Models 947, 948 and 960 Leak Detectors Operations and Service Manual
4-2
Cleanliness is vital when servicing the leak detector or any vacuum equipment.
The following are especially important in the servicing of leak detectors:
CAUTION
Do not use silicone
oil or silicone grease.
Use powder-free butyl or polycarbonate gloves to prevent skin
oils from getting on vacuum surfaces.
Do not clean any aluminum parts with Alconox. Alconox is not
compatible with aluminum and will cause damage.
NOTE
Normally, the use of vacuum grease is unnecessary. If it must be
used, use it sparingly and avoid silicone types. Apiezon L
grease is recommended (Varian P/N 695400004).
When removing, checking, or replacing O-rings:
CAUTION
Remove O-rings carefully with your fingers. Do not use metal
tools which could scratch the sealing surfaces.
Do not use alcohol, methanol, or other solvents on O-rings.
To do so causes deterioration and reduces their ability to hold a
vacuum.
Wipe all O-rings clean with a lint-free cloth before installation
to ensure that no foreign matter is present to impair the seal.
Do not use grease or other substances on O-rings that come in
contact with the spectrometer tube.
Summary of Contents for 948
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