4-17
Model 979 Series Helium Mass Spectrometer Leak Detector
DRAFT 9/15/03
4. Repeat steps 1, 2, and 3 (Section 4.3.5 “Remove the Magnetic Poles” on page 4-16) to
remove the second magnetic pole piece (Figure 4-19) from the other side of the
spectrometer tube body.
Figure 4-19
Removing the Second Magnetic Pole Piece
4.3.6 Examining and Cleaning the Spectrometer Parts
1. Using the Scotch-Brite™ pad from the spectrometer tube cleaning kit, polish away any
discolored areas inside the spectrometer tube cavity.
2. Using the Scotch-Brite pad, polish away any discolored areas of the ground slit plate
(Figure 4-20).
Figure 4-20
Discolored Ground Slit Plate
CAUTION
The ground slit plate is very thin. Take care not to bend or
disfigure it during cleaning.
Summary of Contents for 979 Series
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