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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
• Replacing the foreline pump oil every 6 months
• Tightening the foreline pump oil box screws (first oil change after
• Checking the dry foreline pump diaphragms (typically every 3 years)
• Changing scroll pump tip seals (yearly)
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 the Agilent 5975T LTM GC/MSD Troubleshooting and
Maintenance Manual or the online 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 the Agilent 5975T LTM GC/MSD Troubleshooting and
Maintenance Manual.
Most of the procedures in this chapter are illustrated with video clips on this
5975T LTM GC/MSD Instrument Utilities DVD.
5975T LTM GC/MSD Operation Manual
Table
installation, standard foreline pump)
17, some maintenance tasks for the vacuum system
General Maintenance
4
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