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Revision 3/F3601
6.5.6 OVEN PILOT ADJUSTMENT
6.5.7 OVEN THERMOSTAT CALIBRATION
Burner pressure
test point
Figure 6.5.8
4) If the pressure is incorrect, then adjust the
minimum flow rate adjuster screw, located
at the left hand bottom corner at the front
of the gas control.
Figure 6.5.9
5) Paint seal the adjustment screw.
Minimum flow
adjustment screw
NOTE:
The pilot flame adjusting screw
should always be fully open and is factory
set and sealed in this position.
1) Remove control panel (refer 6.2.1).
2) Light pilot burner.
3) To increase the pilot flame, turn pilot
adjustment screw anti-clockwise.
To decrease the pilot flame turn pilot
adjustment screw clockwise.
NOTE:
The correct setting is achieved by
fully screwing in the adjustment screw,
and then unscrewing three full turns.
Figure 6.5.10
Pilot
adjustment
screw
NOTE:
As the thermostat control has special
fasteners, a Torx T20 security tip or
screwdriver is required. These are readily
available from a tool retailer.
1) Place an accurate thermometer or
thermocouple in the centre of the oven.
2) Light burner and set the thermostat knob
to gas mark 4.
3) Wait for the oven temperature to stabilise
(approximately 20 minutes). Oven centre
temperature should be 190°C ± 10°C.
NOTE:
Should a problem exist, the following
checks should be made before assuming
the thermostatic control calibration is
faulty.
a. Check burner pressure.
b. Check the MAXIMUM flow adjustment
setting on control valve (refer 6.5.4).
c. Check the MINIMUM flow adjustment
setting on control valve (refer 6.5.5).
d. Check the pilot burner rate adjustment
(refer 6.5.6).
4) Remove the cap (A) by prying off with a
small flat blade tip screwdriver.
5) With the control knob (C) in the off position
and while holding it in, undo the Torx head
screw (B).
6) Pull the control knob (C) straight off taking
care not to rotate it at all while extracting.
Ensure the spring (D) is not lost.
7) Put a mark on the gear (E) for future
reference to rotation of gear.
8) Carefully rotate the gear (E) for
adjustment.
One tooth rotation equals a temperature
change of 5ºC.
Anticlockwise to decrease temperature.
9) Replace the knob, ensuring spring is in
position and taking care not to rotate the
knob while inserting, hold fully in.
Gas Mark 1
2
3
4
5
6
7
Temp °C 100 130 160 190 225 260 290
