Replacing The Roughing Pumps' Oil And Oil Demister Elements - Waters Xevo TQ-S Operator's, Overview And Maintenance Manual

Replacing the roughing pumps' oil and oil demister elements

Replace the roughing pumps' oil and oil demister elements annually.
This procedure is not required for an Edwards oil-free roughing pump.
Note:
Required materials
• Chemical-resistant, powder-free gloves
• 12-mm Allen wrench
• 10-mm wrench
• Container to catch used oil
• Funnel
• Anderol vacuum oil, type GD32l
To prepare for replacing the roughing pumps' oil and oil demister elements:
1. Gas ballast each roughing pump for 1 hour (see
Rationale:
pump before draining.
2. Vent and shut down the mass spectrometer (see the mass spectrometer's
online Help for details).
Warning:
roughing pumps and mass spectrometer, disconnect the power
cords for the mass spectrometer and roughing pumps from the
main power source.
3. Disconnect the power cords for the mass spectrometer and both
roughing pumps from the main power source.
4. Allow the roughing pumps to cool.
Gas ballasting helps circulate and mix the oil through the
To avoid personal injury, as well as damage to the
Maintaining the Oerlikon Leybold oil-filled roughing pumps
page 4-24).
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