Maintaining The Vacuum System - Agilent Technologies 5975C TAD VL MSD Troubleshooting And Maintenance Manual

Maintaining the Vacuum System

Periodic maintenance
As listed earlier in
must be performed periodically. These include:
• Checking the foreline pump fluid (every week)
• Checking the calibration vial (every 6 months)
• Ballasting the foreline pump (daily in MSDs using ammonia reagent gas)
• Replacing the foreline pump oil (every 6 months; every 3 months for CI
• Tightening the foreline pump oil box screws (first oil change after
• Replacing the diffusion pump fluid (once a year)
• Checking the dry foreline pump diaphragms (typically every 3 years)
Failure to perform these tasks as scheduled can result in decreased
instrument performance. It can also result in damage to your instrument.
Other procedures
Tasks such as replacing a Micro-Ion vacuum gauge should be performed only
when needed. See
help in the MSD ChemStation software for symptoms that indicate this type of
maintenance is required.
More information is available
If you need more information about the locations or functions of vacuum
system components, See
Most of the procedures in this chapter are illustrated with video clips on this
5975 Series MSD User Information DVD.
5975 Series MSD Troubleshooting and Maintenance Manual
Table
MSDs using ammonia reagent gas, standard foreline pump)
installation, standard foreline pump)
"General Troubleshooting"
8, some maintenance tasks for the vacuum system
"Vacuum System" on page 171.
General Maintenance
on page 29 and see the online
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