64
BG 805 981 BE (0201) QMG422.oi
If you are unable to remedy a fault or if you are not allowed to do so due to the lack
of skilled personnel, please contact the responsible service location.
If you need advice or if you want to return the equipment for repair, please supply a
comprehensive description of the error together with:
•
Description of fault, e.g. hard copies, recorder charts and text
•
Application conditions and operating modes under which the error occurs
•
In case of sporadic errors all observations that could help to reproduce the error
•
Type, series, software and firmware numbers of all components involved.
Products that have been exposed to vacuum conditions must always be
accompanied by a completed declaration of contamination (
→
69).
8 Maintenance
The QMS 422 and QMI 422 have lateral ventilation inlets. Their filters are to be
cleaned before the air circulation becomes obstructed. The cleaning interval
depends on the local dust evolution. Dry dust can easily be removed with the aid of
a vacuum cleaner.
Skilled personnel
If necessary remove the filters and wash them in a mild soap solution. Dry them
well before you reinstall them!
Defective filters should be replaced (
→
65).
The installed fans should be checked semi-annually. Replace them if they are not
running smoothly or are overly noisy.
Dusty circuit boards can be cleaned with compressed air (max. 2 bar). Make sure
that no components get damaged or bent.
Moisture (condensation) in the EP 422 can lead to unstable behavior (offset
fluctuations). Open the EP 422 and dry it with a hair dryer (max. 60 °C).
Refer to the maintenance instructions in all the user’s guides of the components
that form part of the system. See list of literature on
68.
9 Decommissioning
Please contact your Pfeiffer Vacuum service location on instructions of how to
dispose of your system.
7.6 Service interventions