Westinghouse WFE904SC, Руководство пользователя

Страница: 55 / 60

55
TESTING THE OPERATION OF THE GAS COOKER
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.