Waters Xevo TQ-S Operator's, Overview And Maintenance Manual page 121

To fill the roughing pumps with oil:
1. Using the funnel, pour 1 L of vacuum oil, Leybonol LVO 110 or Anderol
GD32, into the oil filler aperture.
Use only the specified vacuum oils: Leybonol LVO 110 or
Important:
Anderol GD32.
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.
Caution:
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. Compression
Tip:
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.
Maintaining the Oerlikon Leybold oil-filled roughing pumps
To avoid oil leakage when fitting the oil filler plug to the
February 28, 2014, 715002212 Rev. C 121