5 General Maintenance
112 5975/5977 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.
Scheduled maintenance
Performing the common maintenance tasks when scheduled can reduce
operating problems, prolong system life, and reduce overall operating costs. (See
Table 15.)
Keep a record of system performance (tune reports) and maintenance
operations performed. This makes it easier to identify variations from normal
operation and to take corrective action.
Table 15 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 GC gas supplies As needed
Leak check system As needed
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