Ariston C00520 Mode D'emploi page 20

EN
Startup and commissioning
Before powering up the appliance, fill the heater with mains water.
To do so, open the mains cock and the hot water tap until all the air has been vented from the boiler. Check for leaks
from the flanges, tighten down the fittings (not too much!) if necessary (A fig. 4).
Power the appliance by actuating the switch.
MAINTENANCE REGULATIONS (for competent person)
CAUTION Observe all general warnings and safety standards listed at the
!
beginning of this text in full; all such instructions are obligatory.
Maintenance work may only be done by qualified technicians (in possession of the regulatory requisites).
Before requesting for the Technical Assistance to intervene for a suspected fault, check that this is not caused by a
temporary lack of water supply or power failure.
Draining the appliance
Make sure to drain the appliance when it is out of service or in an area subject to subzero temperatures.
To drain the appliance, proceed as follows:
- permanently disconnect it from its power supply;
- close the cock, if present (D fig. 1), or the main domestic water system cock;
- open the hot water tap (sink or bath tub);
- open cock (B fig. 1).
Replacing parts
Disconnect the appliance from its power supply.
Remove the enclosure to access the electrical equipment.
Actuate the electronic thermostat (T fig.6) by disconnecting the power cable (C fig.6) and the cable (Y fig.6) of the
control panel. Then remove it from its housing while taking care not to bend the sensor holder rod excessively (K fig.6).
Intervene on the control panel (W fig.6) by disconnecting the cable (Y fig.6) and removing the screws.
To work on the heating element and anode, first drain the appliance.
Use only original spare parts
Scheduled maintenance
The heating element (R fig. 5) should be descaled every two years to ensure it works properly.
If you do not wish to use a liquid descaler, you can simply break off the deposit, taking care not to damage the heating
element's cladding.
The magnesium anode (N fig. 5) must be replaced every two years (this does not apply to appliances with stainless
steel boilers); however, the anode should be checked every year if the water is corrosive or chloride rich. To replace
it, remove the heating element and unscrew it from its bracket.
After routine or extraordinary maintenance, we recommend filling its tank with water and draining it completely
so as to remove any residual impurities.
Use only original spare parts supplied by the manufacturer's authorised service centres, otherwise the.
Reactivating the two-pole cutout
If the water overheats excessively, a thermal cutout (CEI-EN compliant) trips to cut the electrical power supply to the
heating element (both phases); contact the Service Centre if this occurs.
Overpressure safety device
Regularly check that the overpressure device is not jammed or damaged; if it is, remove any scale or replace it.
If the device has a lever or knob, operate it to:
- drain the appliance, if necessary
- check its operation from time to time.
USER INSTRUCTIONS
CAUTION Observe all general warnings and safety standards listed at the
!
beginning of this text in full; all such instructions are obligatory.
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