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page 22 of 129
Prevent the backpressure of gases and the backflow of
condensates at the outlet.
Check the liquid level in the catchpots or in the collecting
flask regularly and drain condensate in time to prevent
overfilling. Install a level sensor (see "Accessories", pg.
92) for monitoring, if necessary.
Provide appropriate protective measures to allow for the
possibility of failure and malfunction. The protective mea-
sures must also allow for the requirements of the respec-
tive application.
In case of overload, the motor is shut down by a self-hold
thermal cutout in the winding.
Note: Only manual reset is possible. Press the START/
STOP key at the controller to confirm the error message.
Switch off the pump and disconnect from the power source.
Identify and eliminate the cause of failure. Wait approx.
five minutes before restarting the pump.
Maintenance and repair
In order to comply with laws (occupational, health and
NOTICE
safety regulations, safety at work law and regulations for
environmental protection) vacuum pumps, components
and measuring instruments can only be returned when
certain procedures (see section "Notes on return to the
factory", pg. 122) are followed.
Take advantage of our service seminars, which put special
focus on the maintenance and repair of vacuum pumps.
For details and for the online "Instructions for repair" man-
ual see www.vacuubrand.com.
In case of normal wear, the lifetime of the diaphragms and
valves is > 10000 operating hours. Bearings have a typi-
cal durability of 40000 h.
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