7
FAULT
Opening of the devices and replacement of parts subject to water pressure must
only be performed by licensed persons to ensure the safety and leak-tightness of
the devices.
Fault tips:
Indication on the dis-
play
Störung
Dosierung
8
MAINTENANCE
8.1
CLEANING
To clean the housing use only clear drinking water.
Standard all purpose cleaners and glass cleaners can contain up to 25 % solvent or alcohol (methylated
spirits).
These substances can chemically attack the plastic parts resulting in embrittlement and even breakage.
Therefore do not use these types of cleaner!
Cause
Motor or motor actuation defec-
tive.
Remedy
Reset fault message:
Press <OK> key
or
Pull the power supply unit out of the socket
and plug back in after about 5 s.
If a fault occurs again:
Unplug the power supply unit.
If fitted, switch the bypass valve to bypass.
Notify customer service.
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