Varian 959D, Operation Manual

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3-1
959D Leak Detector
Section 3. Maintenance and Parts Replacements
The 959D requires periodic maintenance to assure continued reliable operation and
accurate measurements. After prolonged use, the leak detector accumulates contaminants
from even the cleanest of products tested. These contaminants eventually impair operation.
In most cases, a cleaning of the spectrometer tube assembly consisting of the ion source and
the preamplifier can be done by user maintenance personnel. If the ion source exhibits
severe contamination or if a filament is burned out, replacement of the ion source may be
required. Advice on cleaning and replacing components of the spectrometer tube can be
obtained by contacting Customer Service at Varian Vacuum Technologies.
3.1 Safety and Maintenance
3.1.1 AC Power
WARNING
Disconnect power from the 959D before performing any
maintenance procedure that requires physically disconnecting
any part of the system.
3.1.2 Static Charge
CAUTION
Wear a grounding device when performing any maintenance
on the 959D and especially when performing maintenance of
static-sensitive parts.
3.1.3 Ion Source
WARNING
When handling the ion source, wear powder-free butyl or
polycarbonate gloves.
If you handle the ion source with bare hands, wash them
thoroughly, especially before smoking or eating.