Agilent Technologies 5975T LTM GC Operation Manual page 98

3
Operating in Electron Impact (EI) Mode
Vent valve knob
Figure 25 Venting the MSD
6 Turn the vent valve knob
Allow the analyzer to cool to near room temperature before touching it.
WA R N I N G
Always wear clean gloves while handling any parts that go inside the analyzer
C A U T I O N
chamber.
When the MSD is vented, do not put the ChemStation into Instrument Control view.
WA R N I N G
Doing so will turn on the interface heater.
98
until you hear the hissing sound of air flowing into the analyzer chamber.
Do not turn the knob too far or the O-ring may fall out of its groove. Be sure
to retighten the knob before pumping down.
YES
(Figure 25) counterclockwise only 3/4 turns or
5975T LTM GC/MSD Operation Manual
NO