a small stable flame results. Turn the knob to maximum
and then back to minimum to ensure that the correct
minimum flame is maintained.
10. Attach the LPG sticker to the cooker, near the gas supply
inlet. Cover the Natural Gas label that is factory fitted.
Hex nut assembly,
fully screwed down
Hex nut assembly,
removed from
regulator and insert
disassembled
Insert oriented for
Natural Gas operation
Insert oriented for
LPG operation
LpG CONvERSION – IMpORTANT (MODEL 635 ONLY)
This appliance is fitted with Natural Gas burner injectors.
Please follow the procedure below if a conversion to suit
UNIVERSAL LPG is required.
The conversion kit contains 5 injectors and 1 LPG sticker.
1. Remove the hotplate burners to access the hotplate
injectors. Replace the factory fitted NG injectors with the
appropriate injectors, as supplied (see table on this page).
2. Unscrew the hex nut from the regulator. The hex nut, brass
washer and nylon insert will disengage as an assembly.
3. Unclip the nylon insert from the nut assembly by rotating
the insert 1/4 turn, and pulling it free.
4. Turn over the insert, and clip back into position.
5. Refit the hex nut assembly to the regulator ensuring that
it is fully screwed down. The regulator is now set for
connection to LPG.
6. Turn on the gas supply and at each new connection check
for leaks using soapy water: each hotplate valve should
be turned on, one at a time, and the injector hole blanked
off for several seconds.
7. The operation of the regulator can be confirmed by
connecting a manometer to the pressure test point located
on the side of the regulator body adjacent to the outlet.
With the appliance operating check the outlet pressure
• when all burners of the appliance are operating at
maximum,
• when the smallest burner of the appliance is operating
at minimum.
Under these conditions the outlet pressure should not vary
from the nominal outlet pressure of 2.60kPa by more than
±0.52kPa.
8. If the regulator appears to not be performing satisfactorily
then check the following points.
• If the outlet pressure is consistently too low then the inlet
pressure may be too low and adjustment of an upstream
regulator may be needed, or an upstream regulator or
valve with insufficient flow capacity may be present in
the gas supply line. If this is suspected then it may be
necessary to repeat the checks whilst measuring both
the inlet and outlet pressure to determine if the inlet
pressure is in the range 2.75 – 7.00kPa.
• Check that the insert has been fitted correctly.
• Check that the turret screw is fully screwed down.
• Check that the regulator has been fitted to the gas
supply line in the correct orientation, the arrow on the
base of the body indicates the direction of gas flow.
Once these checks have been completed, if the regulator
still fails to perform in a satisfactory manner it should be
replaced.
9. One by one, turn the knobs to minimum and screw in the
bypass screw (accessible when the knob is removed) until
