Waters Xevo TQ MS, Operator And Maintenance Manual, Page: 67 / 184

Adding oil to the Varian roughing pump 4-19
To add oil to the roughing pump
1. Vent and shut down the mass spectrometer (see the mass spectrometer’s
online Help for details).
2. Allow the oil to settle in the pump.
3. Unscrew and remove the roughing pump’s oil filler plug.
4. Using the funnel, slowly add Varian GP45 oil into the oil filler aperture
until the oil reaches the oil level sight glass maximum level.
5. Fit and tighten the roughing pump’s oil filler plug.
6. Start the mass spectrometer (see “Starting the mass spectrometer” on
page 2-2 ).
Tips:
After you add oil to the pump, the following situations can occur:
• The oil level drops slightly during the first month of operation.
• The oil changes color (darkens) over time.
• When the pump approaches operating temperature, any oil spilled
becomes odorous.
Warning:
The pump oil can be contaminated with analyte
accumulated during normal operation. Always wear
chemical-resistant, powder-free gloves when adding or
replacing oil.
Warning:
To avoid burn injuries, take great care while working
with the roughing pump: it can be hot.
Caution:
To maintain pump performance, use only Varian GP45
oil.
Caution:
To avoid oil leakage, when fitting the oil filler plug to
the roughing pump,
• ensure that the plug is not cross threaded.
• do not over-tighten the plug.