7 General Maintenance
To Remove the EI HES
7000/7010 Series TQ GC/MS Operating Manual 159
To Remove the EI HES
Materials needed
• Gloves, clean, lint-free (Large 8650-0030) (Small 8650-0029)
• Tweezers (8710-2460)
Procedure
1 Vent the MS. (See “To Vent the MS” on page 124.)
2 Open the front analyzer chamber. (See “To Open the Front Analyzer
Chamber” on page 156.)
3 Remove the two large thumbscrews that hold the ion source in place. (See
Figure 48 on page 160.)
4 Disconnect wiring from the EI HES. Do not bend the wires any more than
necessary. (See “To Connect or Disconnect Wiring to the EI HES” on
page 161.)
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.
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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