O-Ring Care - Agilent Technologies 947 Betriebs- Und Servicehandbuch

Models 947, 948 and 960 Leak Detectors Operations and Service Manual

O-ring Care

When removing, checking, or replacing O-rings, keep in mind the following:
NOTE
CAUTION
NOTE
Varian Vacuum Technologies recommends replacing
all O-rings during routine maintenance or during any
maintenance procedure requiring that O-rings be
removed.
Remove O-rings carefully with your fingers. Do not use
metal tools for this task. Follow these guidelines to
prevent scratching of any sealing surfaces:
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 use other substances on
O-rings that will come in contact with the
spectrometer tube.
Do not use alcohol, methanol, or other solvents on
O-rings. To do so causes deterioration and reduces
the O-ring's ability to hold a vacuum.
In allowable situations, apply a small amount of
Apiezon L grease and wipe the O-rings "shiny" dry.
VacuSolv, included in the Component and
Spectrometer Tube Cleaning Kit (Part No. 670029096),
is recommended for cleaning the spectrometer tube
components.
VacuSolv can also be used for fine cleaning of other
parts in the leak detector's vacuum system, such as
valves and fittings. No rinsing steps or high-temperature
drying is required following cleaning with VacuSolv.
Although appropriate precautions are advised,
VacuSolv is compatible with most materials and does
not contain toxic chemicals or CFCs
(chlorofluorocarbons).
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