hajdu Z150S ErP Montage- Und Gebrauchsanleitung Seite 24

EN
clean the valve seat of any possible sand deposit, preventing its adhesion. The
leakage of the valve while in operation is a functional phenomenon. If the leakage
does not stop when the heating is switched off, have the appliance checked by a
technician. In such cases, you are advised to request the annual inspection of the
product, if it is due anyway.
8.2. Discharging of water from the container
When discharging water, hot water may leave the appliance.
After disconnecting the container, the discharging of water can be performed via
the outlet by turning the blow-off knob of the combined safety valve in the
direction indicated by the arrow. Before discharging water, close the closing valve
of the water network, and the cold water tap, but leave the hot water tap open
throughout the time of discharging.
8.3. Descaling/cleaning
After removing the service cover, it is recommended to perform reassembling
using a new sealing. When cleaning, avoid damaging the protective surface finish.
Perform mechanical cleaning only; no other cleaning or disinfection is needed.
Descaling is considered to be part of the maintenance, and it does not belong to
the activities covered by guarantee. However, due to the necessity of disconnecting
the circuit, putting back into operation must be performed by an authorised service
station (along with the review of the electrical connections).
8.4. Temperature regulator and limiter (integrated)
The temperature of the water in at ZxxxS ErP can be continuously set from 10 to
75 ºC using the rotary knob. The temperature of the water in contact with the tank
may not exceed 80 °C. You can set the regulator to zero by turning the knob
clockwise until it stops.
You can increase the desired temperature by turning the knob counterclockwise.
Figure 10.2.3, page 17
Upon failure of the regulator, the limiter protects the hot water tank from harmful
overheating. The limiter MUST BE RESET BY A PROFESSIONAL after resolving the
cause of the overheating.
8.5. Radiator
Its replacement requires the disconnection of the power supply; such replacement
requires the disconnection of the electrical circuit. The replacement of the ceramic
heating element (radiator with pocket tube) requires the discharge of water from
the container and the removal of the service cover. For this design, the radiator is
inserted in an enamelled steel pocket tube protected from outside impacts,
whereby the heating element has not direct contact with water. Due to this design,
there is no failure due to scaling, the anode has a longer expected service life than
in conventional pipe radiator designs. We absolutely recommend this design for
regions where water is hard. THE REPAIR MUST BE PERFORMED BY A
PROFESSIONAL
ATTENTION!
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