Stovax (P)8143**UC, (P)8120**UC, (P)8136**UC, (P)8144**UC, (P)8135**UC manual Piezo, ODS Pilot Unit

SERVICING INSTRUCTIONS

REPLACING PARTS

2.5replace with a new ignition lead following the same route as the old one. replace the valve cover and securing screw.

2.6check the operation of the new ignition lead.

3.PIEZO

3.1The piezo unit used on this appliance is not serviceable and unlikely to fail. If a new piezo is required it will be necessary to change the gas valve, refer to section 7.

4.ODS PILOT UNIT

4.1Remove the fire, see section 1.

4.2Remove the pilot shield and place to one side. Gently pull the ignition lead off the electrode. See diagram 5.

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4.3Undo the thermocouple connection from the back of the gas valve and carefully pull the thermocouple clear of the pipework and valve. See diagram 6, arrow A.

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A

AR1114

4.4Undo the pilot pipe connection from the pilot unit, remove the 2 screws securing the pilot and remove the pilot assembly. See diagram 7.

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4.5Replace with a new pilot unit of the correct type (refer to short spares list) and re-assemble. Set the spark gap as shown in diagram 5, replace the appliance and check the pipework for gas soundness, especially the inlet connection and pilot pipe connection.

4.6Carry out flame failure functional check as detailed in the flow chart paying particular attention to the mag drop out time.

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