Waters Xevo G2 QTof Operator's, Overview And Maintenance Manual page 103

Filling the pump with oil:
Warning:
with analyte accumulated during normal operation. Always wear
chemical-resistant, powder-free gloves when performing this
procedure.
To avoid oil leakage when fitting the oil drain plug to the
Caution:
roughing pump,
• ensure that the O-ring on the pump's oil drain plug is clean and
properly seated.
• ensure that the plug is not cross-threaded.
• ensure that the O-ring is not pinched.
• do not overtighten the plug.
1. Use the 8-mm Allen wrench to fit, and tighten the roughing pump's oil
drain plug.
When the oil drain plug is tightened, the plug seals with an O-ring.
Tip:
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.
Caution:
2. Using the funnel, pour 1 L of Varian GP45 oil into the oil filler aperture.
At first, the oil level can be above the sight-glass MAX level.
Tip:
Nevertheless, it falls to the MAX level or below during the first few days
of operation.
Caution:
roughing pump,
• ensure that the O-ring on the pump's oil drain plug is clean and
properly seated.
• ensure that the plug is not cross-threaded.
• ensure that the O-ring is not pinched.
• do not over tighten the plug.
3. Fit and tighten the oil filler plug.
The roughing pump components can be contaminated
To maintain pump performance, use Varian GP45 oil.
To avoid oil leakage when fitting the oil filler plug to the
Replacing the Varian roughing pump's oil and oil mist filter 5-27