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Austria Email EWH serie Seite 32

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EKH-S, EWH Id. Nr.: 248735-6
INSPECTION, MAINTENANCE, SERVICE
a) During heating, the expansion water must drip visibly from the drain of the safety valve. The expansion water
quantity is approx. 3.5% of the tank’s rated volume when fully heated (approx. 80 °C).
The function of the safety valve must be checked regularly. The water must ow freely from the safety valve unit
into the drain funnel when the safety valve test knob is lifted or turned to the “Test” position.
Caution: the cold water supply and parts of the storage tank connector ttings may become hot thereby.
If the water heater is not heated up or hot water is withdrawn, no water must drip from the safety valve. If this is
the case, then either the water line pressure is too high (install pressure reducing valve over 5.5 bar) or the safety
valve defect. Please call a plumbing expert immediately!
b) The boiler scale as well as the furring forming in the internal boiler of the tank must be removed by an expert
after one to two years of operation in the case of heavily calciferous water.
Cleaning is performed through the ange opening. De-install heating ange, clean tank; a new seal must be
used in any case when the heating ange is mounted. The internal tank of the water heater with special ena-
melling must not get in contact with boiler scale solvents – do not use an anti-liming pump. Remove lime
deposits with wood and aspirate or wipe out using a cloth.
Then rinse the device thoroughly (in accordance with ÖNORM H5195-1) and observe the heating process in
the same way as during rst commissioning.
c) In order to ensure a corrosion protection and be entitled to any claims for warranty, as provided on the side
of the manufacturer, the installed magnesium anode requires checking by an expert at intervals of 2 years of
operation (EKH-S 5 years). The guard circuit shunt resistor below the heating unit fastening screw must not be
damaged or removed during maintenance works.
d) Do not use any abrasive cleaning agents and paint thinners (such as nitro, trichlor etc.) to clean the device.
The best cleaning method is to use a damp cloth added with a few drops of a liquid household cleaner. In hos-
pitals and other public buildings, the prevailing regulations for cleaning and disinfection must be observed.
During maintenance works, it is advisable to open the cleaning and service ange in order to check the tank for
any possible washing-in of foreign objects and contaminations, and to remove these if necessary.
MALFUNCTIONS
If the tank water is not heated, please check whether the line circuit breaker (automatic safety cutout) or the safety
fuse in the distribution box have reacted, and check the setting of the temperature control.
In all other cases, do not attempt to rectify the fault yourself. Please contact either a licensed plumber or our custo-
mer service. In many cases it only needs a little manipulation by an expert and the tank is in order again. In case
of contact, please quote your model designation and manufacturing number, which you can nd on the rating
plate of your electric tank.
RECYCLING AND DISPOSAL
• Always dispose of materials according to environmental, recycling and waste management standards.
• All appliances, wearing parts, defective components and environmentally hazardous liquids and oils must be
disposed of or recycled according to applicable waste disposal regulations without harming the environment.
They must not be disposed of as household waste.
• Dispose of packaging made of cardboard, recyclable plastics and synthetic ller materials in an en-vironmen-
tally responsible manner through appropriate recycling systems or at a recycling centre.
• Please observe the applicable national and local regulations.
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