It is recommended that the range be serviced at regular annual intervals.
Arrange with the householder that the range has been turned OFF the night before to ensure it
is cold upon arrival.
The appliance and its individual shut-off valve must be disconnected from the gas supply piping
system during any pressure testing of that system at test pressure in excess of 1/2 psig (3.5kPa).
This appliance must be isolated from the gas supply piping system by closing its manual shut-
off valve during any pressure testing of the gas supply piping system at test pressure equal to or
less than 1/2 psig (3.5kPa).
1. Isolate the gas supply by turning off the service gas valve beneath the combination gas
valve. Break the hexagon union connection nut. (See Fig. 7).
2. Detach inner burner fixing screws (See Fig. 7) and draw complete gas burner assembly
clear of the combustion chamber resting it on the floor in front of the range.
NOTE: THERE IS SUFFICIENT LENGTH OF THERMOSTAT CAPILLARY TUBE
WITHOUT DETACHING THE SENSING END FROM THE TOP OF THE ROASTING
OVEN.
3. Remove the boiling plate, combustion chamber baffle and simmering plate.
4. Check conditions of flueways and combustion chamber and clean if necessary.
5. Lightly brush the perforated top of the gas burner and check that the burner venturi is free
of lint and fluff.
NOTE: IT MAY BE NECESSARY TO DETACH THE PILOT ASSEMBLY AND REMOVE
THE BURNER TO ENSURE IT IS FREE.
6. Check the condition of the pilot thermocouple tip to ensure it is clean and free of carbon.
Heavy heat oxidised tips should mean the removal of the thermocouple and a new
replacement. Examine and brush clean the pilot light parts and examine the ignitor cable
and connector strip to ensure the PTFE insulation cable, remains intact and strip is firmly
connected to the spark electrode. Clean any carbon away from the electrode.
7. Refit combustion burner chamber baffle.
8. Refit gas burner assembly in reverse manner described in 2 and reconnect gas supply at
service gas valve union. On completion test the gas installation for soundness and purge.
Leak testing of the appliance shall be conducted according to manufacturers instructions.
NOTE: USE SOAPY WATER SOLUTION ON NEW GAS CONNECTIONS TO ENSURE
THERE ARE NO GAS LEAKS.
9. Turn on the gas supply and follow the procedure for lighting the burner.
10. Ensure that the pilot and main burner flames are burning evenly, the thermocouple is
enveloped by the pilot flame.
11. Visually check main burner and pilot flame for correct flame pattern. An established main
burner at high fire will be predominantly blue with yellow tippings on an even height flame
strip and be about 150mm (6in) high. See Fig. 6. Ensure all flameports have cross-lit and
that the pilot light flame is free from sooting.
12. The maximum depth of any cabinets installed above the top cooking surface of the range
must not exceed 330mm (13in).
INSTALLER SERVICING INSTRUCTIONS - GC3 (THREE OVEN)
YEARLY SERVICE
11