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Regulating the minimum flame
After lighting the burners, turn the control knob to the minimum setting and then re-
move the knob (this can easily be removed by apply a gentle pressure).
Using a small «Terminal» type screwdriver the regulating screw can be adjusted as in
Fig. 8. Turning the screw clockwise reduces the gas flow, whilst turning it anticlockwise
increases the flow – Use this adjustment to obtain a flame of approximately 3 to 4 mm
in length and then replace the control knob.
If GPL (cylinder) gas is being used, turn the screw clockwise right to the end of the
travel of the by-pass.
Screws regulating
(for differend models)
6
REGULATING THE BURNERS
Flame Combustion
For maximum efficiency from the burners, the correct combustion of the flame is necessary.
A good flame must be well aligned and without yellow tips (Fig. 7/B). If there is insufficient
air the flame will be uneven with yellow tips (Fig. 7/A). If there is too much air, the flame
will be very short and bright (Fig. 7/C). In these cases the combustion must be adjusted by
re-fitting the carburation tube to the Venturi (where there is insufficient air) or removing the
carburation tube (in the case of too much air). To position the carburation tube, the fixing
screws must be loosened, and retightened when the satisfactory combustion is obtained.
Standard regulation values are stated in fig. 6 and following table.
Fig. 6 Fig. 7
Type of
burner
Medium
Large
Quota «X» depending on type of gas
Butane G 30 Propane G 31 Methane G 20
5 mm 7 mm 2 mm
2 mm 5 mm 4 mm
BURNER CAP
BURNER
AIR REGULATION
SCREW
FIXING
SCREW
Fig. 8
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