Ariston ABS ANDRIS2 R 10 O Instructions For Installation, Use, Maintenance page 13

EN
MAINTENANCE REGULATIONS (for qualified personnel)
Before calling your Technical Servicing Centre, check that the fault is not due to lack of water or power failure.
Caution: disconnect the appliance from the mains before conducting any maintenance work.
Emptying the appliance
The appliance must be emptied if it is to be left unused for a long period and/or in premises subject to frost.
To drain the appliance, proceed as follows:
- close the tap, if installed (D Fig. 1), otherwise the central tap domestic power supply;
- turn on the hot water tap (wash basin or bathtub);
- open the drain valve B (Fig. 1).
Replacing parts
Remove the cover to access the electrical parts.
Access the thermostat by disconnecting the power cable and lamp cables, then remove it from its seat.
Before handling the heating element and anode, empty the appliance.
Undo the 4 bolts (A fig. 4) and remove the flange. The heating element and anode are attached to the flange.
During reassembly, make sure that the flange gasket, the thermostat and the heating element are put back in
their original positions.
We recommend replacing the flange gasket (Z Fig. 5) every time it is disassembled.
Use only original parts from authorized service centres authorized by the manufacturer.
Periodical maintenance
The heating element (R fig. 5) should be descaled every two years (the frequency must be increased, if water
is very hard) to ensure it works properly. If you do not wish to use a liquid descaler (in this case please read the
safety data sheets of descaling), 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, otherwise the decay
of the warranty. In the presence of aggressive or waters rich in chloride it is recommended to check the status
of the anode annually.
To remove this, disassemble the heating element and unscrew from the support bracket.
Bipolar safety device
If the water overheats excessively, a safety circuit breaker (compliant with applicable national regulations)
trips to cut off electricity to the heating element (both power supply phases); contact the Service Centre if this
occurs.
USER INSTRUCTIONS
Operation and Regulation of the operating temperature
On/Off
To the heater turn on and off use the external two-pole switch, do not turn on and off introducing or removing
the power cord plug in/from the electrical power.
The indicator light remains ON during heating.
Adjusting the operating temperature
For the models with knob, temperature adjustment can be done using it (as in the drawing instructions).
PLEASE NOTE During the stage of the first temperature adjustment it is necessary to apply light pressure
rotating the knob to remove the seal that blocks the thermostat to the maximum energy efficiency temperature.
For models without knob, temperature adjustment can only be done by qualified personnel.
Anti-freeze function
Set the knob to the symbol (only for models fitted with this function).
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