Waters Xevo G2-XS QTof Overview And Maintenance Manual page 109

Tip:
After you add the oil, the level appearing in the sight glass can be above the
maximum indication. This apparent excess does not suggest a problem. During the first
few days of operation, the oil level falls to within the normal operating range.
2. Ensure that the O-ring on the oil filler plug is clean and properly seated.
3. Use the 12-mm hex wrench to refit the oil filler plug.
Tip:
When the plug is tightened, it seals against an O-ring. Compression is controlled by
the O-ring groove depth in the plug. Increased torque does not improve the plug seal. It
only makes the plug difficult to remove later.
7.12.4.4 Removing the roughing pump's oil demister element
Required materials
• Chemical-resistant, powder-free gloves
• 6-mm hex wrench
• 10-mm open-end wrench
To remove the roughing pump oil demister element:
1. Vent and shut down the instrument (see the mass spectrometer's online Help for details).
2. Allow the roughing pump to cool.
Warning:
corrosive materials, wear chemical-resistant, powder-free gloves when performing this
procedure.
Notice:
To avoid oil leakage when fitting the oil drain plug or oil filler plug to the
roughing pump:
• Ensure that the plug is not cross-threaded.
• Ensure that the O-ring is not pinched.
• Do not overtighten the plug.
To avoid personal contamination with biologically hazardous, toxic, and
Warning:
To avoid burn injuries, take great care while working with the
roughing pump.
March 31, 2021, 715004496 Ver. 04 (previously released as Rev. D)
Page 109