Rangemaster 90 Gas - Manual (Page 29)

29
If in doubt contact, your supplier.
Screw the threaded end of the hose into the gas inlet in
the underside of the connector block on the back of the
cooker.
After completing the gas connection, check the cooker
is gas sound with a pressure test.
Pressure testing
The gas pressure can be measured at one of the LH
hotplate burner injectors. Lift off a burner head. Fit the
pressure gauge to the injector. Turn on the hotplate
burner and turn on and light one of the other hotplate
burners.
For Natural Gas cookers the pressure should be
20mbar.
For LP Gas cookers the pressure should be 29mbar
for Butane
37mbar for Propane.
Reassemble burner top, making sure it is reassembled
in the correct way on the burner body.
Electrical Connection
WARNING: THIS COOKER MUST BE EARTHED.
All external wiring must comply with the IEE Regulations
for the Electrical Equipment of Buildings. Connection
to the electrical supply can be made with either a plug
and socket or be permanently wired via a double pole
switch. The cooker is supplied with a 3 core cable 2m
long. If a replacement cable is fi tted it must be 250v
high temperature PVC (85°C), 1mm2. Should the plug
not fi t the socket in your home, it should be removed
and replaced with a suitable plug. Note: If a plug is fi tted
which is not suitable, it must be cut off and disposed of
properly. To avoid the risk of electrocution, the plug must
not be left where children might fi nd it and plug it into a
supply socket.
Three pin plugs to BS1363 with a capacity of not less
than 13A must be used and fi tted with a 13 amp fuse
‘ASTA’ approved to BS 1362.
After replacing the fuse the cover must be refi tted.
If the cover is lost, the plug must not be used until
a replacement cover has been obtained from your
supplier. The colour of the correct fuse carrier is that of
the coloured insert in the base of the fuse recess, or
stated elsewhere on the plug. Always state this colour
when ordering a replacement fuse carrier.
IMPORTANT The wires in the mains lead are coloured
in accordance with the following code:-
GREEN AND YELLOW: EARTH
BLUE: NEUTRAL
BROWN: LIVE
The wires should be connected into the terminal of
your plug as shown:
Electrical checks
EARTH CONTINUITY CHECK
The cooker must be disconnected from the power
supply. Set your meter to (ohm) on the X1 scale and
adjust to zero if necessary.
Test the leads from any of the cooker’s earth points
(e.g. inside electric box cover) - to the earth pin on the
cooker’s plug - resistance should be less than 1 (ohm).
If it is not, check all the earth wires for continuity. Check
that all contacts are clean and tight. Re-check. If the
resistance is still greater than 1 (ohm) there may be a
problem, consult a qualifi ed electrical engineer.
POLARITY CHECK
The cooker must be connected to the power supply. Your
meter should be set on 300V ac scale.
Test at the cooker terminal block:
1. Test leads from L to N. Your meter should read
approx. 220-240V ac.
2. Test leads from L to E. Your meter should read
approx. 220-240V ac.
3. Test leads from N to E. Your meter should read
approx. 0-15V ac.
If the readings are different from these values there is
an electrical fault. Rectify any fault and repeat the test. If
necessary repeat the test at the supply system socket/
spur - if the fault also occurs at this stage then there is
a house system fault which requires attention by the
Electrical Authority.
The customer should be warned NOT to use the
appliance until this examination has been carried out.
Grill check
Open the grill compartment door.
Natural gas models
Press in the grill knob, turn to the large fl ame symbol
( ) and press the igniter button or light with a match.
LP gas models
LP gas models have an FSD with stops the fl ow of gas
to the grill if the fl ame goes out. Turn the knob to the
large fl ame symbol ( ). Press in the grill knob. This
lets gas through to the burner. Keep holding the knob
pressed in and press the igniter button or light with a
match. Keep holding the button for about 10 seconds
If when you let go of the control knob the burner goes
out, the safety device has not held in. Turn off the grill
and wait one minute then try again this time holding in
the button for slightly longer.
Hotplate check
Check each burner in turn. Push in each knob and turn
it to the large fl ame symbol. Press the ignition button,
release the button when the burner lights.