Waters Xevo G2-XS QTof Overview And Maintenance Manual page 122

6 Maintenance Procedures
To fill the roughing pump with oil:
1. Using the funnel, pour 1 liter of vacuum oil, type LEYBONOL LVO110,
into the oil filler aperture.
Requirement:
After you add the oil, the level appearing in the sight glass can be
Tip:
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.
Notice:
roughing pump,
• ensure that the plug is not cross threaded.
• ensure that the O-ring is not pinched.
• do not over tighten the plug.
3. Use the 12-mm Allen wrench to refit the oil filler plug.
When the plug is tightened, it seals against an O-ring. Increased
Tip:
torque does not improve the plug seal; it only makes the plug difficult to
remove later.
122 April 2, 2015, 715004496 Rev. B
Use only vacuum oil, type LEYBONOL LVO110.
To avoid oil leakage when fitting the oil filler plug to the