Operating in Electron Impact (EI) Mode 3
5975 Series MSD Operation Manual for MassHunter 97
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)
Procedure
1 Vent the MSD (See “To Vent the MSD” on page 85.).
2 Remove the column and install a blank ferrule and interface nut.
3 Tighten the vent valve.
4 Move the MSD away from the GC (see the 5975 Series MSD Troubleshooting
and Maintenance Manual).
5 Unplug the GC/MSD interface heater cable from the GC.
6 Install the interface nut with the blank ferrule.
7 Open the analyzer cover ( “To Remove the MSD Covers” on page 83).
8 Finger-tighten the side plate thumbscrews (Figure 19).
9 Plug the MSD power cord in.
10 Switch the MSD on to establish a rough vacuum. Verify that the turbo pump
speed is greater than 50% or that the foreline pressure is 1 Torr.
11 Switch the MSD off.
12 Close the analyzer cover.
13 Disconnect the LAN, remote, and power cables.
CAUTION
Do not overtighten the side plate thumbscrews. Overtightening will strip the threads in
the analyzer chamber. It will also warp the side plate and cause leaks.
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