Lpg Conversion Gas Cooktop; Testing The Operation Of The Gas Cooker - Westinghouse WFE9515SD User Manual

LPG CONVERSION GAS COOKTOP

A conversion kit is included with the product for
Universal LPG usage. The conversion kit contains 5 or
7 injectors (refer to LPG conversion table) and 1 LPG
sticker.
Please follow the procedure below if a conversion to suit
UNIVERSAL LPG is required:
1. Remove the hotplate trivets, burner caps and burner
crowns to access the hotplate injectors. Replace the
factory fitted injectors with the appropriate injectors,
as supplied. Refer to injector orifice table for injector
sizes. The injector size is stamped on the side of
the injector.
2. Unscrew the top hat nut from the regulator. The top hat
nut and control pressure spring assembly will disengage
as an assembly.
3. Unscrew the threaded pin from top hat.
4. Upturn threaded pin, so spring is free and screw pin
back into the top hat until firm.
5. Refit the top hat 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 a small stable flame results.
Turn the knob to maximum and then back to
minimum to ensure that the correct minimum
flame is maintained.
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LpG coNVERSIoN GAS cooktop
10. Attach the LPG sticker to the cooker, near the gas
supply inlet. Cover the Natural Gas label that is
factory fitted.
A B
Turn top hat
nut anti-
clockwise
and remove
Top hat nut assembly, fully
screwed down
c D
Configuration for
Natural Gas
E f
Configuration for LPG
G h
Bypass screw
Flame size adjusted
to maximum
Reposition
Flame size adjusted
Control knob shaft
to minimum
NOTE: You MUST test the cooker after installation,
before you hand it over to the customer. You MUST have
a manometer and a connecting tube.

TESTING THE OPERATION OF THE GAS COOKER

Checking gas supply
1. Check the manometer zero point is correct.
2. Connect the manometer to the cooker pressure
test point. This is located on the regulator or LPG inlet
fitting.
3. Turn on the gas supply and the electricity and try to
ignite the gas.
NOTE: It will take additional time to light the gas for the
first time as air needs to be purged from the pipes.
4. Check the operating pressure for the particular
gas type.
Checking the function of the regulator
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 by more than
±20% of the nominal outlet pressure (ie ±0.20kPa for
Natural Gas).
If the regulator appears to not be performing
satisfactorily then check the following points.
1. 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 1.13 – 5kPa.
2. 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.
Testing the cooker features
• Observe the flame appearance on each burner. If it
is much smaller or larger than expected, then the
injector size needs checking.
NOTE: When flame is unsatisfactory, then refer to the
Electrolux Technical Publications and correct the fault,
if possible.
When maximum flame appearance is correct, then check
the turn-down setting on each burner. If the settings
appear to be incorrect, proceed as follows:
1. Adjust the bypass screw mounted on the body of
each hotplate control cock. This is accessible when
the control knob and the control panel are removed.
2. Check the ignition on all burners both separately and
in combination.
3. Check the operation of the electrical components,
if applicable.
4. If you are satisfied that the cooker is operating
correctly, then turn it off and show the customer how
to use it. Make sure you ask the customer to operate
the clock and controls.
NOTE: If the cooker cannot be adjusted to perform
correctly, then inform the customer of the problem
and put a warning notice on the cooker. If the problem
is dangerous, then disconnect the cooker. If there is a
fault, then the customer should be advised to contact
the manufacturer's local service organisation or
the retailer.
tEStING thE opERAtIoN of thE GAS cookER
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