Operating instructions

4. Spark Electrode
a. Remove burner assembly as detailed in Servicing
Schedule.
b. Remove HT spark lead from spark electrode.
c. Remove spark electrode.
d. Replace with new spark electrode taking care not
to put any strain on the ceramic body replace
screw to secure position.
e. Reconnect the HT spark lead.
f. Reassemble burner assembly into cooker.
5. Pilot Assembly
a. Remove burner assembly as detailed in Servicing
Schedule.
b. Remove HT spark lead from spark electrode.
c. Remove thermocouple from pilot burner.
d. Slacken pilot feed pipe nut.
e. Remove the pilot burner fixing screw.
f. Release the pilot feed pipe and unscrew the pilot
burner injector.
g. Examine/clean or renew the injector before
replacing it in the new pilot burner.
h. Re-assemble the injector into the pilot burner
assembly.
i. Enter the pilot feed pipe nut into the pilot burner
and turn by hand a few times.
j. Replace the pilot burner on to its support bracket
and tighten the screws.
k. Tighten the pilot feed pipe nut fully with a spanner.
l. Replace thermocouple.
m. Replace spark electrode taking care as detailed
in (4) above.
n. Replace HT spark lead.
o. Reassemble burner assembly into cooker.
6. Thermostat
a. Ensure that the cooker is ISOLATED FROM
THE POWER SUPPLY.
b. Remove thermostat control knob by grasping
firmly and pulling off the spindle.
c. Remove the four fixing screws which secure the
thermostat mounting plate to the cooker side plate.
d. Remove the earth lead and note position of
electrical connection and remove.
e. Unscrew the locknut and washer securing the
thermostat.
f. Open top oven door.
g. Slacken the rear screw securing the LH side
panel casting in the oven.
h. Remove the front screw from the LH side panel,
which allows it to swing out and give access to
the thermostat phial mounting brackets.
i. Pull the capillary out of the tube along the front of
the cooker sufficiently to enable the phial to be
removed from its clips (push the phial towards the
rear of the oven to release it from the front bracket).
j. The thermostat can now be removed.
k. Straighten an equivalent length of capillary on the
new thermostat taking care when doing so not to
kink it.
l. Feed the capillary back through the front tube into
the oven and relocate the capillary in the support
brackets.
m. Draw the spare capillary back towards the left of
the cooker and carefully coil the spare capillary
behind the thermostat.
n. Now reverse the order of the above to
reassemble (h-b).
7. Gas Valve
a. Remove burner assembly as detailed in Servicing
Schedule.
b. Remove thermocouple from S.I.T. valve.
c. Remove HT spark lead from Piezo.
d. Remove pilot feed pipe from gas valve.
e. Remove main burner feed pipe from outlet of
solenoid.
f. Unscrew the two fixing bolts holding gas valve to
its mounting plate.
g. Remove Piezo complete with its mounting
bracket from gas valve.
h. Remove inlet gas assembly complete.
i. Remove solenoid valve from gas valve.
j. Fit new gas valve reassembling in reverse order.
8. Solenoid
a. Remove burner assembly as detailed in
‘Servicing’ above.
b. Remove thermocouple from S.I.T. valve.
c. Remove HT spark lead from Piezo.
d. Remove pilot feed pipe from gas valve.
e. Remove main burner feed pipe from outlet of
solenoid.
f. Unscrew the two fixing bolts holding gas valve to
its mounting plate.
g. Remove Piezo complete with its mounting
bracket from gas valve.
h. Remove inlet gas assembly complete.
i. Remove solenoid valve from gas valve.
j. Fit new solenoid reassembling in reverse order.
9. Combustion Discharge Safety Device
a. Disconnect from mains electricity.
b. Remove thermostat knob.
c. Remove screw securing control panel.
d. Ease control panel away from cooker and allow panel
to hang on wires.
e. Remove spindle locknut and electric leads from
CDSD.
f. Remove CDSD phial from spring clip in downdraught
diverter hood. Fig. 4.
g. Withdraw CDSD and fit replacement in reverse order.
LEAVE SERVICING INSTRUCTIONS WITH THE USER
FOR FUTURE USE.
9