hajdu AQ STA200C, Инструкции по использованию

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10
EN
OPERATION AND MAINTENANCE
If water leakage from the interior of the water tank or any other abnormality is detected,
please, switch off the water tank from the electric and pipeline systems immediately with
the help of the closing valve and the main switch.
Storing and combined safety valve
In order to ensure safe operation, it is rational to turn to a plumber to check the appliance
and the correct operation of the combined safety valve every now and then (in every year).
Furthermore, it is recommended to blow off the valve every month or every second month
through turning the blow off button of the safety valve in the direction indicated by the
arrow. This way, the valve seat is cleaned from any possible pollution (scale, sand grains,
etc.)
IN CASE OF INDIRECT HEATING, OVERHEATING PROTECTION MUST BE
PERFORMED BY THE INDIRECT HEATING EQUIPMENT!
Active anode
Besides enamel coverage, the hot water tank is protected by anode against corrosion, so it
is essential that the tank always possesses an active anode of adequate size. Therefore the
state of the active anode must be checked every second year by a contracted service shop.
This is also a condition for extra warranty related to the tank (see the commercial
warranty). If the diameter of the anode shrinks to appr. 10 mm, it has to be replaced.
It is extremely important that the active anode has good contact with the tank. Therefore, in
case of mounting a new anode or performing any other repair work, the connection of the
active anode and the earthing screw has to be performed in a way that the electric
connection must drive electricity well.
Scale removal
Depending on the quality of the water, scale deposition may occur on the heater or on the
tank. The scale deposited on the heater increases the probability of heater failure, so it has
to be cleaned from scale in every second year. It is strictly forbidden to apply any sharp
metal object or acid to remove scale deposited on the heat exchanger, the close cover and
its fittings. Please use cleaning and scale removal supplies available in commerce. Scale
can be removed from the interior part of the tank manually, through the fitting opening. It
is rationale to flush the tank with water ray after scale removal.
Frost prevention
If temperature may fall below the freezing point in the location of the hot water tank, the
heating of the tank must not be switched off or the tank must be discharged in periods of
frost danger.
Water drainage
HOT WATER MAY OUTFLOW DURING WATER DRAINAGE!
Water drainage can be performed through turning the drainage valve (tap) mounted in front
of the hot water tank or through the combined safety valve (in the direction indicated by
the arrow). Before water drainage, the valve closing pipeline connection and the cold water
faucet have to be closed, while the hot water faucet has to be kept opened during water
drainage. Re-filling of the tank should be performed according to instructions described
earlier.