To Close The Analyzer Chamber - Agilent Technologies 5977B Series Operating Manual

6 General Maintenance

To Close the Analyzer Chamber

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Procedure
1 Ensure all the internal analyzer electrical leads are correctly attached.
Do not force the analyzer door when closing, or you may damage the quadrupole.
C A U T I O N
2 Swing the analyzer side plate closed.
3 Ensure the vent valve is closed.
4 If hydrogen or other flammable or toxic substance is used for carrier gas,
5 Pumpdown the MSD. (See
The top thumbscrew must be fastened if hydrogen (or other hazardous gas) is being
WA R N I N G
used as the GC carrier gas or if hydrogen is used for the JetClean system. In the
unlikely event of an explosion, it may prevent the side plate from opening.
Do not overtighten the thumbscrew; it can cause air leaks or prevent successful
C A U T I O N
pumpdown. Do not use a screwdriver to tighten the thumbscrew.
6 Once the MSD has pumped down, close the left analyzer cover and replace
7 Tune the MSD.
196
Wiring is not the same for both the EI and CI sources. (See
Connect/Disconnect Wiring from the EI XTR, SS, and Inert Sources"
page 173.)
Check the side plate O-ring.
Make sure the O-ring has a very light coat of Apiezon L high vacuum
grease. If the O-ring is very dry, it may not seal well. If the O-ring looks
shiny, it has too much grease on it. Refer to the
Troubleshooting and Maintenance Manual
gently hand-tighten the top thumbscrew on the analyzer side plate.
the window cover.
for lubricating instructions.
"To Pumpdown the MSD"
5977B Series MSD Operating Manual
"To
on
5977 Series MS
on page 116.)
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