Specifications

General Maintenance 4
5975 Series MSD Troubleshooting and Maintenance Manual 105
To Reconnect the MSD to the 7890A GC/7820A/6890 GC
Materials needed
• Wrench, open-end, 1/4-inch × 5/16-inch (8710-0510)
Procedure
1 Position the MSD so the end of the GC/MSD interface is near the GC
(Figure 9).
2 Reconnect the GC/MSD interface cable.
3 Slide the MSD to its regular position next to the GC.
Be careful not to damage the GC/MSD interface as it passes into the GC.
Make sure the end of the GC/MSD interface extends into the GC oven.
4 The foreline pump may be located on the floor, on the lab bench next to or
behind the MSD, or under the analyzer chamber at the back of the MSD.
5 Reinstall the capillary column.
6 Pump down the MSD.
7 Turn on the GC. Enter appropriate temperature setpoints for the GC/MSD
interface and GC oven.
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