Agilent Technologies 7000 Triple Quadrupole GC/MS, Maintenance Manual

Page: 103 / 214

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 ).
WA R N I N G
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.
C A U T I O N
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.
C A U T I O N
Always wear clean gloves to prevent contamination when working in the analyzer
chamber.
C A U T I O N
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.