gas flow Check for proper flow rate 30 mL min on back of instrument as described in Section 3 11 This has been factory set but you may need...

Page 24: ... reads 525 V These two values have been factory set 2 To change the settings for DID high voltage press Menu and enter the code number to activate the function Enter 1 to change the Start Voltage or enter 2 to change the Run Voltage Press Enter to set the new values or Esc to exit to main screen 3 Monitor the discharge current for the DID The Discharge mA box should read between 4 10 mA NOTE WHEN ...

Page 25: ...Most NOTE START THE OPERATION WITH THE LOWEST RANGE FIRST AND PROGRESS TO THE MOST SENSITIVE RANGE SOMETIMES IT MAY TAKE LONGER TO REACH HIGHER RANGE EG RANGE 4 DUE TO IMPURITIES IN THE CARRIER GAS LINE IF THE RANGE IS NOT READY WILL APPEAR WAIT FOR 10 SECONDS BEFORE ATTEMPTING TO CHANGE TO LOWER RANGE AGAIN THE DID WILL GET CLEANER IN TIME SUITABLE FOR HIGHER RANGE OPERATION G Gain Adjust The gai...

Page 26: ...alve operation 3 Remote Lockout locks the manual valve control function on the main screen to remotely control the valves ALL the valve buttons are GRAYED out when this option isselected Toactivatethe RemoteLockout press Menu andentercodenumber 6 Press Enter to accept the setting or Esc to exit to the main screen J Save Settings 1 Customized settings and operating parameters can be stored for futu...

Page 27: ...inants the sensitivity will increase and Range and Gain can be set as required for the analysis B It is necessary to purge the sample loop for a sufficient time to remove all traces of room air and old sample This may take 5 to 10 minutes at a flow rate of 50 to 100 mL min especially if you have changed sample sources NOTE THERE MAY BE RESIDUAL AIR TRAPPED IN THE SAMPLE REGULATOR BOURDON TUBES WHI...

Page 28: ...l deteriorate the column and damage the detector 3 Turn OFF MAIN POWER SWITCH on rear of instrument WARNING FOR CERTAIN SAMPLE COMPOSITIONS THAT INTERACT WITH ATMOSPHERICS OXYGEN MOISTURE ETC IT IS NECESSARY TO THOROUGHLY PURGE THE ENTIRE INSTRUMENT OF SAMPLE GAS BEFORE SHUTDOWN FOR PURGE FLOW AN INERT GAS INTO THE SAMPLE INLET THIS IS REQUIRED FOR SAMPLES WITH HIGH CONCENTRATIONS OF COMPOUNDS THA...

Page 29: ... MAC Series 5900 DID GC R 5 0721 3 Front Panel _______ All temperature settings are set to desired settings NOTE IF PEAK SIZE CHANGES AFTER SITTING OVERNIGHT CHECK THE CARRIER GAS AND DISCHARGE GAS FLOW RATES ...

Page 30: ...30 GOW MAC Instrument Co ...

Page 31: ...uld be exercised when changing or removing columns Protect exposed fittings especially VCR sealing surfaces Both a 7 16 and a 3 8 open end wrench are necessary for either removing or tightening the column nuts A new 1 8 VCR gasket is required each time a change is made Assemble gasket between the nuts and screw together the nuts finger tight Apply the two wrenches and tighten the nuts 1 8 turn D C...

Page 32: ... need adjustment again during the life of the instrument If questions arise that this manual does not answer or service of our GC goes beyond these instructions please call our REPAIR DEPARTMENT at 610 954 9000 For a complete overhaul new detector or other repairs please contact us for a RETURN AUTHORIZATION NUMBER and further instructions for the return of your GC Our receiving address for repair...

Page 33: ... gas samples into the chromatograph on a reproducible basis The sample may be take from a static system or from a flowing stream Valves are also used for column back flushing heart cutting column selection sample selection and detector switching A Sample Isolation Valve The 4 port sample isolation valve is included in every Series 5900 GC The sample isolation valve allows the operator to purge the...

Page 34: ...re for another injection Care must be taken to allow sufficient time for the sample loop to be completely filled with sample before injection This time is easily calculated from the carrier gas flow and sample loop volume Similarly allow sufficient time for carrier gas to sweep the loop before switching the valve from INJECT to PURGE Compressibility of the sample can be a problem when using a gas ...

Page 35: ...is to backflush the heavy gas at a 3 1 ratio meaning there should be 3 minutes of backflush time for every minute into the precolumn E Foreflush or Heartcut Valve The 4 port foreflush valve is opposite of a backflush valve and is used to purge a lighter gas that elutes before the impurities of interest The sample loop will inject the sample gas onto the precolumn which will separate the smaller li...

Page 36: ... signals from a remote source or software The schematic below shows the pin configuration for the valves in relation to the DB9 connector The DB25 connector board can be used to remotely control the GC and digitally read the output signal See schematic below for wiring configuration 9 8 7 6 GND GND POL VOLT 2 VALVE1 VALVE 2 VALVE 3 DB9 Rear Connector Board Labeled VALVE CONTROL DB25 Rear Connector...

Page 37: ...1 P Power Supply 24 VDC 0 1 7 A 123 111 PCD CPU Interface 123 328 Detector Discharge Ionization Detector 15 590 Electronic Parts Controls Blower Motor 127 358 Blower Wheel 127 381 Blower Wheel Ring 127 370 Fan Blade 127 360 Purge Adjust Valve 180 671 Probe platinum 124 175 Back Panel Fan 24 V 124 267 Back Panel Finger Guard 127 246 Power Cord 3 conductor shielded 115 V 127 378 Power Cord 3 conduct...

Page 38: ...lve 181 502 6 port Valco Gas Sample Valve Hastelloy 181 402HC 8 port Valco Column Selection Valve 181 503 8 port Valco Column Switching Valve Hastelloy 181 403HC 10 port Valco Column Selection Valve 181 504 10 port Valco Column Switching Valve Hastelloy 181 404HC Indicates special parts for corrosion resistant DID systems Indicates cleaned for Oxygen Service ...

Page 39: ...e of the oxygen sample to a catalyst after injection with a gas sample valve results in oxidation of the copper based catalyst leaving the remaining impurities in the sample helium carrier stream 9 2 Connections 1 8 Stainless steel line from regeneration gas H2 or CO to the O2 Trap Act IN on the fitting on back of accessory housing 9 3 Operation A Oxygen trap control features are available through...

Page 40: ... switches that trap into the flow path and automatically starts the regeneration process of the other oxygen trap by raising the temperature of the offline trap A regeneration timer is started and the offline trap will remain at the preset regeneration temperature 130 C for 8 hours There will be a red indicator light next to the regenerate timer and this countdown timer will decrease in minutes Th...

Page 41: ... will automatically return to normal operating temperature 80 C This frame will be highlighted green indicating the temperature is stable and ready for use The trap in operation will have ready under the temperature box and the trap with regenerate is the one ready for use This newly regenerated trap can now be switched into service at any time The regeneration process will begin automatically whe...

Page 42: ...42 GOW MAC Instrument Co F Remote Operation is available by selecting the remote box and connecting an available contact closure valve cable ...

Page 43: ...quipment are expressly not covered by this warranty 6 Instrument parts which have been repaired or replaced during the warranty period are themselves warranted only for the remaining unexpired portion of the original one year warranty 7 Repairs adjustments and service performed after expiration of the one year warranty period shall be charged to the purchaser at the then current prices for parts l...

Page 44: ... describe where on or in the instrument device part there could be any residual contamination for example blood spill on the surface ____________________________________________________________________________________________ ________________________________________________________________________________________________________ 2 Provide details of these hazards Include names Material Safety Data...

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