Waters Xevo TQD, Overview And Maintenance Manual

Page: 180 / 250

4 Maintenance Procedures
180 March 14, 2014, 715004387 Rev. B
Replacing the roughing pump oil
Change the roughing pump oil annually.
Note:
This procedure is not required for an Edwards oil-free roughing pump.
Required materials
• Chemical-resistant, powder-free gloves
• 8-mm Allen wrench
• Flat-blade screwdriver
• Container to catch used oil
• Funnel
• 1-L container of Anderol vacuum oil, type GS 495
To replace the roughing pump oil:
1. Gas ballast the roughing pump for 1 hour, to reduce the oil’s viscosity
(see page 102 ).
Rationale:
Gas ballasting helps to circulate and mix the oil through the
pump before draining.
2. Vent and shut down the instrument (see the mass spectrometer’s online
Help for details).
3. Allow the roughing pump to cool.
4. Place the container for used oil under the pump’s drain plug.
Warning:
To avoid personal contamination with biohazards
or toxic materials, and to avoid spreading contamination to
uncontaminated surfaces, wear clean, chemical-resistant,
powder-free gloves when adding or replacing oil. The
roughing pump oil can be irritant, or contaminated with
biohazardous or toxic analyte accumulated during normal
operation.
Warning:
To avoid burn injuries, take great care while
working with the roughing pump; it can be hot.