John Lewis JLBIGH601 Commissioning, Conversion from Natural Gas to LPG, To adjust the gas rate

Models: JLBIGH601

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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.

Procedure:

￿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

Remove left hand pan support and front left burner

Minimum adjustment screw

￿ 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.

Conversion from 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

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.

To 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.

Procedure: IMPORTANT

The replacement/conversion of the gas hob should only be undertaken by a competent person.

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John Lewis JLBIGH601 Commissioning, Conversion from Natural Gas to LPG, To adjust the gas rate, Procedure