Agilent Technologies Agilent 7890 Series Maintenance Manual Download Page 286

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286

Maintaining Your GC

Maintaining the NPD

To Bakeout the NPD

Bakeout the NPD with the column installed or
uninstalled. If uninstalled, gather the following (see

“Consumables and Parts for the NPD”

on page 260):

•

Capillary adapter (adaptable NPD only)

•

Column nut

•

No- hole ferrule

Load the

GC maintenance method

and wait for the GC to

become ready.

Set the bead voltage to 0, then turn it Off.

If the column is uninstalled, plug the detector connection
with the capillary adapter, column nut, and no- hole
ferrule.

Maintain inert carrier gas flow through the column, or
remove the column from the GC.

Set normal operating flows.

Set the detector temperature at 25 °C above the typical
method setpoint temperature.

Set the oven temperature to 250 °C or 25 °C above the
normal maximum operating temperature. Do not exceed
the column’s temperature limit.

Hold at temperature for 15 to 30 minutes.

If the column is not installed in the NPD, install it. (See

“To Install a Capillary Column in the NPD”

on page 268.)

Restore the analytical method and allow the NPD to
equilibrate at operating temperatures and flows for 10 to
30 minutes.

Check the NPD leakage current. See

“To Check the NPD

Leakage Current”

on page 285.

WA R N I N G

If using hydrogen as a carrier gas, turn off the hydrogen supply
and cap the end of the column to prevent an oven explosion.

WA R N I N G

Be careful! The detector may be hot enough to cause burns. If the
detector is hot, wear heat-resistant gloves to protect your hands.

Summary of Contents for Agilent 7890 Series

Page 1: ...Agilent Technologies Agilent 7890 Series Gas Chromatograph Maintaining Your GC ...

Page 2: ...t not limited to the implied warranties of merchantability and fitness for a par ticular purpose Agilent shall not be liable for errors or for incidental or consequential damages in connection with the furnishing use or perfor mance of this document or of any information contained herein Should Agilent and the user have a separate written agreement with warranty terms covering the material in this...

Page 3: ...ion Gas Cylinder 25 Using the removable oven door 27 4 Maintaining Capillary Columns Consumables and Parts for Columns 30 To Install a Capillary Column Hanger 32 To Install Capillary Column Clips 33 To Condition a Capillary Column 34 To Cut a Loop from a Column 37 To Reverse a Column and Bakeout Contaminants 38 To Attach a Capillary Column Using SilTite Metal Fittings 40 To Disconnect Fused Silica...

Page 4: ...the Purged Packed Inlet 79 To Install an Adapter on the Purged Packed Inlet 81 To Change the O Ring on the Purged Packed Inlet 83 To Change the Glass Liner on the Purged Packed Inlet 84 To Install an Insulation Cup on the Purged Packed Inlet 86 To Clean the Purged Packed Inlet 87 To Bakeout Contaminants from the Purged Packed Inlet 89 To Install a Packed Metal Column 90 To Install a Packed Column ...

Page 5: ...place the Filter in the Split Vent Line for the MMI 144 To Clean the Multimode Inlet 147 To Bakeout Contaminants from the MMI 149 9 Maintaining the PTV Inlet Consumables and Parts for the PTV Inlet 152 Exploded Parts View of the PTV Inlet 154 To Install a Capillary Column with the PTV Inlet 155 To Clean the Septumless Head on the PTV Inlet 158 To Replace the Septumless Head PTFE Ferrule on the PTV...

Page 6: ...09 To Replace an FID Jet 212 To Perform Maintenance on the FID Collector Assembly 216 To Check the FID Leakage Current 224 To Check the FID Baseline 225 To Install the FID Insulation Cup Assembly Adaptable FID Only 226 To Install the Optional FID PTFE Chimney Insert 228 To Bakeout the FID 229 12 Maintaining the TCD Consumables and Parts for the TCD 232 To Install a Capillary Column in the TCD 234 ...

Page 7: ...ctor Ceramic Insulators and Jet 279 To Check the NPD Leakage Current 285 To Bakeout the NPD 286 15 Maintaining the FPD Consumables and Parts for the FPD 290 Exploded Parts View of the FPD 292 To Install a Packed Column Adapter in the FPD 293 To Attach a Capillary Column to the FPD 295 To Change the FPD Wavelength Filter 297 To Remove the FPD Cover 300 To Replace the FPD Ignitor 302 To Install the ...

Page 8: ...he PCM 330 Calibrating the PCM Interface 331 Installing or Replacing Frits in the PCM 332 19 Maintaining a Valve Consumables and Parts for Valves 336 Exploded Parts View of GC Rotary Valves 337 To Replace a Gas Sampling Valve Loop 338 To Align a Rotary Valve Rotor 340 To Replace a Rotary Valve in the Valve Box 341 To Remove the Upper Valve Box 344 To Install the Upper Valve Box 346 20 Swagelok Con...

Page 9: ...ired for Maintenance 11 Maintenance Methods for the 7890 Series GC 13 Safety Information 15 Finding a Replacement Part Number 16 This section provides an overview of the maintenance procedures included in this document It also lists the tools needed for routine maintenance and the safety information one should be aware of before performing a maintenance task ...

Page 10: ...e typical pneumatic connections using Swagelok and other standard fittings Reset GC service counters Where to find a procedure Included in this manual are chapters on maintaining the following GC components Capillary Columns Split Splitless Inlet Purged Packed Inlet COC Inlet Multimode Inlet PTV Inlet Volatiles Inlet VI FID TCD uECD NPD FPD FPD Auxiliary EPC PCM Valves Each chapter includes A list...

Page 11: ...0 1807 or screwdriver T 10 Torx key 8710 2140 or screwdriver 3 mm hex key wrench 8710 2411 Electronic flow meter s or bubble meter s capable of calibrated measurements at 1 10 and 100 mL min flow ranges Electronic leak detector Magnifying loupe 20X 430 1020 Metric ruler Bench vise for setting Swagelok fittings Razor or sharp knife Tweezers 8710 0007 or thin needle nose pliers 8710 0004 Needle nose...

Page 12: ...ll ultrasonic cleaning bath with aqueous detergent for cleaning detector and inlet parts Gloves clean lint free nylon large 8650 0030 small 8650 0029 for handling contamination sensitive parts Steel wool 0 or 00 grade for cleaning an inlet s septum seating surfaces Included with the GC ship kits Table 1 Tools and materials for GC maintenance continued ...

Page 13: ...nance detector maintenance and general GC maintenance tasks Set the oven temperature to 35 C This allows the oven fan to assist cooling Set all inlet temperatures to 35 C and set inlet gas pressures to 0 0 If performing column maintenance remember to wait for the oven and column to cool down before turning off column carrier gas flow at the source Also remember to cap both ends of the column to ke...

Page 14: ...ng off column carrier gas flow at the source Also remember to cap both ends of the column to keep air out once it is removed If you are not performing column maintenance keep inert carrier gas helium or nitrogen flowing to protect the column Maintain all temperature setpoints for installed detectors if desired The filament in the TCD will be damaged if exposed to air while hot To protect the filam...

Page 15: ...taining the GC 1 Maintaining Your GC 15 Safety Information Before performing a maintenance task read the important safety and regulatory information found in the 7890 Series Safety and Regulatory Information book ...

Page 16: ...arts Finder will be installed If you want to install the tool on another computer Parts Finder is included on the Agilent GC and GC MS User Manuals Tools DVD To find a consumable or replacement part using Parts Finder navigate to the part graphically based on the part s location in the GC Figure 1 Quickly navigate to replacement parts by clicking on images of GC components Part numbers are also in...

Page 17: ...r 18 To Remove the Pneumatics Cover 19 To Remove the Electronics Cover 20 This section describes how to remove covers as needed for routine maintenance Only the covers listed in this chapter should be removed Removing other GC covers can compromise the safety features of the GC leading to personal injury or damage to the instrument ...

Page 18: ...se it to a vertical position 2 Lift the right side and disengage the pin on the lower left side To replace the cover make certain that the slot in the bushing lower right corner is vertical and that the bushing is fully seated Installation is then the reverse of removal CAUTION Do not force the cover either when installing it or closing it This could break the plastic parts ...

Page 19: ...The pneumatics cover protects the flow manifolds in the back top of the GC 1 Disconnect any vent tubing connected to the split and septum purge vents 2 Two large buttons on each side of the GC secure the cover to the detector frame Press both buttons and lift the cover off ...

Page 20: ...sen the screw on the left side of the electronics cover 3 Raise the cover to the vertical position With FPD installed 1 Raise or remove the detector top cover 2 Loosen the screw on the left side of the electronics cover 3 Loosen the two thumbscrews in the tray below the PMT and remove the two screws in the back of the tray 4 Remove the tray from the electronics cover 5 Raise the cover to the verti...

Page 21: ...lent Technologies 3 Maintaining the GC Consumables and Parts for General GC Maintenance 22 Parts Identification 24 To Change the Hydrogen Sensor Calibration Gas Cylinder 25 Using the removable oven door 27 ...

Page 22: ... Regulator 2 stage brass body stainless steel diaphragms 125 psi max CGA350 hydrogen argon methane with 1 8 in fitting For 1 4 in tubing purchase a 1 4 in adapter 5183 4642 Regulator 2 stage brass body stainless steel diaphragms 125 psi max CGA346 air with 1 8 in fitting For 1 4 in tubing purchase a 1 4 in adapter 5183 4641 Regulator 2 stage brass body stainless steel diaphragms 125 psi max CGA590...

Page 23: ...onnecting unit 1 8 in CP17985 Gas Clean filter GC MS 1 pk CP17973 Gas Clean filter oxygen 1 pk CP17970 Gas Clean filter moisture 1 pk CP17971 Gas Clean filter charcoal 1 pk CP17972 Gas Clean filter kit for TCD CP738408 Gas Clean filter starter kit for FID CP7995 Gas Clean filter starter kit for FID CP736530 Gas Clean filter kit for GC MS CP17976 Gas Clean filter kit for GC MS CP17977 Gas Clean fil...

Page 24: ... Maintaining Your GC 3 Maintaining the GC Parts Identification 1 8 inch Swagelok nut and ferrule 1 8 inch copper tubing cut to length needed Pressure regulator Calibration gas cylinder Gas cylinder stand ...

Page 25: ...sure in the new cylinder 6 Open the GC oven door and connect a flowmeter tube to the sensor tube in the oven 7 Press Options then go to Calibration Hydrogen Sensor and press Enter 8 Scroll to Start Calibration Cycle and press On Yes The calibration cycle begins The hydrogen sensor module will wait to stabilize then will begin to send calibration gas across the sensor WARNING Connect only the Agile...

Page 26: ... the flow rate from the tube adjust the pressure regulator on the calibration gas cylinder until the flow rate is approximately 30 mL min Remove the flowmeter and close the oven door 10 Allow the calibration cycle to complete approximately 5 minutes total 11 Check for leaks ...

Page 27: ...lt the top of the door out to release the top pin from the hinge 4 Using both hands carefully lift off the oven door from the lower oven door pin and remove the door from the GC To install the oven door 1 Using both hands carefully place the over door onto the lower door pin 2 Tilt the door up and under the upper hinge then engage the top pin into the hinge 3 Lock the lever WARNING To prevent pers...

Page 28: ...28 Maintaining Your GC 3 Maintaining the GC ...

Page 29: ...Parts for Columns 30 To Install a Capillary Column Hanger 32 To Install Capillary Column Clips 33 To Condition a Capillary Column 34 To Cut a Loop from a Column 37 To Reverse a Column and Bakeout Contaminants 38 To Attach a Capillary Column Using SilTite Metal Fittings 40 To Disconnect Fused Silica Tubing From a SilTite Fitting 42 ...

Page 30: ...m capillary columns 5080 8853 10 pk Column nut finger tight for 100 to 320 mm columns Connect column to inlet or detector 5020 8292 250 Ferrule Vespel graphite 0 4 mm id 0 1 mm 0 2 mm and 0 25 mm capillary columns 5181 3323 10 pk Ferrule graphite 0 5 mm id 0 1 mm 0 2 mm 0 25 mm and 0 32 mm capillary columns 5080 8853 10 pk Column nut finger tight for 100 to 320 mm columns Connect column to inlet o...

Page 31: ...utting capillary columns 420 1000 Ferrule tool kit Ferrule installation 440 1000 Table 3 Nuts ferrules and hardware for capillary columns continued Column id mm Description Typical use Part number quantity Table 4 Capillary column hangers Description Part Number Column hanger 1460 1914 Capillary column clip kit for 7 inch column basket G1530 61580 ...

Page 32: ... into the slots in the selected position WARNING Be careful The oven may be hot enough to cause burns If the oven is hot wear heat resistant gloves to protect your hands WARNING Wear safety glasses to protect your eyes from flying particles while handling cutting or installing glass or fused silica capillary columns Use care in handling these columns to prevent puncture wounds Front position Back ...

Page 33: ...w is positioned in the slot 5 Tighten the screws enough to hold the clips in place Once the column is installed fully tighten the four corner screws to secure the clips and column to the oven wall WARNING Be careful The oven may be hot enough to cause burns If the oven is hot wear heat resistant gloves to protect your hands WARNING Wear safety glasses to protect your eyes from flying particles whi...

Page 34: ...nlet To Install a Capillary Column with the Purged Packed Inlet To Install a Capillary Column with the COC Inlet To Install a Capillary Column with the PTV Inlet To Install a Capillary Column with the VI WARNING Do not use hydrogen as the carrier for conditioning It could vent into the oven and present an explosion hazard WARNING Be careful The oven and or detector may be hot enough to cause burns...

Page 35: ...it for the GC to become ready 8 Attach the column to the detector For details select your specific detector from the following list To Install a Capillary Column in the FID To Install a Capillary Column in the NPD To Install a Capillary Column in the TCD To Install a Capillary Column in the uECD To install a Capillary Column in the FPD Plus WARNING Be careful The oven and or detector may be hot en...

Page 36: ...s To Install a Capillary Column Adapter in the FPD 9 Restore the analytical method For FID or any FPD immediately turn off the flame For NPD immediately turn off the bead 10 After the GC becomes ready wait 10 minutes then ignite the detector flame or bead ...

Page 37: ...Install a Capillary Column with the Split Splitless Inlet To Install a Capillary Column with the Multimode Inlet To Install a Capillary Column with the Purged Packed Inlet To Install a Capillary Column with the COC Inlet To Install a Capillary Column with the PTV Inlet To Install a Capillary Column with the VI WARNING Be careful The oven and or inlet may be hot enough to cause burns If the inlet i...

Page 38: ...Capillary Column with the Split Splitless Inlet To Install a Capillary Column with the Purged Packed Inlet To Install a Capillary Column with the COC Inlet To Install a Capillary Column with the Multimode Inlet To Install a Capillary Column with the PTV Inlet To Install a Capillary Column with the VI 7 Attach your column to the detector Select your specific detector from the following list To Inst...

Page 39: ...ity to 30 cm s For Multimode Split Splitless PTV and VI inlets select split mode and set the split vent flow to 200 mL min 9 Purge the column with carrier flow for at least 10 minutes before heating the oven 10 Set the inlet temperature to 300 C or 25 C above the normal operating temperature 11 Set the column oven 25 C above the GC method final oven temperature to bake contaminants out of the inle...

Page 40: ...One 7 16 inch open end wrench Column cutting tool 5181 8836 Internal nut G2855 20530 Lint free gloves 2 Pass the tubing end through the internal nut and SilTite ferrule leaving approximately 1 cm of fused silica tubing protruding beyond the ferrule Thread the swaging tool over the column Table 5 Available SilTite metal ferrule packages Part number SilTite ferrule description 5188 5361 For 0 2 to 0...

Page 41: ...degrees one flat 4 Remove the swaging tool 5 Using a wafer column cutter trim the tubing at the small end of the ferrule leaving approximately 0 3 mm of tubing extending beyond the ferrule Check the end of the tube with a magnifier The end of the tube need not be perfectly square but should not have cracks that extend under the ferrule 6 Insert the assembled ferrule and nut into the SilTite fittin...

Page 42: ... Fitting Loosen and remove the internal nut If tubing and ferrule do not come free insert a pointed object pen paper clip into the ferrule release hole and press firmly You will hear a click as the ferrule releases The SilTite ferrule seal should remain leak free for many disconnections and reconnections ...

Page 43: ...with the Split Splitless Inlet 48 To Change the Septum on the Split Splitless Inlet 52 To Clean the Septum Seat in the Insert Assembly of the Split Splitless Inlet 54 To Change the Liner and O Ring on the Split Splitless Inlet 56 To Replace the Gold Seal on the Split Splitless Inlet 59 To Replace the Filter in the Split Vent Line for the Split Splitless Inlet 61 To Clean the Split Splitless Inlet ...

Page 44: ...aper glass wool 900 µL Yes 5062 3587 Splitless Single taper no glass wool 900 µL Yes 5181 3316 Splitless Dual taper no glass wool 800 µL Yes 5181 3315 Splitless MS Certified single taper glass wool Yes 5188 6568 Splitless Direct inject 2 mm id quartz 250 µL No 18740 80220 Splitless Direct inject 2 mm id 250 µL Yes 5181 8818 Direct inject Headspace or purge and trap 1 5 mm id 140 µL No 18740 80200 ...

Page 45: ... capillary columns 5181 3323 10 pk Ferrule graphite 0 5 mm id 0 1 mm 0 2 mm 0 25 mm and 0 32 mm capillary columns 5080 8853 10 pk Ferrule graphite 0 4 mm id 500 2114 10 pk Column nut finger tight for 100 to 320 mm columns Connect column to inlet or detector 5020 8292 All Ferrule no hole Testing 5181 3308 10 pk Capillary column blanking nut Testing use with any ferrule 5020 8294 Column nut universa...

Page 46: ...s liner for temperatures above 350 C 10 pk 5180 4173 Split vent trap PM kit single cartridge 5188 6495 Retaining nut G1544 20590 Gold plated seal standard application 5188 5367 Gold plated seal with cross high split flows includes SS washer 5182 9652 Stainless steel washer 0 375 inch od 12 pk 5061 5869 Reducing nut 18740 20800 Column nut blanking plug 5020 8294 Capillary inlet preventative mainten...

Page 47: ...loded Parts View of the Split Splitless Inlet Column nut Ferrule Insulation cup Insulation Reducing nut Washer Inlet gold seal Retaining nut Septum Septum retainer nut Split splitless inlet body Liner Split vent line Insert assembly O ring Merlin Microseal Merlin cap ...

Page 48: ... liner is installed See Consumables and Parts for the Split Splitless Inlet on page 44 4 Place the column on the hanger with the ends pointing up and the label to the front WARNING Do not use hydrogen as the carrier for conditioning It could vent into the oven and present an explosion hazard WARNING Be careful The oven and or inlet may be hot enough to cause burns If either is hot wear heat resist...

Page 49: ...ean break 7 Break off the column end by supporting it against the column cutter opposite the scribe Inspect the end with a magnifying loupe to make certain there are no burrs or jagged edges 8 Wipe the column walls with a tissue dampened with isopropanol to remove fingerprints and dust CAUTION Wear clean lint free gloves to prevent contamination of parts with dirt and skin oils Ferrule Column nut ...

Page 50: ...turn with a wrench so that the column cannot be pulled from the fitting with gentle pressure 13 Configure the new column If using the optional barcode scanner scan the column directly into your data system software configuration then download the changes to the GC 14 Condition the column per the manufacturer s recommendation See To Condition a Capillary Column 15 Install the column into the detect...

Page 51: ...urn off the flame For NPD immediately turn off the bead 18 After the GC becomes ready wait 10 minutes then ignite the detector flame or bead 19 Allow the oven inlet and detector to equilibrate at operating temperature then retighten the fittings 20 Reset the EMF counter See To Reset an EMF Counter in the Operation Manual WARNING Be careful The oven inlet and or detector may be hot enough to cause ...

Page 52: ...ut or Merlin cap 4 Use tweezers to remove the septum or Merlin Microseal from the insert assembly Do not gouge or scratch the interior of the insert assembly 5 Firmly press the new septum or Merlin Microseal into the fitting The metal parts side of the Merlin Microseal should face down toward the oven 6 Install the septum retainer nut or Merlin cap and finger tighten Tighten the septum retainer nu...

Page 53: ...lit Splitless Inlet 5 Maintaining Your GC 53 7 Restore the analytical method 8 Reset the EMF counter See To Reset an EMF Counter in the Operation Manual CAUTION Overtightening the septum nut can cause contamination 1 mm ...

Page 54: ...ool optional Tweezers Compressed filtered dry air or nitrogen Wrench capillary inlet optional 2 Load the inlet maintenance method and wait for the GC to become ready 3 Slide the locking tab forward counterclockwise Lift the septum assembly straight up and away from the inlet to avoid chipping or breaking the liner 4 Remove the septum retainer nut or Merlin cap WARNING Be careful The oven and or in...

Page 55: ...rogen to blow away the pieces of steel wool and septum 8 Line up the tab on the bottom of the septum assembly with the slot on the insert assembly and push down to connect Slide the locking tab to the left 9 Firmly press the new septum or Merlin Microseal into the fitting See To Change the Septum on the Split Splitless Inlet on page 52 10 Replace the septum retainer nut or Merlin cap and finger ti...

Page 56: ...ing septum Wrench capillary inlet optional Lint free gloves 2 Load the inlet maintenance method and wait for the GC to become ready 3 Slide the locking tab forward counterclockwise Lift the septum assembly straight up and away from the inlet to avoid chipping or breaking the liner 4 Loosen the O ring from the sealing surface with tweezers WARNING Be careful The oven and or inlet may be hot enough ...

Page 57: ...ning Your GC 57 5 Grasp the liner with tweezers and pull it out 6 Inspect the surface of the gold seal for graphite or rubber septum contamination If required replace the gold seal See To Replace the Gold Seal on the Split Splitless Inlet on page 59 ...

Page 58: ...sh down to connect Slide the locking tab to the back 10 Turn on the inlet Allow the inlet and column to purge with carrier gas for 15 minutes before heating the inlet or the column oven 11 Bakeout contaminants See To Bakeout Contaminants from the Split Splitless Inlet on page 66 12 Restore the analytical method 13 Reset the liner counter See To Reset an EMF Counter in the Operation Manual 14 If us...

Page 59: ...d the inlet maintenance method and wait for the GC to become ready 3 Remove the inlet liner 4 Remove the column from the inlet Cap the open end of the column to prevent contamination Remove the insulation cup around the base of the inlet 5 Loosen and remove the reducing nut Remove the washer and seal inside the reducing nut WARNING Be careful The oven and or inlet may be hot enough to cause burns ...

Page 60: ...with a wrench 8 Replace the inlet liner 9 Install the column and the insulation cup 10 Bakeout contaminants See To Bakeout Contaminants from the Split Splitless Inlet on page 66 11 Restore the analytical method 12 Reset the EMF counter See To Reset an EMF Counter in the Operation Manual 13 Check for leaks CAUTION Wear clean lint free gloves to prevent contamination of parts with dirt and skin oils...

Page 61: ...e GC to become ready 3 Remove the pneumatics cover top back of GC 4 Remove the retaining clip WARNING Be careful The oven and or inlet may be hot enough to cause burns If either is hot wear heat resistant gloves to protect your hands WARNING The split vent trap may contain residual amounts of any samples or other chemicals you have injected into the GC Follow your company s safety procedures for h...

Page 62: ...sembly Be careful not to stress the tubing between the split vent valve and the trap 7 Remove the old filter cartridge and two O rings 8 Verify the new O rings are seated properly on the new filter cartridge 9 Install the new filter cartridge then reassemble the trap Do not fully tighten yet 10 Place the filter trap assembly in the mounting bracket and install the retaining clip 11 Install the spl...

Page 63: ...ing the Split Splitless Inlet 5 Maintaining Your GC 63 14 Reset the EMF counter See To reset an EMF counter 15 Restore the analytical method 16 Reset the split vent trap counter 17 Install the pneumatics cover ...

Page 64: ... method and wait for the GC to become ready 3 Remove the inlet liner See To Change the Liner and O Ring on the Split Splitless Inlet on page 56 4 Disconnect the column from the inlet 5 Remove the reducing nut and gold seal See To Replace the Gold Seal on the Split Splitless Inlet on page 59 6 Place a beaker in the oven under the inlet to catch the solvent 7 Soak a cleaning brush in the solvent and...

Page 65: ...t 11 Install the liner and O ring 12 Install the column See To Install a Capillary Column with the Split Splitless Inlet on page 48 13 Check for leaks 14 Bakeout contaminants See To Bakeout Contaminants from the Split Splitless Inlet on page 66 15 Restore the analytical method 16 Reset the septum and liner EMF counters See To Reset an EMF Counter in the Operation Manual ...

Page 66: ...ormal operating temperature If the column is not attached to the detector cap the detector fitting 6 Set the inlet temperature to 300 C or 25 C above the normal operating temperature to bakeout contaminants from the inlet mostly through the split vent 7 Set the column oven 25 C above the GC method final oven temperature to bake contaminants from the column Do not exceed the column manufacturer s m...

Page 67: ... Seat in the Purged Packed Inlet 79 To Install an Adapter on the Purged Packed Inlet 81 To Change the O Ring on the Purged Packed Inlet 83 To Change the Glass Liner on the Purged Packed Inlet 84 To Install an Insulation Cup on the Purged Packed Inlet 86 To Clean the Purged Packed Inlet 87 To Bakeout Contaminants from the Purged Packed Inlet 89 To Install a Packed Metal Column 90 To Install a Packe...

Page 68: ...nch column adapter 19243 80540 Recommended septa and O rings for the purged packed inlet 11 mm solid septum low bleed red 5181 1263 50 pk 11 mm septum with partial through hole low bleed red 5181 3383 50 pk 11 mm septum low bleed gray 5080 8896 50 pk Merlin Microseal septum 30 psi 5181 8815 11 mm high temperature silicone septum 350 C and higher 5182 0739 50 pk Viton O ring Top insert weldment 508...

Page 69: ... 45 mm and 0 53 mm capillary columns 5062 3512 10 pk Ferrule graphite 1 0 mm id 0 53 mm capillary columns 5080 8773 10 pk Ferrule graphite 0 8 mm id 0 53 mm capillary columns 500 2118 10 pk Column nut finger tight for 0 53 mm columns Connect column to inlet or detector 5020 8293 320 Ferrule Vespel graphite 0 5 mm id 0 32 mm capillary columns 5062 3514 10 pk Ferrule graphite 0 5 mm id 0 1 mm 0 2 mm...

Page 70: ...olumns Connect column to inlet or detector 5020 8292 All Ferrule no hole Testing 5181 3308 10 pk Capillary column blanking nut Testing use with any ferrule 5020 8294 Column nut universal Connect column to inlet or detector 5181 8830 2 pk Column cutter ceramic wafer Cutting capillary columns 5181 8836 4 pk Pencil diamond tipped Cutting capillary columns 420 1000 Ferrule tool kit Ferrule installatio...

Page 71: ...let 6 Maintaining Your GC 71 Exploded Parts View of the Purged Packed Inlet Column nut Ferrule Insulation cup Insulation Adapter Adapter nut Ferrule Glass liner O ring Top insert weldment Merlin Microseal Merlin cap Septum nut Septum ...

Page 72: ...all an Adapter on the Purged Packed Inlet on page 81 4 Install a new Viton O ring See To Change the O Ring on the Purged Packed Inlet on page 83 5 Place a septum capillary column nut and ferrule on the column WARNING Be careful The oven and or inlet may be hot enough to cause burns If the inlet is hot wear heat resistant gloves to protect your hands WARNING Wear safety glasses to protect your eyes...

Page 73: ...the column cutter opposite the scribe Inspect the end with a magnifying loupe to make certain there are no burrs or jagged edges 8 Wipe the column walls with a tissue dampened with isopropanol to remove fingerprints and dust 9 Position the column so it extends 1 to 2 mm above the end of the ferrule Slide the septum up the column to hold the column nut at this fixed position Ferrule Column nut Sept...

Page 74: ...74 Maintaining Your GC 6 Maintaining the Purged Packed Inlet 1 2 mm ...

Page 75: ...es to the GC 14 Condition the column per the manufacturer s recommendation See To Condition a Capillary Column 15 Install the column into the detector See To Install a Capillary Column in the FID To Install a Capillary Column in the NPD To Install a Capillary Column in the TCD To Install a Capillary Column in the uECD To install a Capillary Column in the FPD Plus To Install a Capillary Column Adap...

Page 76: ...ate at operating temperature then retighten the fittings 20 Reset the column EMF counters See To Reset an EMF Counter in the Operation Manual WARNING Be careful The oven inlet and or detector may be hot enough to cause burns If the oven inlet or detector is hot wear heat resistant gloves to protect your hands ...

Page 77: ... for the GC to become ready 3 Remove the septum retainer nut or Merlin cap 4 Use tweezers to remove the septum or Merlin Microseal from the retainer nut Do not gouge or scratch the interior of the septum head 5 Firmly press the new septum or Merlin Microseal into the fitting The metal parts side of the Merlin Microseal should face down toward the oven WARNING Be careful The oven and or inlet may b...

Page 78: ...ainer nut or Merlin cap and finger tighten Tighten the septum retainer nut until the C ring is about 1 mm above the nut 7 Restore the analytical method 8 Reset the septum counter Merlin Microseal and cap Standard septum CAUTION Overtightening the septum nut can cause contamination 1 mm ...

Page 79: ...croseal from the top insert weldment Do not gouge or scratch the interior of the septum head 6 Scrub the residue from the top insert weldment and septum nut with a small piece of rolled up steel wool and tweezers Ultrasonically clean the retainer nut and top insert weldment 7 Use compressed air or nitrogen to blow away the pieces of steel wool and septum 8 Wearing gloves inspect the O ring and rep...

Page 80: ...n Microseal into the fitting 11 Install the septum retainer nut or Merlin cap and finger tighten Tighten the septum retainer nut until the C ring is about 1 mm above the nut 12 Restore the analytical method 13 Reset the septum counter CAUTION Overtightening the septum nut can cause contamination 1 mm ...

Page 81: ...rule Methanol Lint free gloves 2 Load the inlet maintenance method and wait for the GC to become ready 3 Clean the end of the adapter with a lint free cloth and methanol to remove contamination such as fingerprints 4 Place the tubing nut and Vespel graphite ferrule on the adapter WARNING Be careful The oven and or inlet may be hot enough to cause burns If the inlet is hot wear heat resistant glove...

Page 82: ...e Purged Packed Inlet 5 Insert the adapter straight into the inlet base as far as possible 6 Hold the adapter in this position and finger tighten the nut 7 Tighten an additional 1 4 turn with a wrench Inlet fitting Ferrule Tubing nut Adapter ...

Page 83: ...eady 3 Loosen the top insert weldment to remove the top portion of the inlet 4 Use tweezers to remove the old O ring 5 Insert a new O ring 6 Install and tighten the top insert weldment 7 Restore the analytical method 8 Reset the EMF counter See To Reset an EMF Counter in the Operation Manual WARNING Be careful The oven and or inlet may be hot enough to cause burns If the inlet is hot wear heat res...

Page 84: ...enance method and wait for the GC to become ready 3 Loosen the top insert weldment to remove the top portion of the inlet 4 Use a thin wire or wood splint to carefully lift and remove the old glass liner WARNING Be careful The oven and or inlet may be hot enough to cause burns If the inlet is hot wear heat resistant gloves to protect your hands Top insert weldment Flared end Glass liner CAUTION We...

Page 85: ... seat properly because a capillary column is installed remove the column install the glass liner and replace the column See To Install a Capillary Column with the Purged Packed Inlet on page 72 7 Install the top insert weldment and hand tighten firmly 8 Restore the analytical method 9 Configure the new liner If using the optional barcode scanner scan the liner directly into your data system softwa...

Page 86: ...rule Column nut 2 Install a plug for example a column nut with no hole ferrule in the inlet capillary adapter 3 Push the cup spring to the right Slide the cup over the inlet fitting so that the insulation at the top of the cup is flush against the oven roof 4 Place the spring into the groove in the inlet liner Remove the column nut and no hole ferrule ...

Page 87: ...hod and wait for the GC to become ready 3 Remove the column 4 Remove the septum nut and septum 5 Remove the top insert weldment 6 Remove the glass liner and O ring 7 If used remove the adapter 8 Ultrasonically clean the septum nut top insert weldment and adapter if used in a suitable solvent 9 Place a beaker in the oven under the inlet to catch the solvent 10 Soak a cleaning brush with the solvent...

Page 88: ...he glass liner and O ring See To Change the Glass Liner on the Purged Packed Inlet on page 84 14 Install the top insert weldment and finger tighten 15 Install the septum and septum nut See To Change the Septum on the Purged Packed Inlet on page 77 16 Attach the column See To Install a Capillary Column with the Purged Packed Inlet on page 72 17 Check for leaks 18 Restore the analytical method 19 Se...

Page 89: ...he column is attached to the detector set the detector 25 C above normal operating temperature If the column is not attached to the detector cap the detector fitting 4 Set the inlet temperature to 300 C or 25 C above the normal operating temperature 5 Set the column oven 25 C above the GC method final oven temperature to bake contaminants out of the inlet Do not exceed the column manufacturer s ma...

Page 90: ...a wrench for a 1 8 inch column or an additional 3 4 turn for a 1 4 inch column Use two wrenches one on the column nut and the other on the adapter to prevent the adapter from rotating 7 Press Config Column 1 or Column 2 enter 0 00 in either Length or Diameter and identify the inlet and detector to which the column is attached 8 Condition the column if necessary See To Condition a Packed Column on ...

Page 91: ...m id glass or 1 8 inch od metal columns 50 to 60 mL min for 4 mm id glass or 1 4 inch od metal columns 14 Restore the analytical method For FPD immediately turn off the flame For NPD immediately set the bead voltage to 0 0 15 After the GC becomes ready wait 10 minutes then ignite the detector flame or adjust offset on the NPD bead 16 Allow the oven inlet and detector to equilibrate at operating te...

Page 92: ...cked columns can only be installed on an adaptable FID Consumables and Parts for the TCD Consumables and Parts for the NPD Consumables and Parts for the FPD For uECD 1 4 inch packed columns require no adapter For 1 8 inch packed columns see Consumables and Parts for the uECD 2 Load the GC maintenance method and wait for the GC to become ready 3 Assemble a nut and a ferrule onto the adapter WARNING...

Page 93: ...GC 93 4 Insert the adapter straight into the detector base as far as possible 5 Hold the adapter in this position and finger tighten the nut 6 Tighten an additional 1 4 turn with a wrench for a 1 8 inch column or an additional 3 4 turn for a 1 4 inch column ...

Page 94: ...tor and installed parallel to the oven door When conditioning the column do not attach the column to the detector 4 If conditioning the column insert the column into the purged packed inlet until it bottoms Withdraw the column 1 to 2 mm Finger tighten the inlet column nut See To Condition a Packed Column on page 97 WARNING Be careful The oven inlet and or detector may be hot enough to cause burns ...

Page 95: ...urn with a wrench 10 Press Config Column 1 or Column 2 enter 0 00 in either Length or Diameter and identify the inlet and detector to which the column is connected 11 Establish a flow of carrier gas and purge as recommended by the packing manufacturer Generally 20 to 30 mL min for 2 mm id glass or 1 8 inch od metal columns 50 to 60 mL min for 4 mm id glass or 1 4 inch od metal columns 12 Restore t...

Page 96: ...0 minutes then ignite the detector flame or adjust offset on the NPD bead 14 Allow the oven inlet and detector to equilibrate at operating temperature then retighten the fittings WARNING Be careful The oven inlet and or detector may be hot enough to cause burns If the oven inlet or detector is hot wear heat resistant gloves to protect your hands ...

Page 97: ... and NPD or 1 8 inch cap FPD and TCD 5 Enter a column flow as recommended by the packing manufacturer or an appropriate flow as follows 20 to 30 mL min for 2 mm id glass or 1 8 inch od metal columns 50 to 60 mL min for 4 mm id glass or 1 4 inch od metal columns 6 Raise the oven temperature slowly to the conditioning temperature for the column The conditioning temperature WARNING Do not use hydroge...

Page 98: ...ture limit for the column 30 C less than the maximum is usually sufficient 7 Continue conditioning overnight at the final temperature Cool the oven to room temperature with carrier flow on 8 Attach the column to the detector and maintain established flow See To Install a Packed Metal Column on page 90 ...

Page 99: ...the fitting in a bench vise 4 Assemble a Swagelok nut and ferrules onto the column 5 Fully insert the column into the vise held fitting then withdraw 1 2 mm Finger tighten the nut 6 Tighten the nut an additional 3 4 turn with a wrench for a 1 8 inch column or an additional 1 1 4 turn for a 1 4 inch column 7 Unscrew the column nut from the vise held fitting and remove the column Ferrules should now...

Page 100: ...100 Maintaining Your GC 6 Maintaining the Purged Packed Inlet ...

Page 101: ...et 107 To Check the Needle to Column Size on the COC Inlet 110 To Change a Septum on the COC Inlet 112 To Install an Insert on the COC Inlet 114 To Clean the COC Inlet 116 To Replace the 7693A Injector Needle Support Guide 118 To Replace the Needle Support Assembly in a 7683B Injector 119 To Replace a Needle in a Syringe 122 To Replace the Fused Silica Needle in a Syringe for the COC Inlet 123 To ...

Page 102: ...edle 5 µL 5182 0836 Needle 530 µm 3 pk 5182 0832 Plunger button 10 pk for manual injections using syringe barrel 5182 0836 5181 8866 On column insert spring 19245 60760 Needle support assembly 530 µm for 7683B injector G2913 60977 Table 13 Recommended parts for injections onto 0 53 mm aluminum clad columns Column type Part number Insert aluminum clad 0 53 mm id 19245 20780 4 rings Septum nut 530 µ...

Page 103: ...nded parts for injections onto 0 25 mm fused silica columns Column type Part number Insert 0 25 mm id 19245 20515 6 rings Septum nut 250 320 µm 19245 80521 Syringe barrel removable needle 5 µL 5182 0836 Needle 250 µm 3 pk 5182 0833 Plunger button 10 pk for manual injections using syringe barrel 5182 0836 5181 8866 On column insert spring 19245 60760 Needle support assembly 250 320 µm for 7683B inj...

Page 104: ...septum 5183 4758 50 pk 5 mm through hole septum for automatic injection 5181 1260 25 pk For the duckbill septum Duckbill septum for manual injection only must use cooling tower with duckbill 19245 40050 10 pk Table 16 Recommended parts for injections onto 0 2 mm fused silica columns continued Description Part number quantity Table 18 Nuts ferrules and hardware for capillary columns Column id mm De...

Page 105: ... 1 mm and 0 2 mm capillary columns 5062 3516 10 pk Ferrule Vespel graphite 0 4 mm id 0 1 mm 0 2 mm and 0 25 mm capillary columns 5181 3323 10 pk Ferrule graphite 0 5 mm id 0 1 mm 0 2 mm 0 25 mm and 0 32 mm capillary columns 5080 8853 10 pk Ferrule graphite 0 4 mm id 500 2114 10 pk Column nut finger tight for 100 to 320 mm columns Connect column to inlet or detector 5020 8292 All Ferrule no hole Te...

Page 106: ...ing Your GC 7 Maintaining the COC Inlet Exploded Parts View of the COC Inlet Septum nut 0 53 mm Septum nut 0 25 mm and 0 32 mm columns Septum Spring Insert Ferrule Column nut Cooling tower assembly Duckbill septum ...

Page 107: ...n Insert on the COC Inlet on page 114 4 Place a capillary column nut and ferrule on the column 5 Score the column using a glass scribing tool The score must be square to ensure a clean break WARNING Be careful The oven and or inlet may be hot enough to cause burns If either is hot wear heat resistant gloves to protect your hands WARNING Wear safety glasses to protect your eyes from flying particle...

Page 108: ...g loupe to make certain there are no burrs or jagged edges 7 Wipe the column walls with a tissue dampened with isopropanol to remove fingerprints and dust 8 Gently insert the column into the inlet until it bottoms You should feel spring tension as you push up on the column Do not withdraw the column 9 Insert the column nut into the inlet fitting and finger tighten Good Bad ...

Page 109: ...in the uECD To install a Capillary Column in the FPD Plus To Install a Capillary Column Adapter in the FPD 15 After the column is installed at both inlet and detector establish a flow of carrier gas and purge as recommended by the column manufacturer 16 Restore the analytical method For FPD immediately turn off the flame For NPD immediately set the bead voltage to 0 0 17 After the GC becomes ready...

Page 110: ... for the COC Inlet on page 123 4 Identify the correct insert for the column size See Consumables and Parts for the COC Inlet on page 102 Use the insert that is the same size as the syringe needle to verify that the column you plan to use is the correct size 5 Make a clean cut on the end of the column See To Install a Capillary Column with the COC Inlet on page 107 6 Insert the column into one end ...

Page 111: ...inge needle through the other end of the insert and into the column The needle should visibly enter the column without any obstruction If the needle cannot pass easily into the column reverse the insert to try the needle and column in the other end Syringe Insert Column ...

Page 112: ...eady 3 Replace the septum If you are using a septum nut grasp the knurling and unscrew Remove the old septum with tweezers Use tweezers to install a new septum Push the septum into the septum nut until properly seated Firmly tighten the nut WARNING Be careful The oven and or inlet may be hot enough to cause burns If either is hot wear heat resistant gloves to protect your hands CAUTION Wear clean ...

Page 113: ...p out use a thin wire to remove them from the inlet Insert the replacement duckbill septum into the spring and place in the inlet Reattach the cooling tower assembly then finger tighten 4 Before making an injection check the alignment of the entire assembly using the proper size syringe 5 Restore the analytical method 6 Reset the septum EMF counter See To Reset an EMF Counter in the Operation Manu...

Page 114: ...remains in the septum nut do not remove it unless you want to change it If necessary replace the existing septum or duckbill with a new one See To Change a Septum on the COC Inlet on page 112 5 Remove the spring from the inlet with an extraction wire or tweezers and set it aside Be careful not to lose or damage it because you will use the spring to keep the new insert in position WARNING Be carefu...

Page 115: ...ect size for both the needle and column See To Check the Needle to Column Size on the COC Inlet on page 110 8 Lower the new insert straight into the inlet from the top The insert can be installed either end up 9 Install the spring on top of the insert 10 Install the septum and septum nut or duckbill septum and cooling tower assembly and finger tighten 11 Install the column See To Install a Capilla...

Page 116: ...eptum 5 Remove the existing insert from the inlet by gently pushing it out from below with a wire or piece of column Store the insert for possible later use WARNING Be careful The oven and or inlet may be hot enough to cause burns If either is hot wear heat resistant gloves to protect your hands WARNING Wear safety glasses to protect your eyes from flying particles while handling cutting or instal...

Page 117: ...ueous detergent and fill the bath with distilled water Sonicate for 1 minute 8 Remove the spring and insert from the bath and rinse thoroughly with water and methanol 9 Dry the spring and insert with compressed air or nitrogen 10 Install the insert See To Install an Insert on the COC Inlet on page 114 11 Install the column See To Install a Capillary Column with the COC Inlet on page 107 ...

Page 118: ... 1 Open the injector door 2 Remove the syringe 3 Slide the syringe carriage up to the top position 4 Completely remove the T 10 Torx screw from the support foot Be careful to not let the screw fall into the turret assembly 5 Slide off the support foot 6 Slide on the new support foot 7 Replace the T 10 Torx screw and tighten 8 Install the appropriate syringe 9 Close the injector door 10 Align the i...

Page 119: ... or 250 320 µm columns 2 Remove all vials and bottles from the turret and disconnect the injector cable from the GC 3 Open the injector door 4 Remove the syringe 5 With your finger under the shaft near the bearing on the needle support assembly pull gently to release the bearing from the bearing clip in the syringe carriage 250 µm 320 µm G2913 60978 530 µm standard G2913 60978 ...

Page 120: ...out of the syringe carriage 7 To install the needle support assembly use your right hand to insert the upper end of the rod into the plastic guide to the right of the plunger carrier loop Guide Plunger carrier loop Bearing clip Slide Syringe carriage Bearing CAUTION Do not to pull the assembly by its metal shaft as it is easily bent ...

Page 121: ...aring clip to the right of the syringe latch and push gently on the bearing until the assembly snaps into place 10 Install the syringe Syringe latch Slide Cross section of slide alignment Needle support tracks CAUTION Be careful not to bend the needle during installation Do not operate the injector without a syringe or align the probe in place because the free swinging syringe latch may interfere ...

Page 122: ...p and remove the spring 3 Make sure that the needle has the PTFE disk as shown below If the syringe barrel does not have the PTFE disk use the instructions in the syringe box to wrap the needle 4 Check the new needle for a small wire inserted for shipment Remove the wire if present 5 Slide the spring and the cap over the needle 6 Insert the needle into the syringe barrel 7 Screw the cap back on th...

Page 123: ...d You may need to replace the ferrule 4 Push the plunger down until it bottoms The needle will be flush with the plunger end 5 Finger tighten the retaining nut Pull the needle gently to be sure the PTFE ferrule has formed a tight seal with the needle Tighten the retaining nut further if necessary NOTE The fused silica needle and syringe are only used with the cooling tower and duckbill septum for ...

Page 124: ... free 7 Depress the syringe plunger slowly until it pushes the needle to the end of the barrel then finger tighten the retaining nut 8 Use a solvent to rinse the syringe and check for leaks or blocks Leaks may be fixed by further tightening the retaining nut Blocks or serious leaks require repeating this procedure ...

Page 125: ...the oven 3 Set the inlet mode to Oven Track 4 If the column is attached to the detector set the detector 25 C above normal operating temperature If the column is not attached to the detector cap the detector fitting 5 Set the column oven 25 C above the GC method final oven temperature to bake contaminants out of the inlet Do not exceed the column manufacturer s maximum temperature limit 6 Bakeout ...

Page 126: ...126 Maintaining Your GC 7 Maintaining the COC Inlet ...

Page 127: ...MMI 131 To Install the Column Nut Adapter 132 To Install a Capillary Column with the MMI 133 To Change the Septum on the MMI 137 To Clean the Septum Seat in the Insert Assembly of the MMI 139 To Change the Liner and O Ring on the MMI 141 To Replace the Filter in the Split Vent Line for the MMI 144 To Clean the Multimode Inlet 147 To Bakeout Contaminants from the MMI 149 ...

Page 128: ...z 250 µL No 18740 80220 Splitless Direct inject 2 mm id 250 µL Yes 5181 8818 Direct inject Headspace or purge and trap 1 5 mm id 140 µL No 18740 80200 Direct column connect Single taper splitless 4 mm id Yes G1544 80730 Direct column connect Dual taper splitless 4 mm id Yes G1544 80700 Table 20 Nuts ferrules and hardware for capillary columns Column id mm Description Typical use Part number quanti...

Page 129: ...tor 5020 8292 All Ferrule no hole Testing 5181 3308 10 pk Capillary column blanking nut Testing use with any ferrule 5020 8294 Column nut universal Connect column to inlet or detector 5181 8830 2 pk Column cutter ceramic wafer Cutting capillary columns 5181 8836 4 pk Pencil diamond tipped Cutting capillary columns 420 1000 Ferrule tool kit Ferrule installation 440 1000 Table 20 Nuts ferrules and h...

Page 130: ...er for temperatures above 350 C 10 pk 5180 4173 Split vent trap PM kit single cartridge 5188 6495 Column nut blanking plug 5020 8294 Cleaning kit multimode inlet Contains 5 each abrasive swabs and 5 each cotton swabs G3510 60820 Column nut adapter G3510 20018 Table 21 Other consumables and parts for the multimode inlet MMI Description quantity Part number ...

Page 131: ...8 Maintaining Your GC 131 Exploded Parts View of the MMI Septum retainer nut Insert assembly Septum Merlin cap Merlin Microseal O ring Liner Split vent line Ferrule Column nut Insulation Cryo Insulation cup Inlet base Foil ...

Page 132: ...ce method and wait for the GC to become ready 3 When the GC becomes ready open the GC oven door 4 Thread the column adapter nut onto the base of the inlet The nut must spin freely before it can be used to install a column WARNING Be careful The oven and or inlet may be hot enough to cause burns If either is hot wear heat resistant gloves to protect your hands Column nut adapter Orient as shown ...

Page 133: ...ge 128 4 Place the column on the hanger with the ends pointing up and the label to the front WARNING Do not use hydrogen as the carrier for conditioning It could vent into the oven and present an explosion hazard WARNING Be careful The oven and or inlet may be hot enough to cause burns If either is hot wear heat resistant gloves to protect your hands WARNING Wear safety glasses to protect your eye...

Page 134: ... by supporting it against the column cutter opposite the scribe Inspect the end with a magnifying loupe to make certain there are no burrs or jagged edges 8 Wipe the column walls with a tissue dampened with isopropanol to remove fingerprints and dust 9 Position the column so it extends 10 to 12 mm above the end of the ferrule Slide the septum up the column to hold the column nut at this position F...

Page 135: ...er tighten the column nut until it begins to grip the column 12 While holding the inlet base with one wrench use the second wrench to tighten the column nut an additional 1 4 to 1 2 turn so that the column cannot be pulled from the fitting with gentle pressure 13 Configure the new column If using the optional barcode scanner scan the column directly into your data system software configuration the...

Page 136: ...mn is installed at both inlet and detector establish a flow of carrier gas and purge as recommended by the column manufacturer 17 Restore the analytical method For FID or FPD immediately turn off the flame For NPD immediately turn off the bead 18 After the GC becomes ready wait 10 minutes then ignite the detector flame or bead 19 Allow the oven inlet and detector to equilibrate at operating temper...

Page 137: ...the septum or Merlin Microseal from the insert assembly Do not gouge or scratch the interior of the insert assembly 5 Firmly press the new septum or Merlin Microseal into the fitting The metal parts side of the Merlin Microseal should face down toward the oven 6 Install the septum retainer nut or Merlin cap and finger tighten Tighten the septum retainer nut until the C ring is about 1 mm above the...

Page 138: ...ng Your GC 8 Maintaining the MMI 7 Restore the analytical method 8 Reset the septum EMF counter See To Reset an EMF Counter in the Operation Manual CAUTION Overtightening the septum nut can cause contamination 1 mm ...

Page 139: ...al Tweezers Compressed filtered dry air or nitrogen 2 Load the inlet maintenance method and wait for the GC to become ready 3 Slide the locking tab forward counterclockwise Lift the septum assembly straight up and away from the inlet to avoid chipping or breaking the liner 4 Remove the septum retainer nut or Merlin cap WARNING Be careful The oven and or inlet may be hot enough to cause burns If ei...

Page 140: ...ogen to blow away the pieces of steel wool and septum 8 Line up the tab on the bottom of the septum assembly with the slot on the insert assembly and push down to connect Slide the locking tab to the left 9 Firmly press the new septum or Merlin Microseal into the fitting See To Change the Septum on the MMI on page 137 10 Replace the septum retainer nut or Merlin cap and finger tighten See To Chang...

Page 141: ... Lint free gloves 2 Load the inlet maintenance method and wait for the GC to become ready 3 Slide the locking tab forward counterclockwise Lift the septum assembly straight up and away from the inlet to avoid chipping or breaking the liner 4 Loosen the O ring from the sealing surface with tweezers WARNING Be careful The oven and or inlet may be hot enough to cause burns If either is hot wear heat ...

Page 142: ...142 Maintaining Your GC 8 Maintaining the MMI 5 Grasp the liner with tweezers and pull it out 6 Inspect the surface of the seal for contamination If required clean with cotton swabs ...

Page 143: ...wn to connect Slide the locking tab to the back 10 Turn on the inlet Allow the inlet and column to purge with carrier gas for 15 minutes before heating the inlet or the column oven 11 Bakeout contaminants See To Bakeout Contaminants from the MMI on page 149 12 Restore the analytical method 13 Reset the liner counter See To Reset an EMF Counter in the Operation Manual 14 If using the optional barco...

Page 144: ...ove the pneumatics cover top back of GC 4 Remove the retaining clip WARNING Be careful The oven and or inlet may be hot enough to cause burns If either is hot wear heat resistant gloves to protect your hands WARNING The split vent trap may contain residual amounts of any samples or other chemicals you have injected into the GC Follow your company s safety procedures for handling these types of sub...

Page 145: ... careful not to stress the tubing between the split vent valve and the trap 7 Remove the old filter cartridge and two O rings 8 Verify the new O rings are seated properly on the new filter cartridge 9 Install the new filter cartridge then reassemble the trap Do not fully tighten yet 10 Place the filter trap assembly in the mounting bracket and install the retaining clip 11 Install the split vent v...

Page 146: ...146 Maintaining Your GC 8 Maintaining the MMI 14 Reset the EMF counter See To reset an EMF counter 15 Restore the analytical method 16 Reset the split vent trap counter 17 Install the pneumatics cover ...

Page 147: ...0 Contains 5 each abrasive swabs and 5 each cotton swabs Solvent for cleaning at least 25 mL of acetone isopropanol or hexane whichever is most appropriate for your sample matrix 100 mL beaker or similar container to the catch solvent rinse 2 Load the inlet maintenance method and wait for the GC to become ready 3 Turn off the GC 4 Remove the inlet liner See To Change the Liner and O Ring on the MM...

Page 148: ...sufficient The abrasive swab can be used multiple times 9 Using a second solvent moistened cotton swab wipe the bottom of the inlet to remove any residue Depending on the amount of use and maximum temperature used the bottom of the inlet may still show some oxidation light brown color This is normal and will not affect inlet performance Repeat steps 3 5 if necessary to remove any remaining deposit...

Page 149: ...emperature If the column is not attached to the detector cap the detector fitting 6 Set the inlet temperature to 300 C or 25 C above the normal operating temperature to bakeout contaminants from the inlet mostly through the split vent 7 Set the column oven 25 C above the GC method final oven temperature to bake contaminants from the column Do not exceed the column manufacturer s maximum temperatur...

Page 150: ...150 Maintaining Your GC 8 Maintaining the MMI ...

Page 151: ...et 155 To Clean the Septumless Head on the PTV Inlet 158 To Replace the Septumless Head PTFE Ferrule on the PTV Inlet 161 To Change the Septum on the PTV Inlet 163 To Clean the Septum Seat in the Septum Head Assembly of the PTV Inlet 165 To Change the Liner on the PTV Inlet 167 To Replace the Inlet Adapter for the PTV Inlet 170 To Replace the Filter in the Split Vent Line for the PTV Inlet 172 To ...

Page 152: ...ion tool for 3D ferrules G2617 80540 Table 23 Other consumables and parts for the PTV inlet Description Part number Syringe 5 µL 23 gauge fixed needle 9301 0892 Syringe 10 µL 23 gauge fixed needle 9301 0713 Syringe 50 µL 23 gauge fixed needle for large volume injections 5183 0318 Syringe 100 µL 23 gauge fixed needle for large volume injections 5183 2058 Split vent trap PM kit single cartridge 5188...

Page 153: ... mm id 5182 9762 Ferrules for Graphpak 2M inlet 0 20 mm id 5182 9756 10 pk Ferrules for Graphpak 2M inlet 0 25 mm id 5182 9768 10 pk Ferrules for Graphpak 2M inlet 0 32 mm id 5182 9769 10 pk Ferrules for Graphpak 2M inlet 0 53 mm id 5182 9770 10 pk Split nut for Graphpak adapter 5062 3525 Includes 1 adapter 1 silver seal and 1 split column nut Table 23 Other consumables and parts for the PTV inlet...

Page 154: ...ptum Septum head Septumless head assembly Kalrez seal Merlin cap Merlin Microseal Guide cap Valve body Pressure spring Viton seal Sealing element PTFE ferrule Graphpak 3D ferrule Liner PTV inlet assembly Silver seal Graphpak inlet adapter Ferrule for Graphpak adapter Column nut Carrier gas tube Ferrule ...

Page 155: ...ter See To Replace the Inlet Adapter for the PTV Inlet on page 170 4 Place the column on the hanger with the ends pointing up and the label to the front 5 Place a Graphpak 2M ferrule onto the column with the graphite facing up towards the inlet WARNING Be careful The oven and or inlet may be hot enough to cause burns If either is hot wear heat resistant gloves to protect your hands WARNING Wear sa...

Page 156: ...to make certain that there are no burrs or jagged edges 8 Wipe the column walls with a tissue dampened with isopropanol to remove fingerprints and dust 9 Position the column so it extends 17 mm above the end of the ferrule Mark the column behind the ferrule with typewriter correction fluid or a marker Slide the nut over the column 10 Insert the column into the adapter and finger tighten the column...

Page 157: ...e TCD To Install a Capillary Column in the uECD To install a Capillary Column in the FPD Plus To Install a Capillary Column Adapter in the FPD 15 After the column is installed at both inlet and detector establish a flow of carrier gas and purge as recommended by the column manufacturer 16 Restore the analytical method For FPD immediately turn off the flame For NPD immediately set the bead voltage ...

Page 158: ...ves 5 16 inch wrench Lint free gloves 2 Load the inlet maintenance method and wait for the GC to become ready 3 Disconnect the carrier gas line 4 Unscrew and remove the septumless head assembly from the inlet 5 Unscrew the sealing element from the head assembly and carefully remove the Viton seal and the pressure spring WARNING Be careful The oven and or inlet may be hot enough to cause burns If e...

Page 159: ...e the Septumless Head PTFE Ferrule on the PTV Inlet on page 161 12 Wearing clean lint free gloves reassemble the head in reverse order Be sure that the seals and the pressure spring are not damaged 13 Finger tighten the septumless head then tighten an additional 1 8 turn with a wrench 14 Reconnect the carrier gas line 15 Check for leaks if necessary slightly tighten the guide cap with the syringe ...

Page 160: ...160 Maintaining Your GC 9 Maintaining the PTV Inlet If the head leaks without the syringe inserted replace the Kalrez and Viton seals 16 Restore the analytical method ...

Page 161: ...ad and remove the PTFE ferrule 4 Push the guide cap and replacement ferrule over the syringe needle so that at least 10 mm of the needle tip is exposed 5 Guide the end of the needle into the septumless head until the ferrule meets the septumless head 6 Loosely install the guide cap 7 If not configured configure the column 8 Put the inlet into Splitless mode 9 Set the column flow to 5 mL min and th...

Page 162: ...rep Run twice 11 Observe the inlet Total Flow Tighten the guide cap until the Total Flow stops decreasing typically near 8 mL min 12 Remove the syringe from the inlet and press Stop 13 Restore the analytical method 14 Reset the EMF counter See To Reset an EMF Counter in the Operation Manual ...

Page 163: ... the septum or Merlin Microseal from the retainer nut Do not gouge or scratch the interior of the septum head 5 Firmly press the new septum or Merlin Microseal into the fitting The metal parts side of the Merlin Microseal should face down toward the oven 6 Replace the septum retainer nut or Merlin cap and finger tighten Tighten the septum retainer nut until the C ring is about 1 mm above the nut W...

Page 164: ...164 Maintaining Your GC 9 Maintaining the PTV Inlet 7 Restore the analytical method 8 Reset the septum counter See To Reset an EMF Counter in the Operation Manual 1 mm ...

Page 165: ...e the septum or Merlin Microseal from the retainer nut Do not gouge or scratch the interior of the septum head 6 Scrub the residue from the retainer nut and septum holder with a small piece of rolled up steel wool and tweezers Do not do this over the inlet 7 Use compressed air or nitrogen to blow away the pieces of steel wool and septum 8 Replace the septum head assembly on the inlet Finger tighte...

Page 166: ...PTV Inlet 10 Replace the septum retainer nut or Merlin cap and finger tighten See To Change the Septum on the PTV Inlet on page 163 11 Restore the analytical method 12 Reset the septum counter See To Reset an EMF Counter in the Operation Manual ...

Page 167: ...rom the inlet For septumless head disconnect the carrier gas line and unscrew and remove the septumless head assembly from the inlet For septum head loosen the septum head assembly from the inlet Lift the head to clear the inlet and push to either side Do not bend the 1 16 inch lines too much 4 Grasp the liner by the Graphpak 3D ferrule Remove the liner from the inlet WARNING Be careful The oven a...

Page 168: ...ite end towards the compression fitting Slide the ferrule so that about 2 mm of the liner is exposed beyond the ferrule 8 Slide the compression fitting up to meet the ferrule Finger tighten the ferrule guide onto the compression fitting 9 Unscrew and remove the ferrule guide 10 Slide the compression fitting off the other end of the liner The ferrule should now be set with 1 mm of the liner exposed...

Page 169: ...r gas line For septum head align the head with the inlet and manually engage the free spinning nut to the inlet Tighten 1 2 turn past finger tight with a wrench 13 Check all connections for leaks If necessary tighten them again by hand 14 Restore the analytical method 15 Configure the new liner If using the optional barcode scanner scan the liner directly into your data system software configurati...

Page 170: ...ch Lint free gloves 3 Load the inlet maintenance method and wait for the GC to become ready 4 Unscrew the column nut from the adapter Remove the nut and the column from the inlet Table 24 PTV inlet adapters Column id Inlet adapter number Includes 1 adapter 1 silver seal and 1 split column nut Part number 0 20 mm 31 5182 9754 0 25 to 0 33 mm 45 5182 9761 0 53 mm 70 5182 9762 WARNING Be careful The ...

Page 171: ... Tighten an additional 1 16 to 1 8 turn with a wrench overtightening will damage the inlet 7 Install the column See To Install a Capillary Column with the PTV Inlet on page 155 8 Check the adapter for leaks 9 Restore the analytical method 10 Reset the silver seal EMF counter See To Reset an EMF Counter in the Operation Manual Silver seal Graphpak inlet adapter Column nut Ferrule for Graphpak adapt...

Page 172: ...ady 3 Remove the pneumatics cover top back of GC 4 Remove the retaining clip WARNING Be careful The oven and or inlet may be hot enough to cause burns If either is hot wear heat resistant gloves to protect your hands WARNING The split vent trap may contain residual amounts of any samples or other chemicals you have injected into the GC Follow your company s safety procedures for handling these typ...

Page 173: ... Be careful not to stress the tubing between the split vent valve and the trap 7 Remove the old filter cartridge and two O rings 8 Verify the new O rings are seated properly on the new filter cartridge 9 Install the new filter cartridge then reassemble the trap Do not fully tighten yet 10 Place the filter trap assembly in the mounting bracket and install the retaining clip 11 Install the split ven...

Page 174: ...4 Maintaining Your GC 9 Maintaining the PTV Inlet 14 Reset the EMF counter See To reset an EMF counter 15 Restore the analytical method 16 Reset the split vent trap counter 17 Install the pneumatics cover ...

Page 175: ...ting temperature If the column is not attached to the detector cap the detector fitting 6 Set the inlet temperature to 300 C or 25 C above the normal operating temperature to bakeout contaminants from the inlet mostly through the split vent 7 Set the column oven 25 C above the GC method final oven temperature to bake contaminants from the column Do not exceed the column manufacturer s maximum temp...

Page 176: ...176 Maintaining Your GC 9 Maintaining the PTV Inlet ...

Page 177: ... Consumables and Parts for the VI 178 Exploded Parts View of the VI 180 To Install a Capillary Column with the VI 181 To Remove the VI Interface 185 To Clean the VI 187 To Install the VI Interface 189 To Replace the Filter in the Split Vent Line for the VI 190 To Bakeout Contaminants from the VI Inlet 193 ...

Page 178: ...antity 530 Ferrule Vespel graphite 0 8 mm id 0 45 mm and 0 53 mm capillary columns 5062 3512 10 pk Ferrule graphite 1 0 mm id 0 53 mm capillary columns 5080 8773 10 pk Ferrule graphite 0 8 mm id 0 53 mm capillary columns 500 2118 10 pk Column nut finger tight for 0 53 mm columns Connect column to inlet or detector 5020 8293 320 Ferrule Vespel graphite 0 5 mm id 0 32 mm capillary columns 5062 3514 ...

Page 179: ...olumn nut finger tight for 100 to 320 mm columns Connect column to inlet or detector 5020 8292 All Ferrule no hole Testing 5181 3308 10 pk Capillary column blanking nut Testing use with any ferrule 5020 8294 Column nut universal Connect column to inlet or detector 5181 8830 2 pk Column cutter ceramic wafer Cutting capillary columns 5181 8836 4 pk Pencil diamond tipped Cutting capillary columns 420...

Page 180: ...180 Maintaining Your GC 10 Maintaining the VI Exploded Parts View of the VI Clamping plate Volatiles interface Ferrule column Column nut long Nut Ferrule ...

Page 181: ... front 4 Place a septum long capillary column nut and ferrule on the column Use a long column nut See Consumables and Parts for the VI on page 178 WARNING Be careful The oven and or inlet may be hot enough to cause burns If either is hot wear heat resistant gloves to protect your hands WARNING Wear safety glasses to protect your eyes from flying particles while handling cutting or installing glass...

Page 182: ...ge 185 5 Score the column using a glass scribing tool The score must be square to ensure a clean break 6 Break off the column end by supporting it against the column cutter opposite the scribe Inspect the end with a magnifying loupe to make certain that there are no burrs or jagged edges 7 Wipe the column walls with a tissue dampened with isopropanol to remove fingerprints and dust Ferrule Column ...

Page 183: ...he column attached to the inlet and detector establish a flow of carrier gas through the transfer line Purge as recommended by the column manufacturer 14 Condition the column per the manufacturer s recommendation See To Condition a Capillary Column 15 Install the column into the detector See To Install a Capillary Column in the FID To Install a Capillary Column in the NPD To Install a Capillary Co...

Page 184: ...operating temperature then retighten the fittings 20 Reset the column EMF counters See To Reset an EMF Counter in the Operation Manual WARNING Be careful The oven inlet and or detector may be hot enough to cause burns If the oven inlet or detector is hot wear heat resistant gloves to protect your hands ...

Page 185: ...dy 3 Remove the column 4 Remove the transfer line by loosening the nut then lift it from the interface 5 Loosen the five inlet cover screws and remove the inlet cover 6 Remove the clamping plate from the interface by loosening the captive screw 7 Lift the interface out of the heater block WARNING Be careful The interface may be hot enough to cause burns If the interface is hot wear gloves to prote...

Page 186: ...186 Maintaining Your GC 10 Maintaining the VI ...

Page 187: ...face using an ultrasonic bath Sonicate twice then rinse and air dry 6 Inspect the split vent line If clogged contact Agilent for service WARNING Be careful The oven and or inlet may be hot enough to cause burns If either is hot wear heat resistant gloves to protect your hands WARNING The split vent trap and line may contain residual amounts of any samples or other chemicals you have injected into ...

Page 188: ...188 Maintaining Your GC 10 Maintaining the VI 7 Install the interface See To Install the VI Interface on page 189 ...

Page 189: ...ng lines and finger tighten the nuts Tighten an additional 1 4 turn with a wrench 3 Place the interface into the heater block and reseat the tubing as needed 4 Install the clamping plate and tighten the screw 5 Install the inlet cover Be sure the cover does not damage any tubing 6 Attach the sample transfer line 7 Install the column See To Install a Capillary Column with the VI on page 181 ...

Page 190: ...ve the pneumatics cover top back of GC 4 Remove the retaining clip WARNING Be careful The oven and or inlet may be hot enough to cause burns If either is hot wear heat resistant gloves to protect your hands WARNING The split vent trap may contain residual amounts of any samples or other chemicals you have injected into the GC Follow your company s safety procedures for handling these types of subs...

Page 191: ... careful not to stress the tubing between the split vent valve and the trap 7 Remove the old filter cartridge and two O rings 8 Verify the new O rings are seated properly on the new filter cartridge 9 Install the new filter cartridge then reassemble the trap Do not fully tighten yet 10 Place the filter trap assembly in the mounting bracket and install the retaining clip 11 Install the split vent v...

Page 192: ...192 Maintaining Your GC 10 Maintaining the VI 14 Reset the EMF counter See To reset an EMF counter 15 Restore the analytical method 16 Reset the split vent trap counter 17 Install the pneumatics cover ...

Page 193: ... temperature If the column is not attached to the detector cap the detector fitting 6 Set the inlet temperature to 300 C or 25 C above the normal operating temperature to bakeout contaminants from the inlet mostly through the split vent 7 Set the column oven 25 C above the GC method final oven temperature to bake contaminants from the column Do not exceed the column manufacturer s maximum temperat...

Page 194: ...194 Maintaining Your GC 10 Maintaining the VI ...

Page 195: ...llary Column Adapter on an Adaptable FID 203 To Install a Capillary Column in the FID 205 To Replace the FID Collector Assembly 209 To Replace an FID Jet 212 To Perform Maintenance on the FID Collector Assembly 216 To Check the FID Leakage Current 224 To Check the FID Baseline 225 To Install the FID Insulation Cup Assembly Adaptable FID Only 226 To Install the Optional FID PTFE Chimney Insert 228 ...

Page 196: ...apillary columns 5080 8853 10 pk Column nut finger tight for 100 to 320 mm columns Connect column to inlet or detector 5020 8292 250 Ferrule Vespel graphite 0 4 mm id 0 1 mm 0 2 mm and 0 25 mm capillary columns 5181 3323 10 pk Ferrule graphite 0 5 mm id 0 1 mm 0 2 mm 0 25 mm and 0 32 mm capillary columns 5080 8853 10 pk Column nut finger tight for 100 to 320 mm columns Connect column to inlet or d...

Page 197: ...D 1 4 inch packed column adapter 19231 80530 Insulation 19234 60715 1 pk Insulation cup assembly 19234 60700 Nut 1 4 inch brass for packed column adapters 5180 4105 10 pk Ferrule Vespel 1 4 inch for packed column adapters 5080 8774 10 pk Table 29 Jets for capillary adaptable fittings Jet type Part number Jet tip id Length Capillary 19244 80560 0 29 mm 0 011 inch 61 5 mm Capillary high temperature ...

Page 198: ... Collector nut 19231 20940 Spring washer 3050 1246 Ignitor castle 19231 20910 Ignitor castle Hastelloy 19231 21060 Upper lower collector insulator G1531 20700 Collector body G1531 20690 Collector body Hastelloy G1531 21090 Spanner nut collector 19231 20980 Collector mount G1531 20550 Collector housing G1531 20740 Gasket 5180 4165 12 pk Ignitor glow plug assembly with O ring 19231 60680 ...

Page 199: ...ning the FID 11 Maintaining Your GC 199 Exploded Parts Views of the FID PTFE chimney 25 mm screws Collector assembly Gasket Jet Spring FID interconnect Mounting pallet Ferrule Column adapter Ferrule Column nut ...

Page 200: ...n Adaptable FID only Insulation cup assembly Adaptable FID only 25 mm screws Collector assembly Collector nut Spring washer Ignitor Upper collector insulator Collector body Spanner nut collector Collector mount Lower collector insulator Collector housing Gasket Ignitor glow plug assembly with O ring Ignitor cable assembly ...

Page 201: ... the jet tends to clog with silicon dioxide In simulated distillation applications the high boiling hydrocarbons tend to clog the jet For capillary optimized fittings select a jet from Table 32 For adaptable fittings select a jet from Table 33 Capillary optimized fitting Adaptable fitting Detector fitting Adapter Table 32 Jets for capillary optimized fittings Figure 1 ID Jet type Part number Jet t...

Page 202: ...p id Length 1 Capillary 19244 80560 0 29 mm 0 011 inch 61 5 mm 2 Capillary high temperature use with simulated distillation 19244 80620 0 47 mm 0 018 inch 61 5 mm 3 Packed 18710 20119 0 46 mm 0 018 inch 63 6 mm 4 Packed wide bore use with high bleed applications 18789 80070 0 76 mm 0 030 inch 63 6 mm Figure 4 Capillary adaptable jets ...

Page 203: ...aintenance method and wait for the GC to become ready 3 Assemble the nut and ferrule onto the adapter 4 Insert the adapter straight into the detector base as far as possible 5 Hold the adapter in this position and finger tighten the nut WARNING Be careful The oven inlet and or detector may be hot enough to cause burns If the oven inlet or detector is hot wear heat resistant gloves to protect your ...

Page 204: ...204 Maintaining Your GC 11 Maintaining the FID 6 Tighten an additional 1 4 turn with a wrench Adaptable fitting Detector fitting Adapter ...

Page 205: ...sing the adaptable detector verify that the adapter is installed See To Attach a Capillary Column Adapter on an Adaptable FID on page 203 WARNING Be careful The oven inlet and or detector may be hot enough to cause burns If the oven inlet or detector is hot wear heat resistant gloves to protect your hands WARNING Wear safety glasses to protect your eyes from flying particles while handling cutting...

Page 206: ...6 Break off the column end by supporting it against the column cutter opposite the scribe Inspect the end with a magnifying loupe to make certain there are no burrs or jagged edges 7 Wipe the column walls with a tissue dampened with isopropanol to remove fingerprints and dust 8 Install the capillary column CAUTION Wear clean lint free gloves to prevent contamination of parts with dirt and skin oil...

Page 207: ...e column so it extends above the ferrule by 48 mm capillary optimized fitting or 68 mm adaptable fitting Slide the septum up to hold the column nut and ferrule at this fixed position c Insert the column into the detector Slide the nut and ferrule up the column to the detector base Finger tighten the column nut until it grips the column d Adjust the column not the septum position so that the septum...

Page 208: ...208 Maintaining Your GC 11 Maintaining the FID ...

Page 209: ... on page 196 T 20 Torx screwdriver 1 4 inch nut driver Tweezers Lint free gloves 2 Load the GC maintenance method and wait for the GC to become ready 3 Disconnect the ignitor cable assembly 4 Remove the three screws holding the collector assembly to the mounting pallet CAUTION To avoid contaminating the FID wear clean lint free gloves when handling the collector assembly ...

Page 210: ...ssembly into the housing 9 Insert the three screws and tighten to 18 inch pounds 10 Connect the ignitor extension cable 11 Verify assembly a Check the FID leakage current See To Check the FID Leakage Current on page 224 b Check the FID baseline See To Check the FID Baseline on page 225 CAUTION This step exposes the interconnect spring Be careful not to touch or disfigure the spring while working o...

Page 211: ...Maintaining the FID 11 Maintaining Your GC 211 12 Reset the EMF counter See To Reset an EMF Counter in the Operation Manual ...

Page 212: ... installed remove the capillary column from the detector 4 Remove the FID collector assembly and place it on a clean cloth See To Replace the FID Collector Assembly on page 209 WARNING Be careful The oven and or detector may be hot enough to cause burns If the detector is hot wear gloves to protect your hands WARNING Wear safety glasses to protect your eyes from flying particles while handling cut...

Page 213: ...osen the jet then lift it out of the housing with tweezers 7 Clean the detector base cavity using solvent a swab and compressed air or nitrogen 8 Use tweezers to lower the new jet into the housing CAUTION Handle the clean or new jet only with tweezers or wear gloves Interconnector spring ...

Page 214: ...olumn in the FID on page 205 b After the column is installed at both inlet and detector establish a flow of carrier gas and purge as recommended by the column manufacturer c Check the FID leakage current See To Check the FID Leakage Current on page 224 d Bakeout the detector See To Bakeout the FID on page 229 e Restore the analytical method CAUTION Do not overtighten the jet Overtightening may per...

Page 215: ...ing the FID 11 Maintaining Your GC 215 f Allow the oven inlet and detector to equilibrate at operating temperature then retighten the fittings 13 Check the FID baseline See To Check the FID Baseline on page 225 ...

Page 216: ...x screwdriver 1 4 inch nut driver Tweezers 5 16 inch wrench Lint free gloves Clean cloth 2 Load the GC maintenance method and wait for the GC to become ready NOTE Perform only the steps and gather only the parts that apply to the desired maintenance task s CAUTION To avoid contaminating the FID wear clean lint free gloves when handling the collector assembly WARNING Be careful The oven and or dete...

Page 217: ...able assembly b Loosen the ignitor with a wrench c Turn the nut counterclockwise by hand Remove the ignitor and copper washer 4 If replacing only the FID ignitor assembly with copper washer skip to step 16 for assembly 5 Remove the three screws that hold the collector mount to the FID thermal strap ...

Page 218: ...sen the collector nut b Remove the collector nut and the spring washer c Lift the castle out of the collector housing When removing the castle some of the collector parts may be attached Set these on a clean cloth to protect from scratches or dirt CAUTION This step exposes the interconnect spring Be careful not to touch or disfigure the spring while working on the FID Any dirt or bending will redu...

Page 219: ...10 Remove the collector and insulators a If needed remove the collector and upper insulator from the FID housing The lower insulator may come out with the collector but often remains in the FID housing Place the parts on a clean cloth b Remove the lower insulator with tweezers and place the parts on a clean cloth ...

Page 220: ...ly is now completely disassembled Reassemble as follows 13 Use tweezers to install a new gasket onto the housing being sure that it lays flat on the brass surface 14 Install the collector insulators a Insert one of the insulators into the base of the housing Seat the insulator with the flat surface facing out of the housing b Insert the long end of collector into the housing and lower insulator ...

Page 221: ...op of the collector with the flat surface facing towards the housing 15 Install the FID ignitor castle a Orient the castle so that the threaded hole for the ignitor faces toward the electronics b Insert the FID castle into the collector housing c Install the spring washer over the castle ...

Page 222: ...ld be airtight Maintain the orientation of the ignitor hole with the base as shown below 16 Install the FID ignitor a Insert the ignitor and copper seal into the threaded hole of the castle Keep the mating threads clean b Tighten the ignitor with a wrench Ignition requires a good electrical contact that is free of any dirt ...

Page 223: ...pounds 19 Connect the ignitor extension cable 20 Verify assembly a Check the FID leakage current See To Check the FID Leakage Current on page 224 b Bakeout the detector See To Bakeout the FID on page 229 c Check the FID baseline See To Check the FID Baseline on page 225 21 Reset the EMF counters See To Reset an EMF Counter in the Operation Manual ...

Page 224: ...ature or 300 C 2 Turn off the FID flame 3 Press Front Detector or Back Detector then scroll to Output 4 Verify that the output is stable and 1 0 pA If the output is unstable or 1 0 pA turn off the GC and check for proper assembly of the upper FID parts and contamination If this contamination is confined to the detector bakeout the FID See To Bakeout the FID on page 229 5 Turn on the flame ...

Page 225: ...perature to 35 C 3 Press Front Detector or Back Detector then scroll to Output 4 When the flame is lit and the GC is ready verify that the output is stable and 20 pA If the output is not stable or 20 pA the system or gas may be contaminated If this contamination is isolated to the detector then bakeout the FID See To Bakeout the FID on page 229 ...

Page 226: ...ecome ready 3 Assemble the insulation in the cup Line up the slots in the insulation with the slot in the cup Capillary columns should be attached to the detector before installing the cup When attaching a packed column to the detector cap the detector fitting before installing the cup to prevent insulation contamination of the detector WARNING Be careful The detector may be hot enough to cause bu...

Page 227: ...over the hole 5 From inside the oven with the column installed pass the column through the slot in the cup Move the cup up over the detector fitting so that the cup touches the top of the oven You should be able to see the groove in the fitting 6 Release the spring into the groove of the fitting ...

Page 228: ...Chimney Insert 1 Light the FID flame 2 Insert the PTFE chimney into the FID castle WARNING Be careful The detector may be hot enough to cause burns If the detector is hot wear heat resistant gloves to protect your hands NOTE When installed the PTFE chimney insert prevents ignition ...

Page 229: ...adapter column nut and no hole ferrule Maintain inert carrier gas flow through the column or remove the column from the GC 4 Set the detector temperature at 350 to 375 C 5 Set normal operating flows 6 Light the FID flame 7 Set the oven temperature to 250 C or 25 C above the normal maximum operating temperature Do not exceed the column s temperature limit WARNING If using hydrogen as a carrier gas ...

Page 230: ...than the initial baseline 9 Restore the analytical method and allow the FID to equilibrate 10 Check the FID output value It should be lower than the first reading If it is not contact your Agilent service representative Without a column installed a clean system baseline should be 20 pA 11 If the column is not installed in the FID install it See To Install a Capillary Column in the FID on page 205 ...

Page 231: ...12 Maintaining the TCD Consumables and Parts for the TCD 232 To Install a Capillary Column in the TCD 234 To Install the Optional TCD Capillary Column Adapter 236 To Install a Capillary Column with the Optional TCD Capillary Column Adapter 237 To Bakeout Contaminants from the TCD 240 ...

Page 232: ...ns 10 pk 5182 9673 Front ferrule 0 32 mm capillary columns 10 pk 5182 9676 Front ferrule 0 1 mm 0 2 mm and 0 25 mm capillary columns 10 pk 5182 9677 1 8 inch Swagelok plug 5180 4124 1 4 inch packed 1 4 inch packed column adapter G1532 20710 1 8 inch id Vespel graphite ferrule 10 pk 0100 1332 Nut 1 8 inch id brass 10 pk 5180 4103 Ferrule Vespel 1 4 inch 10 pk 5080 8774 1 4 inch id tubing nut brass ...

Page 233: ...5 mm capillary columns 5181 3323 10 pk Ferrule graphite 0 5 mm id 0 1 mm 0 2 mm 0 25 mm and 0 32 mm capillary columns 5080 8853 10 pk Column nut finger tight for 100 to 320 mm columns Connect column to inlet or detector 5020 8292 100 and 200 Ferrule Vespel graphite 0 37 mm id 0 1 mm and 0 2 mm capillary columns 5062 3516 10 pk Ferrule Vespel graphite 0 4 mm id 0 1 mm 0 2 mm and 0 25 mm capillary c...

Page 234: ...e the ferrules and 1 8 inch brass Swagelok nut on the column WARNING Be careful The oven and or inlet may be hot enough to cause burns If the inlet is hot wear heat resistant gloves to protect your hands WARNING Wear safety glasses to protect your eyes from flying particles while handling cutting or installing glass or fused silica capillary columns Use care in handling these columns to prevent pu...

Page 235: ...nd with a magnifying loupe to make certain that there are no burrs or jagged edges 6 Wipe the column walls with a tissue dampened with isopropanol to remove fingerprints and dust 7 Insert the column into the detector until it bottoms 8 Slide the column nut and ferrules up the column to the detector and finger tighten the nut 9 Pull out 1 mm of column Tighten the nut an additional 1 4 turn with a w...

Page 236: ...t 1 8 inch Vespel ferrule Lint free gloves 2 Load the GC maintenance method and wait for the GC to become ready 3 Assemble the brass nut and ferrule onto the capillary column adapter 4 Install the adapter assembly into the detector fitting and tighten finger tight Use a wrench to tighten until snug CAUTION Wear clean lint free gloves to prevent contamination of parts with dirt and skin oils Capill...

Page 237: ...d ferrule on the column 4 Score the column using a glass scribing tool The score must be square to ensure a clean break WARNING Be careful The detector may be hot enough to cause burns If the detector is hot wear heat resistant gloves to protect your hands WARNING Wear safety glasses to protect your eyes from flying particles while handling cutting or installing glass or fused silica capillary col...

Page 238: ...gnifying loupe to make certain there are no burrs or jagged edges 6 Wipe the column walls with a tissue dampened with isopropanol to remove fingerprints and dust 7 Gently insert the column into the detector until it bottoms Do not attempt to force it further 8 Slide the column nut and ferrule up the column to the adapter and tighten the nut finger tight Good Bad ...

Page 239: ...Maintaining the TCD 12 Maintaining Your GC 239 9 Pull the column out 1 mm Use a wrench to tighten the nut an additional 1 4 turn The column should not move ...

Page 240: ...l a Capillary Column in the TCD on page 234 8 Load the analytical method 9 Allow the oven inlet and detector to equilibrate at operating temperature then re tighten the fittings CAUTION If the column is not installed you must turn off the TCD filament and cap the detector column fitting to prevent irreparable damage to the filament caused by oxygen entering the detector WARNING Be careful The dete...

Page 241: ...e the uECD Fused Silica Indented Mixing Liner and Install the Makeup Gas Adapter 247 To Install a Capillary Column in the uECD 251 To Install the Insulating Cup for the uECD 254 To Bakeout the uECD 256 This section describes the routine maintenance tasks for the micro Electron Capture Detector uECD For important regulatory and safety information for this detector refer to the general information b...

Page 242: ...avoided These materials include oxidizing compounds acids wet halogens wet nitric acid ammonium hydroxide hydrogen sulfide PCBs and carbon monoxide This list is not exhaustive but indicates the kinds of compounds that may cause damage to 63 Ni detectors WARNING In the extremely unlikely event that both the oven and the detector heated zone should go into thermal runaway maximum uncontrolled heatin...

Page 243: ... the latest revision of 10 CFR Part 20 including Appendix B or the applicable state regulation For other countries consult with the appropriate agency for equivalent requirements Agilent Technologies recommends a vent line internal diameter of 6 mm 1 4 inch or greater With a line of this diameter the length is not critical WARNING Do not use solvents to clean the uECD WARNING You may not open the ...

Page 244: ...column blanking nut 5020 8294 1 4 inch Detector adapter for 1 8 inch packed columns 19301 80530 Table 38 Nuts ferrules and hardware for capillary columns Column id mm Description Typical use Part number quantity 530 Ferrule Vespel graphite 0 8 mm id 0 45 mm and 0 53 mm capillary columns 5062 3512 10 pk Ferrule graphite 1 0 mm id 0 53 mm capillary columns 5080 8773 10 pk Ferrule graphite 0 8 mm id ...

Page 245: ...3 10 pk Ferrule graphite 0 5 mm id 0 1 mm 0 2 mm 0 25 mm and 0 32 mm capillary columns 5080 8853 10 pk Ferrule graphite 0 4 mm id 500 2114 10 pk Column nut finger tight for 100 to 320 mm columns Connect column to inlet or detector 5020 8292 All Ferrule no hole Testing 5181 3308 10 pk Capillary column blanking nut Testing use with any ferrule 5020 8294 Column nut universal Connect column to inlet o...

Page 246: ...ing Your GC 13 Maintaining the uECD Exploded Parts View of the uECD Vent line Warning tag Perforated cover Electrometer Ferrule Adapter nut Cap Liner Makeup gas adapter Insulation Insulation cup Ferrule Column nut ...

Page 247: ...p from the detector base 4 Remove the column from the makeup gas adapter 5 Remove the makeup gas adapter a Loosen the adapter nut with a wrench and slide out the makeup gas adapter from the uECD Remove the ferrule WARNING Be careful The oven and or detector may be hot enough to cause burns If the detector is hot wear gloves to protect your hands WARNING Wear safety glasses to protect your eyes fro...

Page 248: ...ed silica indented mixing liner and inspect Replace it if it is broken or contaminated with sample or graphite 8 Ultrasonically clean the adapter cap in methanol Clean the outer surfaces of the makeup gas adapter with methanol 9 Install the fused silica indented mixing liner into the makeup gas adapter then install the cap The indentation on the fused silica indented mixing liner must be at the ca...

Page 249: ...he detector fitting Be careful not to break the column end 12 Tighten the nut finger tight and then use a 9 16 inch wrench to tighten until snug If the adapter is properly installed the distance between the 1 4 inch nut and the bottom of the adapter will be 19 1 mm If the distance is 22 to 23 mm install the adapter into the detector fitting Indentation Fused silica indented mixing liner Cap Capill...

Page 250: ...aintaining Your GC 13 Maintaining the uECD 13 Attach the column See To Install a Capillary Column in the uECD on page 251 14 Reset the EMF counter See To Reset an EMF Counter in the Operation Manual 19 1 mm ...

Page 251: ...ethod and wait for the GC to become ready 4 Place a septum if the column id is 0 2 mm capillary column nut and ferrule on the column WARNING Be careful The oven and or detector may be hot enough to cause burns If the detector is hot wear gloves to protect your hands WARNING Wear safety glasses to protect your eyes from flying particles while handling cutting or installing glass or fused silica cap...

Page 252: ...magnifying loupe to make certain there are no burrs or jagged edges 7 Wipe the column walls with a tissue dampened with isopropanol to remove fingerprints and dust 8 Install the column If the column id is 200 um or more push the column into the adapter until it stops at the indentation Pull it back 1 to 2 mm and tighten the column nut with one 5 16 inch wrench on the adapter and another 1 4 inch w...

Page 253: ...m the end Insert column and nut into the adapter with the septum at the rear of the column nut and tighten the column nut with one 5 16 inch wrench on the adapter and another 1 4 inch wrench on the column nut 9 After heating the detector retighten the 9 16 inch makeup adapter nut and 1 4 inch column nut 70 1 mm Septum ...

Page 254: ... 3 Install the insulation in the cup Line up the slots in the insulation with the slot in the cup 4 Push the wire spring lever to the right to uncover the hole 5 With a capillary column installed to prevent insulation contamination of the detector slide the column into the slot on the insulation cup and place the cup over the makeup gas adapter WARNING Be careful The oven and or detector may be ho...

Page 255: ...the uECD 13 Maintaining Your GC 255 6 Slide the cup up so that the cup touches the top of the oven and you can see the groove in the makeup gas adapter 7 Release the spring into the groove of the makeup gas adapter ...

Page 256: ... Trace amounts of radioactive 63Ni may be removed during other procedures causing possible hazardous exposure to b and x radiation CAUTION To prevent possible hazardous contamination of the area with radioactive material the detector exhaust vent always must be connected to a fume hood or otherwise vented in compliance with the latest revision of 10 CFR Part 20 or with state regulations with which...

Page 257: ...ave the oven off to protect the column 7 If the column is installed in the uECD set the oven temperature to 250 C If the column is uninstalled leave the oven off to protect the column 8 Allow thermal cleaning to continue for several hours and then cool the system to normal operating temperatures The figure below shows detector output during a typical cleaning cycle 9 Check the uECD output value on...

Page 258: ...258 Maintaining Your GC 13 Maintaining the uECD ...

Page 259: ...he NPD 260 Exploded Parts View of the NPD 263 Selecting an NPD Jet 264 To Attach a Capillary Column Adapter on an Adaptable NPD 266 To Install a Capillary Column in the NPD 268 To Replace the NPD Bead Assembly 272 To Maintain the NPD Collector Ceramic Insulators and Jet 279 To Check the NPD Leakage Current 285 To Bakeout the NPD 286 ...

Page 260: ...sembly 5183 2007 NPD Blos bead assembly G3434 60806 Screw M4 10 mm 0515 2495 J clamp 1400 0015 NPD ceramic insulator kit Metal C rings top and bottom Ceramic insulators upper and lower 5182 9722 Insulation cup 19234 60720 NPD chemical sample kit solution of 0 65 ppm azobenzene 1000 ppm octadecane 1 ppm malathion in isooctane 3 ampoules 18789 60060 NPD lid standoff G1534 20590 Column adapters for a...

Page 261: ...18 inch 61 5 mm Packed 18710 20119 0 46 mm 0 018 inch 63 6 mm Table 42 Nuts ferrules and hardware for capillary columns Column id mm Description Typical use Part number quantity 530 Ferrule Vespel graphite 0 8 mm id 0 45 mm and 0 53 mm capillary columns 5062 3512 10 pk Ferrule graphite 1 0 mm id 0 53 mm capillary columns 5080 8773 10 pk Ferrule graphite 0 8 mm id 0 53 mm capillary columns 500 2118...

Page 262: ... 10 pk Ferrule graphite 0 5 mm id 0 1 mm 0 2 mm 0 25 mm and 0 32 mm capillary columns 5080 8853 10 pk Ferrule graphite 0 4 mm id 500 2114 10 pk Column nut finger tight for 100 to 320 mm columns Connect column to inlet or detector 5020 8292 All Ferrule no hole Testing 5181 3308 10 pk Capillary column blanking nut Testing use with any ferrule 5020 8294 Column nut universal Connect column to inlet or...

Page 263: ... NPD NPD cover Insulation cup Ferrule Column nut Collector Insulation Ceramic insulator Metal C ring top Electrometer NPD lid standoff Metal C ring bottom Column adapter J clamp Bead assembly cable Insulation Ceramic insulator upper Lid Bead assembly Metal C ring bottom Jet ...

Page 264: ...s to clog with silicon dioxide For capillary optimized fittings select one of the following from Table 43 For adaptable fittings select one of the following from Table 44 Capillary optimized fitting Adaptable fitting Detector fitting Adapter Table 43 Jets for capillary optimized fittings Figure 3 ID Jet type Part number Jet tip id Length 1 Capillary with extended jet recommended G1534 80580 0 29 m...

Page 265: ...Length 1 Capillary with extended jet recommended G1534 80590 0 29 mm 0 11 inch 70 5 mm 2 Capillary 19244 80560 0 29 mm 0 011 inch 61 5 mm 3 Capillary high temperature 19244 80620 0 47 mm 0 018 inch 61 5 mm 4 Packed 18710 20119 0 46 mm 0 018 inch 63 6 mm Figure 6 Adaptable NPD jets 1 2 3 4 1 2 3 4 70 5 mm 61 5 mm 61 5 mm 63 6 mm ...

Page 266: ...emble a brass nut and Vespel graphite ferrule onto the adapter WARNING Be careful The oven inlet and or detector may be hot enough to cause burns If the oven inlet or detector is hot wear heat resistant gloves to protect your hands WARNING Wear safety glasses to protect your eyes from flying particles while handling cutting or installing glass or fused silica capillary columns Use care in handling...

Page 267: ...Your GC 267 4 Insert the adapter straight into the detector base as far as possible 5 Hold the adapter in this position and finger tighten the nut 6 Tighten an additional 1 4 turn with a wrench Adaptable fitting Detector fitting Adapter ...

Page 268: ...ing the adaptable detector verify that the adapter is installed See To Attach a Capillary Column Adapter on an Adaptable NPD on page 266 WARNING Be careful The oven inlet and or detector may be hot enough to cause burns If the oven inlet or detector is hot wear heat resistant gloves to protect your hands WARNING Wear safety glasses to protect your eyes from flying particles while handling cutting ...

Page 269: ...5 Break off the column end by supporting it against the column cutter opposite the scribe Inspect the end with a magnifying loupe to make certain there are no burrs or jagged edges 6 Wipe the column walls with a tissue dampened with isopropanol to remove fingerprints and dust 7 Install the capillary column CAUTION Wear clean lint free gloves to prevent contamination of parts with dirt and skin oil...

Page 270: ...e column so it extends above the ferrule by 48 mm capillary optimized fitting or 68 mm adaptable fitting Slide the septum up to hold the column nut and ferrule at this fixed position c Insert the column into the detector Slide the nut and ferrule up the column to the detector base Finger tighten the column nut until it grips the column d Adjust the column not the septum position so that the septum...

Page 271: ...Maintaining the NPD 14 Maintaining Your GC 271 ...

Page 272: ...ta system versions you may need to use the GC keypad to set the voltage To do this the keypad must be unlocked and you must close the GC parameters screen of the data system Upload the revised setting then save the method and shut down the instrument session 3 Set Adjust Offset to Off 4 Cool the detector to 60 C or lower Leave all gas flows on To cool the detector faster raise the GC detector cove...

Page 273: ...73 7 Put on lint free gloves before touching any of the detector parts WARNING Be careful The oven or detector fittings may be hot enough to cause burns CAUTION Wear clean lint free gloves to prevent contamination of parts with dirt and skin oils ...

Page 274: ...aintaining Your GC 14 Maintaining the NPD 8 Twist the ring to disconnect the bead assembly cable Push and twist the lock so that the button slides up in the groove then pull the cable ends apart 1 2 3 1 2 3 ...

Page 275: ...d on the sides of the collector 11 Remove the protective cap covering the new bead 12 Mount the new bead assembly on the NPD lid Be careful not to bump the bead on the sides of the lid or collector 13 Replace the screws Finger tighten the first screw tighten the remaining screws normally and then completely tighten the first screw Do not overtighten the screws Bead assembly ...

Page 276: ...276 Maintaining Your GC 14 Maintaining the NPD 14 Carefully bend the bead assembly cable 90 15 Reconnect the bead assembly cable to the NPD cable and twist the ring to lock the connection ...

Page 277: ...PD operating gas flows 19 With all gases on heat the detector to 150 C and hold for about 15 minutes then increase the temperature to 250 C and hold for 15 minutes 20 Increase the temperature to operating value 310 to 320 C recommended Allow 15 minutes for equilibration 21 Check the NPD leakage current See To Check the NPD Leakage Current on page 285 If 2 0 pA verify bead installation or see the T...

Page 278: ...e Target offset field The default offset is 20 pA for Blos beads and 30 pA for white or black beads For white and black beads an offset of 25 to 30 pA is sufficient for most applications The bead life may be shortened at a higher offset 25 Reset the bead counter See To Reset an EMF Counter in the Operation Manual ...

Page 279: ...nol Jet see Selecting an NPD Jet on page 264 Lint free gloves Compressed filtered dry air or nitrogen 2 Set the bead voltage to 0 0 and Adjust Offset to Off 3 Check and note the NPD leakage current for reference See To Check the NPD Leakage Current on page 285 4 Load the GC maintenance method and wait for the GC to become ready 5 Remove the bead See To Replace the NPD Bead Assembly on page 272 CAU...

Page 280: ...he detector to free the interconnect Turn the electrometer to the right to obtain working space Be careful not to touch or bend the spring Be careful not to lose the EMI suppressor CAUTION This step exposes the interconnect spring Be careful not to touch or disfigure the spring while working on the FID Any dirt or bending will reduce the sensitivity of your detector CAUTION Wear clean lint free gl...

Page 281: ... two small metal C rings located above and below the collector If these parts are stuck together do not separate them If they are not stuck remember which metal ring was on top of the insulator and which was below it The pieces must be reassembled in the same orientation 12 If not replacing the jet skip to step 19 13 Remove the column from the detector Figure 7 NPD collector upper insulator and me...

Page 282: ...o Attach a Capillary Column Adapter on an Adaptable NPD on page 266 19 Use a cotton swab wetted with solvent to clean the residue from the inside of the collector and around the jet If the collector appears very dirty replace it with a new one 20 Install the bottom metal C ring the lower ceramic insulator and the top metal C ring See Figure 7 21 Install the collector CAUTION The adaptable NPD jet ...

Page 283: ...in their slots Hold the lid flat while each of the screws is tightened until they touch the lid Tighten each screw evenly 1 2 turn at a time until tight Do not overtighten 24 Slide the electrometer interconnect into the slot on the lid and lower the electrometer into the mounting tray Be careful not to touch or bend the spring 25 Install the J clamp and screws to secure the electrometer to the pal...

Page 284: ...er unless replaced After installing new collector parts the NPD leakage current should be lower See To Check the NPD Leakage Current on page 285 If the leakage current is abnormal check for proper reassembly of the detector especially where the electrometer interconnect contacts the collector assembly and for leaks 27 Reset the EMF counters See To Reset an EMF Counter in the Operation Manual ...

Page 285: ...f and the Bead Voltage to 0 00 V Leave the NPD at operating temperature Leave flows on or off 3 Press Front Detector or Back Detector then scroll to Output 4 Verify that the output leakage current is stable and 2 0 pA The output should slowly drop towards 0 0 pA and should stabilize in the tenths of a picoamp Current 2 0pA indicates a problem ...

Page 286: ...ector temperature at 25 C above the typical method setpoint temperature 7 Set the oven temperature to 250 C or 25 C above the normal maximum operating temperature Do not exceed the column s temperature limit 8 Hold at temperature for 15 to 30 minutes 9 If the column is not installed in the NPD install it See To Install a Capillary Column in the NPD on page 268 10 Restore the analytical method and ...

Page 287: ...NPD 14 Maintaining Your GC 287 12 Start the NPD bead Auto Adjust process See the 7890 Series Advanced User Guide for details Allow 4 to 24 hours for a new ceramic bead to equilibrate or 1 to 2 hours for a new Blos bead ...

Page 288: ...288 Maintaining Your GC 14 Maintaining the NPD ...

Page 289: ...es and Parts for the FPD 290 Exploded Parts View of the FPD 292 To Install a Packed Column Adapter in the FPD 293 To Attach a Capillary Column to the FPD 295 To Change the FPD Wavelength Filter 297 To Remove the FPD Cover 300 To Replace the FPD Ignitor 302 To Install the FPD Cover 304 Cleaning the FPD Brazement 305 ...

Page 290: ... Phosphorus filter 19256 80010 Exit tube assembly G3435 60330 O ring for exit tube assembly 0905 1014 Ignitor 19256 60750 Screw M3 6 mm T 10 0515 0680 Collet 19256 20690 Column measuring tool G3435 81380 Spring to secure photomultiplier tube 1460 1160 1 8 inch Packed column adapter assembly includes G3435 60350 1 8 inch Packed column adapter inert G3435 60340 1 8 inch Packed column adapter nut G34...

Page 291: ...5 mm capillary columns 5181 3323 10 pk Ferrule graphite 0 5 mm id 0 1 mm 0 2 mm 0 25 mm and 0 32 mm capillary columns 5080 8853 10 pk Column nut finger tight for 100 to 320 mm columns Connect column to inlet or detector 5020 8292 100 and 200 Ferrule Vespel graphite 0 37 mm id 0 1 mm and 0 2 mm capillary columns 5062 3516 10 pk Ferrule Vespel graphite 0 4 mm id 0 1 mm 0 2 mm and 0 25 mm capillary c...

Page 292: ...r Screw Ignitor cable assembly Single wavelength FPD cover Filter Spacer for sulfur filter PMT assembly Adapter ferrule Adapter nut 1 8 inch Packed column adapter Spring Dual wavelength FPD cover Column measuring tool PMT assembly right usually with sulfur filter installed Spring PMT assembly left usually with phosphorus filter installed ...

Page 293: ...for a 1 8 inch packed column Adapter nut Lint free gloves 2 Load the GC maintenance method and wait for the GC to become ready 3 Place a 1 8 inch nut and ferrule onto the packed column WARNING Be careful The oven and or detector may be hot enough to cause burns If the detector is hot wear gloves to protect your hands CAUTION Wear clean lint free gloves to prevent contamination of parts with dirt a...

Page 294: ...7 Carefully install the adapter assembly into the detector fitting Align the adapter so the it enters the detector fitting as vertically as possible Avoid stressing the adapter capillary tube The adapter nut should turn freely CAUTION Handle the adapter carefully and install the packed column before installing the adapter into the detector base The thin walled capillary tube that carries the sampl...

Page 295: ...the GC to become ready 3 Assemble a septum column nut and ferrule on the end of the column WARNING Be careful The oven and or detector may be hot enough to cause burns If the detector is hot wear gloves to protect your hands WARNING Wear safety glasses to protect your eyes from flying particles while handling cutting or installing glass or fused silica capillary columns Use care in handling these ...

Page 296: ...olumn 7 Snap off the column end The column may protrude about 1 mm beyond the end of the tool Inspect the end with a magnifying loupe to make certain that there are no burrs or jagged edges 8 Remove the column nut and swaged ferrule from the tool 9 Wipe the column walls with a tissue dampened with isopropanol to remove fingerprints and dust 10 Carefully thread the swaged column up into the detecto...

Page 297: ...mum performance and to avoid scratches use lint free gloves for assembling and inserting the filter into the assembly WARNING Be careful The detector may be hot enough to cause burns If the detector is hot wear heat resistant gloves to protect your hands CAUTION The photomultiplier tube PMT is extremely sensitive to light Always turn off the electrometer which turns off the high voltage to the PMT...

Page 298: ... Place a clean cloth under the filter housing to catch the filter For phosphorus filter use the sharpened wooden tip of a toothpick or cotton swab to dislodge the filter from the housing For sulfur filter shown below use the wooden tip of the cotton swab to remove the filter spacer Then dislodge the filter from the housing ...

Page 299: ... shown Avoid placing the wires very near heated areas such as the emission block or oven top 11 Restore the analytical method Sulfur filter Filter spacer CAUTION Do not use cleaning fluids Cleaning fluids will damage lens coatings CAUTION Filters are designed for the light of the flame to pass through in a specific direction The triangle on the edge of the phosphorus filter and the arrow on the ed...

Page 300: ... become ready 3 Open the FPD detector top cover 4 Loosen the screws securing the FPD cover to the top of the detector CAUTION When turning off the GC first turn off the flame to prevent condensation from dripping into the jet and column WARNING Be careful The detector may be hot enough to cause burns If the detector is hot wear heat resistant gloves to protect your hands ...

Page 301: ...Maintaining the FPD 15 Maintaining Your GC 301 5 For a single wavelength FPD remove the two screws at the bottom left of the cover 6 Lift the cover off the detector ...

Page 302: ... the GC to become ready 3 Remove the FPD cover See To Remove the FPD Cover on page 300 4 Loosen the collet screw holding the cable assembly to the ignitor Remove the collet and cable assembly 5 Use a nut driver to loosen and remove the glow plug If using a 5 16 inch wrench you may need to remove the exit tube assembly using a T 10 Torx driver WARNING Be careful The detector may be hot enough to ca...

Page 303: ...t and cable assembly and tighten the screw Align the collet set screw as shown Do not let the collet screw touch metal parts such as the emission block or PMT bracket dual wavelength detector 8 Replace the FPD cover See To Install the FPD Cover on page 304 9 Restore the analytical method 10 Wait 20 min for the detector to heat up then ignite the flame 11 Reset the EMF counter See To Reset an EMF C...

Page 304: ...rx screwdriver 2 Install the cover Single wavelength detector a Start the two screws on the right side of the cover b Start and tighten the screws at the base on the left side c Tighten the screws on the right side Dual wavelength detector Install the cover two screws 3 Close the FPD detector top cover ...

Page 305: ...r best results Rinse with a solvent appropriate to dissolve the expected contaminants Avoid abrasive or highly basic solutions see the caution above Recommended solvents dichloromethane acetone or methanol Mildly sonicate if needed but excessive sonication can damage the coating layer Gently remove solids using a soft nylon bristle brush Do not scrub hard Recommended brush Use the MMI inlet cleani...

Page 306: ...306 Maintaining Your GC 15 Maintaining the FPD ...

Page 307: ... Tube and Cover 322 This section describes how to maintain the Agilent G3435A G3436A Single or Dual Flame Photometric detector This detector is typically available only on a 7890A GC however this detector may be available on a 7890B GC which has been upgraded from a 7890A To determine the FPD version lift the detector top cover and locate the metal FPD cover see Exploded Parts View of the FPD on p...

Page 308: ...010 Exit tube assembly aluminum 19256 60700 Exit tube assembly stainless steel 19256 20705 Ferrule Vespel 1 4 inch id 10 pk 5080 8774 Ferrule 1 4 inch id front 10 pk 5180 4111 Ferrule 1 4 inch id back 10 pk 5180 4117 Ignitor replacement kit O ring Spacer Glow plug 19256 60800 Screw M3 66 mm T 10 0515 0680 Collar 19256 20690 Capillary adapter nut 19256 21150 Capillary adapter seat 19256 21140 1 4 i...

Page 309: ...and 0 25 mm capillary columns 5181 3323 10 pk Ferrule graphite 0 5 mm id 0 1 mm 0 2 mm 0 25 mm and 0 32 mm capillary columns 5080 8853 10 pk Column nut finger tight for 100 to 320 mm columns Connect column to inlet or detector 5020 8292 100 and 200 Ferrule Vespel graphite 0 37 mm id 0 1 mm and 0 2 mm capillary columns 5062 3516 10 pk Ferrule Vespel graphite 0 4 mm id 0 1 mm 0 2 mm and 0 25 mm capi...

Page 310: ...tube assembly Ignitor replacement kit O ring Kalrez Spacer Glow plug Capillary column nut Capillary adapter Collar Screw Ignitor cable assembly Dual FPD cover Single wavelength FPD cover Filter Spacer for sulfur filter PMT assembly Adapter ferrule Adapter nut Packed column adapter Vent tube ferrule ...

Page 311: ... become ready 3 Insert the capillary adapter into the 1 8 inch nut as shown then thread the nut onto the detector fitting WARNING Be careful The oven and or detector may be hot enough to cause burns If the detector is hot wear gloves to protect your hands WARNING Wear safety glasses to protect your eyes from flying particles while handling cutting or installing glass or fused silica capillary colu...

Page 312: ...312 Maintaining Your GC 16 Maintaining the G3435A G3436A FPD 4 Finger tighten the nut then tighten an additional 1 8 turn with a wrench FPD fitting Capillary adapter 1 8 inch nut ...

Page 313: ...umn nut and ferrule on the end of the column 4 Insert the end of the column through the column measuring tool so that the end protrudes beyond the tool WARNING Be careful The oven and or detector may be hot enough to cause burns If the detector is hot wear gloves to protect your hands WARNING Wear safety glasses to protect your eyes from flying particles while handling cutting or installing glass ...

Page 314: ... with a magnifying loupe to make certain that there are no burrs or jagged edges 8 Remove the column nut and swaged ferrule from the tool 9 Wipe the column walls with a tissue dampened with isopropanol to remove fingerprints and dust 10 Verify that a capillary adapter is installed in the detector fitting See To Install a Capillary Column Adapter in the FPD on page 311 11 Carefully thread the swage...

Page 315: ...sembling and inserting the filter into the assembly WARNING Be careful The detector may be hot enough to cause burns If the detector is hot wear heat resistant gloves to protect your hands CAUTION The photomultiplier tube PMT is extremely sensitive to light Always turn off the electrometer which turns off the high voltage to the PMT before removing the PMT housing or opening the emissions chamber ...

Page 316: ...sing 5 To prevent light from damaging the PMT cap the end or place it face down 6 Place a clean cloth under the filter housing to catch the filter For phosphorus filter use the sharpened wooden tip of a toothpick or cotton swab to dislodge the filter from the housing For sulfur filter shown below use the wooden tip of the cotton swab to remove the filter spacer Then dislodge the filter from the ho...

Page 317: ...mbly and secure with the spring 10 Restore the analytical method Sulfur filter Filter spacer CAUTION Do not use cleaning fluids Cleaning fluids will damage lens coatings CAUTION Filters are designed for the light of the flame to pass through in a specific direction The triangle on the edge of the phosphorus filter and the arrow on the edge of the sulfur filter should face away from the flame and t...

Page 318: ...vent tube assembly with a wrench 7 Remove the screws securing the FPD cover The single wavelength detector has two screws at the bottom of the left side top photo below and two screws at the top of the right side bottom photo below The dual wavelength detector has two screws at the top of the right side bottom photo below CAUTION When turning off the GC first turn off the flame to prevent condensa...

Page 319: ...Maintaining the G3435A G3436A FPD 16 Maintaining Your GC 319 8 Lift the cover off the detector ...

Page 320: ...GC maintenance method and wait for the GC to become ready 3 Remove the vent tube assembly and cover See To Remove the FPD Vent Tube on page 318 4 Loosen the collar screw some have two screws holding the cable assembly to the ignitor Remove the collar and cable assembly 5 Use a wrench to loosen and remove the glow plug WARNING Be careful The detector may be hot enough to cause burns If the detector...

Page 321: ...h Do not overtighten 9 Replace the ignitor collar and cable assembly and tighten the screw 10 Replace the cover and the vent tube assembly See To Install the FPD Vent Tube and Cover on page 322 11 Restore the analytical method 12 Wait 20 minutes for the detector to heat up then ignite the flame 13 Reset the EMF counter See To Reset an EMF Counter in the Operation Manual Glow plug Spacer O ring ...

Page 322: ...er Single wavelength detector a Start the two screws on the right side of the cover b Start and tighten the screws at the base on the left side c Tighten the screws on the right side Dual wavelength detector Install the cover two screws 3 Install the vent tube assembly 4 Reconnect the flexible tubing to the vent tube assembly and route the open end to waste 5 Close the FPD cover ...

Page 323: ...323 Agilent 7890 Series Gas Chromatograph Maintaining Your GC Agilent Technologies 17 Maintaining the Aux EPC Consumables and Parts for the Aux EPC 324 Installing or Replacing Frits in the Aux EPC 326 ...

Page 324: ...package of 6 5181 3344 Blue dot frit high flow resistance G3430 80063 Red dot frit medium flow resistance G3430 80062 Brown dot frit low flow resistance G3430 80061 No frit brass tube zero flow resistance G3430 20011 Table 50 Auxiliary channel frits Frit marking Flow resistance Flow characteristic Often used with Three rings Blue High 3 33 0 3 SCCM 15 PSIG NPD Hydrogen Two rings Red Medium 30 1 5 ...

Page 325: ... Your GC 325 None brass tube Zero No restriction Headspace vial pressurization purged splitter and Deans Switch when using backflush Table 50 Auxiliary channel frits continued Frit marking Flow resistance Flow characteristic Often used with ...

Page 326: ...ion on selecting auxiliary channel frits refer to the 7890 Series Advanced User Guide and Consumables and Parts for the Aux EPC 4 Loosen the captured screw for the channel that you want to change 5 Lift up the pneumatic tubing block Remove the frit and O ring using the tweezers Be careful to avoid scratching the metal surfaces 6 Place a new O ring on the new frit and press it down into the block 7...

Page 327: ...he PIDs used with your Aux EPC For more information refer to the 7890 Series Advanced User Guide 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 ...

Page 328: ...328 Maintaining Your GC 17 Maintaining the Aux EPC ...

Page 329: ...t 7890 Series Gas Chromatograph Maintaining Your GC Agilent Technologies 18 Maintaining the PCM Consumables and Parts for the PCM 330 Calibrating the PCM Interface 331 Installing or Replacing Frits in the PCM 332 ...

Page 330: ...log for consumables and supplies for a more complete listing or visit the Agilent Web site for the latest information www agilent com chem supplies Table 51 PCM consumables Description Part number O rings package of 12 5180 4181 Proportional valve Carrier G3430 67013 Proportional valve AUX G3430 67016 ...

Page 331: ...the PCM inlet fitting 2 Turn on the GC and wait 15 minutes to allow it to reach thermal equilibrium 3 When the GC has reached thermal equilibrium press Options scroll to Calibration and press Enter 4 Scroll to the module to be zeroed and press Enter 5 Scroll to a zero line and press Info The GC will remind you of the conditions necessary for zeroing that specific sensor Flow sensors Verify that th...

Page 332: ... the gas supply to the channel 3 Select the appropriate frit For information on selecting PCM channel frits refer to the 7890 Series Advanced User Guide 4 Remove the screw holding the tubing block with the output tubing 5 Remove the tubing block Remove the frit and O ring using the tweezers Be careful to avoid scratching the metal surfaces 6 Remove the other O ring as well Replace it with a new O ...

Page 333: ...estore the gas supply After installing or replacing a frit be sure to update the PIDs used with your PCM For more information refer to the 7890 Series Advanced User Guide 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 ...

Page 334: ...334 Maintaining Your GC 18 Maintaining the PCM ...

Page 335: ...intaining a Valve Consumables and Parts for Valves 336 Exploded Parts View of GC Rotary Valves 337 To Replace a Gas Sampling Valve Loop 338 To Align a Rotary Valve Rotor 340 To Replace a Rotary Valve in the Valve Box 341 To Remove the Upper Valve Box 344 To Install the Upper Valve Box 346 ...

Page 336: ...00 psi 225 C maximum temperature 5062 9510 10 port Nitronic 60 300 psi 350 C maximum temperature 0101 0585 10 port Hastelloy 400 psi 225 C maximum temperature 5062 9511 Valves liquid sampling 0 2 µL 1000 psi stainless steel 175 C maximum temperature 0101 0636 0 5 µL 5000 psi 175 C maximum temperature 0101 0639 0 5 µL 1000 psi stainless steel 175 C maximum temperature 0101 0637 1 0 µL 1000 psi stai...

Page 337: ...Maintaining a Valve 19 Maintaining Your GC 337 Exploded Parts View of GC Rotary Valves Valve actuator Valve body Upper valve box assembly Rotor index pin Valve rotor Preload assembly ...

Page 338: ...ny loose particulate insulation 9 When the valve is cool loosen the sample loop s two 1 4 inch fittings on the valve head and remove the loop WARNING The oven inlet detector and valve box may be very hot Sample and or harmful gases may be present Refer to your company s standard operating procedures for purging the chemicals from the sample line WARNING The valve box insulation is made of refracto...

Page 339: ... 19 Maintaining Your GC 339 10 Install the new sample loop 11 Repressurize the sample loop and check for leaks 12 Install the upper valve box See To Install the Upper Valve Box on page 346 13 Restore the analytical method ...

Page 340: ...he rotor adjustment shaft on top of the actuator Using a flathead screwdriver rotate the valve rotor counterclockwise until it stops then back it off a small amount to set one end of the rotor s motion 1 mm 6 Tighten the adjustment set screw 7 Turn the valve On turn Off to check for smooth operation 8 Restore the analytical method WARNING The oven inlet detector and valve box may be very hot If th...

Page 341: ...alve actuator air 5 Turn off the carrier gas and sample line flows and relieve any back pressure to the valve WARNING Do not install a liquid sampling valve LSV in the valve box if you plan to heat the box above 75 C Heating an LSV over 75 C can cause a leak and subsequent explosion LSVs should be mounted in the side location to avoid potential explosions WARNING The oven inlet detector and valve ...

Page 342: ...rt valve points toward the back of the GC if installed correctly This is the On position Install and tighten the two screws with a screwdriver 11 Use needle nosed pliers to move the valve rotor index pin of the valve counterclockwise until the pin touches the valve stop Off position WARNING The valve box insulation is made of refractory ceramic fibers RCFs To avoid inhaling RCF particles we recomm...

Page 343: ... check both the On and Off positions When leak free set the valve to Off see step 11 14 Install the upper valve box assembly See To Install the Upper Valve Box on page 346 15 Restore the analytical method 16 Reset the valve EMF counters See To Reset an EMF Counter in the Operation Manual Valve rotor index pin Valve stop Off position WARNING Hazardous sample gases may be present 1 Sample in 5 Carri...

Page 344: ...valve box to a safe handling temperature 25 C or load the GC maintenance method 3 Lift and remove the detector cover 4 Remove the mounting screws from the upper valve box 5 Lift up and set aside WARNING The oven inlet detector and valve box may be very hot If they are hot wear heat resistant gloves to protect your hands ...

Page 345: ...id inhaling RCF particles we recommend these safety procedures 1 Ventilate your work area 2 Wear long sleeves gloves safety glasses and a disposable dust mist respirator 3 Dispose of insulation in a sealed plastic bag 4 Vacuum any residual particles and discard 5 Wash your hands with mild soap and cold water after handling RCFs ...

Page 346: ...valve rotor counterclockwise until it stops 4 Locate the two half moon cutouts at the bottom back of the upper valve box Place the upper valve box on top of the lower valve assembly routing the heater sensor wires through the cutouts Secure with two T 20 mounting screws 5 Push each coupling shaft assembly downward with a flathead screwdriver until the slot on the coupling engages the rotor index p...

Page 347: ...valve a Using a flathead screwdriver turn the rotor adjustment shaft counterclockwise until it stops then back it off a small amount 1 mm to set one end of the rotor s motion b Tighten the adjustment set screw 7 Install the detector cover 8 Restore normal operating condition ...

Page 348: ...348 Maintaining Your GC 19 Maintaining a Valve ...

Page 349: ...ing Your GC Agilent Technologies A Swagelok Connections Making Swagelok Connections 350 Using a Swagelok Tee 354 The gas supply tubing is attached with Swagelok fittings If you are not familiar with Swagelok connections review the following procedures ...

Page 350: ... in Figure 9 Figure 9 Swagelok nuts and ferrules 2 Clamp a stainless steel plug or similar fitting in a bench vise 3 Push the tubing into the stainless steel plug Figure 10 4 Make sure that the front ferrule is touching the plug Slide the Swagelok nut over the ferrule and thread it onto the plug Front ferrule Back ferrule Nut Tubing IMPORTANT The narrow end of the back ferrule fits into the rear o...

Page 351: ... into the plug then withdraw it approximately 1 to 2 mm Figure 11 Figure 11 Insert the tubing 6 Finger tighten the nut 7 Mark the nut with a pencil line Figure 12 Plug or fitting Nut and ferrules Tubing held in a vise Front ferrule Back ferrule Nut Insert tubing fully Withdraw tubing 1 2 mm Tighten nut ...

Page 352: ...rn Figure 13 Figure 13 Final tightening 9 Remove the plug from the fitting To connect the tubing with nut and ferrules to another fitting finger tighten the nut then use a wrench to tighten it 3 4 1 8 inch fittings or 1 1 4 1 4 inch fittings of a turn 10 Both correctly and incorrectly swaged connections are shown in Figure 14 Note that the end of the tubing in a correctly swaged fitting is not cru...

Page 353: ...Swagelok Connections 20 Maintaining Your GC 353 Figure 14 Completed fitting ...

Page 354: ... 16 inch wrenches 1 8 inch Swagelok cap optional 1 Cut the tubing where you want to install the Tee Connect the tubing and Tee with a Swagelok fitting See Figure 15 Figure 15 Swagelok tee 2 Measure the distance from the Tee to the GC inlets Attach copper tubing to the open Tee ends with Swagelok fittings NOTE Do not combine valve actuator air with flame ionization air The valve action will cause m...

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