Becker DT 4.6 Translation Of The Operating Instructions page 24

24 | DT 4.2, DT 4.4, DT 4.6, DT 4.8
The pump does not reach the required performance and / or emits disturbing noises
Cause
The motor runs in the wrong direction of rotation if the
pump does not prime correctly and emits loud noise.
Foreign bodies sucked into the pump, stuck bearings or
other components
Fan damaged or clogged
Temperature of the evacuated gas is too high
Incorrect motor connection
Table 7.1: Fault table 5
The pump does not start
Cause
Pump mechanically blocked, e.g. by foreign bodies in
the compressor chamber.
Power consumption too high
Electrical supply cross-section too small
Residual current (Only when using an additional residual
current circuit breaker)
Pump mechanically blocked, e.g. foreign body in
compressor chamber
Table 7.1: Fault table 6
The pump becomes unusually hot
Cause
Intake filter clogged
Ambient temperature of the pump is too high
Media line damaged
Media pressure too low
Table 7.1: Fault table 7
The motor installation must be checked by a qualified
electrician and corrected if necessary.
If components have to be dismantled to remove foreign
bodies, Becker Service must be notified. Likewise, only
original spare parts may be used to replace damaged or
worn components.
Heavy contamination can cause the fan to no longer
rotate correctly and thus the pump no longer cools
sufficiently. The pump must be shut down safely or
disconnected from the power supply by a qualified
electrician. The fan guard must be removed and the fan
wheel must be cleaned of dirt or replaced if damaged.
The intake temperature of the gas to be evacuated has
been limited by the manufacturer to the maximum
temperature shown in
parameters#. This temperature limit must be observed.
The motor installation must be checked by a qualified
electrician and corrected if necessary.
Have the power consumption checked by a qualified
electrician. Do not switch on the pump again until the
work has been completed and the fault has been
rectified.
Have the pre-fuse checked by a qualified electrician. Do
not switch on the pump again until the work has been
completed and the fault has been rectified.
Have possible sources of error checked by a qualified
electrician. Do not switch the pump on again until the
work has been completed and the fault has been
rectified.
Have possible sources of error checked by a qualified
electrician. Do not switch the pump on again until the
work has been completed and the fault has been
rectified.
Contact Becker Service
The pump must be shut down safely or disconnected
from the power supply by a qualified electrician. The
suction filter must be cleaned and replaced if necessary.
Sufficient ventilation as well as compliance with the
minimum distances must be checked and ensured
The machine must not be switched on again until it has
been checked by a specialist. Replace the media line.
The machine must not be switched on again until it has
been checked by a qualified person.
chapter #Kap. operating