Agilent Technologies 6890A Manuals

Manuals and User Guides for Agilent Technologies 6890A. We have 1 Agilent Technologies 6890A manual available for free PDF download: Service Manual

Agilent Technologies 6890A Service Manual (867 pages)

Gas Chromatograph

Brand: Agilent Technologies | Category: Laboratory Equipment | Size: 19.53 MB

Table of Contents
4
Before Servicing the Instrument

28
- Safety
  
  30
  - Cautions
    30
    
    Columns
    30
    
    Printed Circuit Boards
    30
    
    TCD Detector
    30
    
    Voltage Carrying Components
    30
  - Warnings
    31
    
    Heated Components
    31
    
    Voltage Carrying Components
    31
    
    Gases
    32
    
    Insulation
    32
- Tools Required Tools Required
  
  35
  - Specialized
    35
- Calibration Notes Calibrating the 6890 GC
  
  37
  - Factory Calibrations
    37
Inlets

38
- Split/Splitless Inlet
  
  40
- Theory of Operation
  40
- EPC Inlet
  41
  - Split Mode Operation
    41
  - Pulsed Split Mode
    41
  - Splitless Mode
    42
  - Pulsed Splitless Mode
    43
  - Gas Saver Mode
    43
- Manually Controlled Inlet
  44
  - Split Mode
    44
  - Splitless Mode
    45
- Replacement Procedures
  47
- Leak Testing-EPC and Manual Inlets
  58
- Leak Testing the EPC Module Only
  65
  - Forward Pressure Valve Leaks
    66
  - Locating Leaks on the Flow Manifold
    66
  - Correcting Leaks
    68
  - Potential Leak Points
    69
Purged/Packed Inlet Theory of Operation

71
- Manually Controlled Inlet
  72
- Replacement Procedures
  73
- Cool On-Column Inlet Theory of Operation
  
  91
  - EPC Inlet
    91
  - Manually Controlled Inlet
    92
  - Replacement Procedures
    93
    
    Replacing the Inlet
    93
    
    Replacing the Heater/Sensor Assembly
    96
    
    Replacing the Inlet EPC Flow Manifold
    97
    
    Replacing the Supply Fitting on a Type 1 EPC Flow Manifold
    98
  - Leak Testing EPC and Manual Inlets
    99
    
    Preparation
    99
    
    Performing the Leak Test-EPC Inlets
    101
    
    Performing the Leak Test-Manual Inlets
    103
    
    Forward Pressure Valve Leaks
    104
    
    Leak Testing the EPC Module Only
    104
    
    Locating Leaks
    105
    
    Correcting Leaks
    107
    
    Potential Leak Points
    108
- Programmed Temperature Vaporization Inlet (PTV) Theory of Operation
  
  111
  - Sampling Heads
    111
  - Split Modes
    112
    
    Septum Head Installed
    112
    
    Septumless Head Installed
    113
    
    Pulsed Split Modes
    114
  - Splitless Modes
    115
    
    Pulsed Splitless Mode
    117
  - Solvent Vent Mode
    118
    
    Stage 1: Sample and Vent
    118
    
    Stage 2: Sample Transfer
    120
    
    Stage 3: Purge and Cleanup
    121
  - Replacement Procedures
    122
    
    Replacing the PTV Inlet, Pneumatics, and Manifold
    122
    
    Replacing the PTV with Cooling Assembly
    125
    
    Replacing the CO 2 or LN 2 Inlet Cryo Assembly
    127
    
    Replacing the PTV Manifold Assembly
    128
    
    Removing both the Manifold and Plumbing Assemblies
    131
    
    Replacing the Plumbing Assemblies
    132
    
    Replacing a Gang Fitting Restrictor or O-Ring
    134
    
    Replacing the PTV Thermocouple PCB
    134
    
    Replacing the Filter
    135
    
    Replacing the Inlet Adapter
    136
    
    Installing the Column
    137
    
    Removing the Septumless Head
    138
    
    Cleaning the Septumless Head
    139
    
    Replacing the Teflon Ferrule
    141
    
    Removing/Replacing the Septum Head
    142
    
    Replacing the Liner
    144
    
    Replacing the Septum
    144
  - Diagnostics
    147
    
    Shutdown Behavior
    147
  - Leak Testing
    148
    
    Preparation
    148
    
    Performing the Leak Test
    149
    
    Leak Testing the PTV Module Only
    151
    
    Forward Pressure Valve Leaks
    152
    
    Locating Leaks on the Flow Manifold
    152
    
    Correcting Leaks
    154
    
    Potential Leak Points
    154
- Volatiles Interface Theory of Operation
  
  157
  - Splitless Mode
    157
  - Direct Mode
    159
  - Gas Saver
    162
  - Replacement Procedures
    163
    
    Replacing or Cleaning the Interface
    163
    
    Replacing the Heater/Sensor Assembly
    166
    
    Replacing the EPC Manifold
    169
    
    Calibrating Your Interface
    173
    
    Replacing the Filter
    174
    
    Replacing or Cleaning Restrictors
    175
    
    Replacing the Gang Fitting
    176
  - Leak Testing the Volatiles Interface
    177
    
    Leak Checking
    177
    
    Preparing the Interface for a Leak Test
    180
  - Leak Testing the EPC Module Only
    181
    
    Forward Pressure Valve Leaks
    182
    
    Locating Leaks on the Flow Manifold
    182
    
    Correcting Leaks
    184
    
    Potential Leak Areas
    185
- Solvent Vapor Exit Accessory
  
  186
  - Theory of Operation
    186
  - Replacement Procedures
    187
    
    Replacing the Valve/Fitting Assembly
    187
    
    Replacing the Bleed Restrictor Column
    189
    
    Replacing the Tri-Column Assembly
    190
    
    Replacing the Pre-Column Assembly
    191
  - Leak Testing
    192
    
    Leak Testing the Tri-Column Assembly
    192
    
    Potential Leak Points
    192
    
    Leak Testing the SVE Assembly
    194
- Pneumatics Control Module
  
  196
  - Theory of Operation
    196
  - Replacement Procedures
    197
    
    Replacing the PCM
    197
    
    Replacing the PCM Gang Weldment
    199
    
    Calibrating the PCM Interface
    200
  - Leak Testing the PCM
    202
    
    Forward Pressure Valve Leaks
    203
    
    Locating Leaks on the Flow Manifold
    203
    
    Correcting Leaks
    205
    
    Potential Leak Areas
    205
Detectors

206
- Flame Ionization Detector (FID) Theory of Operation
  
  209
  - Manually Controlled Detector
    209
  - Replacement Procedures
    211
    
    Replacing the Entire Detector
    211
    
    Replacing the Detector Weldment
    215
    
    Replacing the Collector Assembly
    216
    
    Replacing the FID Jet
    218
    
    Removing the Electrometer
    220
    
    Removing a Flow Manifold
    221
    
    Installing a Manifold
    223
    
    Removing the FID Interface Board
    227
  - Diagnostics
    229
    
    FID Ignition Problems
    229
  - Cleaning an FID Jet and Collector
    230
    
    Cleaning the Collector
    230
    
    Cleaning the Jet
    230
- Nitrogen Phosphorus Detector (NPD) Theory of Operation
  
  233
  - EPC Detector
    233
  - Manually Controlled Detector
    234
  - Recommended Settings
    235
    
    Bead Voltage
    235
    
    Equilibration Time
    235
    
    Extending the Life of the Bead
    235
    
    Turning Hydrogen off between Runs
    235
    
    Turning Hydrogen off During a Solvent Peak
    235
    
    Jets and Collectors
    236
    
    Temperature Programming
    236
  - Correcting NPD Hardware Problems
    238
  - Replacement Procedures
    241
    
    Replacing the Entire Detector
    241
    
    Software
    241
    
    Replacing the Active Element (Bead)
    244
    
    Removing the Collector Assembly
    247
    
    Replacing the Jet
    249
    
    Removing the Electrometer
    250
    
    Removing an EPC Flow Manifold
    251
    
    Installing a Type 2 Manifold
    253
    
    Replacing the Detector Interface Board
    259
  - Cleaning the NPD Jet and Collector
    261
    
    Cleaning the Collector
    261
    
    Cleaning the Jet
    262
Thermal Conductivity Detector (TCD) Theory of Operation

265
- Delta PRT
  266
- Error Messages
  267
- EPC Detector
  268
- Manually Controlled Detector
  268
- Replacement Procedures
  270
  - Replacing the Entire Detector
    270
  - Replacing the Detector Cell
    273
  - Removing an EPC Flow Manifold
    276
  - Installing a Type 2 Manifold
    278
  - Replacing the Detector Interface Card
    284
- Cleaning the Thermal Conductivity Detector
  286
Electron Capture Detector (ECD) Theory of Operation

289
- EPC Detector
  289
- Manually Controlled Detector
  289
- Replacement Procedures
  291
- Diagnostics
  304
  - Frequency Test
    304
  - Leak Test
    305
- Troubleshooting Contamination Problems
  307
  - Ensure Clean Gas Supplies
    307
  - Isolate Problem to Carrier or Makeup Gas Supplies
    307
  - Evaluate the Makeup Side
    308
  - Evaluate the Carrier Side
    309
- Maintaining an ECD Detector
  310
  - ECD Bakeout
    310
  - Performing a Radioactivity Leak Test (Wipe Test)
    311
- Micro-Cell Electron Capture Detector (Μ-ECD) Theory of Operation
  
  313
  - EPC Detector
    313
  - Replacement Procedures
    314
    
    Replacing the Entire Detector/Detector Cell
    314
    
    Replacing the Heater/Sensor Assembly
    317
    
    Replacing the Makeup Gas Adapter
    320
    
    Removing an EPC Flow Manifold
    322
    
    Installing a Type 2 Manifold
    324
    
    Removing the Signal Board
    329
    
    Replacing the Detector Interface Card
    331
  - Diagnostics
    333
    
    Frequency Test
    333
    
    Leak Test
    334
  - Maintaining a Μ-ECD Detector
    336
    
    Μ-ECD Bakeout (Thermal Cleaning)
    336
    
    Performing a Radioactivity Leak Test (Wipe Test)
    337
- Flame Photometric Detector (FPD) Theory of Operation
  
  339
  - Single Wavelength FPD
    339
  - Dual Wavelength FPD
    340
  - Operating Conditions
    340
  - Replacement Procedures
    341
    
    Replacing the Entire Detector
    341
    
    Column Installation
    343
    
    Cleaning/Replacing Windows, Filters, and Seals
    345
    
    Cleaning/Replacing the Jet
    349
    
    Replacing the Transfer Line Fused Silica Liner
    352
    
    Replacing the Photomultiplier Tube
    355
    
    Replacing the Heater/Sensor Assemblies
    357
    
    Replacing the Ignitor Glow Plug
    359
    
    Removing an FPD Flow Manifold
    361
    
    Installing a Type 2 Manifold
    362
  - Diagnostics
    369
    
    Detector Temperature Considerations
    369
    
    PMT Saturation
    369
    
    Quenching Effects
    369
    
    Flame Ignition Problems
    370
  - Leak Testing
    372
    
    Potential Leaks Areas
    372
- Auxiliary EPC Theory of Operation
  
  375
  - Replacement Procedures
    377
    
    Removing the Auxiliary Manifold (Type 1 or Type 2)
    377
    
    Installing a Type 2 Manifold
    379
    
    Changing an Auxiliary Channel Frit
    387
Mainframe

390
- Covers and Fans
  
  392
  - Plastic Covers
    392
  - Metal Covers
    393
  - Removing the Electronics Cover
    394
  - Removing the Detector Cover
    395
  - Replacing the Detector Top Cover
    397
  - Removing the Pneumatics Top Cover
    399
  - Removing the Pneumatics RFI Shielding
    399
  - Removing the Left Side Cover
    400
  - Removing the Right Side Cover
    401
  - Removing the als Tray Bracket
    402
  - Removing the Inlet Carrier Cover
    403
  - Removing the Inlet Carrier
    404
  - Removing the Rear Covers
    405
    
    Removing the Top Rear Cover
    405
    
    Removing the Bottom Rear Cover
    406
  - Removing the Injection Port Fan Cover
    407
  - Removing the Injection Port Fan
    407
  - Removing the Keyboard
    408
  - Removing the Pneumatics Area Fan
    409
    
    Chassis Mounted Fan
    409
    
    Bracket Mounted Fan
    410
- Oven and Temperature Control Heated Zones
  
  413
  - Configuring the GC for an MSD
    413
  - Oven Temperature Troubleshooting
    414
  - Testing Resistance of the Heater Coil
    415
  - Cryo Valve Installation/Replacement
    416
    
    Installing a New Cryo Valve
    416
    
    Replacing an Existing Cryo Valve
    418
  - Replacing the Oven Shroud Assembly
    421
  - Replacing the Oven Sensor
    424
  - Replacing the Oven Fan
    425
  - Replacing the Oven Fan Motor
    426
  - Replacing the Oven Flap Motor
    428
  - Converting the Oven Type
    430
    
    Configuring the Oven
    430
- Power/Electronics Replacement Replacing the Main Board
  
  435
  - Installing an MIO Card (6890A and 6890 Plus)
    438
  - Replacing Roms on the Main Board (6890A and 6890 Plus)
    442
    
    Removing a ROM
    442
    
    Inserting a ROM
    443
  - Replacing the Battery
    444
  - Replacing the Pneumatics Board
    445
    
    Replacing the PCB Bracket
    446
  - Replacing the Transformer-GC Serial Number < 10225
    448
  - Replacing the als Interface Board
    454
Site Preparation

458
- Environmental
  
  460
  - Temperature and Humidity Ranges
    460
  - Ventilation Requirements
    460
    
    Venting Oven Exhaust
    460
    
    Venting Toxic or Noxious Gases
    461
  - Benchtop Space Requirements
    461
- Gases Gas Requirements
  
  467
  - Gases for Capillary Columns
    467
  - Gas Purity
    469
  - The Gas Plumbing
    470
    
    Supply Tubing for Carrier and Detector Gases
    471
    
    Pressure Regulator-Gas Supply Tubing Connections
    472
    
    Two-Stage Pressure Regulators
    472
    
    Traps
    473
  - Cryogenic Cooling Requirements
    474
    
    Choosing a Coolant
    474
    
    Using Carbon Dioxide
    475
    
    Using Liquid Nitrogen
    477
  - Supplying Valve Actuator Air
    478
- Power
  
  480
  - Grounding
    480
    
    Line Voltage
    481
    
    USA Fast Heating Oven
    481
    
    Canadian Installation
    482
- Instrument Specifications
  
  486
  - Physical Specifications
    486
    
    Data Communications
    486
    
    Dimensions and Average Weight
    486
    
    Heated Zones
    486
    
    Laboratory Environmental Conditions
    486
    
    Safety Certifications
    486
  - Column Oven
    487
  - Inlets
    488
  - Detectors
    489
    
    Fid
    489
    
    Npd
    489
    
    Aed
    490
    
    Ecd
    490
    
    Fpd
    490
    
    Msd
    490
    
    Tcd
    490
    
    Μ-ECD
    490
Performance Verification

492
Checkout Chromatograms FID Checkout Conditions and Chromatogram

495
- Typical Values
  498
- NPD Checkout Conditions and Chromatogram
  499
  - Typical Values
    502
- TCD Checkout Conditions and Chromatogram
  503
  - Typical Values
    506
- ECD Checkout Conditions and Chromatogram
  507
  - Typical Values
    510
- Microcell ECD Checkout Conditions and Chromatogram
  511
  - Typical Values
    514
- FPD Checkout Conditions and Chromatogram
  515
  - Typical Values
    518

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Agilent Technologies 6890A Manuals

Agilent Technologies 6890A Service Manual (867 pages)

Table of Contents

Before Servicing the Instrument

Safety

Tools Required Tools Required

Calibration Notes Calibrating the 6890 GC

Inlets

Split/Splitless Inlet

Purged/Packed Inlet Theory of Operation

Cool On-Column Inlet Theory of Operation

Programmed Temperature Vaporization Inlet (PTV) Theory of Operation

Volatiles Interface Theory of Operation

Solvent Vapor Exit Accessory

Pneumatics Control Module

Detectors

Flame Ionization Detector (FID) Theory of Operation

Nitrogen Phosphorus Detector (NPD) Theory of Operation

Thermal Conductivity Detector (TCD) Theory of Operation

Electron Capture Detector (ECD) Theory of Operation

Micro-Cell Electron Capture Detector (Μ-ECD) Theory of Operation

Flame Photometric Detector (FPD) Theory of Operation

Auxiliary EPC Theory of Operation

Mainframe

Covers and Fans

Oven and Temperature Control Heated Zones

Power/Electronics Replacement Replacing the Main Board

Site Preparation

Environmental

Gases Gas Requirements

Power

Instrument Specifications

Performance Verification

Checkout Chromatograms FID Checkout Conditions and Chromatogram

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