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G1100 GAS CONVECTION
OVEN
SERVICE MANUAL
Revision 4/F3576 © Moffat Ltd, December 2004
-1-
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WARNING: ALL INSTALLATION AND SERVICE REPAIR WORK MUST BE CARRIED OUT BY QUALIFIED PERSONS ONLY. Revision 4/F3576 © Moffat Ltd, December 2004 -2-
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CONTENTS This manual is designed to take a more in depth look at the G1100 gas convection oven for the purpose of making the unit 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...............
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10. PARTS DIAGRAMS ...................................................................................................... 44 10.1 Main Assembly 10.2 Control Panel Assembly 10.3 Ignition Electrode Assembly 10.4 Gas Piping Assembly 11. SERVICE CONTACTS .................................................................................................. 51 APPENDIX A. DOUBLE STACKING INSTRUCTIONS......................................................... 53 APPENDIX B. IGNITION
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1. SPECIFICATIONS MODEL: G1100 1005 60 930 310 MWS MWS GAS GAS E E 1 1 135 70 FRONT SIDE E MWS 1 GAS PLAN LEGEND - Electrical connection entry point - Water entry - ¾” BSP hose connection - Gas connection entry point Dimensions shown in millimetres. Revision 4/F3576 © Moffat Ltd, December 2004 -5- 715 280 205 660 1390 50
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MODEL: G1100-2 1005 60 930 310 MWS MWS GAS GAS E E 1 1 MWS MWS GAS GAS E E 1 1 135 70 FRONT SIDE E MWS 1 GAS PLAN LEGEND - Electrical connection entry point - Water entry - ¾” BSP hose connection - Gas connection entry point Dimensions shown in millimetres. Revision 4/F3576 © Moffat Ltd, December 2004 -6- 285 280 205 245 230 1690 50
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ELECTRICAL SUPPLY SPECIFICATION LOCATION OPTIONS This oven must be installed in an area of adequate air supply. The following minimum 230-240 V AC, 50 Hz, 2.1 A, 1P+N+E clearances for air openings, servicing, 220 V AC, 60Hz, 2.1 A, 1P+N+E operation and installation are to be adhered to: ELECTRICAL PLUG SPECIFICATION Rear 100 mm REQUIREMENTS Left-hand side 100 mm Australia AS 2124, 10 Amp, 3 pin Right-hand side 300 mm New Zealand AS 2124, 10 Amp, 3 pin Top 1200 mm Othe
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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 LOCATION accordance with national installation codes This oven must be installed in an area of and in accordance with relevant national / adequate air supply. The following minimum local codes covering gas and fire safety. clearances for air openings, servicing, operation and installati
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screws securing the water access cover Units manufactured from S/N 275353. panel, and remove the panel. The gas valve has a regulator incorporated that is adjustable for Natural and LPG/ Fit ½" (13mm) flexible hose to the solenoid Propane gas's operating pressures. and secure with a hose clamp. Turn on the The operating pressures should be adjusted water supply to check for leaks. It may be to achieve the required settings, refer rating necessary to hold the water injection button in
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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 SWITCH Turn on to switch power on or off (indicator illuminates when power is on). 2. THERMOSTAT Temperature range 50 - 320°C. Indicator illuminates when burner is cycling ON to maintain set temperature. 1 3. BAKE TIMER 1 Hour bake timer. (Indicator illuminates when “time up” (0
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The temperature control of this oven is with a 3.2 EXPLANATION OF CONTROL capillary type thermostat which can be set to a SYSTEM required cooking temperature. The thermostat switch has a separate switch The G1100 Turbofan convection oven body assembled onto the front from the shaft features multi-function operator controls for assembly and when the thermostat is set to a which a correct understanding of their cooking temperature, the switch contacts turn operation is required bef
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Units from S/N 205337: If the ignition control The factory preset hold thermostat can be loses the burner flame during an on period, a adjusted as required to change the holding re-ignition attempt will be started automati- temperature if necessary. Refer Service cally. If this is unsuccessful the ignition will go section for this procedure. to lock-out mode. The Troubleshooting Guide (Section 5) should The G1100 Turbofan convection oven be used to identify any incorrect oven fe
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4. MAINTENANCE WARNING: ALL INSTALLATION AND SERVICE REPAIR WORK MUST BE CARRIED OUT BY QUALIFIED PERSONS ONLY. 4.1 CLEANING 4.2 ROUTINE PROCEDURES WARNING: ALWAYS TURN THE The following procedures should be carried POWER SUPPLY OFF BEFORE out at least once a year. CLEANING. Door chain Adjust if required and check for wear. IMPORTANT: THIS UNIT IS NOT Door catch WATER PROOF. Ensure that catch is adjusted such that the DO NOT USE A WATER JET SPRAY TO door closes properl
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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 The mains isolating switch on Turn on. OPERATE / START the wall, circuit breaker or fuses are “off” at the power board. The power switch on the oven is Turn on switch. Power indicator off. will illuminate. Incorrect electrical supply. Ensure electrical supply correct. (Refer fault diagnosis 6.1.1) Power
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FAULT POSSIBLE CAUSE REMEDY BURNER DOES NOT BURN Incorrect supply pressure. Check supply pressure. CORRECTLY (ROARS / LIGHTS BACK /INCORRECT Burner aeration incorrect. Adjust burner aeration slide. COLOUR) (Refer service section 6.4.3) Incorrect size or blocked Check injector size and clean or injector. replace if necessary. (Refer service section 6.3.16) Burner faulty. Replace burner. (Refer service section 6.3.15) PILOT FLAME YELLOW / Gas pressure incorrect. Check gas supp
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FAULT POSSIBLE CAUSE REMEDY NO WATER INJECTION / Water not turned on. Turn water on at water supply. STEAM Oven water nozzle blocked. Remove, clean or replace. (Refer service section 6.3.19) Fault with water valve. Service or replace as required. (Refer fault diagnosis 6.1.5) (Refer service section 6.3.20, 6.3.21) Steam switch faulty. Replace. (Refer fault diagnosis 6.1.5) (Refer service section 6.3.2) CONTINUOUS WATER OUT With oven on only—Electrical Correct electrical faul
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FAULT POSSIBLE CAUSE REMEDY SLOW RECOVERY Oven in ‘Roast ‘n Hold’ mode. Switch off ‘Roast ‘n Hold’. Overloading of oven. Reduce oven loading. Fan not working. Check fan operation. Thermostat out of calibration. Correct calibration. (Refer fault diagnosis 6.1.10) (Refer service section 6.4.4) Low gas pressure. Check and adjust if necessary. Blocked burner orifice. Clean. (Refer service section 6.3.16) Incorrect gas type. Check appliance gas type. NO THERMOSTAT HEATING
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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..............................................................................................................20 6.1.1 Oven Does Not Operate / Start............................................................................20 6.1.2 No Heat / Burner Not Working ..
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6.3.14 Pilot Burner Injector ............................................................................................30 6.3.15 Main Burner .........................................................................................................30 6.3.16 Main Burner Injector.............................................................................................30 6.3.17 Ignition Control Box............................................................................................
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Spark gap setting 6.1 FAULT DIAGNOSIS With spark electrode assembly removed, inspect spark rod and earth electrode settings, 6.1.1 OVEN DOES NOT OPERATE / START and spark gap settings. Incorrect electrical supply Between SPARK and EARTH (centre) 3-5mm Check that the voltage across phase and Between EARTH and main burner 7-10mm neutral (L1 and L2) terminals of terminal block Between SENSOR and EARTH 10-12mm is the voltage as stated on the unit’s electrical Between SENSOR and main
