Agilent Technologies 5975C TAD VL MSD Operating manual

Agilent Technologies
Agilent 5975 Series
MSD
Troubleshooting and
Maintenance Manual

2 5975 Series MSD Troubleshooting and Maintenance Manual
Notices
© Agilent Technologies, Inc. 2012
No part of this manual may be reproduced in
any form or by any means (including elec-
tronic storage and retrieval or translation
into a foreign language) without prior agree-
ment and written consent from Agilent
Technologies, Inc. as governed by United
States and international copyright laws.
Manual Part Number
G3170-90037
Edition
Fourth edition, January 2012
Replaces G3170-90021
Printed in USA
Agilent Technologies, Inc.
5301 Stevens Creek Boulevard
Santa Clara, CA 95052
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ject to being changed, without notice,
in future editions. Further, to the max-
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Safety Notices
CAUTION
A CAUTION notice denotes a
hazard. It calls attention to an
operating procedure, practice, or
the like that, if not correctly
performed or adhered to, could
result in damage to the product or
loss of important data. Do not
proceed beyond a CAUTION notice
until the indicated conditions are
fully understood and met.
WARNING
A WARNING notice denotes a
hazard. It calls attention to an
operating procedure, practice, or
the like that, if not correctly
performed or adhered to, could
result in personal injury or death.
Do not proceed beyond a
WARNING notice until the
indicated conditions are fully
understood and met.

5975 Series MSD Troubleshooting and Maintenance Manual 3
Contents
1 Introduction
5975 Series MSD Version 10
Abbreviations Used 11
The 5975 Series MSD 13
MSD Hardware Description 15
Electron Ionization (EI) systems 16
Chemical Ionization (CI) systems 16
Changing modes 17
Important Safety Warnings 18
Hydrogen Safety 20
Safety and Regulatory Certifications 25
Cleaning/Recycling the Product 28
Moving or Storing the MSD 28
2 General Troubleshooting
Troubleshooting Tips and Tricks 30
General Symptoms 31
Chromatographic Symptoms 33
Mass Spectral Symptoms 38
Pressure Symptoms 42
Temperature Symptoms 45
Error Messages 47
Air Leaks 53
Contamination 54

4 5975 Series MSD Troubleshooting and Maintenance Manual
3 CI Troubleshooting
Common CI-Specific Problems 58
Troubleshooting Tips and Tricks 59
Air Leaks 60
Pressure-Related Symptoms 64
Signal-Related Symptoms 68
Tuning-Related Symptoms 77
4 General Maintenance
Before Starting 84
Maintaining the Vacuum System 89
To Remove the MSD Covers 90
To Connect the Micro-Ion Vacuum Gauge 92
To Move or Store the MSD 94
To Check and Add Foreline Pump Oil 96
To Drain the Foreline Pump 98
To Refill the Foreline Pump 100
To Check the Diffusion Pump Fluid 101
To Separate the MSD from the GC 103
To Reconnect the MSD to the 7890A GC/7820A/6890 GC 105
To Reconnect the MSD to the 6850 GC 106
To Refill the EI Calibration Vial 109
To Purge the Calibration Valves 111
To Remove the EI Calibration and Vent Valve Assembly 112
To Reinstall the EI Calibration and Vent Valve Assembly 113
To Replace the Fan for the High Vacuum Pump 114

5975 Series MSD Troubleshooting and Maintenance Manual 5
To Remove the Micro-Ion Vacuum Gauge 116
To Reinstall a Micro-Ion Vacuum Gauge 117
To Lubricate the Side Plate O-Ring 118
To Lubricate the Vent Valve O-Ring 120
To Remove the Diffusion Pump 122
To Replace the Diffusion Pump Fluid 124
To Reinstall the Diffusion Pump 127
To Remove the Foreline Gauge 129
To Reinstall the Foreline Gauge 130
Maintaining the Analyzer 131
Maintaining the GC/MSD Interface 153
Maintaining the Electronics 157
5 CI Maintenance
To Clean the CI Ion Source 164
To Minimize Foreline Pump Damage from Ammonia (Standard
Pump) 166
To Replace the Methane/Isobutane Gas Purifier 167
To Clean the Reagent Gas Supply Lines 168
To Refill the CI Calibrant Vial 169
6 Vacuum System
Overview 172
Vacuum System Components 173
Common Vacuum System Problems 174
Foreline Pump 175
High Vacuum Pump 178

6 5975 Series MSD Troubleshooting and Maintenance Manual
Diffusion pump system 178
Turbo pump system 178
Analyzer Chamber 179
Diffusion pump version 179
Turbo pump version 179
Side Plate 180
Vacuum Seals 182
Foreline Gauge 184
Diffusion Pump and Fan 185
Turbo Pump and Fan 191
Calibration Valves and Vent Valve 192
Micro-Ion Vacuum Gauge 195
7 Analyzer
Overview 198
EI Ion Source 200
CI Ion Source 202
Filaments 204
Other Source Elements 206
Quadrupole Mass Filter 208
Detector 211
Analyzer Heaters and Radiators 213
8 Electronics
Local Control Panel and Power Switch 217
Side Board 218
Electronics Module 219

5975 Series MSD Troubleshooting and Maintenance Manual 7
LAN/MS Control Card 223
Power Supplies 224
Back Panel and Connectors 225
Interfacing to External Devices 228
9 Parts
To Order Parts 232
Electronics 233
Local Control Panel 238
Vacuum System 240
Analyzer 250
EI GC/MSD Interface 259
Consumables and Maintenance Supplies 260
CI Parts 265
Index 271

8 5975 Series MSD Troubleshooting and Maintenance Manual

9
Agilent 5975 Series MSD
Troubleshooting and Maintenance Manual
Agilent Technologies
1
Introduction
5975 Series MSD Version 10
Abbreviations Used 11
The 5975 Series MSD 13
Physical description 13
Local control panel 13
Vacuum gauge 13
MSD Hardware Description 15
Important Safety Warnings 18
Many internal parts of the MSD carry dangerous voltages 18
Electrostatic discharge is a threat to MSD electronics 18
Many parts are dangerously hot 19
The oil pan under the standard foreline pump can be a fire hazard 19
Hydrogen Safety 20
Dangers unique to GC/MSD operation 21
Hydrogen accumulation in an MSD 21
Precautions 23
Safety and Regulatory Certifications 25
Information 25
Symbols 26
Electromagnetic compatibility 27
Sound emission declaration 27
Cleaning/Recycling the Product 28
Moving or Storing the MSD 28
This manual describes the troubleshooting and maintenance of the Agilent
Technologies 5975 Series Mass Selective Detector (MSD). It assumes
familiarity with the procedures and information detailed in the 5975 Series
MSD Operation Manual and with the Agilent MSD ChemStation software.

10 5975 Series MSD Troubleshooting and Maintenance Manual
1Introduction
5975 Series MSD Version
5975 Series MSDs are equipped with a diffusion pump or one of two
turbomolecular (turbo) pumps. The serial number label displays a product
number (Table 1) that indicates what kind of MSD you have.
Table 1 Available high vacuum pumps
Model name Product number Description Ionization modes
5975C TAD VL MSD G3170A Diffusion Pump MSD Electron impact (EI)
5975C TAD inert MSD
5975C TAD inert XL MSD
G3171A
G3172A
Standard Turbo MSD
Performance Turbo MSD
Electron impact (EI)
Electron impact (EI)
5975C TAD inert XL EI/CI
MSD
G3174A CI Performance Turbo Pump Electron impact (EI)
Negative chemical ionization (NCI)
Positive chemical ionization (PCI)
7820 VL MSD G3175A Diffusion Pump MSD Electron impact (EI)
7820 MSD G3176A Standard Turbo MSD Electron impact (EI)