General Maintenance 4
5975/5977 Series MSD Operation Manual 91
Maintaining the Vacuum System
Periodic maintenance
As listed earlier in Table 16 on page 86, some maintenance tasks for the
vacuum system must be performed periodically. These include:
• Checking the foreline pump fluid (every week)
• Checking the calibration vial(s) (every 6 months)
• Replacing the foreline pump oil (every 6 months)
• Tightening the foreline pump oil box screws (first oil change after
installation)
• Replacing the diffusion pump fluid (once a year)
• Replacing the dry foreline pump seals (once a year)
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 foreline vacuum gauge or Micro-Ion vacuum gauge
should be performed only when needed. See the 5977B Series MSD
Troubleshooting and Maintenance manual and see the online help in
OpenLAB CDS GCMS Acquisition software for symptoms that indicate this
type of maintenance is required. See the 5977B Series MSD Troubleshooting
and Maintenance manual and see the online help in MassHunter GCMS
Acquisition 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 MSD Troubleshooting and Maintenance manual
that was shipped with your instrument.
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