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Troubleshooting and Maintenance Guide
12
Vacuum System
Overview
The vacuum system creates the high vacuum (low pressure)
required for the instrument to operate. Without the vacuum, the
molecular mean free path would be very short and ions would
collide with air molecules before they could reach the detector
operation at high pressures also would damage analyzer
components.
The instrument uses two vacuum pumps to obtain the vacuum
levels needed. One of two types of foreline pumps (standard or
dry) creates a low vacuum, then a high vacuum standard
turbomolecular (turbo) pump engages to create the vacuum
needed for operation.
Most vacuum system operation is automated. Operator
interaction is through the data system or control panel. Monitor
the vacuum system through the data system and/or local
control panel.
Table 11
Recommended maximum flow rates per high vacuum pump
Model number
Description
Maximum recommended
column flow
G4362A
Standard turbo pump, EI
2.0 mL/min
Summary of Contents for 5975T LTM GC/MSD
Page 1: ...Agilent Technologies Agilent 5975T LTM GC MSD Troubleshooting and Maintenance Guide...
Page 10: ...10 Troubleshooting and Maintenance Guide...
Page 32: ...32 Troubleshooting and Maintenance Guide 2 Concepts and General Tasks...
Page 72: ...72 Troubleshooting and Maintenance Guide 3 Chromatographic Symptoms...
Page 86: ...86 Troubleshooting and Maintenance Guide 5 ALS Symptoms...
Page 98: ...98 Troubleshooting and Maintenance Guide 7 Instrument Power On and Communication Symptoms...
Page 108: ...108 Troubleshooting and Maintenance Guide 9 Troubleshooting Tasks...
Page 166: ...166 Troubleshooting and Maintenance Guide 10 General Maintenance...
Page 214: ...214 Troubleshooting and Maintenance Guide 13 Analyzer...