Waters GCT Premier - Page 218

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10-14 Routine Maintenance

5. Remove the wing nut, washer and end casing from the basket.

6. Remove the washer and short compression spring from the inside of the

basket.

Wing nut End casing

Table of Contents

Default Chapter3
- Safety Information3
- Consignes de Sécurité6
- GCT Premier Mass Spectrometer Information8
1 Instrument Description24
- Introduction24
- Ion Source25
- Inlets28
- Reference Reservoir Inlet29
- Vacuum System29
- Masslynx Control System30
- Controls and Indicators on the Instruments' Front Panel31
  - Status Display31
- Controls on the Instruments' Top Panel33
- Controls and Connectors on Instruments' Rear Panel34
2 Preparing the Instrument for EI/CI Operation44
- Changing the EI/CI Inner Source Assembly44
  - Removing the EI/CI Inner Source45
  - Installing the EI/CI Inner Source46
- Changing the EI/CI Outer Source Assembly48
  - Removing the EI/CI Outer Source from the Instrument48
  - Fitting the EI/CI Outer Source to the Instrument50
3 Tuning the Instrument53
- Preparing the Instrument for Operation54
- Obtaining an Ion Beam55
  - Introducing the Reference Sample58
- Setting up the Instrument Automatically60
  - Required Material60
- Tuning the Instrument for EI71
  - General Tips for Tuning75
- Tuning the Instrument for Best Resolution in EI76
- Tuning the Instrument for Positive CI77
- Tuning the Instrument for Negative CI82
- Preparing for FI Operation85
- Managing Tune Parameters86
4 Acquiring Data89
- Starting Data Acquisition90
  - Starting a Single Sample Acquisition90
  - Starting a Multiple-Sample Data Acquisition93
- Setting up an MS Method93
- Setting up an MS Scan100
  - Types of Data Acquisition102
- Setting up DRE Mode103
5 Calibration107
- Calibrating the Instrument108
  - Setting up the Instrument for Calibration108
  - Lock Mass Correction109
- Using the Calibration Wizard110
  - Accepting a Calibration115
  - Manually Correcting a Calibration117
- Using Calibrations for Subsequent Acquisitions121
- Dynamic External Calibration Temperature Compensation122
  - Setting the DXC Drift Value122
- Calibrating the Instrument in CI124
  - Calibrating the Instrument in CI+ Mode124
- Manual Calibration125
6 The GC Interface134
- Installing the GC Interface135
- Installing the GC Column141
- Configuring the GC and Autosampler143
- Removing the GC Interface143
7 The Direct Insertion Probe145
- Introduction146
- Installing the Probe Insertion Lock146
- Inserting and Removing the DI Probe148
- Controlling the DI Probe Temperature154
8 The Direct Chemical Ionization (DCI) Probe164
- Introduction164
- Installing the Probe Insertion Lock164
- Inserting and Removing the DCI Probe165
- Controlling the DCI Probe Current169
  - Ramping the Probe Current Manually169
  - Ramping the Probe Current Automatically170
9 FI/FD Operation171
- Introduction172
- Preparing the Instrument for FI/FD Operation172
  - Choosing an Emitter for the FI/FD Inner Source172
- Setting-Up for FI/FD Operation173
- Tuning in FI Mode190
  - Introducing the Reference Sample191
  - Obtaining a Beam and Tuning in FI Operation191
- General Considerations for Tuning in FI Mode193
  - Lens Tuning193
- Setting up and Calibrating the Instrument194
- Running Samples196
  - Running MS Samples in GC FI Mode196
  - Using Direct Insertion Probe in FI Mode196
- Tuning in FD Mode197
10 Routine Maintenance205
- Maintenance Schedule206
- Safety and Handling207
- Rotary Pump Oil208
- Rotary Pump Maintenance209
- Foreline Trap Maintenance215
- Reference Reservoir Maintenance220
- EI/CI Inner Source Maintenance222
- FI/FD Inner Source Maintenance236
  - Storing an Emitter236
  - Changing an Emitter237
- EI/CI Outer Source Maintenance239
- FI/FD Outer Source Maintenance246
  - Cleaning the Extraction Rods246
  - Cleaning the Source Ceramic and Focus Plates249
- Checking for Leaks after Source Maintenance252
  - Inspecting the CI Gas Line for Leaks252
- Detector Maintenance254
  - Conditioning the Detector254
  - Setting the Optimum Gain for the Detector256
11 Troubleshooting259
- Spare Parts260
- Safety and Handling260
- System Troubleshooting260
- Component Hardware Troubleshooting261
- Contacting Waters272
A Starting-Up and Shutting-Down the Instrument276
- Starting-Up the Instrument276
- Shutting-Down the Instrument277
B the Masslynx Tune Window279
- Opening the Masslynx Tune Window280
- The Tune Window Toolbar282
- The Tune Window File Menu283
- The Tune Window Ion Mode Menu285
- The Tune Window Vacuum Menu285
- The Tune Window Settings Menu288
- The Tune Window View Menu297
- The Tune Window Wizards Menu298
  - Tuning Using the Instrument Setup Wizard298
  - Calibrating the Instrument Using the Calibration Wizard298
- The Tune Window Tuning Controls299
- The Tune Window Peak Display323
  - Customizing the Peak Display323
- Setting up Nominal Mass325
- Setting up Resolution for Dead Time Correction Manually326
- Dead Time Correction327
- Effects of Saturation on Peak Shape329
C Calibration Reference Information333
- Overview334
- Editing a Calibration Reference File334
- Calibration Reference File334
- Perfluorotripentylamine (FC70_NCI-.Ref337
- DRE Calculation Files338
- Typical Lock Mass Values340
D External Connections342
- Safety Considerations342
- GCT Premier System External Wiring343
- GCT Premier System Vacuum Connections344
E Status Display Vacuum LED346
- Vacuum LED: Displays for Normal Instrument Operation346
- Vacuum LED: Displays for Instrument Faults349
F Performance Specifications352
- Performance Specifications352
- Mass Range352
- Resolution352
- Acquisition Rate352
- GC Sensitivity352
- Mass Accuracy352
- Dynamic Range353
G Theory and Principles of Operation355
- GCT Premier Functionality356
- Ionization Techniques357
General Considerations for Tuning360
Low Mass Cut-Off362
DRE Mode364
Multiple Peak Stitching366
Gain Drop Monitoring367

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