CI Maintenance 7
5977B Series MSD Operating Manual 211
To Remove the CI Source
Materials needed
• Gloves, clean, lint-free (Large 8650-0030) (Small 8650-0029)
• 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 Use tweezers to disconnect the wires from the CI source. Do not bend the
wires any more than necessary. (See “To Connect/Disconnect non-HES
Model Wiring from the CI Source” on page 212.)
Trace the wires for the ion source heater and temperature sensor to the
ceramic source board, and disconnect them there. (See “To
Connect/Disconnect EI HES Model Wiring to the CI Source” on page 213.)
4 Remove the two large thumbscrews that hold the ion source in place.
5 Pull the ion source out of the source radiator, and place it in its storage container.
The analyzers, 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.
Always wear clean gloves to prevent contamination when working in the analyzer
chamber.
Make sure you use an antistatic wrist strap, and take other antistatic precautions
before touching analyzer components.
When disconnecting leads, pull on the connectors, not on the wires.
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