18
English
5.905-945.0 Rev. 00 (06/15)
The device is equipped with a control and monitoring elec-
tronic system that monitors a number of functions.
In case of a continuous operation or a continuous break of
30 minutes, the immediate switch-off and locking of the de-
vice takes place.
Moreover, a visual signal is issued via the operating dis-
play (LED).
Both functions can be deactivated by means of the DIP
switch (see circuit diagram).
The system checks the device for leaks by monitoring the
pressure switch. If the pressure switch opens twice within
2 seconds and this recurs 10 times within 10 minutes, the
immediate switch-off and locking of the device takes place.
Moreover, a visual signal is issued via the operating dis-
play (LED).
This function can be deactivated by means of the DIP
switch (see circuit diagram).
If one phase fails, in case of excessive temperature, low
voltage or in case of a voltage difference between 2 phas-
es > 50 V, the immediate switch-off and locking of the de-
vice takes place.
Moreover, a visual signal is issued via the operating dis-
play (LED).
The excess temperature may occur due to the following
reasons:
–
Over or low voltage
–
Overload
–
Poor motor cooling (water shortage or high tempera-
ture of the cooling water)
Operating display:
Error message:
6.7
Electronics system
6.7.1
Pump monitoring
6.7.2
Leakage monitoring
6.7.3
Motor protection
6.7.4
Display
LED illuminates
green
Operation in order
LED blinks green
Disconnection from the mains (time-
out)
LED is red
Contactor or pressure switch not in
order
LED blinks red once Leak
LED blinks red twice Winding protection contact was trig-
gered
LED blinks red three
times
Power supply
LED blinks red four
times
Power consumption is too high
End motor blockade
