Operating in EI Mode 4
5977B Series MSD Operating Manual 115
7 Close shutoff valves to hydrogen sources that enter the analyzer if the
instrument is so equipped.
8 When prompted, turn the vent valve knob counterclockwise only 3/4 turns
or until you hear the hissing sound of air flowing into the analyzer chamber.
(See Figure 38.)
Do not turn the knob too far, or the O-ring may fall out of its groove.
Never open the vent valve without first closing the hydrogen supply line to all
possible sources of hydrogen entry to the analyzer. This requires closing the
hydrogen shutoff valve to the carrier gas flow module and the shutoff valve to the
JetClean system supply if either of these hydrogen sources exist on the instrument.
Figure 38 Vent valve knob
To Next Page
Loading...
Need help?
General
