14
SERVICING / MAINTENANCE - OPALIS 5
●
lift pilot until pilot tube (
1
) slips out of brass tube
(
9
), then pull forward away from heater until scoop
support stirrup is free
●
brush interior of scoop with soft brush
●
clean upper pilot injector (
4
) by immersing ex-
tremity of scoop in 15 % acetic acid solution
●
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 lightly
and blowing through
●
refit parts in reverse order to removal.
Cleaning of blockage safety device
The tube and its cradle having been taken out
(see dismantling procedure in "
Cleaning of pilot
"
paragraph), check that there is no obstruction in
Ø 8 hole in element pipe.
NB :
the making safe of the appliance by the
blockage safety device involves cleaning or re-
placing the element.
Diagram 11
6
5
4
1
3
2
9
7
8
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.
Proceed as follows :
●
shut off water supply
●
remove heat exchanger and fill with a 15 % in-
hibited acid solution
●
leave to act for 10 to 15 minutes then rinse thor-
oughly
●
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 (
1
) :
●
turn off appliance
●
pull back selector control lever (
2
) and unscrew
plastic nut
●
unscrew, but do not remove, screw (
5
) securing
blockage safety tube (
6
)
●
separate tube (
6
) from heat exchanger and
remove from cradle, rotating from the back to the
front
●
remove screw (
5
) and thermocouple nut. Re-
move thermocouple
●
remove pilot earth screw (
8
)
To ensure the continued efficient and safe
operation of the water heater, it is recommended
that it is checked and serviced annually.
1 -
Pilot tube
2 -
Temperature selector
3 -
Pilot injector
4 -
Upper pilot injector
5 -
Fastening tube/burner support screw
6 -
Blockage safety tube
7 -
Thermocouple solenoid
8 -
Pilot earth screw
9 -
Brass tube mechanism/pilot connection
Des 060
Содержание OPALIS 5
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