Side Plate - Agilent Technologies 5975C TAD VL MSD Troubleshooting And Maintenance Manual

6
Vacuum System

Side Plate

The side plate
chamber. It is attached to the manifold with a hinge. The analyzer assembly is
attached to the side plate inside the analyzer chamber. The hinge allows the
side plate to swing away from the manifold for easy access to the analyzer.
Several electrical feedthroughs are built into the side plate. Wires connect the
feedthroughs to analyzer components. The electronic side board is mounted on
the atmospheric side of the side plate.
Thumbscrews are located at each end of the side plate.
Fasten both side plate thumbscrews for shipping or storage only. For normal operation,
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both thumbscrews should be loose. For operation with hydrogen carrier gas, or with
flammable or explosive CI reagent gases, the front thumbscrew should be fastened just
finger-tight. Overtightening will warp the side plate and cause air leaks. Do not use a
tool to tighten the side plate thumbscrews.
When you turn on the power to pump down the MSD, be sure to press on the side
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board to ensure a good seal.
180
(Figure 37) covers the large opening in the side of the analyzer
5975 Series MSD Troubleshooting and Maintenance Manual