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Id. no.: 242440-7
INSPECTION, MAINTENANCE, SERVICING
a) During heating-up excess water must be seen to drip out of the safety valve outlet (in the case of
non-pressure connections the excess water will drip out of the mixer unit valve). When fully heated up
(approx. 75 °C), the excess water volume is approx. 3.5% of the storage tank volume.
The function of the safety valve should be checked regularly. When lifting or turning the safety valve
testing knob to the "Test" position the water must flow unhindered out of the body of the safety valve
and into the drainage funnel.
Warning: the cold water inlet plumbing and parts of the storage tank connection fittings can be-
come hot as a result.
If the water heater is not heated up or if no hot water is extracted, then no water should drip out of the
safety valve. If this is the case then either the water feed pressure is too high (install via 5.5 bar pressure
reduction valve) or the safety valve is defective. Please called the installation expert immediately!
b) In the case of extremely hard water, the boiler scale accumulating in the storage tank's inner boiler as
well as the freely deposited lime-scale must be removed by a professional after one or two years of
operation.
Cleaning is carried out by removing the flange opening of the heating flange and cleaning the storage
tank. When re-installing the heating flange it is crucial to use a new seal. The specially enamelled inner
container of the water heater must not come into contact with boiler scale solvent - do not use the
de-calcifying pump. Remove limescale with a wooden instrument and then take out with a vacuum
cleaner, or wipe it out with a cloth.
The device must then be thoroughly rinsed (in accordance with ÖNORM H5195) and the heating up
process is to be observed as per initial commissioning.
c) In order to make substantiated claims under the guarantee provided, the in-built protective anode re-
quires an inspection by an expert at maximum intervals of 2 years of operation. The protective current
resistor below the heating element fixing screw must not be damaged or removed during servicing.
d) Do not use any scouring agents to clean the device and do not use any paint thinners (such as Nitro,
trichloride, etc.)
It is best to clean it using a damp cloth with a few drops of a liquid household cleaning agent. In hospi-
tals and other public buildings, it is essential to comply with the prevailing regulations for cleaning and
disinfection.
For service work, it is also appropriate to open the cleaning and service flange, in order to check the tank
for the possible ingress of foreign bodies and impurities and to remove them if necessary.
MALFUNCTIONS
If the storage tank water does not heat up please check whether the circuit breaker (automatic circuit
breaker) in the distribution cabinet or the safety fuse have been tripped and check the setting of the tem-
perature regulator.
In any other instances do not attempt to rectify the fault yourself. Either contact a licensed installer or our
Customer Service department for assistance (Austria-wide). Professionals often only need to make a few
quick adjustments to return the storage tank to full working order. Please provide the type designation
and serial number of your storage tank when reporting the issue, which you will find on the rating plate.
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