General Maintenance 4
Troubleshooting and Maintenance Manual 103
To lubricate the side plate O-rings
Materials needed
• Cloths, clean (05980-60051)
• Gloves, clean, lint-free
• Large (8650-0030)
• Small (8650-0029)
• Grease, Apiezon L, high-vacuum (6040-0289)
The side plate O-rings may require a thin coat of grease to ensure a good
vacuum seal. If an O-ring appears dry or does not seal correctly, lubricate it
using this procedure. A good test is to wipe off the side plate with methanol,
then close the analyzer chamber. If the O-ring has enough grease on it, it will
leave a faint trace on the side plate.
Procedure
1 Vent the MS. See the Agilent 7000 Series Triple Quad GC/MS Operation
Manual.
2 Open an analyzer chamber.
3 Use a clean, lint-free cloth or glove to spread a thin coat of high-vacuum
grease only on the exposed surface of the O-ring (Figure 11).
The analyzer, GC/MS interface, and other components in the analyzer chamber
operate at very high temperatures. Do not touch any part until you are sure it is cool.
Vacuum seals other than the side plate O-ring and vent valve O-ring do not need to be
lubricated. Lubricating other seals can interfere with their correct function.
Always wear clean gloves to prevent contamination when working in the analyzer
chamber.
Electrostatic discharges to analyzer components are conducted to the quad driver
board, where they can damage sensitive components. Wear a grounded antistatic
wrist strap and take other antistatic precautions (see “Electrostatic discharge is a
threat to MS electronics” on page 13) before you open the analyzer chamber.
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