Testing The Operation Of The Gas Cooker - Baumatic BU54EE User Manual

Installing the gas cooker
Operation on Natural Gas
NOTE: When connecting to natural gas the NG Regulator is fitted after removing the small semi-pierced cover piece
on the back panel below the gas inlet pipe, by pulling the corner piercing with a pair of pliers'
Read these points about operation on NG/SNG and look carefully at the diagram:
• The appliance regulator provided must be orientated to give access the manometer test point.
• The arrow showing the direction of the flow must be facing the correct way from gas source into the cooker.
• The regulator has a 1/2"BSP internal thread at inlet and outlet
NG Regulator
Pressure Test Point
Operation on Universal LPG
NOTE: When connecting to LPG / ULPG, the burners and gas control valves need to be modified, using the gas
conversion kit supplied. Also the ULPG sticker must be fixed in lieu of the NG sticker'
An inlet fitting with pressure test point is provided. The inlet fitting has 1/2" BSP internal thread for both inlet and outlet.
The inlet fitting must be orientated so that the pressure test point is accessible.
LPG Adapter
When the installation is complete, always check that all the unions are absolutely tight using a soapy solution.
Never use a flame to make this check.
28 Baumatic 540mm Upright Cooker INSTALLING THE GAS COOKER

Testing the operation of the gas cooker

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.
Checking gas supply
• Check the manometer zero point is correct.
• Connect the manometer to the cooker pressure test
point. This is located on the NG regulator or LPG
inlet fitting.
• Turn on the gas supply and the electricity (if
applicable) 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.
• Check the operating pressure for the particular gas
Test Point
type (see table).
For LPG cookers
NOTE: refer to separate gas conversion instruction.
Adjust or replace the regulator on the gas bottle if
necessary (this may be remote from the cooker).
For Natural Gas cookers
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.
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 of 1.0kPa by more
than ±20% of the nominal outlet pressure (±0.20kPa for
Natural Gas).
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
1.13 – 5kPa.
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.
Final Checking
Observe the flame appearance on each burner. If it is
much smaller or larger than expected, then the injector
size needs checking.
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:
• 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.
• Check the ignition on all burners both separately
and in combination.
• Check the operation of the electrical components, if
applicable.
• 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.
Baumatic 540mm Upright Cooker TESTING THE OPERATION OF THE GAS COOKER 29