62
2 Operating the MSD
To move or store the MSD
To move or store the MSD
Materials needed:
Ferrule, blank (5181-3308)
Interface column nut (05988-20066)
Wrench, open-end, 1/4-inch × 5/16-inch (8710-0510)
1 Vent the MSD (page 52).
2 Remove the column and install a blank ferrule and interface nut.
3 Tighten the vent valve.
4 If the MSD has a gauge controller, disconnect the cable from the triode
gauge tube.
5 Move the MSD away from the GC (page 112).
Unplug the GC/MSD interface heater cable from the GC.
6 Remove the upper MSD cover (page 50).
7 Tighten the side plate thumbscrews to “finger tight”.
8 Plug the MSD power cord in.
9 Switch the MSD on to establish a rough vacuum.
Verify that the foreline pressure is below 300 mTorr or the turbo pump speed
greater than 50%.
10 Switch the MSD off.
11 Reinstall the upper MSD cover.
12 Disconnect the HP-IB, remote, and power cables.
&$87,21
Do not overtighten the side plate thumbscrews. Overtightening will strip the threads in the
vacuum manifold. It will also warp the side plate and cause leaks.
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