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Some parts are vulnerable to damage from electrostatic discharge
The wires, contacts, and cables connected to the analyzer components can
carry electrostatic discharges (ESD) to the electronics boards to which they
are connected. This is especially true of the mass filter (quadrupole) contact
wires which can conduct ESD to sensitive components on the side board.
ESD damage may not cause immediate failure but will gradually degrade
performance and stability. See the material on page 100 for more informa-
tion.
& $ 8 7 , 2 1
Electrostatic discharges to analyzer components are conducted to the side board where
they can damage sensitive components. Wear a grounded anti-static wrist strap
(see page 100) and take other anti-static precautions EHIRUH you open the vacuum manifold.
Some analyzer parts should not be disturbed
The mass filter (quadrupole) requires no periodic maintenance. In general,
the mass filter should never be disturbed. In the event of extreme contam-
ination, it can be cleaned, but such cleaning should only be done by a trained
Hewlett-Packard service representative.
& $ 8 7 , 2 1
Incorrect handling or cleaning of the mass filter can damage it and have a serious, negative
effect on instrument performance.
More information is available
If you need more information about the locations or functions of analyzer
components, refer to Chapter 7, Analyzer, on page 215.
Most of the procedures in this chapter are illustrated with video clips in the
HP 5973 MSD Reference Collection CD-ROM.
Maintaining the MSD
4
To lubricate the vent valve O-ring
145
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