6 General Maintenance
144 5977B Series MSD Operating Manual
Before Starting
You can perform much of the maintenance required by your MSD. For your
safety, read all of the information in this introduction before performing any
maintenance tasks.
Table 1 6 Maintenance schedule
Task Frequency
Check the foreline pump oil level Every week
Check the calibration vial(s) Every 6 months
Replace the foreline pump oil
*
* Every 3 months for CI MSDs using ammonia reagent gas.
Every 6 months
Replace the diffusion pump fluid Every year
Change the dry foreline pump tip seal Every year
Check the dry foreline pump As needed
Tune the MSD As needed
Change the foreline pump exhaust filter As needed
Clean the ion source As needed
Check the carrier gas trap(s) on the GC and MSD As needed
Replace the worn out parts As needed
Lubricate sideplate or vent valve O-rings
†
† Vacuum seals other than the side plate O-ring and vent valve O-ring do
not need to be lubricated. Lubricating other seals can interfere with
their correct function.
As needed
Replace CI Reagent gas supply As needed
Replace GC gas supplies As needed
Leak check system As needed
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