7 General Maintenance
To Open the Analyzer Chamber
176 5977B Series MSD Operating Manual
To Open the Analyzer Chamber
The analyzer chamber should only be opened to clean or replace the ion source,
change the detector’s EM, or to change a filament.
Materials needed
• Gloves, clean, lint-free
• Large (8650-0030)
• Small (8650-0029)
• Wrist strap, antistatic
• Small (9300-0969)
• Medium (9300-1257)
• Large (9300-0970)
Procedure
1 Vent the MSD. (See “To Vent the MSD” on page 136.)
2 Open the left side panel. (See “To Open the MSD Covers” on page 135.)
3 Loosen the analyzer side plate thumbscrews if they are fastened. (See
Figure 54 on page 177.)
Electrostatic discharges to analyzer components are conducted to the quad
driver board, where they can damage sensitive components. Wear a grounded
antistatic wrist strap and take other antistatic precautions (See “Electrostatic
discharge” on page 171.) before you open the analyzer chamber.
The analyzer, GC/MSD 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.
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