General Maintenance 4
5977B Series MSD Troubleshooting and Maintenance Manual 91
Before Starting
For your safety, read all of the information in this introduction before
performing any maintenance tasks.
Scheduled maintenance
Performing common maintenance tasks when scheduled can reduce operating
problems, prolong system life, and reduce overall operating costs. (See
Table 9.)
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.
Tab le 9 Maintenance schedule
Task Every week Every 6 months Every year As needed
Tune the MSD X
Check the foreline pump oil level X
Check the calibration vial(s) X
Replace the foreline pump oil
†
X
Replace the DP fluid X
Check the dry foreline pump X
Change the dry foreline pump tip seal X
Change the foreline pump exhaust filter X
Clean the ion source X
Check the carrier gas trap(s) on the GC and MSD X
Replace the worn out parts X
Lubricate sideplate or vent valve O-rings
*
X
Replace CI Reagent gas supply X
Replace GC gas supplies X
† Every 3 months for CI MSDs using ammonia reagent gas.
* 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.
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