Blue Seal turbofan E311 Service Manual
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Blue Seal turbofan E311 Service Manual

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E311 / E311MS
CONVECTION OVEN
SERVICE
MANUAL
Turbofan Convection Oven
© Moffat Ltd, April 2005
-1-
Revision 5/F3534

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Summary of Contents for Blue Seal turbofan E311

  • Page 1 E311 / E311MS CONVECTION OVEN SERVICE MANUAL Turbofan Convection Oven © Moffat Ltd, April 2005 Revision 5/F3534...
  • Page 2 WARNING: ALL INSTALLATION AND SERVICE REPAIR WORK MUST BE CARRIED OUT BY QUALIFIED PERSONS ONLY. Turbofan Convection Oven © Moffat Ltd, April 2005 Revision 5/F3534...

  • Page 3: Table Of Contents

    CONTENTS This manual is designed to take a more in depth look at the E311 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 4 SERVICE CONTACTS........................54 APPENDIX A. POWER RELAY UPGRADE KIT..................56 Turbofan Convection Oven © Moffat Ltd, April 2005 Revision 5/F3534...

  • Page 5: Specifications

    1. SPECIFICATIONS MODEL: E311 - NOT US/CAN ELECTRICAL ENTRY SIDE FRONT PLAN LEGEND - Electrical connection entry point Dimensions shown in millimetres. Turbofan Convection Oven © Moffat Ltd, April 2005 Revision 5/F3534...
  • Page 6 MODEL: E311 - US/CAN ONLY 31 3 8 " 23 5 8 " WATER ENTRY 1 5 8 " 4 3 4 " 8 " ELECTRICAL ENTRY 1 3 4 " FRONT SIDE PLAN LEGEND - Electrical connection entry point - Water entry - 9mm / ”...
  • Page 7 MODEL: E311MS NOT US/CAN ELECTRICAL ENTRY FRONT SIDE PLAN LEGEND - Electrical connection entry point - Water entry - 9mm / ” I.D male hose connection Dimensions shown in millimetres. Turbofan Convection Oven © Moffat Ltd, April 2005 Revision 5/F3534...
  • Page 8 MODEL: E311MS - US/CAN ONLY 31 3 8 " 23 5 8 " WATER ENTRY 1 5 8 " 4 3 4 " 8 " ELECTRICAL ENTRY 1 3 4 " FRONT SIDE PLAN LEGEND - Electrical connection entry point - Water entry - 9mm / ”...
  • Page 9 LOCATION To ensure correct ventilation for the motor and controls following minimum installation clearances are to be adhered to: 200mm / 8” Rear 25mm / 1” Left-hand side 25mm / 1” Right-hand side 25mm / 1” OVEN INTERNAL DIMENSIONS Width 544 mm / 21.4”...

  • Page 10: Installation

    Check that the available power present. supply is correct to that shown on the rating plate located on the right-hand side panel (refer figure 2.3). ELECTRICAL CONNECTION E311 convection ovens supplied with 208 V AC 60 Hz, 14.6 A, 3.2kW @ 208 V pre-fitted cords.
  • Page 11 (item 3). Ensure that they are tight. Figure 2.2 RATING PLATE LOCATION The rating plate for the E311 convection oven is located at the bottom left corner of the RH side panel. Rating Plate Figure 2.3...

  • Page 12: Operation

    6. LIGHT SWITCH Push switch to activate oven light. (Light illuminates while button latched in the down position) (From S/N 258733 “E311MS” models) (From S/N 260862 “E311” models). (Light illuminates while button depressed) (Up to S/N 260861). Turbofan Convection Oven ©...

  • Page 13: Description Of Controls-Us/Can Models Only

    7. LIGHT SWITCH Push switch to activate oven light. (Light illuminates while button latched in the down position) (From S/N 258733 “E311MS” models) (From S/N 260862 “E311” models). (Light illuminates while button depressed) (Up to S/N 260861). Turbofan Convection Oven ©...

  • Page 14: Explanation Of Control System

    The E311 Turbofan convection oven features moisture loss during cooking. multi-function operator controls for which a...
  • Page 15 At this point the temperature control is now maintained by the The E311 Turbofan convection oven features a hold thermostat as previously described. Roast-and-Hold system which can be used to cancel the hold circuit the Roast-and-Hold switch automatically set the oven to a fixed holding is turned Off.

  • Page 16: Maintenance

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

  • Page 17: Routine Procedures

    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 12 months properly. ELEMENTS Check that element resistances are correct to their rating 12 months (refer 6.3.13) WATER NOZZLE...

  • Page 18: 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 the Turn on. OPERATE / START wall, circuit breaker or fuses are “off”...
  • Page 19 FAULT POSSIBLE CAUSE REMEDY CONTINUOUS WATER OUT OF With oven on only—Electrical fault. Correct electrical fault. OVEN WATER NOZZLE— (Refer fault diagnosis 6.1.6) US/CAN ONLY With oven on or off—Fault with Service or replace as required. water valve. (Refer service section 6.3.13, 6.3.14) 60 MINUTE TIMER WILL NOT Timer faulty.
  • Page 20 FAULT POSSIBLE CAUSE REMEDY BOTTOM ELEMENT NOT Element faulty (blown). Replace. WORKING (Refer fault diagnosis 6.1.12) (Refer service section 6.3.16) TOP ELEMENT NOT Element faulty / blown. Replace. WORKING (IN BAKE MODE— (Refer fault diagnosis 6.1.13) (Refer service section 6.3.16) NOT GRILL / BROIL MODE) GRILL NOT WORKING Element faulty / blown.

  • Page 21: 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........................23 6.1.1 Oven Does Not Operate / Start ..................23 6.1.2 Fan Does Not Operate ....................

  • Page 22: 6.4 Adjustment / Calibration

    Fan..........................33 6.3.18 Motor..........................33 6.3.19 Outer Glass (E311)......................34 6.3.20 Inner Glass (E311)......................34 6.3.21 Inner Glass Seal (E311) ....................34 6.3.22 Door Seals ........................35 6.3.23 Door Pivot Bushes ......................35 6.3.24 Outer Glass (E311MS) ....................35 6.3.25 Inner Glass (E311MS) ....................

  • Page 23: Fault Diagnosis

    If there is no voltage then check the electrical 6.1 FAULT DIAGNOSIS connections of supply wiring. If voltage is correct then check the oven fan for 6.1.1 OVEN DOES NOT OPERATE / START free rotation. Remove any obstruction. If fan is free to spin and the voltage supply is cor- Incorrect electrical supply rect, then the motor is faulty—replace.

  • Page 24: Continuous Water Out Of Oven Water Nozzle-Us/Can Only

    Check voltage to the bottom terminal of the If no voltage at terminal 2 then timer is faulty— switch. If there is no voltage, then check wiring. replace. With switch depressed, check for voltage at top NOTE: Timer will continue terminal.

  • Page 25: No Temperature Control

    then the relay is faulty - replace. 6.1.10 NO TEMPERATURE CONTROL NOTE: The relay should only be energised when Thermostat faulty the ’Roast ’n Hold’ switch is depressed. With thermostat in off (vertical) position, the If there is voltage at terminal 1 then check all heating indicator should be off.

  • Page 26: Top Element Not Working (In Bake Mode-Not Grill / Broil)

    If there is no voltage then check voltage is If grill indicator is illuminated, but the top inner grill being supplied to bottom element from terminal 6 element is not functioning, check the voltage at on switch block mounted to the front of the the top inner element coils at rear of oven.

  • Page 27: No Hold Indicator

    the hold relay. If there is voltage at 7, but 6.1.19 HOLDING TEMPERATURE INCORRECT none at 4 (and the relay is energised) then relay is faulty - replace. If no voltage at 7 then check wiring. Hold thermostat faulty To Serial Number 232053: With the power switch on and illuminated, ‘Roast ‘n Hold’...

  • Page 28: Access

    6.2 ACCESS 6.2.3 BAFFLE 1) Remove trays, racks, element guard and left hand side rack. 6.2.1 CONTROL PANEL 2) Undo lamp cover. 1) Open the oven door. Remove microswitch button by pulling straight off. Lamp 2) Undo the two screws now visible. Cover Microswitch Button...

  • Page 29: Replacement

    6.3 REPLACEMENT Neon Wires 6.3.1 LIGHT BULB / GLASS 1) Unscrew lamp cover. Lamp Cover 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. 6.3.4 POWER / ROAST / LIGHTS / WATER Figure 6.3.1 SWITCHES...

  • Page 30: Buzzer

    6.3.6 BUZZER 6.3.8 ROAST TIMER 1) Remove control panel (refer 6.2.1). 1) Remove roast timer knob by pulling it firmly away from control panel. 2) Remove two screws holding buzzer bracket to panel. 2) Open control panel (refer 6.2.1) and undo two screws securing timer.

  • Page 31: Hold Thermostat

    5) Withdraw old thermostat phial through rear of 6.3.11 HOLD RELAY (FROM S/N 232054) oven. 1) Open control panel (refer 6.2.1) 6) Remove fibreglass sleeve from old thermostat transfer wires from old hold relay to new and fit it to replacement thermostat. relay.

  • Page 32: Water Solenoid-Us/Can Only

    6.3.13 WATER SOLENOID (US/CAN ONLY) 6.3.14 WATER SOLENOID CLEANING (US/CAN ONLY) 1) Ensure water supply is turned off. Units manufactured from S/N 258733 2) Inside the oven remove the baffle (refer 6.2.3), then unscrew the water injection 1) Disconnect water supply from the water nozzle.

  • Page 33: Spray Nozzle-Us/Can Only

    6.3.15 SPRAY NOZZLE (US/CAN ONLY) 6.3.17 FAN 1) Inside the oven remove the LH side rack and 1) With service panel and baffle removed (refer baffle (refer 6.2.3), then unscrew the water 6.2.2 and 6.2.3) undo the centre nut. injection nozzle. NOTE: LH thread - Turn clockwise to loosen.

  • Page 34: Outer Glass (E311)

    Refit outer glass as above. Figure 6.3.29 6.3.21 INNER GLASS SEAL (E311) 5) Remove two screws in top trim and two 1) Remove the door inner glass (refer 6.3.20).

  • Page 35: Door Seals

    3) Place door on bench with door outer facing 6.3.22 DOOR SEALS up. Lift door outer up removing it from door 1) Open oven door. assembly. Remove outer glass. 2) To remove, hold at their centre point and pull 4) To replace, clean inner and outer glass, forward until they unclip ensure the silicone rubber seal has not been displaced and refit door outer.

  • Page 36: Adjustment / Calibration

    6.4 ADJUSTMENT / CALIBRATION 6.3.27 INNER GLASS SEAL (E311MS) 1) Remove the door inner glass (refer 6.3.25). 2) The inner glass seal can now be removed and 6.4.1 THERMOSTAT CALIBRATION replaced. NOTE: When fitting new seal, ensure join is at top of door.

  • Page 37: Door Microswitch Adjustment

    Thermostat 6.4.2 DOOR MICROSWITCH ADJUSTMENT 1) Open oven door. 2) Remove service panel (refer 6.2.2). 3) With fingers, bend actuator microswitch so that switch operates when door is in closed position. Actuator Arm Figure 6.4.3 5) Carefully remove two screws holding Grill/ Broil switch to thermostat.

  • Page 38: Hold Temperature Adjustment

    6.4.4 HOLD TEMPERATURE ADJUSTMENT 1) The hold temperature of the oven can be adjusted by turning the hold thermostat dial to the desired hold temperature. This dial is located inside the control panel. Hold Thermostat Dial Figure 6.4.9 6.4.5 60 MINUTE TIMER ZERO POSITION ADJUSTMENT 1) Remove 60 minute timer knob by pulling it firmly away from control panel.

  • Page 39: Electrical Schematics

    7. ELECTRICAL CIRCUIT SCHEMATICS From Serial Number 232054 Turbofan Convection Oven © Moffat Ltd, April 2005 -39- Revision 5/F3534...
  • Page 40 To Serial Number 232053 Turbofan Convection Oven © Moffat Ltd, April 2005 -40- Revision 5/F3534...

  • Page 41: Electrical Wiring Diagrams

    8. ELECTRICAL WIRING DIAGRAMS From Serial Number 232054 Dotted lines indicate wiring used only on models with water injection. Turbofan Convection Oven © Moffat Ltd, April 2005 -41- Revision 5/F3534...
  • Page 42 To Serial Number 232053 Dotted lines indicate wiring used only on models with water injection. Turbofan Convection Oven © Moffat Ltd, April 2005 -42- Revision 5/F3534...

  • Page 43: Spare Parts

    002990 Microswitch 003002 Oven Lamp Glass 003434 Silk Gasket 013521 Oven Lamp - 40W Miniature Edison Screw (E311) 014218 Oven Lamp - 25W Miniature Edison Screw (E311MS) MOTOR & ELEMENTS 003113 Oven Top Element 208 Volts 003114 Oven Bottom Element 208 Volts...
  • Page 44 RACKS 023255 Oven Side Rack LH 023256 Oven Side Rack RH 023254 Oven Rack 004874 Bottom Element Guard 004595 Fan Baffle Turbofan Convection Oven © Moffat Ltd, April 2005 -44- Revision 5/F3534...

  • Page 45: Accessories / Options

    10. ACCESSORIES OVEN RACKS (PART NO 23254) 100 MM (FOUR INCH) FOOT OPTION (PART NO 13048) 25 MM (ONE INCH) FOOT OPTION (PART NO 13908) A25 / A311 STAINLESS STEEL STAND Turbofan Convection Oven © Moffat Ltd, April 2005 -45- Revision 5/F3534...

  • Page 46: Parts Diagram

    11. PARTS DIAGRAMS 11.1 MAIN ASSEMBLY Turbofan Convection Oven © Moffat Ltd, April 2005 -46- Revision 5/F3534...
  • Page 47 025548 WRAPPER (E311 FROM S/N 260862; E311MS) 023242 WRAPPER (E311 UP TO S/N 260861) 090414 INSULATION 025549 COVER PANEL (E311 FROM S/N 260862; E311MS) 023276 COVER PANEL (E311 UP TO S/N 260861) 023277 COVER PANEL PLATE 011412 MICROSWITCH BRACKET 011389...
  • Page 48 DOOR ASSEMBLY (REFER SECTION 11.3 & 11.4) ---------- CONTROL ASSEMBLY (SEE SECTION 11.2) 025502 DOOR BUSH (E311 FROM S/N 260862; E311MS) (ALSO USED ON CONTROL PANEL PIVOT) 013610 DOOR BUSH (E311 UP TO S/N 260861) (ALSO USED ON CONTROL PANEL PIVOT)

  • Page 49: Control Panel Assembly

    11.2 CONTROL PANEL ASSEMBLY 11.2.1 E311 CONTROL PANEL Part No. Description 018224 HOLD THERMOSTAT KNOB 018223 HOLD THERMOSTAT 021538 HOLD THERMOSTAT BRACKET (AFFIX 018209 LABEL) 017121 THERMOSTAT 50-300 ºC 011760 TIMER - 1 Hr 011419 TIMER - 3 Hr (240V 50 Hz)
  • Page 50 021537 BUZZER MOUNTING BRACKET 004873 CONTROL PANEL BAKBAR °C 004872 CONTROL PANEL BLUE SEAL °C 004729 CONTROL PANEL MOFFAT °F 013610 DOOR BUSH 024773 LIGHT SWITCH - LATCHING (USA/CAN ONLY) (FROM S/N 258733) 021474 LIGHT SWITCH - MOMENTARY (USA/CAN ONLY) (UP TO S/N 258732)
  • Page 51 THREE HOUR TIMER - 60Hz 021442 TIMER MOUNTING PANEL 021538 HOLD THERMOSTAT BRACKET 018223 HOLD THERMOSTAT 025544 CONTROL PANEL WA (BAKBAR / BLUE SEAL) 025503 CONTROL PANEL WA (MOFFAT) 025531 CONTROL PANEL OVERLAY (BAKBAR - °C) 025532 CONTROL PANEL OVERLAY (BLUE SEAL °C) 025530 CONTROL PANEL OVERLAY (MOFFAT - °F)

  • Page 52: Glass Door Assembly

    11.3 GLASS DOOR ASSEMBLY (E311) Part No. Description 025502 DOOR BUSH (FROM S/N ******) (ALSO USED ON CONTROL PANEL PIVOT) 013610 DOOR BUSH (UP TO S/N ******) (ALSO USED ON CONTROL PANEL PIVOT) 023615 TOP TRIM 023616 BOTTOM TRIM 004992...
  • Page 53 11.4 ST/ST DOOR ASSEMBLY (E311MS only) Part No. Description 004992 DOOR INNER 023263 DOOR GLASS 025498 GLASS CLAMP ANGLE 090200 INNER GLASS SEAL EXTRUSION 090201 OUTER GLASS SEAL EXTRUSION 090415 INSULATION 38mm 025504 DOOR OUTER PANEL WA 025502 PIVOT BUSH 025501 DOOR CATCH PLATE 025499...

  • Page 54: Service Contacts

    11. 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...
  • Page 55 UNITED KINGDOM BLUESEAL LTD Units 6-7 Mount St Business Park Tel 0121-327 5575 Mount Street Fax 0121-327 9711 Nechells 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) Turbofan Convection Oven...

  • Page 56: Appendix A. Power Relay Upgrade Kit

    APPENDIX A. POWER RELAY UPGRADE KIT Kit (part no. 024563) includes: Power relay Screw - 8 x truss 160mm black wire 180mm red wire 950mm red wire 1050 red wire Assembly Instructions: (THE ELECTRICAL SUPPLY MUST BE DISCONNECTED) 1) Remove the rear service panel. 2) Mark and drill 2x ø3.5mm holes as per figure 1.
  • Page 57 Circuit schematic (new wires shown in bold): Figure 3 Turbofan Convection Oven © Moffat Ltd, April 2005 -57- Revision 5/F3534...

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