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6
Vacuum System
•
Do not touch the fluid. The residue from some samples are toxic. Properly
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dispose of the fluid.
When you close the ballast valve, you increase the efficiency of the pump.
NOTE
However, you lose oil to the mist filter if you don't recycle. Check the status of
your oil mist filter at least once per week to ensure that it does not fill with oil.
If you lose too much oil in the foreline pump, the vacuum will not be
maintained, and the MS will vent.
To check the rotary vane foreline pump fluid
level
Check the level and color of the pump fluid weekly.
•
•
Never add or replace the foreline pump fluid while the pump is on.
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Record this procedure in the Maintenance Logbook, which was supplied with
NOTE
your instrument.
To add oil to the rotary vane foreline pump
Add pump oil when the pump oil level is low.
Materials needed
•
•
100
If oil is found in the oil mist filter, open the gas ballast valve counterclockwise
just enough to return the condensed oil back to the pump. Close the gas
ballast valve clockwise.
Check the fluid level in the window of the foreline pump. The fluid level should
be between the marks for Max and Min.
Check that the color of the pump fluid is clear or almost clear with few
suspended particles. If the pump fluid is dark or full of suspended particles,
replace it.
Funnel
Gloves, clean, lint-free
7250 Accurate-Mass Q-TOF Troubleshooting and Maintenance Manual
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Table of Contents
Troubleshooting
