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Revision 4/F3591

©

Moffat Ltd, August 2004

SERVICE MANUAL

E1100 ELECTRIC

CONVECTION OVEN

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Summary of Contents for E1100

Page 1: ... 1 Revision 4 F3591 Moffat Ltd August 2004 SERVICE MANUAL E1100 ELECTRIC CONVECTION OVEN ...

Page 2: ... 2 Revision 4 F3591 Moffat Ltd August 2004 WARNING ALL INSTALLATION AND SERVICE REPAIR WORK MUST BE CARRIED OUT BY QUALIFIED PERSONS ONLY ...

Page 3: ... and what effects will result SECTION PAGE NO 1 SPECIFICATIONS 5 2 INSTALLATION 8 3 OPERATION 10 3 1 Description of Controls 3 2 Explanation of Control System 4 MAINTENANCE 13 4 1 Cleaning 4 2 Routine Procedures 5 TROUBLE SHOOTING GUIDE 14 6 SERVICE PROCEDURES 17 6 1 Fault Diagnosis 6 2 Access 6 3 Replacement 6 4 Adjustment Calibration 7 CIRCUIT SCHEMATIC 32 8 ELECTRICAL WIRING DIAGRAM 33 9 SPARE ...

Page 4: ... 4 Revision 4 F3591 Moffat Ltd August 2004 ...

Page 5: ... MWS 3 E 205 1005 190 310 ELECTRICAL ENTRY MWS 3 E 1200 1390 660 930 75 50 3 E WATER ENTRY MWS 1 SPECIFICATIONS MODEL E1100 Dimensions shown in millimetres FRONT SIDE LEGEND Electrical connection entry point Water entry BSP hose connection PLAN ...

Page 6: ...85 770 1690 230 930 75 50 730 E 3 WATER ENTRY E 3 MWS MWS ELECTRICAL ENTRY 205 MWS E 3 E 3 1005 310 MWS MWS E 3 MODEL E1100 2 Dimensions shown in millimetres LEGEND Electrical connection entry point Water entry BSP hose connection FRONT SIDE PLAN ...

Page 7: ... 100 mm Left hand side 100 mm Right hand side 300 mm OVEN INTERNAL DIMENSIONS Width 730 mm Height 490 mm Depth 600 mm Oven Volume 0 21 m OVEN RACK SIZE Width 710 mm Depth 520 mm ELECTRICAL SUPPLY SPECIFICATION 400 415 V AC 50 Hz 10 4 kW 3P N E 380V AC 60Hz 10 4kW 3P N E WATER SUPPLY CONNECTION Max Pressure 550 kPa 5 5 bar 80 psi Min Pressure 100 kPa 1 0 bar 15 psi ...

Page 8: ...o be adhered to 2 INSTALLATION WARNING THIS APPLIANCE MUST BE EARTHED GROUNDED Rear 100mm 4 Left hand side 100mm 4 Right hand side 300mm 12 NOTE 300mm is required at the right hand side of the oven to allow access to the circuitry and gas connections If space is limited then a minimum of 100mm 4 clearance should be allowed for provided that the oven can be moved to gain access Position the oven in...

Page 9: ...It may be necessary to hold the water injection button in for a few seconds to remove air from the system after initial instalment IMPORTANT MAXIMUM INLET WATER PRESSURE IS 550 kPa 80 psi BEFORE USE Operate the oven for about 1 hour at 200 C to remove any fumes or odours which may be present RATING PLATE LOCATION The rating plate for the E1100 convection oven is located at the bottom left of the r...

Page 10: ...hile the button is depressed 1 POWER SWITCH Turn on to switch power on or off indicator illuminates when power is on 5 ROAST TIMER 3 Hour roast timer Indicator illuminates when time up 0 reached and product held at 75 C 7 LIGHT SWITCH Push switch to activate lights Lights illuminate while button depressed 4 ROAST N HOLD SWITCH Turn on to activate ROAST N HOLD function Switch illuminates when ON 3 ...

Page 11: ...enoid 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 thermostat switch has a separate switch body assembled onto the front from the shaft assembly and when the thermostat is set to a cooking temperature the switch contacts turn on the oven fan The s...

Page 12: ... 3 hour timer and restores the feed to the main oven thermostat The Hold indicator light below 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 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 G...

Page 13: ... care not to damage the fan which has been factory balanced SIDE RACKS Remove all oven racks Remove the side racks by lifting out of the rack support brackets LAMP GLASS To remove glasses unscrew anti clockwise To replace screw in clockwise 4 MAINTENANCE OVEN DOOR GLASS Clean with conventional glass cleaners 4 1 CLEANING WARNING ALL INSTALLATION AND SERVICE REPAIR WORK MUST BE CARRIED OUT BY QUALI...

Page 14: ...iagnosis 6 1 2 Door microswitch faulty Refer fault diagnosis 6 1 2 Thermostat fan switch faulty Refer fault diagnosis 6 1 2 Fan motor faulty Refer fault diagnosis 6 1 2 Wiring Turn thermostat on Close door Adjust microswitch Refer service section 6 4 6 Replace microswitch Refer service section 6 3 17 Replace thermostat Refer service section 6 3 5 Replace Refer service section 6 3 11 Check and tigh...

Page 15: ...ect electrical fault Service or replace as required Refer service section 6 3 15 6 3 16 60 MINUTE TIMER WILL NOT TIME DOWN 60 MINUTE TIMER INACCURATE BELOW 20 MINUTES 60 MINUTE TIMER NO TIME UP BUZZER Timer faulty Timer not set correctly Zero time up position not set correctly Buzzer faulty Refer fault diagnosis 6 1 8 Timer not switching on buzzer Refer fault diagnosis 6 1 8 Replace Refer service ...

Page 16: ...CORRECT Roast n Hold switch not switched on No power to timer timer faulty Refer fault diagnosis 6 1 11 Roast n Hold switch faulty Refer fault diagnosis 6 1 11 Faulty indicator Refer fault diagnosis 6 1 12 Faulty timer Refer fault diagnosis 6 1 12 Hold thermostat set temperature incorrect Hold thermostat faulty Refer fault diagnosis 6 1 13 Turn on switch Switch will illuminate Correct electrical f...

Page 17: ...ct 21 6 2 ACCESS 22 6 2 1 Control Panel 22 6 2 2 Fan Baffle 22 6 2 3 Right Hand Access Panel 22 6 2 4 Right Hand Side Panel 22 6 2 5 Bottom Lintel 22 6 2 6 Control Panel Rear 23 6 3 REPLACEMENT 23 6 3 1 Power Roast Switches 23 6 3 2 Lights Water Switches 23 6 3 3 Time Up Roast Indicators 23 6 3 4 Power Heating Indicators 24 6 3 5 Thermostat 24 6 3 6 60 Minute Timer 24 6 3 7 3 Hour Timer 24 6 3 8 B...

Page 18: ... Assembly 28 6 3 21 Door Assembly 29 6 3 22 Top Bearing Channel 29 6 4 ADJUSTMENT CALIBRATION 30 6 4 1 Door Chain 30 6 4 2 Door Ball Catch 30 6 4 3 Thermostat Calibration 30 6 4 4 Hold Temperature Adjustment 31 6 4 5 60 Minute Timer Zero Position Adjustment 31 6 4 6 Door Microswitch Adjustment 31 ...

Page 19: ...n c If no voltage then manually activate microswitch by bending the activator arm If microswitch cannot be activated then it is faulty replace If the microswitch can be manually activated then it should be adjusted 6 1 3 NO HEAT ELEMENTS NOT WORKING FAN OPERATES BUT NO HEATING INDICATOR No power to thermostat With the thermostat ON and the roast switch OFF check for power at terminal 1 of the ther...

Page 20: ...unctioning and oven water nozzle is not blocked then remove water solenoid and fittings and check for blockages 6 1 9 NO TEMPERATURE CONTROL TEMPERATURE OVERRUN Thermostat faulty Set thermostat to 50 C Check voltage at terminal 2 on the thermostat As the oven heats up the thermostat contacts should open cutting power to terminal 2 of the thermostat If not then the thermostat is faulty replace 6 1 ...

Page 21: ...ted Roast n Hold switch on and illuminated and the roast 180 minute timer set to hold check that the hold indicator is illuminated With a cold oven ie room temperature check that the oven burners are on If burners are not operating check the voltage at terminal 2 of the hold thermostat If there is no voltage then check wiring If the voltage is correct and the thermostat is adjusted above oven temp...

Page 22: ...rews from the top of the lintel and remove the bottom door catch 2 screws 2 The control panel can now hinge open along its right hand edge Figure 6 2 1 3 Withdraw the baffle from the oven Figure 6 2 2 6 2 4 RIGHT HAND SIDE PANEL 1 Remove the four screws along the top four screws along the bottom and the four screws from the rear of the right hand side panel One screw 6 2 3 RIGHT HAND ACCESS PANEL ...

Page 23: ...connect the wires from the faulty switch 3 Press in the locking tabs at top and bottom of the switch and from rear push switch through front of control panel 6 3 3 TIME UP ROAST INDICATORS 1 Open the control panel refer 6 2 1 2 Disconnect the wires from the faulty indicator Figure 6 2 6 4 Replace and reassemble in reverse order 4 Replace and reassemble in reverse order Figure 6 3 1 Locking tabs Fi...

Page 24: ...the front of the control panel and remove the timer from the rear of the control panel 1 Open the control panel refer 6 2 1 2 Remove the knob from the timer 3 Unscrew the locking nut on the front of the timer and remove the timer from the rear of the control panel 6 3 4 POWER HEATING INDICATORS 6 3 5 THERMOSTAT 6 3 6 60 MINUTE TIMER 6 3 7 3 HOUR TIMER 4 Replace and reassemble in reverse order Figu...

Page 25: ...old thermostat knob by pulling away from bracket 3 Undo the two screws securing the hold thermostat to the bracket 4 Remove fan baffle from inside oven refer 6 2 2 5 Remove the two screws securing the thermostat phial mounting bracket to the RH wall of the oven Feed the thermostat phial through into the control cavity 3 Replace the bulb 40 watt miniature Edison screw Figure 6 3 12 Figure 6 3 13 1 ...

Page 26: ... 4 2 Disconnect wires from the contactor noting their positions 3 Remove contactor from the mounting bracket 4 Replace contactor and re assemble in reverse order Figure 6 3 16 1 Remove the fan baffle refer 6 2 2 2 Unscrew the water injection nozzle 3 Clean or replace nozzle and reassemble in reverse order 6 3 14 WATER INJECTION NOZZLE Figure 6 3 19 6 3 13 ELEMENTS Contactor 3 Remove the fan baffle...

Page 27: ...16 WATER SOLENOID CLEANING 3 Remove the valve assembly 4 Clean the valve assembly removing all dirt and grime from the valve seat 5 Reassemble the valve assembly and solenoid Figure 6 3 23 Figure 6 3 24 Two Screws Figure 6 3 20 4 Remove the wires from the solenoid and disconnect the mains water connection 5 Remove the two screws securing the solenoid bracket to the oven rear and remove the valve a...

Page 28: ...er 6 4 7 3 Remove the two screws on the door front 4 Lift off the door outer making sure that glass spacer and undamaged glass pane do not fall out 5 Remove all glass fragments the glass spacer and the undamaged pane NOTE The seals on the door inner and outer must be replaced with new ones if damaged 6 Replace the broken pane and refit both clean panes either side of the spacer 7 Reassemble in rev...

Page 29: ...el support brackets two screws each to allow the bottom bearing channel to be removed Support bracket Bearing channel Figure 6 3 33 6 Undo the two screws securing the bottom pivot plate Figure 6 3 34 Two screws 7 Remove the door assembly from the oven replace and reassemble in reverse order 8 After fitting the new door the door chain and ball catch will have to be adjusted to ensure that the doors...

Page 30: ...nd door closes slightly ahead of the left hand door To make the left hand door close earlier tighten the left hand turnbuckle and loosen the right hand turnbuckle To make the right hand door close earlier tighten the right hand turnbuckle and loosen the left hand turnbuckle 4 Tighten the locknuts 5 Replace bottom lintel Figure 6 4 2 6 4 3 THERMOSTAT CALIBRATION IMPORTANT IF THE OVEN TEMPERATURE NE...

Page 31: ... 8 Turn on power and then recheck oven thermostat calibration 9 Repeat procedure if necessary NOTE Thermostat cycling span should be 15 C or 27 F Figure 6 4 6 6 4 4 HOLD TEMPERATURE ADJUSTMENT 1 Open control panel refer 6 2 1 2 The hold temperature of the oven can be adjusted by turning the hold thermostat dial to the desired hold temperature Figure 6 4 7 6 4 5 60 MINUTE TIMER ZERO POSITION ADJUST...

Page 32: ... 32 Revision 4 F3591 Moffat Ltd August 2004 7 CIRCUIT SCHEMATIC ...

Page 33: ... MAINS SW DOOR MICRO SW WATER SOLENOID LIGHT LIGHT FAN MOTOR AZ A E NC COM NO 3 2 1 5 1 4 3 2 4 1 5 2 6 3 2 1 2 1 5 EARTH EARTH STUD 3 4 4 6 7 7 8 9 9 10 10 11 11 12 13 14 15 14 15 16 16 17 17 18 18 19 19 20 21 21 23 23 24 24 25 26 27 27 13 33 33 34 35 36 37 38 39 40 41 41 42 L1 L2 L3 N 1 1 1 1 1 1 2 2 2 2 2 2 3 29 32 32 31 31 30 30 30 40 A2 1 3 5 13 2 4 6 14 ELEMENTS 6 5 5 28 28 A1 29 ...

Page 34: ...tch 011928 Microswitch 011794 Buzzer 018223 Pre set Hold Thermostat 015966 Contactor OVEN 011036 Oven Base without Drain Hole 017824 Oven Rack 017822 LH Oven Rack Support 017823 RH Oven Rack Support 004069 Fan Baffle 017961 Phial Guard 010002 Element 240V 025763 Element 220V 017831 Element Gasket 016800 Fan Puller Spares Only DOORS 002137 Glass Pane 090200 Door Glass Seal 011005 Ball Catch 011786 ...

Page 35: ...3 Door assembly Refer section 10 3 4 011810 Bottom shroud 5 017410 Leg 6 010990 Foot adjustable 7 013455 Leg tray 013708 Leg tray bracket 8 Control panel assembly refer section 10 2 9 017968 Service panel 10 017958 RH side panel 11 017557 Vent chimney 10 PARTS DIAGRAMS 10 1 MAIN ASSEMBLY 10 9 3 1 2 11 8 4 5 7 6 ...

Page 36: ...2 015563 THERMOSTAT KNOB 50 320 ºC 3 011760 TIMER 1 Hr 4 015560 TIMER KNOB 1 Hr 5 011419 TIMER 3 Hr 240V 50 Hz 011983 TIMER 3 Hr 220V 60 Hz 6 015567 TIMER KNOB 3 Hr 7 013543 START SWITCH 8 013542 INDICATOR LIGHT 9 013528 PILOT LIGHT 10 013891 LIGHT SWITCH ORANGE BUTTON 11 012895 WATER SWITCH BLUE BUTTON 12 004654 CONTROL PANEL ...

Page 37: ... 37 Revision 4 F3591 Moffat Ltd August 2004 10 3 DOOR ASSEMBLY ...

Page 38: ...0626 DOOR OUTER L H 5 018081 HANDLE END CAP 6 018131 HANDLE 7 018138 HANDLE STIFFENER 8 002137 GLASS 9 GLASS SEAL 10 004287 GLASS SPACER 11 INSULATION 12 011005 BALL CATCH LOCKNUT 13 018789 BALL CATCH PLATE 14 014138 DOOR ADJUSTING ROD ASSEMBLY 017966 CHAIN 24 LINKS AT 3 8 PITCHING 010145 CHAIN LINK 014012 TURNBUCKLE 014011 CHAIN ADJUSTING ROD ...

Page 39: ...8 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 ...

Page 40: ...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 ...

Page 41: ...olt the new legs onto the bottom unit APPENDIX A DOUBLE STACKING INSTRUCTIONS 4 Place the top unit onto the bottom unit and remove the screws along the back joining edge of both units See diagram Screw on rear stacking plate 5 The top oven drain hole must be blocked up Fit the bung provided To achieve a permanent seal we recommend also using some high temp silicone sealant Figure A 1 Double Stacki...

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