Agilent 6500 Series Q-TOF LC/MS Maintenance Guide 139
Maintenance 2
Vacuum System
Vacuum System
This section lists procedures to maintain the vacuum system of the
instrument. Do these steps according to the maintenance schedule or as
indicated by instrument symptoms.
To check the rough pump fluid level
Do these steps for LC/MS systems that use oil-based vacuum pumps.
Check the level and color of the pump fluid weekly.
• Check the fluid level in the window of the rough pump. The fluid level
should be between the marks for Max and Min (see Figure 76).
• 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.
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