Zanussi ZGF 642 manual Servicing, To Adjust the GAS Rate

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Servicing

Repais may only be carried out by CORGI registered engineers.

A: Removal Of Hob Top

1.Remove all control knobs, pan supports, burner caps and burner crowns.

2.Remove 2 screws for each burner.

3.Remove 4 fixing screws from the pan support hinges, and remove the hinges from the hob.

4.Lift hob top at the rear and remove it from the hob.

B:Removal Of the Hob Taps (Isolate Electrical Supply)

1.Follow the procedures in Section A.

2.Loosen the pipe connection nut from the gas tap with the aid of a 16mm spanner.

3.From the underside of the hob remove 2 self tapping screws from the tap.

4.Reassemble in reverse order and carry out leak test.

C:Removal Of Mains Terminal Block (Isolate Electric Supply)

1.Follow the procedures in Section A.

2.Disconnect supply flex connections from terminal block.

3.From the underside of the hob remove 1 self tapping screw from the terminal block.

4.Reassemble in reverse order.

D:Removal Of Burner

1.Follow the procedures in Section A.

2.With the aid a 12mm spanner loosen off the pipe connection nut.

3.From the underside of the hob remove 1 self tapping screw from the burner body.

4.Reassemble in reverse order and carry out leak test.

E:Removal of Ignitor

(Isolate Electrical Supply)

1.Follow the procedures in Section A.

2.Remove H.T. leads from the ignitor by pulling tab connection off. Disconnect supply cable from the ignitor unit.

3.With the aid of a pair of thin nose pliers, pull the spring clip sideward off of the underside of the ignitor

4.Reassemble in reverse order.

F:Removal of Ignitor Switch (Isolate Electric Supply)

1.Follow the procedures in Section A.

2.Disconnect the switches connector from the ignitor unit and remove the supply cables pulling the tabs connection off.

3.Reassemble in reverse order and check with wiring diagram for correct reconnection.

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.

Method

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, which is located down the centre of the gas tap control shaft.

Upon completion stick the replacement rating plate on the under side of the hob.

IMPORTANT

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

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Contents GAS HOB Model ZGF Service Important Safety InformationChild Safety During UseContents Description of the Hob InstallationWhen the HOB is First Installed Hob TopBurner Minimum Maximum OperationHOB Burners DiameterPan Supports Maintenance and CleaningHobTop BurnersSymptom Solution Something Not Working?Peace of Mind for 24 Months Service and Spare PartsZanussi Guarantee Conditions Customer CareOverall Dimensions Instructions for the InstallerEngineer technical data CUT OUT DimensionsImportant safety requirements LocationGas Connection InstallationDimensions are given in mm Cut Out SizeBuilding Fitting the Hob into the worktopElectrical connections This HOB Must be EarthedWiring Diagram Taps Ignitor Switches Ignitor UnitFault Finding Preliminary Electrical Systems CheckEarth Continuity Check Ignition System / Gas Ignition Procedure Pressure TestingCommissioning To Adjust the GAS Rate Servicing