Operating in Electron Ionization (EI) Mode 3
5977 Series MSD Operation Manual 79
3 Loosen the side plate thumbscrews 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
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.
WARNING
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.
CAUTION
Always wear clean gloves to prevent contamination when working in the analyzer
chamber.
Detector
Ion source
Side plate
Feedthrough
board
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