Name: Agilent Technologies Agilent 7890 Series
Brand: Agilent Technologies
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Maintaining the uECD 13

Maintaining Your GC 255

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.

Table of Contents3
About Maintaining the GC10
Overview of Maintenance10
Tools and Materials Required for Maintenance11
Maintenance Methods for the 7890 Series GC13
Safety Information15
Finding a Replacement Part Number16
Removing Covers17
To Remove the Detector Top Cover18
To Remove the Pneumatics Cover19
To Remove the Electronics Cover20
Maintaining the GC22
Consumables and Parts for General GC Maintenance22
Parts Identification24
To Change the Hydrogen Sensor Calibration Gas Cylinder25
Using the Removable Oven Door27
Maintaining Capillary Columns30
Consumables and Parts for Columns30
To Install a Capillary Column Hanger32
To Install Capillary Column Clips33
To Condition a Capillary Column34
To Cut a Loop from a Column37
To Reverse a Column and Bakeout Contaminants38
To Attach a Capillary Column Using Siltite Metal Fittings40
To Disconnect Fused Silica Tubing from a Siltite Fitting42
Maintaining the Split/Splitless Inlet44
Consumables and Parts for the Split/Splitless Inlet44
Exploded Parts View of the Split/Splitless Inlet47
To Install a Capillary Column with the Split/Splitless Inlet48
To Change the Septum on the Split/Splitless Inlet52
To Clean the Septum Seat in the Insert Assembly of the Split/Splitless Inlet54
To Change the Liner and O-Ring on the Split/Splitless Inlet56
To Replace the Gold Seal on the Split/Splitless Inlet59
To Replace the Filter in the Split Vent Line for the Split/Splitless Inlet61
To Clean the Split/Splitless Inlet64
To Bakeout Contaminants from the Split/Splitless Inlet66
Maintaining the Purged Packed Inlet67
Consumables and Parts for the Purged Packed Inlet68
Exploded Parts View of the Purged Packed Inlet71
To Install a Capillary Column with the Purged Packed Inlet72
To Change the Septum on the Purged Packed Inlet77
To Clean the Septum Seat in the Purged Packed Inlet79
To Install an Adapter on the Purged Packed Inlet81
To Change the O-Ring on the Purged Packed Inlet83
To Change the Glass Liner on the Purged Packed Inlet84
To Install an Insulation Cup on the Purged Packed Inlet86
To Clean the Purged Packed Inlet87
To Bakeout Contaminants from the Purged Packed Inlet89
To Install a Packed Metal Column90
To Install a Packed Column Adapter on a Detector Fitting92
To Install a Packed Glass Column94
To Condition a Packed Column97
To Install Ferrules on a Packed Metal Column99
Maintaining the COC Inlet102
Consumables and Parts for the COC Inlet102
Exploded Parts View of the COC Inlet106
To Install a Capillary Column with the COC Inlet107
To Check the Needle-To-Column Size on the COC Inlet110
To Change a Septum on the COC Inlet112
To Install an Insert on the COC Inlet114
To Clean the COC Inlet116
To Replace the 7693A Injector Needle Support Guide118
To Replace the Needle Support Assembly in a 7683B Injector119
To Replace a Needle in a Syringe122
To Replace the Fused Silica Needle in a Syringe for the COC Inlet123
To Bakeout Contaminants from the COC Inlet125
Maintaining the MMI128
Consumables and Parts for the MMI128
Exploded Parts View of the MMI131
To Install the Column Nut Adapter132
To Install a Capillary Column with the MMI133
To Change the Septum on the MMI137
To Clean the Septum Seat in the Insert Assembly of the MMI139
To Change the Liner and O-Ring on the MMI141
To Replace the Filter in the Split Vent Line for the MMI144
To Clean the Multimode Inlet147
To Bakeout Contaminants from the MMI149
Maintaining the PTV Inlet152
Consumables and Parts for the PTV Inlet152
Exploded Parts View of the PTV Inlet154
To Install a Capillary Column with the PTV Inlet155
To Clean the Septumless Head on the PTV Inlet158
To Replace the Septumless Head PTFE Ferrule on the PTV Inlet161
To Change the Septum on the PTV Inlet163
To Clean the Septum Seat in the Septum Head Assembly of the PTV Inlet165
To Change the Liner on the PTV Inlet167
To Replace the Inlet Adapter for the PTV Inlet170
To Replace the Filter in the Split Vent Line for the PTV Inlet172
To Bakeout Contaminants from the PTV Inlet175
Maintaining the VI178
Consumables and Parts for the VI178
Exploded Parts View of the VI180
To Install a Capillary Column with the VI181
To Remove the VI Interface185
To Clean the VI187
To Install the VI Interface189
To Replace the Filter in the Split Vent Line for the VI190
To Bakeout Contaminants from the VI Inlet193
Maintaining the FID195
Consumables and Parts for the FID196
Exploded Parts Views of the FID199
Selecting an FID Jet201
To Attach a Capillary Column Adapter on an Adaptable FID203
To Install a Capillary Column in the FID205
To Replace the FID Collector Assembly209
To Replace an FID Jet212
To Perform Maintenance on the FID Collector Assembly216
To Check the FID Leakage Current224
To Check the FID Baseline225
To Install the FID Insulation Cup Assembly (Adaptable FID Only)226
To Install the Optional FID PTFE Chimney Insert228
To Bakeout the FID229
Maintaining the TCD232
Consumables and Parts for the TCD232
To Install a Capillary Column in the TCD234
To Install the Optional TCD Capillary Column Adapter236
To Install a Capillary Column with the Optional TCD Capillary Column Adapter237
To Bakeout Contaminants from the TCD240
Maintaining the Uecd242
Important Safety Information about the Uecd242
Consumables and Parts for the Uecd244
Exploded Parts View of the Uecd246
To Replace the Uecd Fused Silica Indented Mixing Liner and Install the Makeup Gas Adapter247
To Install a Capillary Column in the Uecd251
To Install the Insulating Cup for the Uecd254
To Bakeout the Uecd256
Maintaining the NPD260
Consumables and Parts for the NPD260
Exploded Parts View of the NPD263
Selecting an NPD Jet264
To Attach a Capillary Column Adapter on an Adaptable NPD266
To Install a Capillary Column in the NPD268
To Replace the NPD Bead Assembly272
To Maintain the NPD Collector, Ceramic Insulators, and Jet279
To Check the NPD Leakage Current285
To Bakeout the NPD286
Consumables and Parts for the FPD290
Exploded Parts View of the FPD292
To Install a Packed Column Adapter in the FPD293
To Attach a Capillary Column to the FPD295
To Change the FPD + Wavelength Filter297
To Remove the FPD + Cover300
To Replace the FPD + Ignitor302
To Install the FPD + Cover304
Cleaning the FPD + Brazement305
Maintaining the G3435A/G3436A FPD308
Consumables and Parts for the FPD308
Exploded Parts View of the FPD310
To Install a Capillary Column Adapter in the FPD311
To Attach a Capillary Column to the FPD313
To Change the FPD Wavelength Filter315
To Remove the FPD Vent Tube318
To Replace the FPD Ignitor320
To Install the FPD Vent Tube and Cover322
Maintaining the Aux EPC323
Consumables and Parts for the Aux EPC324
Installing or Replacing Frits in the Aux EPC326
Maintaining the PCM330
Consumables and Parts for the PCM330
Calibrating the PCM Interface331
Installing or Replacing Frits in the PCM332
Maintaining a Valve336
Consumables and Parts for Valves336
Exploded Parts View of GC Rotary Valves337
To Replace a Gas Sampling Valve Loop338
To Align a Rotary Valve Rotor340
To Replace a Rotary Valve in the Valve Box341
To Remove the Upper Valve Box344
To Install the Upper Valve Box346
Swagelok Connections349
Making Swagelok Connections350
Using a Swagelok Tee354

Brand	Agilent Technologies
Model	Agilent 7890 Series
Category	Measuring Instruments
Language	English

Agilent Technologies Agilent 7890 Series User Manual

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