SERVICING / MAINTENANCE - OPALIS 5

Diagram 11

4

65

1

97

1- Pilot tube 2- Temperature selector

3

3- Pilot injector 4- Upper pilot injector

8

5- Fastening tube/burner support screw 6- Blockage safety tube 7- Thermocouple solenoid 8- Pilot earth screw 9- Brass tube mechanism/pilot connection

2

Des 060 To ensure the continued efficient and safeoperation of the water heater, it is recommended that it is checked and serviced annually. lift pilot until pilot tube ( 1 ) slips out of brass tube( 9 ), then pull forward away from heater until scoopsupport stirrup is free Proceed as follows : brush interior of scoop with soft brush clean upper pilot injector ( 4 ) by immersing ex-tremity of scoop in 15 % acetic acid solution Heat exchanger descaling If the heater is installed in a hard water area and a drop in water flow rate is noticed and/or noise occurs, the heat exchanger may need descaling. clean lower part of tube by blowing through unscrew brass tube ( 9 ) and blow through up-per part clean lower pilot injector ( 3 ) by brushing lightlyand blowing through shut off water supply remove heat exchanger and fill with a 15 % in-hibited acid solution 1 ) : refit parts in reverse order to removal. NB : the making safe of the appliance by theblockage safety device involves cleaning or re- placing the element. leave to act for 10 to 15 minutes then rinse thor-oughly Cleaning of blockage safety device Cleaning of pilot "paragraph), check that there is no obstruction in Ø8 hole in element pipe. The tube and its cradle having been taken out (see dismantling procedure in " If necessary, repeat operation. Cleaning of pilot An obstruction, even partial, of the pilot is identifi- able by a change in the appearance of the small flame visible at the top of the pilot tube. During normal functioning, this flame has the ap- pearance of a very steady, small blue cone ; when the pilot is fouled, this flame becomes feebler or takes on a yellow colour. To clean the pilot ( turn off appliance pull back selector control lever ( 2 ) and unscrewplastic nut unscrew, but do not remove, screw ( 5 ) securingblockage safety tube ( 6 ) separate tube ( 6 ) from heat exchanger andremove from cradle, rotating from the back to the front remove screw ( 5 ) and thermocouple nut. Re-move thermocouple remove pilot earth screw ( 8 )

14