SECTION 3 - SERVICING
and CONVERSION
Important
BEFORE ATTEMPTING ANY SERVICING, TURN
OFF ISOLATING COCK AND TAKE STEPS TO
ENSURE THAT IT CANNOT BE INADVERTANTLY
TURNED ON.
AFTER ANY MAINTENANCE TASK, CHECK THE
APPLIANCE TO ENSURE THAT IT PERFORMS
CORRECTLY AND CARRY OUT ANY NECESSARY
ADJUSTMENTS AS DETAILED IN SECTION 1.
After carrying out any servicing or exchange of gas
carrying components -
ALWAYS CHECK FOR GAS TIGHTNESS!
3.1 CONVERSION PROCEDURE CHECK LIST
Fo r co nversio n to NATURAL GAS, add co rrect
governor and set burner pressure.
For conversion to PROPANE GAS, remove governor
from gas circuit.
Other considerations:
CHANGE INJECTORS
ADJUST BYPASS SCREW TO LOW RATE
ADJUST BURNER AERATION
CHANGE DATA PLATE
On completion, re-apply any seals and locking nuts.
3.2 REMOVAL OF CONTROL PANEL
Proceed as follows:
Remove spillage tray.
Pull off gas control knob.
Undo fixings in upper flange of facia panel and allow
panel to drop down. Withdraw panel sufficiently to
enable spark igniter leads tobe disconnected at rear
before removal.
Note
When re-fitting spark electrode terminal, ensure it is
turned away from manual ignition hole in bulkhead.
3.3 BURNERS
Burners should be cleaned periodically to maintain
maximum performance.
3.3.1 Main Burner
Togain access toburner, remove griddle plate.
Remove burner by lifting it slightly at rear.
Carefully move it back to clear injector. Injectors
may alsobe remo
ved at this stage if required.
Refer toSection 3.4.
Clean burner with a wire brush. Ports may be cleared
with a suitable metal broach, shaking debris clear,
or if possible blowing it away with compressed air.
When replacing burner, ensure that rear locating pins
are properly located.
Check flame cone lengths in accordance with
Section 1.10.1.
Replace all parts in reverse order and check for gas
tightness.
3.3.2 Pilot Assembly
To remove, proceed as follows:
a) Remove griddle plate, burner and facia panel as
previously described.
b) Release thermocouple fixing nut and remove
thermocouple from assembly.
c) Release pilot pipe fixing nut from pilot assembly.
Take care not to lose injector removed with nut.
d) Undofixings which secure pilot assembly and
remove with electrode and ignition lead.
Replace spark electrode if required and re-assemble
in reverse order.
3.4 INJECTORS
3.4.1 Main Injector
Lift off griddle plate and remove burner as detailed
above. Injectors may now be unscrewed.
Soak it in a suitable solvent to remove any debris and
wipe with a soft cloth. Do not use metal objects to
clear injector hole.
Check face-to-face seals are clean before re-fitting.
3.5 THERMOCOUPLE
To remove, proceed as follows:
a) Remove griddle plate, burners and control panel as
detailed in the relevant sections of this document.
b) Undo tubing nuts at both pilot end and gas control.
c) Manoeuvre thermocouple clear.
When fitting a new thermocouple, coil excess in a
similar manner to original. Take care not to bed tubing
toless than a 12mm radius.
3.6 PIEZO IGNITER/SPARK ELECTRODE
3.6.1 Piezo Igniter
To remove, proceed as follows:
a) Remove facia panel.
b) Pull off igniter lead and, from inside, remove nut
which secures igniter tofacia panel.
Replace parts in reverse order and check that pilot
ignites from spark. Refer to User Instructions for
lighting procedure.
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