John Lewis JLBIGH601 - Manual (Page 10)

10
Commissioning Commissioning Commissioning Commissioning Commissioning
When the hob has been fully installed it will be necessary to
check the minimum flame setting. To do this, follow the pro-
cedure below.
Turn the gas tap to the MAX position and ignite.
Set the gas tap to the MIN flame position then turn the
control knob from MIN to MAX several times. If the flame
is unstable or is extinguished follow the procedure below.
Pr Pr Pr Pr Procedur ocedur ocedur ocedur ocedure: e: e: e: e:
Re-ignite the burner and set to MIN.
Remove the control knob.
To adjust, use a thin bladed screwdriver and turn
the adjustment screw (see diagram) until the flame
is steady and does not extinguish, when the knob
is turned from MIN to MAX. Repeat this proce-
dure for all burners.
Pressure Testing Pressure Testing Pressure Testing Pressure Testing Pressure Testing
Remove left hand pan support and front left burner
cap and crown.
Fit manometer tube over the injector.
Turn on the burner gas supply and ignite another
burner.
The pressure reading should be nominally 20mbar
and must be between 17 mbar and 25mbar.
Turn off the burner supplies.
Minim Minim Minim Minim Minimum adjustment scr um adjustment scr um adjustment scr um adjustment scr um adjustment scre ee eew w w w w
Con Con Con Con Convvvvversion fr ersion fr ersion fr ersion fr ersion from Natural Gas to LPG om Natural Gas to LPG om Natural Gas to LPG om Natural Gas to LPG om Natural Gas to LPG
It is important to note that this model is designed for use
with natural gas but can be converted for use with butane
or propane gas providing the correct injectors are fitted. The
gas rate is adjusted to suit.
Proceed as follow Proceed as follow Proceed as follow Proceed as follow Proceed as follow
• Ensure that the gas taps are in the 'OFF' position
• Isolate the hob from the electrical supply
• Remove all pan supports, burner caps, rings, crowns and
control knobs.
• With the aid of a 7mm box spanner the burner injectors
can then be unscrewed and replaced by the appropriate
LPG injectors.
T T T T To adjust the gas rate o adjust the gas rate o adjust the gas rate o adjust the gas rate o adjust the gas rate
With the aid of a thin bladed screwdriver completely tighten
down the by pass adjustment screw. Upon completion stick
the replacement rating plate on the under side of the hob.
IMPORTANT IMPORTANT IMPORTANT IMPORTANT IMPORTANT
The r The r The r The r The replacement/con eplacement/con eplacement/con eplacement/con eplacement/convvvvversion of the gas hob should ersion of the gas hob should ersion of the gas hob should ersion of the gas hob should ersion of the gas hob should
onl onl onl onl only be under y be under y be under y be under y be undertak tak tak tak taken b en b en b en b en by a competent person. y a competent person. y a competent person. y a competent person. y a competent person.