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5
Operating in EI Mode
To Vent the MS
7000/7010 Series TQ GC/MS Operating Manual
125
7
Remove the analyzer window cover. (See
Access to the Analyzer Chambers”
8
Turn the vent valve knob counterclockwise
only
3/4 turn or until you hear the
hissing sound of air flowing into the analyzer chamber. (See
.)
Do
not
turn the knob too far or the O-ring may fall out of its groove.
WARNING
Allow the analyzers to cool to near room temperature before touching them.
CAUTION
Always wear clean gloves while handling any parts that go inside the analyzer
chambers.
Figure 42.
The MS vent valve knob
YES
NO
Vent valve knob