CI Maintenance 7
5977B Series MSD Operating Manual 223
To Remove the CI Source Filament
Materials needed
• Gloves, clean, lint-free (Large 8650-0030) (Small 8650-0029)
• Hex ball driver, 1.5 mm (8710-1570)
• Tweezers (8710-2460)
Procedure
1 Vent the MS. (See “To Vent the MSD” on page 113.)
2 Open the analyzer chamber. (See “To Open the Analyzer Chamber” on page 152.)
3 Remove the CI source. (See “To Remove the CI Source” on page 211.)
4 Remove the screw holding the filament to the CI source body. (See
Figure 73.)
5 Slide the filament off the CI source assembly. (See Figure 73.)
Always wear clean gloves to prevent contamination when working in the analyzer chamber.
The analyzer, GC/MS interface, and other components in the analyzer chamber
operate at very high temperatures. Do not touch any part until you are sure it is cool.
Figure 73 Changing the CI source filament
Filament
Screw
CI source body
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