Moffat G32M Service Manual

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G32MS CONVECTION OVEN

SERVICE MANUAL

Revision 4/F3590

APRIL, 2004

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Manual P/N MOMG32MS

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CONTENTS

This manual is designed to take a more in depth look at the G32M and G32MS convection ovens for the purpose of making the units more understandable to service people.

There are settings explained in this manual that should never require to be adjusted, but for completeness and those special cases where these settings are required to change, this manual gives a full explanation as to how, and what effects will result.

SECTION PAGE NO.

1. SPECIFICATIONS ........................................................................................................ 5

2. INSTALLATION............................................................................................................ 8

3. OPERATION ................................................................................................................. 11

3.1 Description of Controls

3.2 Explanation of Control System

4. MAINTENANCE ............................................................................................................ 15

4.1 Cleaning

4.2 Routine Procedures

5. TROUBLE SHOOTING GUIDE..................................................................................... 17

6. SERVICE PROCEDURES............................................................................................. 22

6.1 Fault Diagnosis

6.2 Access

6.3 Replacement

6.4 Adjustment / Calibration

7. CIRCUIT SCHEMATICS ............................................................................................... 43

7.1 220-240V (United Kingdom Only)

7.2 100-120V 60Hz (USA, Canada)

7.3 220-240V (Not United Kingdom)

8. ELECTRICAL WIRING DIAGRAMS ............................................................................. 46

8.1 220-240V (United Kingdom Only)

8.2 100-120V (USA, Canada)

8.3 220-240V (Not United Kingdom)

9. SPARE PARTS ............................................................................................................. 49

IMPORTANT: MAKING ALTERATIONS MAY VOID WARRANTIES AND APPROVALS.

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10. ACCESSORIES / OPTIONS ......................................................................................... 51

11. PARTS DIAGRAM........................................................................................................ 52

11.1 Main Assembly

11.2 Control Panel Assembly

11.3 Gas Assembly

11.4 Gear Plate Assembly

11.5 Door Assembly

12. SERVICE CONTACTS ................................................................................................. 63

APPENDIX A. Ignition Box Specifications ......................................................................... 65

APPENDIX B. Double Stacking Kit (Kits manufactured from March 2004)..................... 66

APPENDIX C. Double Stacking Kit (Kits manufactured before March 2004).................. 68

APPENDIX D. Motor Replacement Kit ................................................................................ 68

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MODEL: G32M

1. SPECIFICATIONS

(28")

28"

710

(28") (32")

GAS

MWS

510

(20")

350

(13¾")

205

MWS

GAS

(8")

810

900

(35½")

FRONT

(2")

SIDE

(2¾")

(3½")

MWS

GAS

PLAN

LEGEND

- Electrical connection entry point

- Water entry - ¾” BSP hose connection

- Gas connection entry point - ½” BSP female (not USA / Canada)

- ½” NPT female (USA / Canada only)

Dimensions shown in millimetres. Dimensions in inches shown in brackets.

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MODEL: G32MS

710

(28") (32")

GAS

MWS

510

(20")

350

(13¾")

205

MWS

GAS

(8")

(2")

FRONT

(2¾")

(3½")

MWS

810

SIDE

900

(35½")

GAS

PLAN

LEGEND

- Electrical connection entry point

- Water entry - ¾” BSP hose connection

- Gas connection entry point - ½” BSP female (not USA / Canada)

- ½” NPT female (USA / Canada only)

Dimensions shown in millimetres. Dimensions in inches shown in brackets.

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GAS SUPPLY REQUIREMENTS

Natural Gas LPG Natural Gas - UK Propane - UK (G20) (G31)

Input Rating 35 MJ/hr 35 MJ/hr 9.5 kW 9.5 kW (N.H.G.C.) (33,000 Btu/hr) (33,000 Btu/hr) (0.91 m³/hr) (0.67 kg/hr)

Injector Size Ø2.80 mm

(no. 35 drill size)

Supply Pressure 1.13 kPa 2.75 kPa 20 mbar 37 mbar (4½” w.c.) (11” w.c.)

Operating Pressure 0.85 kPa 2.25 kPa 10 mbar 35 mbar (3.5” w.c.) (9.0” w.c.)

Gas Connection ½” BSP Female ½” BSP Female

LOCATION

This oven must be installed in an area of adequate air supply. The following minimum clearances for air openings, servicing, operation and installation are to be adhered to:

Rear 75mm / 3” Left-hand side 75mm / 3” Right-hand side* 75mm / 3” Top 200mm / 8” (or 600mm from a combustible surface) Floor 127mm / 5”

* Fixed installations require at least 500mm

(20”) clearance at the right hand side for service accessibility.

OVEN INTERNAL DIMENSIONS

Width 468 mm / 18.5” Height 533 mm / 21” Depth 711 mm / 28” Oven Volume 0.18 m³ / 6.3 ft³

OVEN RACK SIZE

Width 460 mm / 18” Depth: 660 mm / 26”

ELECTRICAL SUPPLY SPECIFICATION OPTIONS

110-120 V AC, 60 Hz, 2.0 A, 1 Phase 220-240 V AC, 50 Hz, 0.7 A, 1 Phase 220-240 V AC, 60 Hz, 0.7 A, 1 Phase

½” NPT Female (USA/Canada only)

Ø1.80 mm

(no. 50 drill size)

ELECTRICAL PLUG SPECIFICATION REQUIREMENTS

Australia AS 2124, 10 Amp, 3 pin Canada NEMA 5-15, 15 Amp, 3 pin New Zealand AS 2124, 10 Amp, 3 pin United Kingdom BS 1363A 13A fused, 3 pin United States NEMA 5-15, 15 Amp, 3 pin Other Countries Type to meet country standards

WATER SUPPLY CONNECTION

Max Pressure 550 kPa / 5.5 bar / 80 psi Min Pressure 100 kPa / 1.0 bar / 15 psi

AUTOMATIC IGNITION CONTROL

110 Volt Models (24 Volt ignition system)

2 re-ignition attempts after burner ignition failure. 30 second purge time between ignition attempts. Lock-out condition after 3 ignition failures.

2 re-ignition attempts in the event of flame loss during burner operation. 30 second purge time between ignition attempts. Lockout condition after 2 re-ignition attempt failures.

220-240 Volt Models Lock-out condition after burner ignition failure. No re-ignition attempt.

1 re-ignition attempt in the event of flame loss during burner operation. Lock-out condition if re-ignition failure.

NOTE:

ignition control specifications.

Ø2.60 mm Ø1.55 mm

Refer to Appendix A for further

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2. INSTALLATION

WARNING: THIS APPLIANCE MUST BE GROUNDED.

WARNING: ALL INSTALLATION AND SERVICE REPAIR WORK MUST BE CARRIED OUT BY QUALIFIED PERSONS ONLY.

This appliance must be installed in accordance with National installation codes and in addition, in accordance with relevant National / Local codes covering gas and fire safety.

UNITED KINGDOM GAS SAFETY (Installation & Use)

- REGULATIONS 1984 Amendment 1990)

AUSTRALIA AS5601 / AG601 - 2000, Gas Installations

NEW ZEALAND NZS5261, Installation of Burning

Appliances and Equipment

UNITED STATES ANSI 223.1 (Latest edition) National Gas

Fuel Code

CANADA CAN/CGA -B149, Installation Codes for

Gas Burning Appliances and Equipment

Installations must be carried out by authorised persons only. Failure to install equipment to relevant codes and manufacturers specifications in this section will void warranty.

The oven and its individual shutoff valve must be disconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess of 0.5 psi (3.45 kPa / 34.5 mbar).

This oven must be electrically grounded in accordance with local codes.

Before Connection to the Power and Gas Supplies

• Remove all packing.

• Check equipment and parts for damage.

• Remove protective plastic coating from

• Check that the following parts have been

Report any damage immediately to the carrier and distributor.

the side panels.

supplied with your oven:

4 x Leg assembly 4 x Oven racks 1 x Water inlet elbow (c/w washer)

• Report any deficiencies to the distributor who supplied the oven.

• Fit the legs to the oven.

• Check that the available power and gas supply is correct to that shown on the rating plate located on the right -hand side panel.

Location

• This oven must be installed in an area of adequate air supply. To ensure correct ventilation for the motor and controls the following minimum installation clearances are to be adhered to:

Rear 75mm / 3” Left-hand side 75mm / 3” Right-hand side* 75mm / 3” Top 200mm / 8”

* Fixed installations require at least

500mm (20”) clearance at the right hand side for service accessibility.

• This oven must be fitted on supplied legs in all installations.

• Position the oven in its working position.

• Use a spirit level to ensure oven is level from side to side and front to back. (If this is not carried out, uneven cooking could occur). The legs used with bench/floor mounting or provided with stands are adjustable and will require adjusting in levelling the unit.

• The unit should be positioned such that the operating panel and oven shelves are easily reachable for loading and unloading.

• Adequate ventilation is essential. DO NOT obstruct the air flow around the ventilation slots.

IMPORTANT: THE OVEN VENT

LOCATED ON THE CABINET TOP MUST NEVER BE OBSTRUCTED.

Electrical Connection

This oven is fitted with an approved power supply cord via an electrical junction box at the right hand rear of the unit. Should

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changing of the cord be necessary then follow the instructions given below:

• Remove right hand side panel to allow access to the terminal block and strain relief cable clamp.

• The cable can be fitted through the small grommet and held by the cable clamp.

• Connect cable to the terminals as marked, then refit the cover panel.

L1 L2

Phase

RED

BROWN

BLACK

WARNING:

Neutral

BLACK

BLUE

WHITE

THIS APPLIANCE MUST

BE GROUNDED / EARTHED

Ground

GREEN

GREEN/YELLOW

Figure 2.1

Water Connection

• A cold water supply should be fitted to the water inlet (¾” BSP hose connection) which is located on the rear of the right hand side of the unit.

• Alternately, a connection elbow and sealing washer is supplied with this unit for direct connection of a ½” ID hose, and is recommended for easy installation and service.

• Connect water supply - Max inlet pressure 80psi / 550kPa.

• Turn on water supply to check for leaks.

IMPORTANT: MAXIMUM INLET WATER

PRESSURE IS 550 kPa / 80 psi.

Gas Connection

• A ½" BSP female elbow (½" N.P.T female - USA / Canada only) is provided at the bottom rear of the oven.

• A restraint chain anchor has been provided above the gas connection point for fitment of a restraint chain when a flexible gas line is fitted.

• It is important that adequately sized piping run directly to the connection joint on the oven with as few tees and elbows as possible to give maximum supply volume.

• A suitable jointing compound which resists the break down action of LPG must be used on every gas connection.

• Check all connections for leakages.

• Check appliance name plate on oven right hand side for correct orifice size and operating pressure for the gas being installed, before operation.

• The appliance combination gas valve is fitted with an internal regulator for adjusting the operating pressure. To access, remove appropriately marked side service panel from bottom right side of oven. Unscrew and remove regulator cap from gas valve. Adjust the regulator to achieve stated pressure.

NOTE:

Pressure test points are located

behind this side service panel also at bottom right side of oven.

IMPORTANT: ENSURE MANUAL ISOLATING VALVE LOCATED ON RIGHT HAND SIDE OF OVEN BEHIND GAS CONTROL SERVICE PANEL IS OPENED FOR OPERATION.

Before Use

• Operate the oven for about 1 hour at 200°C (400°F) to remove any fumes or odours which may be present.

Lighting Instructions

• Set the thermostat temperature.

• Automatic ignition will light the burner.

• If not, turn the thermostat off, and wait 5 minutes before relighting.

• The burner will cycle on/off to maintain the set temperature.

• Turn the thermostat off to shut-down the burner.

NOTE:

If the burner is not cycling to maintain temperature the ignition system has locked out. To reset turn the thermostat to the ‘off’ position. Wait 5 minutes before relighting.

110 Volt Models (24 Volt ignition system)

If the flame is lost during operation the ignition system will try three times to re-establish the flame with a 30 second delay between each

try, before going into lockout

220-240 Volt Models

If the flame is lost during operation the ignition system will try once to re-establish the flame, and will go into lock-out condition if there is a re-ignition failure.

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RATING PLATE LOCATION

Units manufactured from July 2002.

The rating plate for the G32M and G32MS convection ovens is located on the RH side front bottom corner.

Rating Plate

Figure 2.2

Units manufactured up to July 2002.

The rating plate for the G32M and G32MS convection ovens is located at the rear of the RH side panel.

Figure 2.3

Rating Plate

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3. OPERATION

NOTE: A full user’s operation manual is supplied with the product and can be used for further

referencing of installation, operation and service.

3.1 DESCRIPTION OF CONTROLS

1. Power

Depress to switch power on or off (switch

illuminates when power is on).

2. Thermostat

Temperature range 50 - 320°C (120 - 600°F). Indicator illuminates when the burner is

cycling ON to maintain set temperature.

3. Bake Timer

1 Hour bake timer. Indicator illuminates when “time up” (0)

reached, and buzzer sounds.

4. Roast ‘n’ Hold

Depress switch to activate ’Roast ’n’ Hold’

function. (Switch illuminates when ON).

5. Roast Timer

3 Hour roast timer. Indicator illuminates when “time up” (0)

reached. Product is held at 75°C (167°F).

6. Steam Switch

Push switch to activate water injection. (Water injects into oven while the button is

depressed).

7. Light Switch

Push switch to activate lights. (Lights illuminate while button is latched in the

down position).

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3.2 EXPLANATION OF CONTROL SYSTEM

The G32M and G32MS Turbofan convection ovens feature multi-function operator controls for which a correct understanding of their operation is required before carrying out any service or fault repair work. The control device functions are explained as follows:

A power switch on the control panel isolates all to the controls of the oven. With the power switch Off all functions of the oven are inoperable.

With the power switch On (illuminated) power is directly supplied to the 60 minute bake timer, steam (water injection) switch, door microswitch, light switch, the temperature control circuit, and the fan motor. The oven circulation fan will continuously run whenever the oven is switched on. The control panel light switch will turn the oven lights on when the door is closed. The oven lights will come on automatically when the door is open, as this is controlled by the door microswitch.

The 60 minute timer is a mechanical timer and can therefore be operated with the oven’s power switch On or Off. However, only with the oven’s power switch On will the switch contacts of the 60 minute timer turn on the time-up buzzer and illuminate the time-up indicator on the control panel. The buzzer and time-up indicator provide indication that the time setting has run down to zero and at this point will remain On continuously until the 60 minute timer has been manually set back to the Off (vertical) position. The 60 minute timer does not control any other part of the oven’s operating system as this timer is independent of the temperature control and heating system.

The steam (water injection) switch on the control panel can be operated whenever the power switch is On. The switch is momentary and when depressed will operate the electric solenoid valve at the rear of the oven and inject water across the oven fan from the flat spray (vertical) nozzle positioned at the rear of the oven. Releasing the steam button will close the solenoid valve. This feature is used to instantaneously add steam into the oven.

The temperature control of this oven is with a capillary type thermostat which can be set to a required cooking temperature.

The control panel indicator light above the thermostat knob cycles On and Off with the thermostat to indicate when the gas burners are on and the oven is heating.

The G32M and G32MS Turbofan ovens have an infrared surface combustion burner fitted in a burner box underside the oven. The burner box is directly ducted into the oven chamber through a flue duct connecting to an opening behind the oven circulation fan. The fan draws the burner box heated air and products of combustion directly into the oven chamber (directly fired system) to maximise performance. A flue exit in the top of the oven chamber provides final flueing of the combustion products out of the oven.

The burner being of an infrared type is provided with primary combustion air at the injector orifice intake at the front of the burner, and draws in the primary air through the venturi effect of the burner mixer tube elbow. Additional secondary air is provided in the burner box via an air intake on the underside of the burner box that is intake ducted to the air openings on the right hand side of the G32 base assembly. The addition of the secondary air allows for complete combustion of the gas due to the infrared burner being under the draft conditions of the oven fan extraction on the burner box. Accordingly, the infrared burner will display conventional surface combustion infrared combustion characteristics as well as having a flame plume drafted toward the right hand side of the oven (toward the burner box flue duct) when viewed from the front of the oven, after removal of the front service panel.

The burner is automatically controlled by the main oven thermostat or hold thermostat, via an automatic ignition and valve control device, which operates a gas solenoid valve to provide gas to the burner as required to maintain the set thermostat temperature.

NOTE:

control and gas control valve operate on 24 volts AC through a 110 volt - 24 volt transformer. For these models the thermostat powers the transformer, whereas on 220-240 volt models the thermostat powers the ignition control directly.

On the thermostat calling for heat, the thermostat will switch power to the ignition control. The ignition control will then power the gas control valve to open the solenoids

On 110 volt models the ignition

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and provide gas to the burner. At the same time the ignition control will generate a high voltage ignition spark sequence conveyed to the ignition electrodes mounted at the front of the burner and oven through a high tension ignition cable. The spark and earth ignition electrodes will spark across the end gap between these two to ignite the burner.

On successful ignition of the burner the third electrode, being a flame rectification rod, will be in the burner flame. This provides the ignition control with confirmation that the burner is lit by establishing a micro-amp current from the electrode to earth through the flame due to combustion flames being ionised and therefore able to conduct minute electrical currents. The flame electrode is connected to the ignition control with an insulated wire conductor.

If this ignition sequence occurs correctly the spark sequence will be stopped and the burner will continue to operate until the thermostat switches off and shuts down the ignition control and consequently closes the gas solenoid valve.

Should the ignition control not sense the burner flame within a fixed ignition / spark sequence period, the ignition control will lockout and turn off the gas solenoid valve on 220-240 volt models. Lock-out condition requires the oven thermostat to be switched off before operation can be restarted. On 110 volt models only, an unsuccessful ignition attempt will be followed by a 30 second purge with the gas control valve shut, then re-attempt ignition automatically. 2 re-ignition retries will be attempted. If unsuccessful the ignition control will then lock-out and shut the gas valve off.

If the ignition control loses the burner flame during an on period, a re-ignition attempt will be started automatically. If this is unsuccessful the ignition will go to lock-out mode.

NOTE:

have different ignition sequence and re-ignition specifications. Refer to appendix A for specific model details.

The gas solenoid valve also includes the gas regulator and on installation is adjusted to achieve correct burner gas operating pressure.

The G32M and G32MS Turbofan convection ovens feature a Roast-and-Hold system which

Different voltage and market models

can be used to automatically set the oven to a fixed holding temperature at the end of a timed cooking period. When the Roast-andHold switch is turned On the switch will illuminate and switch on a relay found inside the control panel, at the base of the control housing next to the door microswitch. When the relay is switched ON a normally closed switch pole on the relay is opened and the normal power supply to the oven thermostat is isolated. A second normally open switch pole is closed and this provides power to the 3 hour roast timer.

If the roast timer is in the Hold (vertical) position the timer switch contacts will be in their normally closed position and supply power directly to the Hold thermostat located behind the control panel. The Hold thermostat is factory set to 75°C (167°F) and will supply power to the ignition and gas burner as required to maintain its preset temperature.

The thermostat heating light will also cycle On/Off as the Hold thermostat maintains temperature.

In the Roast-and Hold mode the 3 hour timer can be set to a selected roasting time. During this time period the normally open switch contacts of the timer are closed. The timer has two change over switches and in this position one is used to supply power to its timing motor and the other is used to switch power directly to the main oven thermostat. During the 3 hour timer run-down period the oven temperature will be controlled by the main oven thermostat to the set temperature and operate as previously described.

When the 3 hour timer has run down and reached the Hold position the two switch contacts change over to their normally closed position which isolates power from the timer motor and the oven thermostat. It also switches power back to the oven hold thermostat. At this point the temperature control is now maintained by the hold thermostat as previously described. To cancel the hold circuit the Roast-and-Hold switch is turned Off. This turns off the relay which removes power from the 3 hour timer and closes the pole on the relay that feeds the main oven thermostat. The Hold indicator light above the 3 Hour timer will illuminate whenever the oven is operating in hold mode (Roast ‘n Hold selected, and 3 Hour timer at zero position).

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The factory preset hold thermostat can be adjusted as required to change the holding temperature if necessary. Refer Service section for this procedure.

The Troubleshooting Guide (Section 5) should be used to identify any incorrect oven operation. On correct identification of the operating fault the Troubleshooting Guide will make reference to the corrective action required, or refer to the Fault Diagnosis section and/or Service section to assist in correction of the fault.

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4. MAINTENANCE

WARNING: ALL INSTALLATION AND SERVICE REPAIR WORK MUST BE CARRIED OUT BY QUALIFIED PERSONS ONLY.

4.1 CLEANING

WARNING: ALWAYS TURN THE

POWER SUPPLY OFF BEFORE CLEANING.

IMPORTANT: THIS UNIT IS NOT

WATER PROOF. DO NOT USE A WATER JET SPRAY TO CLEAN INTERIOR OR EXTERIOR OF THIS UNIT.

EXTERIOR

Clean with a good quality stainless steel cleaning compound. Harsh abrasive cleaners may damage the surface.

Do not use oven cleaners or caustic solutions to clean the control panel as these cleaners will damage plastic components.

INTERIOR

Ensure that the oven chamber is cool. Do not use wire brushes, steel wool or other abrasive materials. Clean the oven regularly with a good quality oven cleaner. Take care not to damage the fan or the tube at the right side of the oven which controls the thermostat.

OVEN RACKS

To remove, slide out to the stop position, raise the front edge up, and lift out.

SIDE RACKS

To remove, lift front top to disengage and slide rack forward. To replace, slide top rear slot in rack onto rear stud, then engage front keyhole on front stud.

OVEN BASE TRAY

Remove when cleaning oven, and to allow easier cleaning of enamelled base tray. Ensure tray is refitted before use.

LAMP GLASS

To remove glasses, unscrew anti-clockwise. To replace, screw in clockwise.

IMPORTANT: DO NOT OVER TIGHTEN LAMP GLASS.

NEVER OPERATE OVEN WITH LAMP

GLASSES REMOVED

OVEN SEALS

To remove, hold at their centre point and pull forward until they unclip. Remove side seals first, then top and bottom. The seals may be washed in the sink, but take care not to cut or damage them. To replace, ensure that the lip is facing the oven opening. Fit the top and bottom seals first, then the side seals.

OVEN DOOR GLASS

Clean with conventional glass cleaners.

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4.2 ROUTINE PROCEDURES

PROCEDURE INTERVAL

DOOR SEALS Check for deterioration. 12 months

DOOR PIVOT BUSHES Check for wear. 12 months

DOOR CATCH Ensure that catch is adjusted such that the door closes

properly.

WATER NOZZLE Check for liming in water nozzle. 12 months

HT LEAD / ELECTRODE Check for deterioration. 12 months

BURNER PRESSURE Check that the unit is operating at the correct operating

pressure.

12 months

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5. TROUBLE SHOOTING

WARNING: ALL INSTALLATION AND SERVICE REPAIR WORK MUST BE CARRIED OUT BY QUALIFIED PERSONS ONLY.

FAULT POSSIBLE CAUSE REMEDY

THE OVEN DOES NOT OPERATE / START

NO HEAT / BURNER NOT WORKING

The mains isolating switch on the wall, circuit breaker or fuses are “off” at the power board.

The power switch on the oven is off.

Incorrect electrical supply.

(Refer fault diagnosis 6.1.1)

Overtemp tripped (UK only).

(Refer fault diagnosis 6.1.1)

Power switch on unit faulty.

(Refer fault diagnosis 6.1.1)

Gas supply not turned on.

Manual isolating valve on unit closed.

Incorrect gas pressure setting for burner

Blocked injector.

Burner ignition spark faulty.

(Refer fault diagnosis 6.1.2)

Burner flame not being sensed.

(Refer fault diagnosis 6.1.2)

Ignition transformer faulty 110V models only

(Refer fault diagnosis 6.1.2)

Ignition / burner control box faulty.

(Refer fault diagnosis 6.1.2)

Gas valve faulty.

(Refer fault diagnosis 6.1.2)

No power to thermostat.

(Refer fault diagnosis 6.1.2)

Thermostat faulty.

(Refer fault diagnosis 6.1.2)

Turn on.

Depress switch. Switch will illuminate.

Ensure electrical supply correct.

Reset / replace overtemp.

(Refer service section 6.3.16)

Replace.

(Refer service section 6.3.4)

Turn on gas supply

Remove r/h service panel and turn on/open isolating valve.

Set correct regulator pressure.

(Refer section 2: Installation for correct setting procedure)

Clean / replace.

(Refer service section 6.3.21)

(Refer fault diagnosis 6.1.2)

Replace.

(Refer service section 6.3.17)

Replace.

(Refer service section 6.3.18)

Replace.

(Refer service section 6.3.20)

Identify fault and correct.

Replace.

(Refer service section 6.3.9)

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FAULT POSSIBLE CAUSE REMEDY

BURNER INCORRECT COLOUR

(Refer installation section— Gas Connection and Adjustment for correct colour)

BURNER NOISY (BURNER BLOWBACK / BURNER BACKFIRE)

Incorrect gas type.

Incorrect burner orifice size fitted.

Incorrect burner pressure setting.

Obstructed burner injector.

Burner obstructed.

Oven flue obstructed.

Oven fan obstructed.

Injector out of alignment.

Oven not installed with correct legs / feet fitted. (Not applicable to units on stands)

Installation clearances not correct.

Gas leak.

Flue obstruction.

Oven fan not operating.

(Refer Fault: Fan doesn’t operate)

Burner obstruction.

Burner faulty.

(Refer fault diagnosis 6.1.3)

Check appliance gas type. (Refer installation section)

Ensure orifice is correct.

(Refer specification section)

Check gas pressure.

(Refer installation section— Gas Connection and Adjustment)

Check injector.

(Refer service section 6.3.21)

Remove burner and inspect for obstructions. (Refer service section 6.3.22)

Check for obstructions.

Check injector alignment.

(Refer service section 6.4.9)

Fit correct legs/feet (Refer installation section)

Ensure correct installation clearances. (Refer installation section)

Leak test and repair.

Ensure oven flue/vent on top of oven is not obstructed.

Ensure oven flue/vent not blocked on inside of oven.

Remove burner and inspect for obstruction. (Refer service section 6.3.22)

Replace. (Refer service section 6.3.22)

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FAULT POSSIBLE CAUSE REMEDY

FAN DOESN’T OPERATE Fan motor faulty.

(Refer fault diagnosis 6.1.4)

Wiring.

OVEN LIGHT NOT ILLUMINATING - DOOR OPEN (AUTOMATICALLY ON)

OVEN LIGHT NOT ILLUMINATING - DOOR CLOSED (MANUALLY SWITCHED ON)

NO WATER INJECTION / STEAM

Blown bulb.

No power to light.

(Refer fault diagnosis 6.1.5)

Blown bulb.

Light switch faulty.

(Refer fault diagnosis 6.1.6)

Water not turned on.

Oven water nozzle blocked.

Fault with water valve.

(Refer fault diagnosis 6.1.7)

Steam switch faulty.

(Refer fault diagnosis 6.1.7)

Replace.

(Refer service section 6.3.15)

Check and tighten any loose wiring.

Replace.

(Refer service section 6.3.1)

Correct fault.

Replace.

(Refer service section 6.3.1)

Replace.

(Refer service section 6.3.4)

Turn water on at water supply.

Remove, clean or replace. (Refer service section 6.3.13)

Service or replace as required.

(Refer service section 6.3.11,

6.3.12)

Replace. (Refer service section 6.3.4)

CONTINUOUS WATER OUT OF OVEN WATER NOZZLE

60 MINUTE TIMER WILL NOT TIME DOWN

60 MINUTE TIMER INACCURATE BELOW 20 MINUTES

60 MINUTE TIMER NO TIME UP BUZZER

60 MINUTE TIMER NO TIME UP INDICATOR

With oven on only—Electrical fault.

(Refer fault diagnosis 6.1.8)

With oven on or off - water valve faulty or requires cleaning.

Timer faulty.

Timer not set correctly.

Zero (time up) position not set correctly.

Buzzer faulty.

(Refer fault diagnosis 6.1.9)

Timer not switching on buzzer.

(Refer fault diagnosis 6.1.9)

Indicator faulty.

(Refer fault diagnosis 6.1.10)

Correct electrical fault.

Service or replace as required.

(Refer service section 6.3.11,

6.3.12)

Replace.

(Refer service section 6.3.7)

For timer settings below 20 minutes, always rotate past 20 minutes, then back to desired time.

(Refer service section 6.4.8)

Replace.

(Refer service section 6.3.5)

Replace.

(Refer service section 6.3.7)

Replace. (Refer service section 6.3.3)

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FAULT POSSIBLE CAUSE REMEDY

NO TEMPERATURE CONTROL (TEMPERATURE OVERRUN)

SLOW RECOVERY Oven in ‘Roast ‘n Hold’ mode.

NO THERMOSTAT HEATING INDICATOR

ROAST TIMER (180 MINUTE) WILL NOT TIME DOWN

NO HOLD INDICATOR

HOLDING TEMPERATURE INCORRECT

Thermostat faulty. (Refer fault diagnosis 6.1.11)

Overloading of oven.

Fan not working.

Thermostat out of calibration.

(Refer fault diagnosis 6.1.12)

Low gas pressure.

Blocked burner orifice.

Incorrect gas type.

Indicator faulty.

(Refer fault diagnosis 6.1.13)

Roast ’n’ Hold switch not depressed.

No power to timer / timer faulty. (Refer fault diagnosis 6.1.14)

‘Roast ‘n Hold’ switch faulty. (Refer fault diagnosis 6.1.14)

Faulty indicator. (Refer fault diagnosis 6.1.15)

Faulty timer. (Refer fault diagnosis 6.1.15)

Hold thermostat set temperature incorrect.

Hold thermostat faulty. (Refer fault diagnosis 6.1.16)

Replace. (Refer service section 6.3.9)

Switch off ‘Roast ‘n Hold’.

Reduce oven loading.

Check fan operation.

Correct calibration. (Refer service section 6.4.2)

Check and adjust.

(Refer section 2: Installation for correct setting procedure)

Clean.

(Refer service section 6.3.21)

Check appliance gas type.

Replace. (Refer service section 6.3.3)

Depress switch. Switch will illuminate.

Correct electrical fault / replace timer. (Refer service section 6.3.8)

Replace. (Refer service section 6.3.4)

Replace.

(Refer service section 6.3.3)

Replace. (Refer service section 6.3.8)

Adjust to correct temperature. (Refer service section 6.4.7)

Replace.

(Refer service section 6.3.10)

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FAULT POSSIBLE CAUSE REMEDY

DOOR DOES NOT CLOSE Tray in way of door.

Door seal obstruction.

Door handle installed incorrectly.

Door catch setting incorrect.

Door pivot bushes / pins worn.

DOOR SEAL LEAKS

Door seal damaged.

Door seal incorrectly fitted.

Door catch setting incorrect.

Door pivot bushes / pins worn.

Door catch striker plate worn.

Correctly position tray in rack.

Correctly install door seal.

(Refer service section 6.3.25)

Fit correctly. (Refer installation section)

Adjust.

(Refer service section 6.4.5)

Replace.

(Refer service section 6.3.26)

Replace. (Refer service section 6.3.25)

Correctly install door seal.

(Refer service section 6.3.25)

Adjust.

(Refer service section 6.4.5)

Replace.

(Refer service section 6.3.26)

Replace.

(Refer installation instructions—Door handle installation)

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6. SERVICE PROCEDURES

WARNING: ENSURE POWER SUPPLY IS SWITCHED OFF BEFORE SERVICING.

WARNING: ALL INSTALLATION AND SERVICE REPAIR WORK MUST BE CARRIED OUT BY QUALIFIED PERSONS ONLY.

SECTION PAGE NO.

6.1 FAULT DIAGNOSIS .............................................................................................................24

6.1.1 Oven Does Not Operate / Start ...........................................................................24

6.1.2 No Heat / Burner Not Working.............................................................................24

6.1.3 Burner Noisy (Burner Blowback / Backfire) .........................................................27

6.1.4 Fan Does Not Operate ........................................................................................27

6.1.5 Oven Light Not Illuminating—Door Open ............................................................27

6.1.6 Oven Light Not Illuminating—Door Closed ..........................................................28

6.1.7 No Water Injection / Steam..................................................................................28

6.1.8 Continuous Water Out Of Oven Water Nozzle ....................................................28

6.1.9 60 Minute Timer No Time Up Buzzer ..................................................................28

6.1.10 60 Minute Timer No Time Up Indicator................................................................29

6.1.11 No Temperature Control (Temperature Overrun)................................................29

6.1.12 Slow Recovery.....................................................................................................29

6.1.13 No Thermostat Heating Indicator.........................................................................29

6.1.14 Roast Timer (180 Minute) Will Not Time Down ...................................................29

6.1.15 No Hold Indicator.................................................................................................30

6.1.16 Holding Temperature Incorrect............................................................................30

6.2 ACCESS ...............................................................................................................................30

6.2.1 Control Panel.......................................................................................................30

6.2.2 Service Panel (Side Panel)..................................................................................30

6.2.3 Burner Access Panel ...........................................................................................31

6.2.4 Manual Isolating Valve / Gas Control Valve Access Panel .................................31

6.2.5 Control Panel (Rear)............................................................................................31

6.3 REPLACEMENT ...................................................................................................................32

6.3.1 Lamp Bulb / Glass ...............................................................................................32

6.3.2 Door Microswitch .................................................................................................32

6.3.3 Indicator Neon Light ............................................................................................32

6.3.4 Power / Roast / Lights / Water Switches .............................................................32

6.3.5 Buzzer .................................................................................................................32

6.3.6 Hold Relay ...........................................................................................................33

6.3.7 Bake Timer ..........................................................................................................33

6.3.8 Roast Timer .........................................................................................................33

6.3.9 Thermostat ..........................................................................................................33

6.3.10 Hold Thermostat ..................................................................................................34

6.3.11 Water Solenoid ....................................................................................................34

6.3.12 Water Solenoid Cleaning ....................................................................................34

6.3.13 Spray Nozzle .......................................................................................................35

6.3.14 Fan ......................................................................................................................35

6.3.15 Motor ...................................................................................................................35

6.3.16 Overtemp (UK Units Only)...................................................................................35

6.3.17 24 Volt Transformer (USA/Canada Units Only) ...................................................36

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6.3.18 Ignition Box ..........................................................................................................36

6.3.19 Ignition Electrodes ...............................................................................................36

6.3.20 Gas Control Valve ...............................................................................................37

6.3.21 Burner Injector .....................................................................................................37

6.3.22 Burner..................................................................................................................37

6.3.23 Outer Glass .........................................................................................................37

6.3.24 Inner Glass ..........................................................................................................38

6.3.25 Door Seals ...........................................................................................................38

6.3.26 Door Pivot Bushes...............................................................................................38

6.3.27 Stainless Steel Door Outer Glass........................................................................38

6.3.28 Stainless Steel Door Inner Glass.........................................................................39

6.4 ADJUSTMENT / CALIBRATION ..........................................................................................39

6.4.1 Regulator Adjustment ..........................................................................................39

6.4.2 Thermostat Calibration ........................................................................................39

6.4.3 Confirming Overtemp Thermostat Calibration (UK Units Only) ...........................40

6.4.4 Door Microswitch Adjustment ..............................................................................40

6.4.5 Reversing the Door..............................................................................................40

6.4.6 Door Roller Catch Adjustment .............................................................................41

6.4.7 Door Alignment....................................................................................................41

6.4.8 Hold Temperature Adjustment.............................................................................41

6.4.9 60 Minute Timer Zero Position Adjustment .........................................................41

6.4.10 Burner Injector Alignment ....................................................................................42

6.4.11 Ignition Electrode Adjustment..............................................................................42

6.4.12 Gas Type Conversion ..........................................................................................42

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6.1 FAULT DIAGNOSIS

6.1.1 OVEN DOES NOT OPERATE / START

Incorrect electrical supply

Check that the voltage across phase and neutral (L1 and L2) terminals of terminal block is the voltage as stated on the unit’s electrical rating plate.

If incorrect, check electrical connection of supply wiring and / or check electrical supply.

Overtemp tripped (UK units only)

Open the control panel. Check for power at terminal 1 of power switch. If power at terminal 1 then overtemp is ok, refer “power switch faulty” (below).

WARNING: OVERTEMP BUTTON IS

LIVE. ISOLATE UNIT FROM POWER SUPPLY BEFORE RESETTING.

If no power to terminal 1, inspect overtemp reset button (at rear of control cavity). If the overtemp has tripped then the reset button will have popped out, and will click when depressed. If the overtemp resets then a fault exists with the temperature control of the oven (check calibration, refer 6.4.2, or overtemp calibration is faulty, refer 6.4.3).

If the overtemp button cannot be reset, and the oven temperature is below 300°C (- overtemp will not reset above 300°C), then the overtemp is faulty - replace.

Power switch faulty

Check if power switch latches. If the switch does not latch, then switch is faulty—replace.

With switch latched, check voltage across terminal one to terminal three or four. If there is no voltage, check for fault in wiring.

Check voltage across terminal two to terminal three or four. If there is no voltage, then switch is faulty—replace.

NOTE:

When power switch is latched, it

should illuminate if it is operating correctly.

temporarily, but fails to stay alight, then the problem is in the flame sensing, not spark ignition. Refer “Burner flame not being sensed” (following).

Firstly determine if spark is being generated. Remove the front service panel and turn the thermostat on to initiate a heating cycle. Look through the round viewing holes next to the electrode assembly, and look for spark generation at the end of the electrodes. If spark is heard but not visible, turn off/isolate gas supply, and remove electrode assembly.

With gas supply off, turn thermostat back on again with electrode assembly suspended in air. A correctly functioning ignition system should show sparking visible across spark and earth rod ends. If spark is not seen at electrode ends, or sparking is erratic, this indicates that there is a high voltage short/ breakdown between the ignition box and the electrode ends.

Possible causes to investigate are as follows, inspect and correct as necessary:

- Spark gap too large (see the following section).

- Cracked spark rod ceramic, or carbon build-up.

- HT leads to spark electrode and earth broken/deteriorated.

- HT leads between ignition electrodes and ignition control box broken/deteriorated.

- No spark from ignition box, refer ignition box faulty.

Spark gap setting

With spark electrode assembly removed, inspect spark rod and earth electrode settings, and spark gap settings - refer section 6.4.11.

NOTE:

With spark system correctly checked, re-install into burner box and re-check operation.

If fault persists it is possible that the electrodes are out of position in relation to the burner flame. Adjustment may be necessary to set the electrode gap to the correct position (refer to following diagram).

Use drill bits to gauge spark gap

settings

6.1.2 NO HEAT/BURNER NOT WORKING

Burner ignition spark not working

A faulty spark system is one that does not light the burner at all. If the burner is being lit

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THESE ELECTRODES MUST BE IN

MUST BE IN BLUE FLAME

ORANGE INFRARED BURN

SPARK ELECTRODES

SURFACE COMBUSTION ZONE

FLAME SENSOR

THIS ELECTRODE

SURFACE COMBUSTION

BURNER VENTURI

BURNER MESH

BURNER BODY

AS VIEWED FROM FRONT OF OVEN

BLUE FLAME

Figure 6.1.1

Burner flame not being sensed

The flame sensing electrode requires correct positioning in the burner flame. Incorrect gas pressures, types, injector sizes, etc will affect correct operation of flame sensing system. Ensure that these are checked and correct before carrying out further investigation. Also, an incorrectly earthed/grounded appliance will cause faults with the flame sensing system. Always ensure a correct earth/ground connection on the appliance connection and supply.

If the flame rod is touching the burner mesh then there is a short circuit to earth, and this will cause the ignition control to not sense the flame correctly. As the relationship of the flame rod to the burner mesh cannot normally be seen, this fault would normally be indicated by a burner that fails to stay alight during operation, or during an ignition attempt the sparking continues after the burner is lit. The flame rod can be adjusted to be clear of the burner, as per the previous diagram (figure

6.1.1) and section 6.4.11.

Always inspect the connection lead from the flame rod to the ignition box for deterioration, bad connections, or insulation breakdown.

Note:

If phase and neutral are reversed, ignition will spark and burner will light but flame sensor will not sense the flame.

Ignition transformer faulty - 110V models only

It is important to verify correct 110Vac - 24Vac transformer operation before checking these 24Vac Ignition Control Boxes.

With control panel open check transformer primary and secondary voltages are correct.

Transformer Primary Winding - 110-120Vac

Lead colours White - L1 (Phase) Black - L2 (Neutral)

Check voltage at the black and white lead connections on control panel. Voltage should

be 110-120Vac. If not, check for wiring or power supply fault.

Transformer Secondary Winding - 24Vac

Lead colours - yellow and blue

Check voltage at yellow and blue lead connections on ignition control box. With thermostat on (calling for heat) voltage should be 24Vac ± 4Vac across yellow and blue leads. If not, check transformer thermal breaker on rear of transformer for trip. If tripped, reset and recheck operation.

If the transformer cannot be reset, or if transformer has not tripped out, but secondary output voltage is incorrect, then transformer is faulty - replace.

Ignition box faulty - 110V models only

The direct spark ignition control boxes used on 110V model G32M and G32MS’s are 24Vac type.

To check correct operation open control panel. With power on, turn thermostat on so heating indicator on control panel illuminates (calling for heat).

Correct ignition box operation should result in ignition box commencing spark at ignition electrodes and opening gas valve to ignite burner, then maintain burner ON after successful ignition.

If no spark is generated or heard, check that ignition box has correct supply voltage. (Check voltage across terminal ‘GND’ (black/ green wire) and ‘TH’ (blue wire)). 24Vac ± 4Vac should be measured across these terminals with thermostat on and calling for heat. If not, check transformer (refer previous).

If voltage correct, but no spark generated, check ignition box Fault Diagnostic LED indicator status. The Diagnostic LED is at the top of the ignition box.

Inspect for Diagnostic Indicator as follows:

- 2 Flashes Indicates that there was a flame already present when ignition attempted.

Possible gas valve fault (burner

staying on). Refer to fault diagnosis - Gas Valve Faulty.

- 3 Flashes Indicates LOCK-OUT condition.

Possible flame rectification rod

short to earth. Refer to fault diagnosis 6.1.2 - Burner Flame Not Being Sensed.

If ignition box fault indicator LED does not identify fault, and voltage correct but no spark generated, ignition box is faulty - replace.

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NOTE: Ensure all wiring and connections to

ignition box are correct before replacing.

Ensure unit has Earth/Ground connection on unit and at supply.

If ignition box generates a spark, but burner doesn’t ignite, or if burner ignites but doesn’t stay alight, firstly check correct electrode assembly operation. Refer fault diagnosis

6.1.2 - Burner Ignition Spark Not Working.

If all checks are correct, but burner fails to stay alight then burner box is faulty - replace.

NOTE:

checked by inserting a multi-meter capable of measuring micro-amps in series with flame rectification rod connection to ignition box. With power off, disconnect flame rectification rod connection to ignition box (terminal ‘S1’ on Fenwal models), and connect multimeter between flame rectification rod lead and ignition box terminal. Turn on power and thermostat. With burner running a current of no less than that specified below should be read.

Fenwal Models 0.7 micro Amps

If no current reading, or less than specified, re-check electrode settings, gas pressure, gas type etc, and if still not correct, ignition box requires replacement.

Ignition box faulty - 220-240 Volt models only

The direct spark ignition control boxes used on 220-240 volt model G32’s are operated from direct voltage supply from the thermostat / hold thermostat circuit.

Correct ignition box operation should result in ignition box commencing spark at ignition electrodes and opening gas valve to ignite burner, then maintain burner on after successful ignition.

IMPORTANT:

pre-purge period of 5 seconds before the spark and gas valve opening commences.

For all 220-240 volt models after using SIT ignition boxes, check correct supply voltage across terminal T10 (red phase wire), and terminal T12 (black neutral wire) on ignition box.

The measured voltage should equal the supply voltage, ie 220-240 volts. If not check wiring.

If voltage is ok, but no spark is generated,

Correct flame sensing current can be

These models have a

check that all wiring at ignition box has good connections.

Ensure that the ignition box has earth/ground connection, and that appliance has earth/ ground at supply, and supply is earthed.

If all connections are ok, and no ignition sequence operating, then ignition box is faulty

- replace.

If ignition box generates spark, but burner doesn’t ignite, or if burner ignites but doesn’t stay alight, firstly check correct electrode assembly operation. Refer fault diagnosis

6.1.2 - Burner Ignition Spark Not Working.

If all checks are correct, but burner fails to stay alight then ignition box is faulty - replace.

NOTE:

checked by inserting a multi-meter capable of measuring micro-amps in series with flame rectification rod connection to ignition box. With power off, disconnect flame rectification rod connection to ignition box and connect multimeter between flame rectification rod lead and ignition box terminal. Turn on power and thermostat. With burner running a current of no less than that specified below should be read.

All Models 1.0 micro Amps

If no current reading, or less than specified, re-check electrode settings, gas pressure, gas type etc, and if still not correct, ignition box requires replacement.

Gas valve faulty

The gas valve performs two functions:

- Providing regulation of gas pressure for

- Opening and closing gas supply to the

In all cases it must first be established that the gas supply is on, that the manual isolating valve in line with the gas valve on the appliance is open, and that the supply pressure is equal to or greater than the required burner operating pressure (refer specification section).

To determine if valve solenoids are operating correctly, attach a pressure gauge to the burner pressure test point after the gas valve, and turn thermostat on. Check gas pressure. If pressure is not correct for the appliance specifications, remove the regulator cap on the gas valve, and adjust the regulator spring to increase or decrease the pressure. If the

Correct flame sensing current can be

the burner,

main burner.

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pressure is unable to be adjusted, remove regulator spring and check for correct type:

LPG/Propane Blue spring

Natural Gas Green spring

If the regulator spring and supply pressure are correct, but the burner pressure is still incorrect, check the gas valve solenoid

Thermostat faulty

Set thermostat to 200°C or 400°F. Check the voltage out of terminal 1 on the thermostat. If there is no voltage then the thermostat is faulty—replace.

If the voltage is correct and the heating light is on then check all wiring to heating contactor.

operation. With thermostat turned on check voltage at connections to the gas valve.

110 volt models should have 24 volt ac supply on both coils.

220-240 volt models should have 220-240 volts.

If voltage is correct when thermostat is on, and gas valve is not opening then the valve is faulty - replace. If voltage is incorrect, check wiring and connections to ignition box and refer to ignition box fault diagnosis.

6.1.3 BURNER NOISY

Burner faulty

With burner removed (refer 6.3.22), inspect burner for leak holes in construction and deterioration in mesh surfaces. Tears or corrosion holes in mesh will be evidence of faulty burner condition. Replace burner if faulty.

NOTE:

normal, and will not necessitate burner replacement.

No power to thermostat

Check voltage to terminal 2 on oven thermostat. If there is no voltage then check voltage through terminal 5 and one on hold

6.1.4 FAN DOESN’T OPERATE

relay (behind control panel). If there is no voltage to terminal 5 then check wiring. If there is no voltage to terminal 1 then check that the hold relay (fig 6.1.2) has no power at relay coil terminal 7. If relay coil is not energised (ie no power at 7) and no power out of terminal 1, then the relay is faulty—replace.

Fan motor faulty

Check the supply voltage across motor terminals. If there is no voltage then check the electrical connections of wiring.

If voltage is correct then check the oven fan for free rotation. Remove any obstruction.

If fan is free to spin and the voltage at motor terminals is correct, then the motor is faulty— replace.

Minor mesh surface buckling is

Hold Relay

Figure 6.1.2

If relay is energised (ie power at 7) then ’Roast n Hold’ switch is on and unit is in hold mode. Turn off ’Roast n Hold’ and recheck operation.

NOTE:

There should be no voltage across

these terminals when ‘Roast ‘n Hold’ is not selected.

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6.1.5 OVEN LIGHTS NOT ILLUMINATING—

DOOR OPEN (AUTOMATICALLY ON)

No power to lights

Check the supply voltage across lamp housing terminals at RH side rear of oven. If the voltage is correct, replace the bulb (if faulty). If the bulb is OK, check lamp housing. Replace if faulty.

If there is no voltage, open oven door and manually depress door microswitch actuator at bottom right of oven. If this activates the lights, then the microswitch actuator arm behind the control panel requires adjustment.

Check voltage across micro-switch terminals to neutral.

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With the door open there should be power to the com terminal and the n.c. terminal.

If not, microswitch is faulty—replace.

n.c.

Microswitch

com

Figure 6.1.3

6.1.6 OVEN LIGHTS NOT ILLUMINATING— DOOR CLOSED (MANUALLY SWITCHED ON)

Light switch faulty

Check voltage to the bottom terminal of the switch. If there is no voltage, then check wiring.

With switch depressed, check voltage at top terminal. If there is no voltage, then replace the switch.

If voltage is correct, then check wiring to light.

NOTE:

Alternately, perform a continuity test

across the terminals with the light switch depressed.

With switch depressed, check for voltage at top terminal. If there is no voltage then replace switch. If voltage correct, check wiring to solenoid coil.

If power supply to the coil is correct, disconnect wiring to coil and check the resistance of the coil windings.

Correct coil resistance:

208 - 240V 3650 ohms 110V 1085 ohms

NOTE:

If open circuit / high resistance, then

the coil is faulty—replace.

If coil resistance is correct, rewire and listen for an audible solenoid click when the steam switch is depressed.

If solenoid can be heard functioning, and oven water nozzle is not blocked, then remove water solenoid and fittings and check for blockages.

6.1.8 CONTINUOUS WATER OUT OF OVEN WATER NOZZLE

Water solenoid electrical fault

With control panel steam switch not depressed, check for power supply across solenoid coil. If there is power to the coil, then check wiring and steam switch (refer 6.1.7).

6.1.7 NO WATER INJECTION / STEAM

Steam switch faulty

Check voltage to the bottom terminal of the switch. If there is no voltage, then check wiring.

With switch depressed, check voltage at top terminal. If there is no voltage, then replace the switch.

If voltage is correct, then check wiring to the solenoid.

NOTE:

Alternately, perform a continuity test across the terminals with the steam switch depressed.

Fault with water valve

Check voltage supply across the water valve solenoid coil with the steam switch depressed. If there is no power supply then check the control panel steam switch.

Check voltage to the bottom terminal of the switch. If there is no voltage, then check wiring.

6.1.9 60 MINUTE TIMER NO TIME UP BUZZER

Buzzer faulty

With timer in ‘zero’ position, check the buzzer at side of control panel (inside) for voltage across terminals. If voltage is correct then buzzer is faulty—replace.

If there is no voltage, then check wiring.

Timer not switching on buzzer

With timer in zero position, check voltage to top connection (terminal one) and bottom connection (terminal two) of timer. If there is no voltage at terminal one then check wiring.

If no voltage at terminal two then timer is faulty—replace.

NOTE:

Timer will continue to run

approximately three minutes below zero. Buzzer and time up indicator will continue until the timer is manually switched off (to vertical position).

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6.1.10 60 MINUTE TIMER NO TIME UP INDICATOR

6.1.14 ROAST TIMER (180 MINUTE) WILL NOT TIME DOWN

Indicator faulty

With the timer in the zero position, check for voltage across the indicator light. If correct, then the indicator light is faulty—replace.

If there is no voltage then check wiring.

6.1.11 NO TEMPERATURE CONTROL (TEMPERATURE OVERRUN)

Thermostat faulty

With thermostat in off (vertical) position, the heating indicator should be off. If not then the thermostat is faulty—replace.

6.1.12 SLOW RECOVERY

Thermostat out of calibration

Place an accurate digital thermometer probe in centre of oven. Set thermostat to 180°C or 355°F. Close the oven door and allow oven thermostat to cycle on and off twice. Record oven centre temperature for the next thermostat on and off cycle. The thermostat should cycle on and off between 165°C and 195°C or 330°F and 385°F when set to the above temperature. If oven temperature is outside these ranges, then the thermostat requires recalibration.

NOTE:

Thermostat cycling span should be

±15°C or 27°F

No power to timer

Check the voltage at terminal 5 on underside of the 180 minute timer.

Check that one lead of timer motor is connected to terminal five of timer and the other lead is connected to neutral of ‘Roast ’n Hold’ switch.

If voltage at terminal 5 is correct and wiring is correct then the timer motor is faulty—replace timer.

If there is no power at terminal 5, check for power supply at terminal 4 of timer. If there is voltage at terminal 4 and not at terminal 6 with timer set, then timer switch is faulty—replace timer.

Terminal 4

Terminal 1

Terminal 2

Terminal 5

Terminal 6

Terminal 3

Figure 6.1.5

If terminal 4 voltage is correct, check relay at the base of the control housing behind control panel is latched ON. If relay is ON then check wiring.

If relay is not latched ON when ‘Roast ‘n Hold’ switch illuminated then check the voltage across terminals 7 and 8 of relay coil (fig

6.1.3). If the voltage is correct but the relay is in the off position then the relay is faulty— replace.

If there is no voltage across 7 and 8 then check wiring.

6.1.13 NO THERMOSTAT HEATING INDICATOR

Indicator faulty

Check the voltage across the indicator terminals. If the voltage is correct then the indicator is faulty—replace.

If there is no voltage then check wiring.

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‘Roast ‘n Hold’ switch faulty

Check if the switch latches. If the switch does not latch then the switch is faulty—replace.

With the switch latched, check voltage across terminal 1 to terminal 3 or 4. If there is no voltage then check for fault in wiring.

Check voltage across terminal 2 to terminal 3 or 4. If there is no voltage then switch is faulty—replace.

NOTE:

When the switch is latched, it should

illuminate if operating correctly.

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6.1.15 NO HOLD INDICATOR

Indicator faulty

Check the voltage across the indicator terminals. If the voltage is correct then the indicator is faulty—replace.

If there is no voltage then check wiring.

Timer faulty

NOTE:

Timer in ‘HOLD’ position (vertical) and

‘Roast n Hold’ switch on (illuminated).

Check the voltage at terminal three of timer, with timer in hold position. If the voltage is correct then check wiring.

If there is no voltage then check voltage at terminal one of timer. If there is voltage at terminal one, but no voltage at terminal three with timer in hold position then timer switch is faulty—replace.

6.1.16 HOLDING TEMPERATURE INCORRECT

6.2 ACCESS

6.2.1 CONTROL PANEL

1) Undo the two screws at the bottom of the control panel.

Two screws

Figure 6.2.1

2) The panel can now be removed.

When closing the panel ensure wires and

thermostat capillary tubes are clear of metal or other terminals.

Hold thermostat faulty

With the power switch on and illuminated, ‘Roast ‘n Hold’ switch on and illuminated, and the roast (180 minute) timer set to hold, check that the hold indicator is illuminated.

With hold thermostat adjusted above oven temperature, check for output voltage at terminal 2 of hold thermostat. If there is no voltage and the hold thermostat will not switch on then the thermostat is faulty—replace.

If the voltage is correct but the burner is not working then check wiring and ignition box.

6.2.2 SERVICE (SIDE) PANEL

1) Undo the four screws holding the panel.

Four screws

Figure 6.2.2

2) Remove side panel.

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6.2.3 BURNER ACCESS PANEL

1) Undo two screws holding the panel.

2) Remove panel.

6.2.5 CONTROL PANEL—REAR

Power Switch

Heating Indicator

Thermostat

Bake Time Up Indicator

Buzzer

Two screws

Figure 6.2.3

6.2.4 MANUAL ISOLATING VALVE / GAS CONTROL VALVE ACCESS PANEL

1) Undo two screws holding the panel.

2) Remove panel.

Two screws

Figure 6.2.4

Bake Timer

Hold Relay

Hold Thermostat

Roast‘n Hold Switch

Roast ‘n Hold Time Up Indicator

Roast Timer

Steam Switch

Light Switch

Figure 6.2.5

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6.3 REPLACEMENT

6.3.1 LAMP BULB / GLASS

1) Unscrew lamp cover(s).

Lamp covers

Neon wires

Figure 6.3.3

2) From back push neon through front of panel rotating clockwise.

3) Push new neon in from front of panel, and reconnect wires.

Figure 6.3.1

2) Unscrew bulb out of fitting.

3) Screw in replacement bulb.

4) Ensure seal fitted. Screw lamp cover into holder with baffle fitted (do not over tighten).

6.3.2 DOOR MICROSWITCH

1) Hinge down control panel (refer 6.2.1)

2) Remove two screws holding microswitch to bracket.

Microswitch

6.3.4 POWER / ROAST / LIGHTS / STEAM SWITCHES

1) With control panel open (refer 6.2.1) remove the wires from the back of the switch, noting their positions.

Switch wires

Figure 6.3.4

2) From back push switch through front of panel.

3) Push new switch in from front of panel, and reconnect wires.

Figure 6.3.2

3) Transfer wires to new switch and re-assemble.

4) Adjust micro-switch (refer 6.4.2).

6.3.3 INDICATOR NEON LIGHT

1) With control panel open (refer 6.2.1) remove the wires from the back of the neon.

Revision 4/F3590

6.3.5 BUZZER

1) Remove control panel (refer 6.2.1).

2) Remove two screws holding buzzer / relay bracket to control panel.

Two screws

Figure 6.3.5

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3) Withdraw and remove two screws holding buzzer to bracket.

4) Transfer wires to new buzzer.

5) Reassemble in reverse order.

6.3.6 HOLD RELAY

1) Open control panel (refer 6.2.1).

2) Remove two screws securing the relay to the buzzer / relay bracket on the control panel.

Two screws

Figure 6.3.6

6.3.8 ROAST TIMER

1) Remove roast timer knob by pulling it firmly away from control panel.

2) Open control panel (refer 6.2.1) and undo

two screws securing timer.

Two screws

Figure 6.3.8

3) Transfer wires to new timer.

4) Withdraw old timer and insert new timer,

securing with screws.

5) Replace knob.

3) Withdraw and transfer wires to new relay.

4) Reassemble in reverse order.

6.3.7 BAKE TIMER

1) Remove bake timer knob by pulling it firmly away from control panel.

2) Open control panel (refer 6.2.1) and undo

two screws securing timer.

Two screws

Figure 6.3.7

3) Transfer wires to new timer.

4) Withdraw old timer and insert new timer,

securing with screws.

5) Replace knob.

6.3.9 THERMOSTAT

1) Pull knob off front of thermostat

2) Open control panel (refer 6.2.1) and undo two screws securing thermostat.

Two screws

Figure 6.3.9

3) Transfer wires to new thermostat.

4) Open oven door, remove racks and fan baffle rack. Loosen two screws securing thermostat phial bracket.

Thermostat phial

bracket

Revision 4/F3590

Figure 6.3.10

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5) Withdraw old thermostat phial through side of oven. Note position in phial bracket.

6) Insert new thermostat.

7) Re-assemble in reverse order.

NOTE:

Ensure that the thermostat phials are located in their correct positions. The main thermostat probe must be on the side closest to the door. The hold thermostat must be on the side closest to the fan.

Control thermostat

Hold thermostat

phial

Towards

the

door

5) Insert new thermostat phial.

6) Re-assemble in reverse order.

NOTE:

6.3.11 WATER SOLENOID

1) Ensure water supply is turned off.

2) To access the solenoid, remove the right hand service panel (refer 6.2.2)

3) Disconnect all water connections from the water solenoid.

4) Remove water solenoid from oven by removing two screws securing the water solenoid to its mounting bracket.

Water

solenoid

Figure 6.3.11

6.3.10 HOLD THERMOSTAT

1) Open control panel (refer 6.2.1) and undo two screws securing hold thermostat bracket.

Two screws

Figure 6.3.12

2) Remove the two screws securing the hold thermostat to the bracket, and then fit the new thermostat in its place.

3) Transfer wires to new thermostat.

3) Open oven door, remove racks and fan baffle rack. Loosen the thermostat phial bracket (refer figure 6.3.10).

4) Withdraw the old hold thermostat phial through the side of the oven. Note the position of the phial in the bracket.

Figure 6.3.13

5) Carefully withdraw solenoid.

6) Replace or service solenoid as required.

7) To reinstall, reverse procedure.

8) Check water connections do not leak.

6.3.12 WATER SOLENOID CLEANING

1) Disconnect water supply from the water solenoid.

2) Remove the sieve from the valve assembly by pulling firmly away from the assembly with a pair of pliers.

Sieve

Figure 6.3.14

3) Clean the sieve, removing all dirt and grime.

4) Replace the sieve and reconnect the water supply.

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6.3.13 SPRAY NOZZLE

1) Inside the oven remove the RH side fan baffle, then unscrew the spray nozzle.

Spray nozzle

Figure 6.3.15

2) Clean or replace as required, ensuring debris free on re-assembly.

3) Ensure that the spray nozzle is installed in the vertical position.

6.3.14 FAN

1) With baffle removed undo the centre nut.

NOTE:

LH thread - Turn clockwise to

loosen.

3) Undo the three screws holding the motor in place (from the outside) and remove motor.

4) Replace and re-assemble in reverse order.

5) Ensure wire connections are correct to the voltage supply—60 Hz / 50 Hz (fig 6.3.17)

6.3.16 OVERTEMP THERMOSTAT

(UK UNITS ONLY)

1) Open control panel (refer 6.2.1)

2) To reset, firmly press reset button.

WARNING: OVERTEMP IS LIVE.

ISOLATE UNIT FROM THE POWER SUPPLY BEFORE RESETTING.

3) To replace overtemp thermostat, remove

the two screws securing overtemp to its bracket.

Overtemp bracket

Centre nut

Figure 6.3.16

2) Replace and re-assemble in reverse order.

6.3.15 MOTOR

Note: When replacing a motor on a unit

manufactured before February 2004 refer to appendix D.

1) Remove side service panel (refer 6.2.2)

2) Remove fan (refer 6.3.14) and then remove the wires that go to the motor.

60 Hz Terminal

50 Hz Terminal

Neutral

Screws (3)

Earth / Ground

Figure 6.3.17

Figure 6.3.18

4) Remove wires from overtemp.

Thermostat phial

bracket

Figure 6.3.19

5) Open oven door, remove racks and fan baffle rack. Loosen two screws securing thermostat phial bracket.

6) Withdraw old overtemp thermostat phial through side of oven.

7) Remove fibreglass sleeving from old thermostat and fit to the replacement thermostat.

8) Replace overtemp and re-assemble in reverse order.

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6.3.17 24 VOLT TRANSFORMER (USA / CANADA UNITS ONLY)

1) Remove the right hand panel (refer 6.2.2).

2) Remove the wires from the transformer, noting their positions.

3) Remove the two screws securing the transformer to the oven.

6.3.19 IGNITION ELECTRODES

1) Remove burner access panel (refer 6.2.4).

2) Remove the ignition electrode assembly by unscrewing two screws securing electrode bracket to the burner box, and withdrawing the electrode assembly.

Two

screws

Transformer

Figure 6.3.20

4) Replace transformer and re-assemble in reverse order.

6.3.18 IGNITION BOX

1) Remove the right hand side panel (refer

6.2.2).

2) Remove two screws securing the ignition

box to the mounting plate.

3) Transfer wires from old ignition box to the

new one.

4) Secure new ignition box to the oven with

two screws.

Figure 6.3.22

3) Disconnect wires (earth at sensor, flame sensor and spark electrode at lead connections) from electrodes requiring replacement.

4) Unscrew screws/nuts securing electrodes and remove from bracket.

Electrode nuts

Flame sensor screw

Figure 6.3.23

5) Replace and reassemble in reverse order.

IMPORTANT: ENSURE ELECTRODE

LEAD CONNECTIONS ARE FULLY INSULATED TO AVOID SHORTS IN THE HIGH TENSION CIRCUIT.

Figure 6.3.21

NOTE: Ignition box may differ from that pictured here. Replacement procedure is however identical.

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6.3.20 GAS CONTROL VALVE

6.3.22 BURNER

1) Remove the manual gas control valve access panel and burner access panel (refer 6.2.4 and 6.2.5).

2) Close the manual gas valve.

3) Disconnect the mack union in the gas line next to the manual gas valve.

Mack union

Figure 6.3.24

4) Unscrew and remove the burner injector from the burner mouth at the oven front.

Burner

injector

Figure 6.3.25

5) Remove the two screws securing the gas valve mounting bracket to the burner box panels.

6) Disconnect the three leads from the gas control valve.

7) Remove the gas valve and connected piping by drawing out through the side service panel.

8) Replace and reassemble in reverse order.

1) Remove burner access panel (refer 6.2.4).

2) Remove ignition electrode assembly (refer

6.3.17)

3) Remove the saddle clamp securing the burner to the oven.

Saddle

clamp

Figure 6.3.27

4) Burner can now be withdrawn from the oven. Inspect / replace and re-assemble in reverse order.

6.3.23 OUTER GLASS

1) Open door

2) Loosen the two screws securing the bottom pivot whilst supporting the door. The pivot can now be lowered, and the door removed from the oven.

Bottom pivot

Figure 6.3.28

6.3.21 BURNER INJECTOR

1) Remove burner access panel (refer 6.2.4).

2) Remove injector from burner throat.

Burner

injector

Figure 6.3.26

3) Clean or replace injector as required.

Re-assemble in reverse order.

Revision 4/F3590

3) Remove screws securing door handle, and remove the handle from the door assembly.

Screws

Figure 6.3.29

4) Remove four screws in top trim and four screws in bottom trim of door, and remove trim panels.

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Four

screws

Four screws

Figure 6.3.30

5) Lift outer glass away from door.

6) To replace, ensure that the two silicone rubber seals are in place on the left hand and right hand side of the door frame. Clean the inside of the glass and refit it, ensuring that the silicone rubber seals cover the outer edges of the glass. Refit the trim panels.

6.3.24 INNER GLASS

1) Remove the outer glass (refer 6.3.23).

Uncrimp the retaining lugs of the window spacer and remove the spacer and glass.

Retaining

lugs

Door seals

Figure 6.3.32

6.3.26 DOOR PIVOT BUSHES

1) Remove door as per steps one and two of section 6.3.23.

2) Remove the top and bottom pivot brackets (two screws).

Two Screws

Figure 6.3.33

3) Door bushes can now be removed and replaced.

Figure 6.3.31

2) To replace, ensure the silicone rubber seal has not been displaced. Clean the glass and refit it. Place the window spacer in position and crimp the retaining lugs over to hold the glass in place. Refit outer glass as above.

6.3.25 DOOR SEALS

1) Open oven door.

2) To remove, hold at their centre point and pull forward until they unclip

3) Refit new seals.

NOTE:

Fit top and bottom seals first, with

open side of the seal facing downwards. Fit side seals with open side facing outwards.

Revision 4/F3590

Door pivot

bush

Figure 6.3.34

4) Reinstall door by reversing steps one to two of section 6.3.23.

6.3.27 STAINLESS STEEL DOOR

- OUTER GLASS

1) Remove the door as per steps one and two of section 6.3.23.

2) Remove the top and bottom pivots (two screws each), and the door handle and roller catches (two screws top and bottom).

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Top pivot

6.4 ADJUSTMENT / CALIBRATION

6.4.1 REGULATOR ADJUSTMENT

Door handle

Bottom pivot

Figure 6.3.35

3) The stainless steel door outer can now be removed.

4) To replace the outer glass, simply remove and replace, taking care that the outer seals are positioned correctly around the glass edge.

Ensure when replacing that the side with

the ‘L’ mark is inside the door (not on the front of the oven). This ensures the correct operation of the ‘Low E’ glass.

5) Reassemble in reverse order and refit door to oven.

The appliance regulator is incorporated in the gas valve on these units. The regulator should be adjusted to set the burner gas pressure with the main burner running. To adjust:

1) Fit pressure gauge to pressure test point.

2) Remove screw cap on regulator of valve.

3) Turn on main burner and with main burner running, adjust regulator clockwise to increase pressure, and counter-clockwise to decrease pressure until correct setting is achieved.

Nat Gas (Not USA) 1.0kPa / 4.0”w.g / 10mbar

Nat Gas (USA only) 1.13kPa / 4.5”w.g

LPG/Prop/Butane 2.75kPa / 11.0”w.g / 35mbar

Spring adjustment cap

6.3.28 STAINLESS STEEL DOOR

- INNER GLASS

1) Remove the outer glass (refer 6.3.27).

2) Uncrimp the retaining angles and remove inner glass.

Retaining angles

Figure 6.3.36

3) Replace with new glass.

Ensure when replacing that the side with

the ‘L’ mark is inside the door (not inside the oven). This ensures the correct operation of the ‘Low E’ glass.

4) Reassemble and refit door to the oven.

Figure 6.4.1

To change the gas type regulator spring:

1) Fully unscrew and remove the spring adjustment cap.

2) Withdraw spring and replace as required.

3) Refit adjustment cap and reset pressure.

NOTE:

LPG/Propane Blue spring Natural Gas Green spring

6.4.2 THERMOSTAT CALIBRATION

IMPORTANT: IF THE OVEN

TE MP ER A TUR E N EED S T O B E INCREASED, ENSURE THAT THE THERMOSTAT IS IN THE ‘OFF’ POSITION BEFORE CARRYING OUT ADJUSTMENT. IF OVEN TEMPERATURE NEEDS TO BE DECREASED, ENSURE THERMOSTAT IS IN THE MAXIMUM TEMPERATURE POSITION BEFORE CARRYING OUT ANY ADJUSTMENT.

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6.4.4 DOOR MICROSWITCH ADJUSTMENT

Thermostat

Calibration nut

Figure 6.4.2

1) Remove thermostat knob by pulling it firmly away from control panel.

2) Adjust the calibration nut located at the base of the thermostat shaft.

Calibration

nut

Figure 6.4.3

To increase oven temperature, turn the

calibration nut anticlockwise.

To decrease oven temperature, turn the

calibration nut clockwise.

Adjustment of the calibration nut by 1°

angular will alter oven temperature by approximately 2°C (3.6°F).

3) Refit the knob to the thermostat..

4) Recheck the oven thermostat calibration.

5) Repeat procedure if necessary.

1) Open oven door.

2) Open control panel (refer 6.2.1).

3) With fingers, bend actuator arm of microswitch so that switch operates when door is in closed position.

Actuator

arm

Figure 6.4.4

6.4.5 REVERSING THE DOOR

If desired, a left hand hinged oven door can be changed to a right hand hinged door (or vice versa).

1) While supporting the door, undo the door

hinges from the oven. Remove the door.

2) The bottom right door catch plate should

now be transferred to the top left of the oven (a), and the top right door catch plate transferred to the bottom left of the oven (b).

6.4.3 CONFIRMING OVERTEMP CALIBRATION - UK UNITS ONLY

1) Place a digital thermometer inside the

oven.

2) Set the thermostat to maximum setting.

3) When thermostat cycles off check oven

temperature against dial setting. If overtemp has tripped (as indicated by power loss to unit) before oven has reached set temperature then the overtemp is out of calibration - replace, refer section 6.3.16.

4) If overtemp trips but oven temperature

has exceeded 330°C, then the thermostat is out of calibration - re-calibrate - refer section 6.4.2.

Revision 4/F3590

Figure 6.4.5

3) Secure the door hinges and oven door to the right hand side of the oven door opening.

4) If alignment of the door is necessary, the five screws along the bottom of the oven can be loosened, and the door moved a small amount to ensure that it is square with the oven. Tighten the screws when the correct door position is attained.

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5) If necessary the roller catches can be removed from the door (after removing handle on stainless steel doors) to adjust height settings for correction of door catch operation.

6.4.6 DOOR ROLLER CATCH

ADJUSTMENT

1) Open the door.

2) Remove the two screws securing the

roller catch to the door and withdraw the catch (on stainless steel doors the handle must first be removed).

3) Tighten or loosen the nuts on the catch

assembly to adjust the height of the roller.

Roller catch

6.4.8 HOLD TEMPERATURE ADJUSTMENT

1) Open control panel (refer 6.2.1) to gain access to the hold thermostat (located inside the control panel).

2) The hold temperature of the oven can be adjusted by turning the hold thermostat dial to the desired hold temperature.

Hold thermostat

Adjustment nuts

Figure 6.4.6

4) Refit catch to door and check operation. Adjust again if necessary.

6.4.7 DOOR ALIGNMENT

1) Loosen the five screws along the bottom edge of the oven front.

Figure 6.4.8

6.4.9 60 MINUTE TIMER ZERO POSITION ADJUSTMENT

1) Remove 60 minute timer knob by pulling it

firmly away from control panel.

2) Open control panel (refer 6.2.1). Loosen

two screws on control panel holding 60 minute timer.

Two screws

Figure 6.4.9

3) The timer can now be rotated a small

amount as required to ensure that the buzzer sounds at the zero position.

Five screws

Figure 6.4.7

2) Adjust the door position to ensure that it is square with the oven. Tighten the screws.

Revision 4/F3590

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6.4.10 BURNER INJECTOR ALIGNMENT

1) Remove burner access panel (refer 6.2.4).

2) To improve burner colour, an adjustment

of the gas/air mixture can be made by adjusting the ‘set’ of the burner mixer tube injector holder bracket. Using suitable hand tools, raise or lower the injector alignment slightly and determine best position by viewing running burner colour change.

3) In most cases this adjustment would only

be necessary after converting gas type or when burner has a significant lack of colour.

6.4.11 SPARK ELECTRODE ADJUSTMENT

The recommended gap settings for the ignition electrodes are given in the diagram below.

Enclosing screw cap

Gas control valve

Regulator spring

screw cap

Figure 6.4.10

4) Remove injector access panel from bottom front of unit to allow servicing of injector.

5) Unscrew and remove injector and replace with appropriate item.

Natural Gas ø 2.70 mm LP Gas ø 1.70 mm

Injector

FLAME SENSER

EARTH / GROUND

‘a’

‘b’

SPARK

‘a’ 18.3mm (+0.5mm, -0mm)

/4” (+1/64”, -0”)

‘b’ 4.5mm (+0.5mm, -0mm)

/16” (+1/64”, -0”)

6.4.12 GAS TYPE CONVERSION

1) Remove side service panel to allow access to gas control valve.

2) Unscrew and remove screw cap from regulator incorporated in gas control.

3) Remove regulator spring from control. Replace with correct spring supplied with conversion kit.

LP Gas - Blue Spring Colour Natural Gas - Green Spring Colour

Figure 6.4.11

6) Connect gas and electrical supplies.

7) Operate oven and adjust regulator to achieve correct pressure at pressure test point (front RH corner).

Nat Gas 4.0” w.c. (1.00 kPa) Nat Gas 4.5” w.c. (1.13 kPa) (110V only)

LP Gas 11.0” w.c. (2.75 kPa) LP Gas 14.0” w.c. (3.50 kPa) (UK only)

Pressure test point

Figure 6.4.12

8) Conduct full leak test of the converted oven prior to placing it into operation.

9) Refit service panels.

Revision 4/F3590

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7. CIRCUIT SCHEMATICS

7.1 220-240V 50Hz (UK ONLY)

THERMOSTAT

HOLD

DOOR

M'SWITCH

LIGHTSWATER

642

HOLD

T'STAT

HOLD

NONC

LIGHTS

HEATING

ROAST TIMER

SPARK

T11

T10

T12

T13

T14

T15

T16

IGNITION

T4T6T5

BOX

T2T1T3

SENSOR

WATER

INJECTOR

2 3

1Hr TIMER

TIME

WATER SOLENOID

GAS SOLENOIDS

BUZZER

4 3

POWER

OVER

TEMP

NEUTRAL

EARTH/GROUND

GAS REGULATOR

CONNECTIONS

(1/8" BSP)

BROWN

BLUE

YELLOW

GREEN

ELECTRICAL

BRASS ADAPTOR

1/2" BSP FEMALE

GASWATER

Revision 4/F3590

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7.2 100-120V 60Hz (USA, CANADA)

THERMOSTAT

HOLD

DOOR

M'SWITCH

HOLD

135

HOLD

T'STAT

HOLD

HEATING

WHITE

BLACK

BLUE

YELLOW

GND

TRANSFORMER

3Hr TIMER

SPARK

BOX

IGNITION

SENSOR

POWER

LIGHTSWATER

1Hr TIMER

LIGHTS

TIME

WATER

INJECTOR

WATER SOLENOID

GAS SOLENOIDS

BUZZER

(BLACK)

(RED)

(GREEN/YELLOW)

GAS REGULATOR

NEUTRAL

Revision 4/F3590

CONNECTIONS

(3/8 inch)

ELECTRICAL

10mm ID HOSE

WATER

1/2" NPT MALE

GAS

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EARTH/GROUND

Page 44

7.3 220-240V 50/60Hz (NOT UK)

THERMOSTAT

HOLD

DOOR

M'SWITCH

LIGHTSWATER

HOLD

642

135

NONC

HOLD

T'STAT

HOLD

LIGHTS

50Hz

HEATING

ROAST TIMER

SPARK

60Hz 3

T11

T12

T13

T14

T15

T16

T4T3T2

T10

IGNITION

BOX

SENSOR

WATER

INJECTOR

2 3

1Hr TIMER

TIME

WATER SOLENOID

GAS SOLENOIDS

BUZZER

4 3

POWER

NEUTRAL

EARTH/GROUND

GAS REGULATOR

CONNECTIONS

BROWN

10mm ID HOSE

GREEN

BLUE

YELLOW

ELECTRICAL

WATER

(3/8 inch)

1/2" BSP FEMALE

GAS

Revision 4/F3590

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8. ELECTRICAL WIRING DIAGRAMS

8.1 220-240V 50Hz (UK ONLY)

WATER

SOLENOID

OVEN LIGHT

50Hz

POWER SWITCH

T/STAT INDICATOR

T/STAT

BAKE TIMER

OVEN LIGHT

FAN MOTOR

BUZZER

INDICATOR

NEUTRAL

PHASE

EARTH

TERMINAL

BLOCK

T15 T16

BOX

IGNITION

T14 T13

T12

T11

T10 T9

T5 T4 T3

T2 T1

SOLENOIDS

GAS

ELECTRODES

IGNITION

FLAME SENSER

EARTH STUD

COM

DOOR

MICROSW

27 20

3hr TIMER

24 25

LIGHTS

STEAM

SWITCH

CONTROL PANEL

EARTH TAG

SWITCH

RELAY

23 24

11 45

TEMP

OVER

HOLD

T/STAT

BAKE TIMER

1 3

ROAST &

HOLD

Revision 4/F3590

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8.2 100-120V 60Hz (USA, CANADA)

WATER

SOLENOID

FAN MOTOR

208V

RED

240V

ORANGE

NEUTRAL

PHASE

EARTH

TERMINAL

BLOCK

GND

IGNITION BOX

35 29

110V

WHITE

BLACK

NEUTRAL

20 54

TRANSFORMER

BLUE

YELLOW

ELECTRODES

IGNITION

GAS

SOLENOIDS

FLAME SENSER

BUZZER

RELAY

23 24

11 45

HOLD

T/STAT

27 20

POWER SWITCH

T/STAT INDICATOR

T/STAT

BAKE TIMER

INDICATOR

BAKE TIMER

1 3

ROAST &

HOLD

3hr TIMER

24 25

COM

DOOR

LIGHTS

STEAM

SWITCH

EARTH STUD

MICROSW

CONTROL PANEL

EARTH TAG

SWITCH

Revision 4/F3590

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8.3 220-240V 50/60Hz (NOT UK)

WATER

SOLENOID

OVEN LIGHT

50Hz

60Hz

OVEN LIGHT

FAN MOTOR

PHASE

NEUTRAL

EARTH

TERMINAL

BLOCK

48332

T15

T13

T16

BOX

IGNITION

T12 T11 T10 T9

T6 T5 T4 T3

T2 T1

T14

SOLENOIDS

GAS

ELECTRODES

IGNITION

FLAME SENSER

51 48

EARTH STUD

BUZZER

POWER SWITCH

T/STAT INDICATOR

T/STAT

BAKE TIMER

INDICATOR

2423

RELAY

HOLD

T/STAT

BAKE TIMER

ROAST &

HOLD

3hr TIMER

2524

STEAM

SWITCH

COM

DOOR

MICROSW

CONTROL PANEL

EARTH TAG

SWITCH

LIGHTS

Revision 4/F3590

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9. SPARE PARTS

Controls

021473 Power Switch (220-240V) 021514 Power Switch (110V) 024774 Thermostat 020823 Knob - Thermostat / Bake Timer 020849 Neon Indicator (220-240V) 023857 Neon Indicator (110V) 011760 Bake Timer 011794 Buzzer (220-240V) 015822 Buzzer (110V) 021476 Roast ‘n Hold Switch (220-240V) 021515 Roast ‘n Hold Switch (110V) 011419 Roast ‘n Hold Timer (220-240V, 50Hz) 011983 Roast ‘n Hold Timer (220-240V, 60Hz) 015823 Roast ‘n Hold Timer (110V, 60Hz) 021472 Roast ‘n Hold Timer Knob 021534 Roast ‘n Hold Relay (220-240V) 021535 Roast ‘n Hold Relay (110V) 021474 Steam Switch 024773 Light Switch 018223 Hold Thermostat 024802 Microswitch 003002 Oven Lamp Glass 003434 Silk Gasket 013520 Oven Lamp Assembly - 40W Miniature Edison Screw (220-240V) 019482 Oven Lamp Assembly - 40W Miniature Edison Screw (110V) 013521 Oven Light Bulb (220-240V) 015825 Oven Light Bulb (110V) 019369K Over-temp Thermostat Kit (UK Only)

Motor

014672K Fan Motor Kit (220-240V) 015821K Fan Motor Kit (110V) 015598 Oven Fan

Steam System

020851 Water Solenoid (240V) 021617 Water Solenoid (110V) 021057 Spray Nozzle Assembly 021526 Water Inlet Elbow 021527 Washer

Revision 4/F3590

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Ignition System

023025 Ignition Box (220-240V - SIT) 023024 Ignition Box (110V, USA/Canada - Fenwall) 019370 Gas Control Valve (220-240V) 015626 Gas Control Valve (25V) SA1530 Complete Ignition Electrode Assembly 025071 Flame sensor worked (From S/N 246144) 022902 Flame Sensor Electrode (To S/N 246143) 024127 Spark / Earth Electrodes

Door

024784 Door Seal (Side) 024785 Door Seal (Top/Bottom) 020082 Top Hinge 020083 Bottom Hinge 024809 Roller Catch 017905 Door Bush

021468 Door Handle (G32M) 024599 Door Handle Bracket (G32M) 024844 Door Outer Glass (G32M) 002340 Door Inner Glass (G32M)

024713 Door Handle (G32MS) 023063 Door Glass (G32MS)

Racks

015575 Oven Side Rack - LH 015656 Fan Baffle 015168 Oven Rack

Gas Type Conversion Kits

025901 Natural and LPG Conversion Kit (From S/N 269436) 015910 Natural Gas to LPG Conversion Kit (To S/N 269435) 016403 LPG to Natural Gas Conversion Kit (To S/N 269435) 019379 Natural Gas to Propane Gas Conversion Kit (UK Only) 019378 Propane Gas to Natural Gas Conversion Kit (UK Only)

Stacking Kit

021545 Double Stacking Kit

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10. ACCESSORIES

OVEN RACKS (PART NO 015168)

COOKIE KIT—SIX TRAY OPTION (PART NOS 017156 & 017157)

DOUBLE STACKING KIT (PART NO 025013)

A25 STAINLESS STEEL STAND

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11.1 MAIN ASSEMBLY

17 16

11. PARTS DIAGRAMS

53 54

26 25

27 28

234

42 43 44 45

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Pos Part No. Description

1 024684 SIDE COVER PANEL 2 ---------- GEAR PLATE 3 014672 FAN MOTOR 015821 FAN MOTOR

(REFER SECTION 11.4) (220-240V) – c/w HEAT INSULATION DISC (110V) – c/w HEAT INSULATION DISC

4 014694 MOTOR MOUNTING PLATE 5 013520 OVEN LIGHT ASSEMBLY E14 013521 BULB 40W E14

(220-240V)

023216 OVEN LIGHT ASSEMBLY E26

(220-240V)

(110V)

003434 SILK GASKET 003002 LIGHT GLASS 6 024717 BAFFLE LOCATING BRACKET 7 010761 GROMMET ø1½" RUBBER 8 004950 SIDE GAS SERVICE ACCESS PANEL 9 024689 SIDE COVER MOUNTING BRACKET 10 024852 HEAT DEFLECTOR 11 019239 SNAP BUSH 19mm 12 021057 SPRAY NOZZLE 13 024702 WATER SOLENOID MOUNTING BRACKET 14 021619 REAR SERVICE PANEL 15 020851 WATER SOLENOID 021617 WATER SOLENOID 16 020869 CONNECTOR

(220-240V) (110V)

/8”F x ¼”COMP 17 021058 WATER TUBE / ELBOW ASSEMBLY 18 013215 BACKNUT 19 014031 OVEN BAFFLE STUD 20 004925 OVEN LINER ENAMELLED 21 015598 FAN 22 016245 HOOD SPACER 23 016241 VENT HOOD PLATE 24 041401 SCREW M6 x 35 ST/ST 25 041405 SCREW ½” x

/16” 26 003397 SPACER 27 004945 LINTEL ENAMELLED 024847 LINTEL ST/ST

(G32MS)

(G32M)

28 024672 LINTEL SUPPORT 29 024785 TOP/BOTTOM DOOR SEAL 30 024784 LEFT/RIGHT DOOR SEAL 31 013974 PHIAL GUARD 32 024803 ROLLER STRIKE TOP 33 024804 ROLLER STRIKE BOTTOM 34 004949 INJECTOR ACCESS PANEL ENAMELLED 35 015656 FAN BAFFLE RH 36 015575 SIDE RACK LH 37 020082 TOP HINGE

(ASSEMBLED WITH BUSH)

017905 BUSH 38 ---------- DOOR ASSEMBLY 39 020083 BOTTOM HINGE

(REFER SECTION 11.5)

(ASSEMBLED WITH BUSH)

017905 BUSH 40 004397 RADIATION BAFFLE ENAMELLED 41 ---------- CONTROL PANEL ASSEMBLY

(REFER SECTION 11.2)

42 021638 PIN CIRCLIP 43 013610 BUSH 44 044210 SPIRE CLIP 45 021637 MICROSWITCH BUTTON 46 024791 MICROSWITCH ROD 47 017929 DAMPER ROD CLIP 48 024802 MICROSWITCH 49 013977 INSULATOR 50 024584 MICROSWITCH BRACKET

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51 018724 LEG 6” (FROM S/N 251942(USA ONLY) 252730 (NON USA) 018723 LEG PLATE 015274 LEG ASSEMBLY 6” 015275 LEG TUBE WA – PLATED

(NOT ILLUSTRATED) (FROM S/N 251942(USA ONLY) 252730 (NON USA)

(UP TO S/N 251941(USA ONLY) 252729 (NON USA)

(UP TO S/N 251941(USA ONLY) 252729(NON USA)

010990 ADJUSTABLE FOOT 52 021526 WATER INLET ELBOW 021527 WATER INLET WASHER 53 019380 OVERTEMP BRACKET 54 019369K OVERTEMP THERMOSTAT KIT

(KIT INCLUDES 025400 OVERTEMP)

025400 OVERTEMP THERMOSTAT (UK ONLY) (FROM S/N 262066)

(UK ONLY)

(UK ONLY) (UP TO S/N 262065)

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11.2 CONTROL PANEL ASSEMBLY

11.2.1 G32M CONTROL PANEL ASSEMBLY

1817 19 20

13 12 1011

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Pos Part No. Description

1 004955 CONTROL PANEL BAKBAR °C 004956 CONTROL PANEL BLUE SEAL °C 2 021473 POWER SWITCH 021514 POWER SWITCH 3 020849 INDICATOR LIGHT 023857 INDICATOR LIGHT

(240V) (110V)

4 021472 THERMOSTAT KNOB 5 020823 TIMER KNOB 6 021476 ROAST N HOLD SWITCH 021515 ROAST N HOLD SWITCH

(240V) (110V)

7 021474 STEAM SWITCH 8 024773 LIGHT SWITCH 9 024694 CONTROL PANEL HOOK 10 018223 HOLD THERMOSTAT 11 021538 HOLD STAT BRACKET 12 018209 HOLD STAT LABEL 13 018224 HOLD STAT KNOB 14 021442 TIMER MOUNTING PANEL 15 011419 3 HOUR TIMER 011983 3 HOUR TIMER 015823 3 HOUR TIMER 16 021534 RELAY 021535 RELAY 17 011794 BUZZER 015822 BUZZER

(240V) (110V)

(240V 50Hz) (240V 60Hz) (110V 60Hz)

18 024703 BUZZER/RELAY BRACKET 19 011760 60 MINUTE TIMER 20 024774 THERMOSTAT

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11.2.2 G32MS CONTROL PANEL ASSEMBLY

1918 20 21

14 13 1112

4 6

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Pos Part No. Description

1 024805 CONTROL PANEL ST/ST 2 024778 OVERLAY BAKBAR °C 024779 OVERLAY BLUE SEAL °C 024777 OVERLAY MOFFAT °F 3 021473 POWER SWITCH 021514 POWER SWITCH 4 020849 INDICATOR LIGHT 023857 INDICATOR LIGHT

(240V) (110V)

5 021472 THERMOSTAT KNOB 6 020823 TIMER KNOB 7 021476 ROAST N HOLD SWITCH 021515 ROAST N HOLD SWITCH

(240V) (110V)

8 021474 STEAM SWITCH 9 024773 LIGHT SWITCH 10 024694 CONTROL PANEL HOOK 11 018223 HOLD THERMOSTAT 12 021538 HOLD STAT BRACKET 13 018209 HOLD STAT LABEL 14 018224 HOLD STAT KNOB 15 021442 TIMER MOUNTING PANEL 16 011419 3 HOUR TIMER 011983 3 HOUR TIMER 015823 3 HOUR TIMER 17 021534 RELAY 021535 RELAY 18 011794 BUZZER 015822 BUZZER

(240V) (110V)

(240V 50Hz) (240V 60Hz) (110V 60Hz)

19 024703 BUZZER/RELAY BRACKET 20 011760 60 MINUTE TIMER 21 024774 THERMOSTAT 50-320°C

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11.3 GAS ASSEMBLY

16 17

1514

1 2 3 4

Pos Part No. Description

1 004952 BURNER 2 032280 INJECTOR 2.80mm 032180 INJECTOR 1.80mm 032270 INJECTOR 2.70mm 032170 INJECTOR 1.70mm 032260 INJECTOR 2.60mm 032155 INJECTOR 1.55mm 3 SA1595 INJECTOR MOUNTING BRACKET ASSEMBLY 4 024156 FLEXTUBE 12” x

(NAT) (FROM S/N 269436) (NAT) (FROM S/N 269436) (NAT) (TO S/N 269435) (LPG) (TO S/N 269435) (UK NAT ONLY) (UK PROPANE ONLY)

/8” OD 5 024787 SADDLE 40mm 6 024765 GAS SOLENOID BRACKET 7 015313 MACK UNION 8 019370 GAS SOLENOID 015626 GAS SOLENOID

(240V) (110V UNITS ONLY)

9 019371 PRESSURE TEST POINT 10 015311 PLUG 11 015314 ADAPTOR ½”NPT x ½”BSP 12 025076 BALL VALVE 015310 BALL VALVE

(110V USA/CANADA ONLY)

/8” BSP (NON USA/CANADA)

/8” BSP (USA/CANADA ONLY)

(110V USA/CANADA ONLY)

13 015176 ELBOW ½” BSP 14 025071 FLAME SENSOR WORKED 022902 FLAME SENSOR ELECTRODE

(FROM S/N 246144)

(TO S/N 246143)

15 024127 SPARK ELECTRODES 16 025072 ELECTRODE MTG BRACKET 024106 ELECTRODE MOUNTING BRACKET

(FROM S/N 246144)

(TO S/N 246143)

17 024105 IGNITION ELECTRODE BRACKET 18 SA1530 IGNITION ELECTRODE COMPLETE ASSEMBLY

8 12 9

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11.4 GEAR PLATE ASSEMBLY

GEAR TRAY 240V

6 4

GEAR TRAY 110V

Pos Part No. Description

1 024853 GEAR TRAY 2 002441 INSULATOR 3 002138 CABLE CLAMP 4 013586 MAIN TERMINAL BLOCK 5 023025 IGNITION BOX SIT 6 023024 IGNITION BOX FENWAL 7 024851 TRANSFORMER 023373 TRANSFORMER 8 024800 TRANSFORMER BRACKET

(240V UNITS ONLY)

(110V UNITS ONLY) (110V UNITS ONLY)(FROM S/N 242773) (110V UNITS ONLY)(TO S/N 242772)

(110V UNITS ONLY)(TO S/N 242772)

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11.5 DOOR ASSEMBLY

11.5.1 G32M GLASS DOOR ASSEMBLY

78986

5 3 4 1 12 13

Pos Part No. Description

1 024809 ROLLER CATCH ASSEMBLY 2 004928 DOOR INNER ENAMELLED 3 024602 DOOR TRIM BOTTOM 4 090225 GLASS SEAL EXTRUSION (1.14m) 5 020083 BOTTOM HINGE ASSEMBLY 6 090200 GLASS SEAL EXTRUSION (1.74m) 7 024844 DOOR OUTER GLASS 8 004452 GLASS CLAMP ANGLE PAINTED 9 002340 DOOR INNER GLASS 10 024601 DOOR TRIM TOP 11 020082 TOP HINGE ASSEMBLY 12 021468 DOOR HANDLE 13 024599 DOOR HANDLE BRACKET

SA1586 DOOR COMPLETE

(EXCLUDING HANDLE & BRACKET)

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11.5.2 G32MS STAINLESS STEEL DOOR ASSEMBLY

Pos Part No. Description

1 024809 ROLLER CATCH ASSEMBLY 2 020083 BOTTOM HINGE ASSEMBLY 3 024605 GLASS CLAMP ANGLE 4 023063 DOOR WINDOW GLASS 5 090201 GLASS SEAL EXTRUSION (1.44m) 6 024845 DOOR OUTER PANEL 7 090200 GLASS SEAL EXTRUSION (1.44m) 8 020082 TOP HINGE ASSEMBLY 9 004957 DOOR INNER (ENAMELLED) 10 ---------- INSULATION 11 024713 DOOR HANDLE

SA1587 ST/ST DOOR COMPLETE

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12. SERVICE CONTACTS

AUSTRALIA

VICTORIA - MOFFAT PTY HEAD OFFICE AND MAIN WAREHOUSE 740 Springvale Road Tel (03) 9518 3888 Mulgrave VIC 3170 Fax (03) 9518 3838 Spare Parts Department Free Call 1800 337 963 Fax (03) 9518 3895 NEW SOUTH WALES - MOFFAT PTY Unit 8/142 James Ruse Drive Rosehill NSW 2142 Spare Parts Free Call 1800 337 963 Fax (03) 9518 3895 QUEENSLAND - MOFFAT PTY 30 Prosperity Place Geebung QLD 4034 Spare Parts Free Call 1800 337 963 Fax (03) 9518 3895

SOUTH AUSTRALIA - MOFFAT PTY 28 Greenhill Rd Tel (08) 8274 2116 Wayville SA 5034 Spare Parts Free Call 1800 337 963

WESTERN AUSTRALIA - MOFFAT PTY PO Box 689 Tel (08) 9305 8855 Joondalup Business Centre WA 6027 Spare Parts Free Call 1800 337 963

NATIONAL COVERAGE FOR 24 HOUR SERVICE OR MAINTENANCE DIAL

FREE CALL 1800 622 216 (AUSTRALIA ONLY)

CANADA

Lessard Agencies Limited Tel (416) 766 2764 PO Box 97 Fax (416) 760 0394 Stn “D” Free Call 1 888 537 7273 Toronto, ONT M6P 3J5

NEW ZEALAND

CHRISTCHURCH - MOFFAT LTD 16 Osborne St Free Call 0800 Moffat PO Box 10-001 (0800 663 328) Christchurch Spare Parts Tel (03) 389 1007 Fax (03) 389 1276

AUCKLAND - MOFFAT LTD 4 Waipuna Road Tel (09) 574 3150 Mt Wellington Fax (09) 574 3159 Auckland Spare Parts Free Call 0800 Moffat (0800 663 328)

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UNITED KINGDOM

BLUESEAL LTD Units 6-7 Mount St Business Park Tel 0121-327 5575 Nechells Fax 0121-327 9711 Birmingham B7 5QU England

UNITED STATES OF AMERICA

MOFFAT INC. 3765 Champion Blvd Winston-Salem Tel 1-800-551 8795 NC27115 Fax 336 661 9546

NATIONAL COVERAGE FOR SERVICE OR MAINTENANCE DIAL

FREE CALL 1800 551 8795 (USA ONLY)

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APPENDIX A. IGNITION BOX SPECIFICATIONS

A.1 110 VOLT G32 MODELS, USA / CANADA

Make Fenwal Type 2460D-506-023 Case Colour Grey Voltage 24Vac (18-28Vac) Ignition Trial Period 7 Seconds Pre-purge 0 seconds (3.5 second delay on initial start) Ignition Retries 2 (30 second purge) Re-ignition Attempts 2 Spark Rate 60 Hz Spark Voltage 25 kV Lockout Indicator At rear of casing 2 flashes indicates flame error. 3 flashes confirms lockout condition. Minimum Flame Current 0.7 µA

A.2 220-240 VOLT G32 MODELS

All Models

Make SIT Type 501 EFD Case Colour Black Voltage 230 Vac (220-240) Ignition Trial Period 10 Seconds Pre-purge 5 seconds Ignition Retries None Re-ignition Attempts 1 Spark Rate 15 Hz Spark Voltage 15 kV Lockout Indicator None Minimum Flame Current 0.5 µA

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Contents:

APPENDIX B. DOUBLE STACKING KIT

(Kits manufactured from March 2004)

1 Front Panel (2) 2 Side Support Rail (3) 1 Rear Panel (4) 1 Flue Duct (5) 1 Chimney (6) 1 Chimney Support (7) 31 Screws 8x3/8” 4 3/8” x 3/4” Bolts and Washers

NOTE:

2 Side Cover (1)

Food Grade RTV Silicone Sealant not supplied with kit

CAUTION: ENSURE UNIT IS ISOLATED FROM ELECTRICAL / GAS SUPPLIES

BEFORE SERVICING

Instructions:

Bottom Unit

NOTE:

1) Remove the six middle screws from top rear of bottom unit.

2) Unscrew the vent hood plate from the bottom oven. Remove and discard the hood plate and

3) Temporarily fit rear panel (4) and flue duck (5) to bottom unit (refer figure C), using two of the

4) Place the two side support rails (3) on the unit, ensure the large holes face up.

5) Fasten side support rails (3) to rear panel (4) two screws either side, ensure screws are

6) Remove plastic from front panel (2). Fasten to side support rails (3) (two screws either side),

7) Ensure stacking frame is square and mark the positions of the two bottom holes in the front

8) Remove the two screws holding stacking frame and flue duct (5) to rear of bottom unit and

9) Drill the eight holes (Ø3.5mm (1/8”)) as per marked in step 7.

10) Apply a small amount of food grade RTV silicone sealant to the flue duct flanges (5) and screw

11) Re-fit stacking frame, fit three screws at rear and two screws at front into the holes drilled.

Refer to figure C. (overleaf) for general layout of stacking kit.

spacer tubes. Replace the vent hood screws and completely screw in to secure the wrapper to the spacer tube.

existing screw holes at top rear of unit.

started from rear panel (4) side with screw tip pointing out (refer figure A).

ensure screw tips point in (refer figure B).

panel (2) and the six holes for the flue duct (5).

remove frame.

to the bottom unit with six screws along the top (drilled), and two at the rear.

Side

Support

Rail.

Screws

pointing out.

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Screws

pointing in.

Rear

Panel.

Figure A. Figure B.

-66-

Front

Panel.

Side

Support

Rail.

Page 66

Stacking

12) Remove legs from top unit, place on top of stacking frame, ensure front panel (2) is flush with sides of both units.

13) Reaching through the rectangular access holes in the side support rails (3) fasten the top unit to stacking frame with the four 3/8” bolts and washers, thread the bolt up into the foot holes of the top unit, ensure bolted through correct holes of the side support rails.

14) Remove plastic from side covers (1). Insert tab end into front panel (2) and fasten opposite end with two screws.

15) Position the chimney (6) on the rear of the units. Secure to the flue duct (5) and bottom unit with four screws. The holes in the bottom unit may need to be drilled, ø3.5mm (

16) Secure the top of the chimney (6) to the top unit with the chimney support (7) and two screws. These holes may need to be drilled, ø3.5mm (

17) Ensure that all screws on the stacking kit are tightened.

/8”).

2. 3.

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Figure C.

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APPENDIX C. DOUBLE STACKING KIT

(Kits manufactured before March 2004)

Kit contents (refer diagram overleaf):

Position Description Quantity

1 Shroud front 1 2 Shroud sides 2 3 Shroud rear 1 4 Chimney 1 5 Chimney support 1 6 Flue duct 1 7 8 9 9

A. Bottom Unit - G32/M/MS

• Ensure that 6” (150mm) legs are fitted to the bottom unit.

• Unscrew the vent hood plate from the bottom oven. Remove and discard the hood plate and spacer tubes. Replace the vent hood screws and completely screw in to secure the wrapper to the spacer tube.

/2” x 8A Pozi screws 20

/4” x 3/16” Phillips head screws 8

/8” x 3/8” Hex head screws 4

/8” Spring washers 4

THE ELECTRICAL AND GAS SUPPLIES TO BOTH OVENS MUST BE

DISCONNECTED PRIOR TO COMMENCEMENT

• Position the shroud rear (3) (refer to figure 1) on top of the bottom unit so that it is positioned correctly over the oven back. Position the flue duct (6) on the bottom unit so that it is positioned centrally in shroud rear flue cut-out and is flush with the oven back. Check that the oven vent is covered and mark the six hole positions (three down each side of the flue duct) on the oven wrapper.

• Drill six ø3.5mm (

• Apply a small amount of silicone sealant to the flue duct flanges and screw to the wrapper with six

/8”) holes in the oven wrapper where marked.

/2” x 8A pozi screws (7) along the top, and two at the rear.

B. Top Unit - G32/M/MS

• Tip the oven onto its back and remove the feet/legs screwed into the base.

• Assemble the four sides of the shroud (shroud front (1), shroud sides x2 (2), and shroud rear (3)) with the

/16” screws (8) as illustrated. Do not fully tighten the screws

until the ovens are stacked.

• Screw the shroud assembly to the base of the top oven using the

/8” hex head screws and washers (9) so that all faces of the shroud are flush with the sides of the oven base. Be sure to have the large flange of the shroud rear at the back of the oven.

C. Stacking the Ovens

• Remove three screws along the top rear of the bottom oven.

• With two or three persons, lift the top oven onto the bottom oven and position so that the down folds on the shroud sides and rear all butt hard up around the sides and rear of the oven wrapper.

• Secure the top unit into position by replacing the three screws along the rear of the oven.

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• Drill three ø3.5mm (1/8”) holes along each side of the bottom oven and secure with six

/2” x 8A pozi screws (7).

• Position the chimney (4) on the rear of the units. Secure to the flue duct (6) and bottom unit with four to be drilled, ø3.5mm (

• Secure the top of the chimney to the top unit with the chimney support (5) and two x 8A pozi screws (7). (These holes may need to be drilled, ø3.5mm (

/2” x 8A pozi screws (7). (The holes in the bottom unit may need

/8”)).

/2”

• Ensure that all screws on the stacking kit are tightened.

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Figure B.1

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APPENDIX D. MOTOR REPLACEMENT KIT

014672K Motor Kit 015821K Motor Kit

208—240V Models 110—120V Models

Contents:

1 Motor 3 Screw 5/32” 3 M4 Spring Washer 1 Insulation Disk

Instructions:

1) Open oven door and remove fan baffle, undo nut securing fan to shaft (Note: left hand thread,

NOTE: This motor may have a different motor frame mounting bracket than the original. Use supplied short screws and washers in place of existing long screws in this case.

2) Remove side service panel (four screws).

3) Remove the wires from the motor noting there positions.

4) Remove motor (three screws).

5) Check new motor is same voltage range as previous type, (i.e. 110-120V or 208 - 240V)

6) Fit new motor with the three screws and washers provided, ensure insulation disk is fitted

7) Reconnect wires as per original.

8) Refit fan and fan baffle from inside of oven.

SERVICE WORK ONLY TO BE CARRIED OUT BY QUALIFIED PERSONS

CAUTION: ENSURE UNIT IS ISOLATED FROM GAS / ELECTRICAL SUPPLIES

BEFORE SERVICING

turn clockwise to loosen) and remove fan.

between the motor and motor mounting plate.

(014672K only)

Screw and Washer

Fan Motor

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50Hz Terminal

60Hz Terminal

Figure A.

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Neutral

Motor Mounting Plate

Insulation Disk

Earth / Ground