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ウォーターヒーター Ariston 500 STD ProTechのPDF 設置、サービス、操作に関する説明書をオンラインで閲覧またはダウンロードできます。Ariston 500 STD ProTech 34 ページ。 Unvented hot water storage cylinders

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MAINTENANCE

To ensure efficient and safe operation, and to maintain the warranty, it is

necessary to ensure the appliance is serviced annually by a competent

person.

Before servicing, preliminary electrical system checks must be carried out to

ensure electrical safety (i.e. polarity, earth continuity, resistance to earth and

short circuit).

5.1

ProTech

Anti-corrosion System

WARNING: SWITCH OFF THE POWER SUPPLY BEFORE WORKING ON

THE APPLIANCE.

Trouble-shooting:

1) The green L.E.D. is NOT on:

- Check to see that the circuits electric plug is connected (if not,

connect);

- Check to see that the P.C.B, is supplied with electricity (if not, replace

the supply cable);

- Check to see that 230 V electricity is supplied (if not, ensure that 230 V

is supplied);

- If all these checks fail to locate the problem, replace the electronic

circuit (installer).

2) The red L.E.D. is on:

- Check to see that the tank is filled with water (if not, fill it before

carrying out the following checks);

- Check to see that the clip-on circuit connector is in the proper position

(if not, position correctly);

- Check to see that the electrodes connection lead is property connected

(to check this, gently pull on it) (if not, replace the electrode);

- Check to see that the connection lead to the tank is properly connected

to the tank (if not, connect properly);.

- Check to see thait the two leads from the clip-on circuit connector are

not damaged, stripped, etc. (if so, replace the electrode);

- If all these checks fail to locate the problem, replace the electronic

circuit.

Note: To replace the RC.B, there is no need to drain the cylinder;

1) Disconnect the two supply cables from the P.C.B. to the supply terminal;

2) Disconnect the clip-on circuit connector and polarising slot which

connects the circuit to the tank and the electrode;

3) Disconnect the P.C.B. from its supporting plate (plastic clips in the 4

corners) and;

4) Replace the defective circuit with a new one, then re-install in reverse

order to the above.

5.2

Thermal Cut-out(s)

If the thermal cut-out has operated the cause must be found before resetting

(see section 6).

5.3

Immersion Heater(s)

Should the immersion heater(s) become scaled, we would recommend that

the immersion heaters be replaced, a scale reducer be fitted on the cold

water supply to the cylinder and that the thermostat is set below 60°C to

prevent further scale formation.

5.4

Unvented Controls

Check controls as per the following:

1) Line strainer - with the water supply turned off remove screen from

strainer and clean off any debris;

2) Expansion vessel - with the water supply turned off and taps open, check

expansion vessel pressure and top up as necessary;

3) Temperature & pressure relief valve - with the water supply turned on,

check manually by lifting the test lever/turning the test knob (ensure valve