Ariston 250I Petunjuk Pemasangan, Penggunaan, Pemeliharaan - Halaman 24

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ROUTINE MAINTENANCE

Partial obstruction of the evaporator filter causes a reduction in prod-

uct performance. We therefore recommend cleaning the filter to re-

move any dust or obstructions at least once a year.

The filter can be extracted using the appropriate clip above the cas-

ings. Clean the filter with water and mild soap. Verify that the external

terminal of the air exhaust duct, and the duct itself, are not obstruct-

ed or have not deteriorated. Ensure that the condensate water runs

out in a suitable drain and make sure the discharge is made without

hindrance.

- Check and clean ducting and grills.

Verify that the external terminal of the air exhaust duct, and the

duct itself, are not obstructed or have not deteriorated.

- Ensure that the condensate water runs out in a suitable drain and

make sure the discharge is made without hindrance.

- Check operation of the electric heater element.

- Check anode every year and replace as required depending on

its deterioration (see paragraph "Removing & replacing electric

heater element")

- Inspect the inside of the cylinder (see paragraph Internal Cylinder

Inspection)

- With the water supply turned off remove the strainer from the com-

bination valve and clean off any debris and rinse in water.

- Expansion vessel: with the water supply turned off and taps open,

check the expansion vessel pressure and top us as necessary.

- Cylinder TPRV: check its operation with the supply water on, turn

the TPRV test knob and check water discharges to tundish, ensure

the valve closes after testing.

- Combination valve PRV: check its operation with the supply water

on, turn the PRV test knob and check water discharges to tundish,

ensure the valve closes after testing.

- Discharge pipe (D1): open either TPRV or PRV gradually to pro-

duce a full bore discharge into bundish and D2 and check there is

no back pressure and that the water flows freely to drain.

- Pressure Reducing Valve (PRV): check that the correct outlet pres-

sure is being maintained by measuring the pressure at an in-line

terminal fitting e.g. a tap.

ROUTINE MAINTENANCE PERFORMED BY USERS

It is advisable to rinse out the appliance after each routine or extraor-

dinary maintenance intervention.

The pressure safety device must be operated regularly to verify that

it is not clogged and to remove any limescale deposits.

Check that the condensate drainage pipe is not obstructed.

WATER HEATER DISPOSAL

The appliance contains refrigerant gas which must not be released

into the atmosphere. In case of permanent decommissioning of the

water heater, ensure that disposal procedures are carried out by

qualified personnel only.

REMOVING & REPLACING ELECTRIC HEATER ELEMENT

In the event of the electric heater failing or to replace its anode, the

electric heater has to be removed from the Nuos Plus. Only replace

with Ariston spare parts.

CAUTION:

Removing flange screws (E) will release the stored water.

24 /EN

REMOVAL PROCEDURE FOR INSPECTION

Refer to picture below

1. Isolate mains electrical supply to the product by switching off and

removing fuse.

2. Unscrew 4 screws (A) and remove cover (B).

3. Disconnect wires and withdraw heating element (C).

4. Replace element and refit, ensure wires are connected correctly.

To descale flange (F) or to replace the magnesium anode the flange

(F) has to be removed by removing 6 bolts E, this requires draining

the cylinder (see paragraph Draining the appliance).

Internal Cylinder Inspection

To inspect the inside of the cylinder remove flange (F) by undoing 6

bolts (E), this requires draining the cylinder (see paragraph Draining

the appliance).

Water heater disposal

The appliance contains R134a-type refrigerant gas which must not be

released into the atmosphere. In case of permanent decommission-

ing of the water heater, ensure that disposal procedures are carried

out by qualified personnel only.

This product conforms to

WEEE Directive 2012/19/EU.

The barred bin symbol on the appliance and its packag-

ing indicates that the product must be scrapped separately

from other waste at the end of its service life. The user must

therefore hand the equipment over to a sorted waste disposal facility for

electro-technical and electronic equipment at the end of its service life.

Alternatively, the equipment may be returned to the retailer at the time of

purchase of a new equivalent type of appliance. Electronic equipment of

size less than 25 cm can be handed over to any electronics equipment

retailer whose sales area is at least 400 m2 for disposal free of charge

and without any obligation to purchase new product.

Sorted waste collection for recycling, treatment and environmentally

compatible scrapping contributes to the prevention of damage to the

environment and promotes reuse/recycling. For more detailed informa-

tion on the collection systems available, contact the local waste disposal

service or the shop where the product was purchased.

The appliance is not provided with rechargeable batteries, but if you use

them they must be removed and put into a specific container before dis-

posing of the appliance. The batteries seat is behind the front frame.