Models 947, 948 and 960 Leak Detectors Operations and Service Manual
B-6
B.2 Replacing the Ion Source
If the ion source needs replacement (Figure B-5), replace it during spectrometer tube
cleaning. Adjustment is required after replacement is complete. Refer to “Calibration and
Sensitivity Checks” on page 3-11 for the adjustment procedures.
WARNING
Store the Ion Source in a cool, dry area in a tightly
sealed container. Wash hands thoroughly after handling
the Ion Source and especially before smoking or eating.
CAUTION
Use powder-free butyl or polycarbonate gloves to
prevent skin oils from getting on vacuum surfaces.
To replace the ion source:
1. Remove the spectrometer tube from the leak detector as described in “Removing and
Replacing both the Spectrometer Tube Assembly and Preamplifier” on page 4-23.
Figure B-5
Ion Source Replacement
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