Ariston AS 150 Wartungshandbuch PDF herunterladen (Seite 5)

FAULT POSSIBLE CAUSES REMEDY

1) Mains Cold Water Check and open Isolating

supply shut off and/or Stop Valve. Check

water, Local Water Authority

NO HOT WATER 2) Line Strainer Turn off mains water supply,

FLOW blocked remove Line Strainer and

clean

3) Cold Water Check direction of flow

Combination valve arrows on valve, refit in

fitted incorrectly correct position if necessary

1) Low Mains Water Check pressure, consult

Pressure Local Water Authority if

necessary

REDUCED FLOW 2) Line Strainer Turn off mains water supply,

RATE partially blocked remove Line Strainer and

clean

3) Size of Service Increase to size stated on

Pipe too small page 4

1) Direct Immersion Check Immersion Heater,

Heater is not switch on if necessary

switched on

2) Direct Thermal Test Thermostat operation

Cut-Out has and wiring, if faulty,

operated correct/replace. Reset Cut-Out

WATER FROM 3) Boiler Programmer Check switch on Domestic

HOT TAPS set to Central Hot Water if necessary

IS COLD Heating only

(Indirect models)

4) Boiler is not Check boiler operation, if

functioning fault suspected consult

(Indirect models) Manufacturer's Instructions

5) Indirect Thermal Test Thermostat operation

Cut-Out has and wiring, if faulty,

operated correct/replace. Reset

Cut-Out

6) Motorised valve Check wiring and operation of

jammed or not Motorised Valve correct/

wired correctly replace as necessary

(Indirect models)

DISCHARGE FROM 1) Pressure above 7 Shut down boiler or immersion

PRESSURE/ bar, failure of heater. Check pressure

TEMPERATURE Pressure Reducing Reducing Valve and Thermal

RELIEF VALVE Valve. Temperature Controls. Replace if

above 90 C failure necessary

of thermal control

DISCHARGE FROM 1) Continually. Check pressure from valve.

EXPANSION Pressure Reducing Replace if over 3.5 bar

VALVE Valve faulty

When heater is heating Check charge of vessel. Re-

Faulty Expansion charge vessel to 3.5 bar or

Vessel or lost charge replace if necessary

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FAULT FINDING

3) Close taps in turn after having purged the system of air.

4) Check for leaks around the controls and Immersion Heaters and again after the unit has heated up.

5) Check that no water is passing to waste through the relief valves.

6) Test the operation of the Temperature & Pressure Relief and Expansion Valves by lifting/turning the manually operated

test lever/cap and observing that water flows through freely and safely to waste.

7) Check that the discharge pipe is plumbed so that it falls continuously and that no taps, valves or other shut off devices

are installed in the pipe.

8) Check that all thermostats are set at 60°C.

9) DIRECT UNITS. Switch on Immersion Heater(s) and allow unit to heat up. Check operation of Thermostat(s).

10) INDIRECT UNITS. Fill the indirect (primary) circuit following the boiler instructions. Switch on the boiler, ensure that the

programmer is to Domestic Hot Water. Allow unit to heat up and check operation of indirect thermostat on motorised

valve(s).

11) Demonstrate operation to user, including operation of Temperature & Pressure Relief Valve and what to do if it

operates.

12) Give this book to the user to retain for future reference and make the customer aware that periodic checks of the

equipment are essential for safety.

MAINTENANCE

No longer than every 12 months, the installer should check the Magnesium Anti-corrosion Anodes (consult the label on the

face of the unit for the correct location). Assessment of the condition of the bottom anode can be made by judging the

condition of the top anode.

If the heating element is heavily coated with scale we recommend descaling at the time of this inspection. The Expansion

Vessel may need to be recharged periodically by your installer.

WARNING :

SWITCH OFF THE POWER SUPPLY BEFORE WORKING ON THE APPLIANCE.

If the Thermal Cut-Out has operated the cause must be found before resetting.

Removal of top & bottom Anodes;

1) Close the mains supply service valve.

2) Open hot water taps.

3) Attach a hose and open the drain cock and allow the cylinder to empty.

4) The anodes are removed by unscrewed using an Allen key.

EXAMINE THE ANODES AND REPLACE IF THE DIAMETER IS LESS THAN 10mm.

The use of P.T.F.E. sealing tape is recommended to ensure watertight connection for Anodes.

Descale the Immersion Heater(s) and remove any lime deposit from the cylinder. Replace in reverse order. THIS DOES

NOT APPLY TO COMFORT MODELS.

Check controls as per the following:-

1) Check and clean the Line Strainer before refilling the system.

2) Check pressure in Expansion Vessel and top up as necessary.

3) Check manually by lifting the test lever, the Temperature & Pressure Relief Valve.

4) Check manually by turning the test knob the Expansion Relief Valve.

5) Check discharge pipes from both Temperature & Pressure Relief and Expansion Relief Valve for obstructions.

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