88 5975 Series MSD Operation Manual for MassHunter
3 Operating in Electron Impact (EI) Mode
To Open the Analyzer Chamber
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 ( “To Vent the MSD” on page 85).
2 Disconnect the side board control cable and the source power cable from
the side board.
3 Loosen the side plate thumbscrews (Figure 16) if they are fastened.
The rear side plate thumbscrew should be unfastened during normal use. It
is only fastened during shipping. The front side plate thumbscrew should
only be fastened for CI operation or if hydrogen or other flammable or toxic
substances are used for carrier gas.
4 Gently swing the side plate out.
CAUTION
Electrostatic discharges to analyzer components are conducted to the side board
where they can damage sensitive components. Wear a grounded antistatic wrist strap
and take other antistatic precautions (see page 137) before you open the analyzer
chamber.
CAUTION
In the next step, if you feel resistance, stop. Do not try to force the side plate open.
Verify that MSD is vented. Verify that both the front and rear side plate screws are
completely loose.
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