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Moffat Turbofan E311 Service Manual

Other manuals for Turbofan E311: Installation & Operation Manual
Manual is about: Max Series

Summary of Turbofan E311

  • Page 1

    Service manual e311 / e311ms convection oven max series s/n begins 258733 revision 4/f3535 september, 2004 manual p/n m0me311.

  • Page 2

    -2- revision 4/f3535 © moffat ltd, june 2004 warning: all installation and service repair work must be carried out by qualified persons only..

  • Page 3: Contents

    -3- revision 4/f3535 © moffat ltd, june 2004 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 f...

  • Page 4

    -4- revision 4/f3535 © moffat ltd, june 2004 12. Service contacts .................................................................................................................. 54 appendix a. Power relay upgrade kit....................................................................................

  • Page 5: 1.  Specifications

    -5- revision 4/f3535 © moffat ltd, june 2004 1 e 45 600 electrical entry 58 0 e 1 120 796 e 1 1. Specifications model: e311 - not us/can legend - electrical connection entry point front plan side dimensions shown in millimetres..

  • Page 6

    -6- revision 4/f3535 © moffat ltd, june 2004 electrical entry 5 8" 134" water entry 2358" 22 7 8" 3138" 158" 434" model: e311 - us/can only legend - electrical connection entry point - water entry - 9mm / 3 / 8 ” i.D male hose connection front plan side dimensions shown in inches..

  • Page 7

    -7- revision 4/f3535 © moffat ltd, june 2004 1 120 796 1 e 45 600 electrical entry 58 0 e e 1 model: e311ms not us/can legend - electrical connection entry point - water entry - 9mm / 3 / 8 ” i.D male hose connection front plan side dimensions shown in millimetres..

  • Page 8

    -8- revision 4/f3535 © moffat ltd, june 2004 5 8" 134" water entry 2358" electrical entry 22 7 8 " 3138" 158" 434" model: e311ms - us/can only legend - electrical connection entry point - water entry - 9mm / 3 / 8 ” i.D male hose connection front plan side dimensions shown in inches..

  • Page 9

    -9- revision 4/f3535 © moffat ltd, june 2004 location to ensure correct ventilation for the motor and controls the following minimum installation clearances are to be adhered to: top 200mm / 8” rear 25mm / 1” left-hand side 25mm / 1” right-hand side 25mm / 1” oven internal dimensions width 544 mm / ...

  • Page 10: 2.  Installation

    -10- revision 4/f3535 © moffat ltd, june 2004 should changing of the cord be necessary, gain access to the electrical connection terminal block and strain relief by removing the back panel (four screws). Water connection - us/can only a cold water supply should be fitted to the water inlet (9mm / 3 ...

  • Page 11

    -11- revision 4/f3535 © moffat ltd, june 2004 1 3 2 door handle installation 1. Open oven door. 2. Remove two screws (item 2). 3. Remove the two screws (item 3) from the handle (item 1). 4. Install the handle bracket through the slot on the door side. 5. Screw in the two screws (item 2) fully, then ...

  • Page 12: 3.  Operation

    -12- revision 4/f3535 © moffat ltd, june 2004 1 6 5 4 3 2 3.1 description of controls—not us/can models 1. Power depress to switch power on or off (switch illuminates when power is on). 2. Thermostat temperature range 50 - 280°c. Indicator illuminates when elements are cycling on to maintain set tem...

  • Page 13

    -13- revision 4/f3535 © moffat ltd, june 2004 1 7 6 5 4 3 2 1. Power depress to switch power on or off (switch illuminates when power is on). 2. Thermostat temperature range 120 - 550°f. Indicator illuminates when elements are cycling on to maintain set temperature. Broil position - the broil indica...

  • Page 14

    -14- revision 4/f3535 © moffat ltd, june 2004 3.3 explanation of control system the e311 turbofan convection oven features 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 functi...

  • Page 15

    -15- revision 4/f3535 © moffat ltd, june 2004 circulation fan will be turned off. The control panel grill indicator will illuminate when the thermostat is set to the grill position and will cycle on and off with the main heating indicator light. The e311 turbofan convection oven features a roast-and...

  • Page 16: 4.  Maintenance

    -16- revision 4/f3535 © moffat ltd, june 2004 important: this unit is not water proof. Do not use a water jet spray to clean interior or exterior of this unit. Warning: always turn the power supply off before cleaning. Exterior clean with a good quality stainless steel cleaning compound. Harsh abras...

  • Page 17

    -17- revision 4/f3535 © moffat ltd, june 2004 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. 12 months elements check that element resista...

  • Page 18: 5.  Trouble Shooting

    -18- revision 4/f3535 © moffat ltd, june 2004 5. Trouble shooting fault possible cause remedy the oven does not operate / start 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 faul...

  • Page 19

    -19- revision 4/f3535 © moffat ltd, june 2004 fault possible cause remedy continuous water out of oven water nozzle— us/can only with oven on only—electrical fault. (refer fault diagnosis 6.1.6) with oven on or off—fault with water valve. Correct electrical fault. Service or replace as required. (re...

  • Page 20

    -20- revision 4/f3535 © moffat ltd, june 2004 fault possible cause remedy bottom element not working top element not working (in bake mode— not grill / broil mode) element faulty (blown). (refer fault diagnosis 6.1.12) element faulty / blown. (refer fault diagnosis 6.1.13) replace. (refer service se...

  • Page 21: 6.  Service Procedures

    -21- revision 4/f3535 © moffat ltd, june 2004 section page no. 6.1 fault diagnosis ....................................................................................................................... 23 6.1.1 oven does not operate / start .............................................................

  • Page 22

    -22- revision 4/f3535 © moffat ltd, june 2004 6.3.16 elements ....................................................................................................................... 33 6.3.17 fan ...........................................................................................................

  • Page 23

    -23- revision 4/f3535 © moffat ltd, june 2004 6.1 fault diagnosis 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 wi...

  • Page 24

    -24- revision 4/f3535 © moffat ltd, june 2004 check voltage to the bottom terminal of the switch. If there is no voltage, then check wiring. 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 the...

  • Page 25

    -25- revision 4/f3535 © moffat ltd, june 2004 thermostat faulty set thermostat to 200°c or 400°f. Check the voltage out of terminal two 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 ele...

  • Page 26

    -26- revision 4/f3535 © moffat ltd, june 2004 element faulty / blown note: in bake mode (50—270°c or 100—550°f) the outer coil only of the top element assembly operates. The inner coil works only when in grill or broil mode. With thermostat on and heating check voltage across top element terminals a...

  • Page 27

    -27- revision 4/f3535 © moffat ltd, june 2004 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. 6.1.18 no hold indicator ‘roast ‘n hold’ switch faulty check if the switch latche...

  • Page 28

    -28- revision 4/f3535 © moffat ltd, june 2004 element guard lamp cover side rack four screws 6.2 access 6.2.1 control panel 1) open the oven door. Remove microswitch button by pulling straight off. 2) undo the two screws now visible. 1) undo the four screws holding the panel. 6.2.2 service (rear) pa...

  • Page 29

    -29- revision 4/f3535 © moffat ltd, june 2004 two screws 6.3 replacement 6.3.1 light bulb / glass 6.3.2 door microswitch 1) unscrew lamp cover. 1) remove service panel (refer 6.2.2). 2) remove two screws holding microswitch to bracket. 6.3.3 indicator neon light 1) with control panel open (refer 6.2...

  • Page 30

    -30- revision 4/f3535 © moffat ltd, june 2004 two screws two screws two screws two screws 6.3.6 buzzer 1) remove control panel (refer 6.2.1). 2) remove two screws holding buzzer bracket to panel. 6.3.7 bake timer 1) remove bake timer knob by pulling it firmly away from control panel. 2) open control...

  • Page 31

    -31- revision 4/f3535 © moffat ltd, june 2004 two screws 6.3.10 hold thermostat 8) re-assemble in reverse order. Figure 6.3.12 1) open control panel (refer 6.2.1) and undo two screws securing hold thermostat bracket. 2) transfer wires to new thermostat. 3) remove service panel (refer 6.2.2) and from...

  • Page 32

    -32- revision 4/f3535 © moffat ltd, june 2004 6.3.13 water solenoid (us/can only) 1) ensure water supply is turned off. 2) inside the oven remove the baffle (refer 6.2.3), then unscrew the water injection nozzle. 3) with the service panel removed (refer 6.2.2) remove the wires from the solenoid. 4) ...

  • Page 33

    -33- revision 4/f3535 © moffat ltd, june 2004 bottom element two screws top element one screw centre nut 6.3.18 motor 6.3.17 fan 6.3.16 elements 6.3.15 spray nozzle (us/can only) 1) inside the oven remove the lh side rack and baffle (refer 6.2.3), then unscrew the water injection nozzle. 1) with ser...

  • Page 34

    -34- revision 4/f3535 © moffat ltd, june 2004 2 screws two screws two screws 6.3.20 inner glass (e311) 6.3.19 outer glass (e311) 1) open door 2) undo two screws securing turbofan cover plate to oven, and remove cover plate. 1) remove the outer glass as above. Uncrimp the retaining lugs of the window...

  • Page 35

    -35- revision 4/f3535 © moffat ltd, june 2004 door seals 6.3.22 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 the open side of the seal facing downwards. Fit side seals with ope...

  • Page 36

    -36- revision 4/f3535 © moffat ltd, june 2004 thermostat shaft grill/broil switch i m p o r t a n t : i f t h e o v e n temperature needs to be increased, ensure that the thermostat is in the ‘off’ position before carrying out adjustment. If oven temperature needs to be decreased, ensure thermostat ...

  • Page 37

    -37- revision 4/f3535 © moffat ltd, june 2004 5) carefully remove two screws holding grill/ broil switch to thermostat. Hint: tape grill/broil switch assembly together before removal to prevent it from springing apart. 7) adjust the calibration nut located at the base of the thermostat shaft. To inc...

  • Page 38

    -38- revision 4/f3535 © moffat ltd, june 2004 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 ti...

  • Page 39

    -39- revision 4/f3535 © moffat ltd, june 2004 7. Electrical circuit schematics li g h t switc h 3 no nc 4 1 2 b a 4 7 1 6 3 9 powe r re la y 3 4 6 9 1 7 b a h o ld s w it ch wate r switc h (o pt io n on ly ) wate r so leno id (o ptio n on ly ) ho ld re l a y no e l2 n tim e up b buzze r 2 1 35 4 6 l...

  • Page 40

    -40- revision 4/f3535 © moffat ltd, june 2004 to serial number 232053.

  • Page 41

    -41- revision 4/f3535 © moffat ltd, june 2004 8. Electrical wiring diagrams from serial number 232054 3hr ti mer light ho l d buzzer 35 2 1 24 34 po w e r 52 2 4 33 1 3 t/ st at 22 11 12 27 5 p6 1 6 p5 2 26 31 30 29 15 49 up time 25 1hr ti me r 3 2 23 1 4 25 3 2 24 2 4 roast 17 3 1 3 4 17 14 12 13 3...

  • Page 42

    -42- revision 4/f3535 © moffat ltd, june 2004 dotted lines indicate wiring used only on models with water injection. To serial number 232053.

  • Page 43: 9.  Spare Parts

    -43- revision 4/f3535 © moffat ltd, june 2004 9. Spare parts part no description controls 021473 switch - power 024562 power relay (from s/n 232054) 024563 power relay upgrade kit (to s/n 232053) 017121 thermostat 020823 knob - thermostat / bake timer 020849 neon indicator 011760 bake timer 011794 b...

  • Page 44

    -44- revision 4/f3535 © moffat ltd, june 2004 racks 023255 oven side rack lh 023256 oven side rack rh 023254 oven rack 004874 bottom element guard 004595 fan baffle.

  • Page 45: 10.  Accessories

    -45- revision 4/f3535 © moffat ltd, june 2004 10. Accessories oven racks (part no 23254) 100 mm (four inch) foot option (part no 13048) a25 / a311 stainless steel stand 25 mm (one inch) foot option (part no 13908).

  • Page 46: 11.  Parts Diagrams

    -46- revision 4/f3535 © moffat ltd, june 2004 11. Parts diagrams 11.1 main assembly.

  • Page 47

    -47- revision 4/f3535 © moffat ltd, june 2004 pos part no. Description 1 010761 grommet (e311 from s/n 260862; e311ms) 2 025548 wrapper (e311 from s/n 260862; e311ms) 023242 wrapper (e311 up to s/n 260861) 3 090414 insulation 4 025549 cover panel (e311 from s/n 260862; e311ms) 023276 cover panel (e3...

  • Page 48

    -48- revision 4/f3535 © moffat ltd, june 2004 44 023254 oven rack 45 023256 oven side rack - rh 46 023255 oven side rack - lh 47 012787 water trough (us/can only) 48 004874 bottom element guard 49 014225 oven seal assembly - vertical 003028 vertical seal - 455mm 50 023257 oven seal assembly - horizo...

  • Page 49

    -49- revision 4/f3535 © moffat ltd, june 2004 11.2 control panel assembly 11.2.1 e311 control panel pos part no. Description 1 018224 hold thermostat knob 2 018223 hold thermostat 3 021538 hold thermostat bracket (affix 018209 label) 4 017121 thermostat 50-300 ºc 5 011760 timer - 1 hr 6 011419 timer...

  • Page 50

    -50- revision 4/f3535 © moffat ltd, june 2004 13 021537 buzzer mounting bracket 14 004873 control panel bakbar °c 004872 control panel blue seal °c 004729 control panel moffat °f 15 013610 door bush 16 024773 light switch - latching (usa/can only) (from s/n 258733) 021474 light switch - momentary (u...

  • Page 51

    -51- revision 4/f3535 © moffat ltd, june 2004 13 14 22 8 7 6 9 10 11 12 5 4 3 1 2 21 20 19 18 17 15 16 11.2.2 e311ms control panel pos part no. Description 1 011794 buzzer 2 021537 buzzer mounting bracket 3 017121 thermostat 4 011760 60 minute timer 5 021536 relay mounting bracket 6 024562 hold rela...

  • Page 52

    -52- revision 4/f3535 © moffat ltd, june 2004 11.3 glass door assembly (e311) pos part no. Description 1 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) 2 023615 top trim 3 023616 bottom trim 4 004992 door i...

  • Page 53

    -53- revision 4/f3535 © moffat ltd, june 2004 pos part no. Description 1 004992 door inner 2 023263 door glass 3 025498 glass clamp angle 4 090200 inner glass seal extrusion 5 090201 outer glass seal extrusion 6 090415 insulation 38mm 7 025504 door outer panel wa 8 025502 pivot bush 9 025501 door ca...

  • Page 54: 11.  Service Contacts

    -54- revision 4/f3535 © moffat ltd, june 2004 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 ...

  • Page 55

    -55- revision 4/f3535 © moffat ltd, june 2004 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 ...

  • Page 56

    -56- revision 4/f3535 © moffat ltd, june 2004 power switch mini-contactor kit (part no. 024563) includes: 1 x power relay 2 x screw - 8 x 3 / 8 truss 1 x 160mm black wire 1 x 180mm red wire 1 x 950mm red wire 1 x 1050 red wire assembly instructions: (the electrical supply must be disconnected) 1) re...

  • Page 57

    -57- revision 4/f3535 © moffat ltd, june 2004 circuit schematic (new wires shown in bold): figure 3.