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26
TESTING
Checking the Function of the Regulator
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:
1. When all burners of the appliance are operating
at maximum,
2. 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 OPERATION OF THE GAS COOKER
Testing appliance operation
(Apparatus: manometer and connecting tube)
After installation, test the appliance and ensure that it
operates correctly, before handing it over to the customer.
The following procedure is recommended:
• Check that the manometer zero point is correct; then
connect the manometer to the appliance pressure test
point. This is located on the Regulator or L.P.G. Inlet
Fitting behind the kick panel (or under the Storage
Drawer where fitted).
• Turn on the gas supply and electricity (if applicable)
and attempt ignition. (For correct procedure, refer to the
Ignition Instructions.) Note that additional time needs
to be allowed for the initial lighting as air has to be
purged from the pipes.
• Check the operating pressure for the particular
gas-type, as given in the Table on page 23.
For L.P.G. appliances, the regulator in question may be
remote from the appliance.
For Natural Gas appliances
Regulators are supplied pre-adjusted and configured by the
component maker for use with Natural Gas. The appliance
installer is not required to make an adjustment to obtain the
correct outlet pressure setting.
An arrow on the base of the regulator indicates the direction
of gas flow when the inlet and outlet of the regulator are
orientated correctly. When the regulator has been fitted
check for leaks from the connections with soapy water.
WMAN_540 Upright_Jun11.indd 26 28/06/11 12:07 PM