turbofan Moffat E27 Service Manual
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turbofan Moffat E27 Service Manual

Convection oven
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E27 CONVECTION OVEN
SERVICE
MANUAL
Manual P/N M0ME27
Revision 1/F3563
September, 2001

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Summary of Contents for turbofan Moffat E27

  • Page 1 E27 CONVECTION OVEN SERVICE MANUAL Manual P/N M0ME27 Revision 1/F3563 September, 2001...

  • Page 2: Table Of Contents

    CONTENTS This manual is designed to take a more in depth look at the E27 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.
  • Page 3 PARTS DIAGRAM ......................31 11.1 Main Assembly 11.2 Control Panel Assembly SERVICE CONTACTS ....................35 APPENDIX A. DOUBLE STACKING KIT ................37 Revision 1/F3563...

  • Page 4: Specifications

    1. SPECIFICATIONS MODEL: E27 (37.2) (28.5) (1.75) (3.0) (31.1) (9.3) (15.6) (4.7) FRONT SIDE PLAN LEGEND - Electrical connection entry point Dimensions shown in millimetres. Dimensions in inches shown in brackets. Revision 1/F3563...
  • Page 5 LOCATION To ensure correct ventilation for the motor and controls the following minimum installation clearances are to be adhered to: Rear 25mm / 1” Left-hand side 25mm / 1” Right-hand side 25mm / 1” OVEN INTERNAL DIMENSIONS Width 695 mm / 27 ”...

  • Page 6: Installation

    2. INSTALLATION WARNING: THIS APPLIANCE MUST BE GROUNDED. WARNING: ALL INSTALLATION AND SERVICE REPAIR WORK MUST BE CARRIED OUT BY QUALIFIED PERSONS ONLY. It is most important that the oven is installed ELECTRICAL CONNECTION correctly and that the operation is correct E27 convection ovens are supplied with before use.

  • Page 7: Operation

    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.

  • Page 8: Explanation Of Control System

    SYSTEM with the thermostat to indicate when the element is on and the oven is heating. In the The E27 Turbofan convection ovens feature ‘Off’ position, the element relies on the multi-function operator controls for which a thermostatic control to prevent it switching on.

  • Page 9: Maintenance

    4. MAINTENANCE WARNING: ALL INSTALLATION AND SERVICE REPAIR WORK MUST BE CARRIED OUT BY QUALIFIED PERSONS ONLY. 4.1 CLEANING OVEN SEALS To remove, hold at their centre point and pull forward until they unclip. Remove side seals WARNING: ALWAYS TURN THE first, then top and bottom.

  • Page 10: Trouble Shooting Guide

    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”...
  • Page 11 FAULT POSSIBLE CAUSE REMEDY 60 MINUTE TIMER WILL NOT Timer faulty. Replace. TIME DOWN (Refer service section 6.3.6) 60 MINUTE TIMER Timer not set correctly. For timer settings below 20 INACCURATE BELOW 20 minutes, always rotate past 20 MINUTES minutes, then back to desired time.
  • Page 12 FAULT POSSIBLE CAUSE REMEDY DOOR DOES NOT CLOSE Tray in way of door. Correctly position tray in rack. Door seal obstruction. Correctly install door seal. (Refer service section 6.3.16) Door hinges worn. Replace. (Refer service section 6.3.18) Door hinge counter brackets Replace.

  • Page 13: Service Procedures

    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. FAULT DIAGNOSIS ......................16 6.1.1 Oven Does Not Operate / Start ................16 6.1.2 Fan Does Not Operate ..................

  • Page 14: 6.4 Adjustment / Calibration

    ADJUSTMENT / CALIBRATION ..................25 6.4.1 Thermostat Calibration ..................25 6.4.2 Door Microswitch Adjustment ................25 6.4.3 60 Minute Timer Zero Position Adjustment ............26 6.4.4 Buzzer Volume Adjustment ................. 26 Revision 1/F3563 -15-...

  • Page 15: Fault Diagnosis

    6.1 FAULT DIAGNOSIS Fan motor timer faulty With oven switched on, and door closed, ensure that the cams on the motor timer are 6.1.1 OVEN DOES NOT OPERATE / START rotating. 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.

  • Page 16: Oven Light Not Illuminating-Door Open

    The resistance should start low and quickly bottom terminal. If there is no voltage, then increase to infinity within 5-10 seconds. If the replace the switch. resistance does not increase at all, then the If voltage is correct, then check wiring to light. capacitor is shorted - replace.

  • Page 17: No Temperature Control

    Thermostat faulty 6.1.9 SLOW RECOVERY Set thermostat to 200°C or 400°F. Check the Thermostat out of calibration voltage out of terminal 1 on the thermostat. If there is no voltage (and there is voltage at Place an accurate digital thermometer probe in centre of oven.

  • Page 18: Access

    6.2 ACCESS 6.2.4 E27 CONTROL PANEL—REAR 6.2.1 CONTROL PANEL Power Switch 1) Undo one screw at bottom of control panel. Heating Indicator Thermostat Bake Time Up One Screw Figure 6.2.1 60 min Bake Timer 2) Pull out bottom of control panel and drop down to disengage tabs at top of control panel.

  • Page 19: Replacement

    6.3 REPLACEMENT Neon 6.3.1 LIGHT BULB / GLASS Wires 1) Remove baffle (refer 6.2.3). 2) Unscrew lamp cover. Figure 6.3.3 2) From back push neon through front of Lamp panel rotating clockwise. Cover 3) Push new neon in from front of panel, and reconnect wires.

  • Page 20: Bake Timer

    6.3.6 BAKE TIMER 6.3.8 RELAY 1) Remove service panel (refer 6.2.2). 1) Remove bake timer knob by pulling it firmly away from control panel. 2) Undo two screws securing relay to oven. 2) Open control panel (refer 6.2.1) and undo two screws securing timer.

  • Page 21: Fan

    4) Replace and re-assemble in reverse order. 6.3.10 FAN 5) Ensure wire connections are correct (fig 1) With baffle removed (refer 6.2.3) loosen 6.3.13) the grub screw on the hub of the fan. 6.3.12 MOTOR DIRECTION TIMER 1) Open control panel (refer 6.2.1). Grub Screw 2) Remove wires from the timer, noting their positions, and the wire to the timer motor...

  • Page 22: Outer Glass

    3) Uncrimp the retaining lugs of the window 6.3.14 OUTER GLASS spacer and remove the spacer and glass. 1) Open the oven door. 2) Lock hinges into position by rotating the hinge locking clip over the hinge locking notch. Hinge Locking Notch Retaining Lugs...

  • Page 23: Door Hinges

    6) Remove three screws securing lintel 6.3.18 DOOR HINGES support to oven and remove. 1) Remove outer glass (refer 6.3.14). Three screws 2) Undo two screws securing hinge assembly to oven door. Two Screws Figure 6.3.25 Figure 6.3.22 3) Withdraw hinge assembly and replace. 7) Remove wrapper.

  • Page 24: Adjustment / Calibration

    10) Prise open the insulation panel to allow 6.4 ADJUSTMENT / CALIBRATION access to the right hand counter bracket. Undo two screws securing bracket, and 6.4.1 THERMOSTAT CALIBRATION remove bracket. IMPORTANT: OVEN T E M P E R A T U R E N E E D S INCREASED, ENSURE...

  • Page 25: Minute Timer Zero Position Adjustment

    6.4.3 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 6.4.3 3) The timer can now be rotated a small amount as required to ensure that the buzzer sounds at the zero position.

  • Page 26: Electrical Schematics

    7. ELECTRICAL CIRCUIT SCHEMATIC Revision 1/F3563 -27-...

  • Page 27: Electrical Wiring Diagrams

    8. ELECTRICAL WIRING DIAGRAM Revision 1/F3563 -28-...

  • Page 28: Spare Parts

    9. SPARE PARTS PART NO DESCRIPTION CONTROLS 021473 SWITCH - POWER 023211 THERMOSTAT 021472 KNOB - THERMOSTAT 020823 KNOB - BAKE TIMER 020849 NEON INDICATOR 011760 BAKE TIMER 011794 BUZZER 021474 LIGHT SWITCH 024505 RELAY 003004 MICROSWITCH 003002 OVEN LAMP GLASS 013520 OVEN LAMP ASSEMBLY 013521...

  • Page 29: Accessories / Options

    10. ACCESSORIES 100 MM (FOUR INCH) FOOT OPTION OVEN RACKS (PART NO 24408) (PART NO 13048) 25 MM (ONE INCH) FOOT OPTION (PART NO 13908) A28 STAINLESS STEEL STAND DOUBLE STACKING KIT (PART NO 24419) Revision 1/F3563 -30-...

  • Page 30: Main Assembly

    11. PARTS DIAGRAMS 11.1 MAIN ASSEMBLY Revision 1/F3563 -31-...
  • Page 31 Part No. Description 004914 OVEN – ENAMELLED 024393 WRAPPER 024381 LINTEL SUPPORT 004913 LINTEL – ENAMELLED 024405 SIDE SEAL ASSEMBLY 023219 HINGE COUNTER BRACKET 024410 OVEN ELEMENT 2800W – 240V 024409 OVEN ELEMENT 2800W – 208V 024433 OVEN FAN 024398 BAFFLE BRACKET TOP 024507 BAFFLE BRACKET BOTTOM...
  • Page 32 003016 MOTOR MOUNTING PLATE 013520 OVEN LAMP ASSEMBLY 003434 SILK GASKET 013521 LAMP 40W 003002 LIGHT GLASS 024431 MOTOR 024478 MOTOR SHAFT SEAL 024432 CAPACITOR 3µF 003004 MICROSWITCH 013977 INSULATOR 023093 MICROSWITCH MOUNTING BRACKET 024399 VENT TUBE Revision 1/F3563 -33-...

  • Page 33: Control Panel Assembly

    11.2 CONTROL PANEL ASSEMBLY Part No. Description 004916 CONTROL PANEL °C – BAKBAR 004915 CONTROL PANEL °C – BLUE SEAL 004917 CONTROL PANEL °F – MOFFAT 021474 LIGHT SWITCH 020823 TIMER KNOB 020849 INDICATOR NEON 021472 THERMOSTAT KNOB 021473 POWER SWITCH 023211 THERMOSTAT 50-250°C (120-480°F) 011760...

  • Page 34: Service Contacts

    11. SERVICE CONTACTS AUSTRALIA VICTORIA 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 Unit 8/142 James Ruse Drive Rosehill NSW 2142 Spare Parts Free Call 1800 337 963...
  • Page 35 UNITED KINGDOM BLUESEAL LTD Units 6-7 Mount St Tel 0121-327 5575 Business Park 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) Revision 1/F3563 -36-...

  • Page 36: Appendix A. Double Stacking Kit

    APPENDIX A. DOUBLE STACKING KIT (24419) Kit Includes: Part No Vent Duct 24306 Vent Pipe 24307 Saddle Clamp 10023 Double Stack Front 04921 Double Stack Side 24509 Double Stack Rear 24510 " x 8A Pozi Pan Hd Screw 41045 ½” x 8 Phillips Head Black Screw 41046 Black Fibre Washer 45605...
  • Page 37 Stacking the Ovens (Refer figure A.2) With two persons, lift the top oven onto the bottom oven and position slightly forward so that the double stack front engages with the lintel support on the bottom oven, then slide the top oven back until the double stack rear locates over the bottom oven.

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