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Moffat Turbofan G32MS Service Manual Download Page 16

-16- 

Revision 6/F3590 

© 

Moffat Ltd, February 2005 

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 

WATER NOZZLE 

Check for liming in water nozzle. 

12 months 

HT LEAD / ELECTRODE 

Check for deterioration. 

12 months 

BURNER PRESSURE 

Check that the unit is operating at the correct operating 
pressure. 

12 months 

Summary of Contents for Turbofan G32MS

Page 1: ...SERVICE MANUAL G32MS CONVECTION OVEN Revision 6 F3587 February 2005 Manual P N M0MG32MS...

Page 2: ...2 Revision 6 F3590 Moffat Ltd February 2005 WARNING ALL INSTALLATION AND SERVICE REPAIR WORK MUST BE CARRIED OUT BY QUALIFIED PERSONS ONLY...

Page 3: ...t effects will result SECTION PAGE NO 1 SPECIFICATIONS 5 2 INSTALLATION 8 3 OPERATION 11 3 1 Description of Controls 3 2 Explanation of Control System 4 MAINTENANCE 15 4 1 Cleaning 4 2 Routine Procedu...

Page 4: ...rol Panel Assembly 11 3 Gas Assembly 11 4 Gear Plate Assembly 11 5 Door Assembly 12 SERVICE CONTACTS 63 APPENDIX A Ignition Box Specifications 65 APPENDIX B Double Stacking Kit Kits manufactured from...

Page 5: ...AS GAS 28 28 28 32 2 3 35 20 13 8 2 1 SPECIFICATIONS MODEL G32M LEGEND Electrical connection entry point Water entry BSP hose connection Gas connection entry point BSP female not USA Canada NPT female...

Page 6: ...E 510 E 1 MWS 350 900 810 E 1 MWS GAS GAS E 1 MWS 28 32 35 3 2 2 8 13 20 LEGEND Electrical connection entry point Water entry BSP hose connection Gas connection entry point BSP female not USA Canada N...

Page 7: ...18 Depth 660 mm 26 ELECTRICAL SUPPLY SPECIFICATION OPTIONS 110 120 V AC 60 Hz 2 0 A 1 Phase 220 240 V AC 50 Hz 0 7 A 1 Phase 220 240 V AC 60 Hz 0 7 A 1 Phase ELECTRICAL PLUG SPECIFICATION REQUIREMENT...

Page 8: ...2 INSTALLATION WARNING THIS APPLIANCE MUST BE GROUNDED Report any deficiencies to the distributor who supplied the oven Fit the legs to the oven Check that the available power and gas supply is corre...

Page 9: ...operation The appliance combination gas valve is fitted with an internal regulator for adjusting the operating pressure To access remove appropriately marked side service panel from bottom right side...

Page 10: ...ate for the G32M and G32MS convection ovens is located at the rear of the RH side panel Rating Plate Figure 2 3 RATING PLATE LOCATION Units manufactured from July 2002 The rating plate for the G32M an...

Page 11: ...en the burner is cycling ON to maintain set temperature 3 Bake Timer 1 Hour bake timer Indicator illuminates when time up 0 reached and buzzer sounds 4 Roast n Hold Depress switch to activate Roast n...

Page 12: ...hermostat which can be set to a required cooking temperature The control panel indicator light above the thermostat knob cycles On and Off with the thermostat to indicate when the gas burners are on a...

Page 13: ...ating pressure The G32M and G32MS Turbofan convection ovens feature a Roast and Hold system which can be used to automatically set the oven to a fixed holding temperature at the end of a timed cooking...

Page 14: ...er Service section for this procedure The Troubleshooting Guide Section 5 should be used to identify any incorrect oven operation On correct identification of the operating fault the Troubleshooting G...

Page 15: ...e front edge up and lift out SIDE RACKS To remove lift front top to disengage and slide rack forward To replace slide top rear slot in rack onto rear stud then engage front keyhole on front stud OVEN...

Page 16: ...s DOOR PIVOT BUSHES Check for wear 12 months DOOR CATCH Ensure that catch is adjusted such that the door closes properly 12 months WATER NOZZLE Check for liming in water nozzle 12 months HT LEAD ELECT...

Page 17: ...or Burner ignition spark faulty Refer fault diagnosis 6 1 2 Burner flame not being sensed Refer fault diagnosis 6 1 2 Ignition transformer faulty 110V models only Refer fault diagnosis 6 1 2 Ignition...

Page 18: ...and inspect for obstructions Refer service section 6 3 22 Check for obstructions Check for obstructions Check injector alignment Refer service section 6 4 9 BURNER NOISY BURNER BLOWBACK BURNER BACKFI...

Page 19: ...ection 6 3 13 Service or replace as required Refer service section 6 3 11 6 3 12 Replace Refer service section 6 3 4 CONTINUOUS WATER OUT OF OVEN WATER NOZZLE With oven on only Electrical fault Refer...

Page 20: ...O THERMOSTAT HEATING INDICATOR Indicator faulty Refer fault diagnosis 6 1 13 Replace Refer service section 6 3 3 ROAST TIMER 180 MINUTE WILL NOT TIME DOWN NO HOLD INDICATOR HOLDING TEMPERATURE INCORRE...

Page 21: ...ion 6 3 25 Fit correctly Refer installation section Adjust Refer service section 6 4 5 Replace Refer service section 6 3 26 DOOR SEAL LEAKS Door seal damaged Door seal incorrectly fitted Door catch se...

Page 22: ...old Indicator 30 6 1 16 Holding Temperature Incorrect 30 6 2 ACCESS 30 6 2 1 Control Panel 30 6 2 2 Service Panel Side Panel 30 6 2 3 Burner Access Panel 31 6 2 4 Manual Isolating Valve Gas Control Va...

Page 23: ...Stainless Steel Door Inner Glass 39 6 4 ADJUSTMENT CALIBRATION 39 6 4 1 Regulator Adjustment 39 6 4 2 Thermostat Calibration 39 6 4 3 Confirming Overtemp Thermostat Calibration UK Units Only 40 6 4 4...

Page 24: ...t and correct as necessary Spark gap too large see the following section Cracked spark rod ceramic or carbon build up HT leads to spark electrode and earth broken deteriorated HT leads between ignitio...

Page 25: ...and blue Check voltage at yellow and blue lead connections on ignition control box With thermostat on calling for heat voltage should be 24Vac 4Vac across yellow and blue leads If not check transform...

Page 26: ...and if still not correct ignition box requires replacement Ignition box faulty 220 240 Volt models only The direct spark ignition control boxes used on 220 240 volt model G32 s are operated from dire...

Page 27: ...1 then the relay is faulty replace Thermostat faulty Set thermostat to 200 C or 400 F Check the voltage out of terminal 1 on the thermostat If there is no voltage then the thermostat is faulty replace...

Page 28: ...coil then check wiring and steam switch refer 6 1 7 6 1 9 60 MINUTE TIMER NO TIME UP BUZZER Buzzer faulty With timer in zero position check the buzzer at side of control panel inside for voltage acros...

Page 29: ...nal 5 on underside of the 180 minute timer Check that one lead of timer motor is con nected to terminal five of timer and the other lead is connected to neutral of Roast n Hold switch If voltage at te...

Page 30: ...Hold thermostat faulty With the power switch on and illuminated Roast n Hold switch on and illuminated and the roast 180 minute timer set to hold check that the hold indicator is illuminated With hol...

Page 31: ...dicator Roast n Hold Switch Roast n Hold Time Up Indicator Roast Timer Steam Switch Light Switch Hold Thermostat Bake Timer Hold Relay 6 2 3 BURNER ACCESS PANEL 6 2 4 MANUAL ISOLATING VALVE GAS CONTRO...

Page 32: ...ulb out of fitting 3 Screw in replacement bulb 4 Ensure seal fitted Screw lamp cover into holder with baffle fitted do not over tighten Lamp covers Figure 6 3 1 3 Transfer wires to new switch and re a...

Page 33: ...new timer 4 Withdraw old timer and insert new timer securing with screws 5 Replace knob 3 Transfer wires to new timer 4 Withdraw old timer and insert new timer securing with screws 5 Replace knob Two...

Page 34: ...ATER SOLENOID CLEANING 1 Disconnect water supply from the water solenoid 2 Remove the sieve from the valve assembly by pulling firmly away from the assembly with a pair of pliers 3 Clean the sieve rem...

Page 35: ...ssemble in reverse order Centre nut 6 3 16 OVERTEMP THERMOSTAT UK UNITS ONLY 1 Open control panel refer 6 2 1 2 To reset firmly press reset button Figure 6 3 18 4 Remove wires from overtemp Figure 6 3...

Page 36: ...crew screws nuts securing electrodes and remove from bracket 5 Replace and reassemble in reverse order Two screws Figure 6 3 23 6 3 17 24 VOLT TRANSFORMER USA CANADA UNITS ONLY 1 Remove the right hand...

Page 37: ...trol valve 7 Remove the gas valve and connected piping by drawing out through the side service panel 8 Replace and reassemble in reverse order Figure 6 3 24 Mack union Burner injector Figure 6 3 25 6...

Page 38: ...it ensuring that the silicone rubber seals cover the outer edges of the glass Refit the trim panels Figure 6 3 33 6 3 25 DOOR SEALS 1 Open oven door 2 To remove hold at their centre point and pull for...

Page 39: ...1 Fit pressure gauge to pressure test point 2 Remove screw cap on regulator of valve 3 Turn on main burner and with main burner running adjust regulator clockwise to increase pressure and counter cloc...

Page 40: ...ertemp is out of calibration replace refer section 6 3 16 4 If overtemp trips but oven temperature has exceeded 330 C then the thermostat is out of calibration re calibrate refer section 6 4 2 6 4 4 D...

Page 41: ...the zero position 6 4 6 DOOR ROLLER CATCH ADJUSTMENT 1 Open the door 2 Remove the two screws securing the roller catch to the door and withdraw the catch on stainless steel doors the handle must firs...

Page 42: ...1 Remove side service panel to allow access to gas control valve 2 Unscrew and remove screw cap from regulator incorporated in gas control 3 Remove regulator spring from control Replace with correct...

Page 43: ...OR CONNECTIONS ELECTRICAL YELLOW BROWN GREEN BLUE NEUTRAL EARTH GROUND B 2 OVER TEMP 1 POWER SPARK INJECTOR WATER SOLENOID SENSOR T11 IGNITION BOX T2 T1 T3 T4 T6 T5 T10 T9 T15 T16 T12 T13 T14 HEATING...

Page 44: ...M SWITCH DOOR C T STAT 4 5 M 2 1 3Hr TIMER HEATING 6 3 1 3 5 7 HOLD 4 HOLD 4 2 8 6 2 HOLD 3 1 2 THERMOSTAT HOLD 1 2 1 4 3 2 1 IGNITION BOX 2 1 2 1 NO 1Hr TIMER GAS SOLENOIDS 1 2 NPT MALE 10mm ID HOSE...

Page 45: ...m ID HOSE GAS 3 8 inch WATER GAS REGULATOR CONNECTIONS YELLOW ELECTRICAL BROWN GREEN BLUE NEUTRAL EARTH GROUND B POWER WATER SPARK INJECTOR WATER SOLENOID GAS SOLENOIDS SENSOR T11 IGNITION BOX T4 T3 T...

Page 46: ...12 13 48 48 49 1 2 1 OVER TEMP 1 2 2 1 56 56 55 55 HOLD T STAT 4 2 7 17 LIGHTS SWITCH 1 2 CONTROL PANEL EARTH TAG 47 DOOR MICROSW COM ROAST HOLD 23 4 16 6 STEAM SWITCH 7 1 2 24 25 5 1 2 3 6 28 8 3hr T...

Page 47: ...GHTS SWITCH 1 2 CONTROL PANEL EARTH TAG 47 DOOR MICROSW COM ROAST HOLD 23 4 16 6 STEAM SWITCH 7 1 2 24 25 5 1 2 3 6 28 8 3hr TIMER 27 11 1 3 46 28 27 20 21 2 1 12 8 EARTH STUD 18 17 NO NC 49 13 48 50...

Page 48: ...48 52 49 50 E 8 27 28 20 21 HOLD T STAT 2 1 FLAME SENSER 51 10 26 BAKE TIMER 2 6 5 3 5 1 45 44 9 T STAT BAKE TIMER INDICATOR 4 42 22 10 43 21 1 2 42 POWER SWITCH T STAT INDICATOR 4 41 22 12 1 2 40 3 4...

Page 49: ...110V 60Hz 021472 Roast n Hold Timer Knob 021534 Roast n Hold Relay 220 240V 021535 Roast n Hold Relay 110V 021474 Steam Switch 024773 Light Switch 018223 Hold Thermostat 024802 Microswitch 003002 Oven...

Page 50: ...021468 Door Handle G32M 024599 Door Handle Bracket G32M 024844 Door Outer Glass G32M 002340 Door Inner Glass G32M 024713 Door Handle G32MS 023063 Door Glass G32MS Racks 015575 Oven Side Rack LH 01565...

Page 51: ...Ltd February 2005 10 ACCESSORIES OVEN RACKS PART NO 015168 DOUBLE STACKING KIT G32M or G32MS PART NO 025739 FROM S N 270991 PART NO 025013 TO S N 270990 COOKIE KIT SIX TRAY OPTION PART NOS 017156 0171...

Page 52: ...fat Ltd February 2005 11 PARTS DIAGRAMS 11 1 MAIN ASSEMBLY 38 41 39 37 36 27 28 40 2 3 4 42 43 44 45 5 5 50 7 47 48 49 26 25 19 11 29 9 6 8 30 33 6 30 32 1 46 15 13 17 16 14 18 12 35 24 23 22 29 34 31...

Page 53: ...WATER TUBE ELBOW ASSEMBLY 18 013215 BACKNUT 19 014031 OVEN BAFFLE STUD 20 004925 OVEN LINER ENAMELLED 21 015598 FAN 22 016245 HOOD SPACER 23 016241 VENT HOOD PLATE 24 041401 SCREW M6 x 35 ST ST 25 04...

Page 54: ...274 LEG ASSEMBLY 6 UP TO S N 251941 USA ONLY 252729 NON USA 015275 LEG TUBE WA PLATED UP TO S N 251941 USA ONLY 252729 NON USA 010990 ADJUSTABLE FOOT 52 021526 WATER INLET ELBOW 021527 WATER INLET WAS...

Page 55: ...55 Revision 6 F3590 Moffat Ltd February 2005 11 2 CONTROL PANEL ASSEMBLY 11 2 1 G32M CONTROL PANEL ASSEMBLY 1 15 14 18 17 19 20 9 13 12 10 11 16...

Page 56: ...HOLD SWITCH 240V 021515 ROAST N HOLD SWITCH 110V 7 021474 STEAM SWITCH 8 024773 LIGHT SWITCH 9 024694 CONTROL PANEL HOOK 10 018223 HOLD THERMOSTAT 11 021538 HOLD STAT BRACKET 12 018209 HOLD STAT LABEL...

Page 57: ...57 Revision 6 F3590 Moffat Ltd February 2005 11 2 2 G32MS CONTROL PANEL ASSEMBLY 9 8 4 6 2 7 4 6 4 5 3 10 14 13 11 12 1 17 16 15 19 18 20 21...

Page 58: ...021476 ROAST N HOLD SWITCH 240V 021515 ROAST N HOLD SWITCH 110V 8 021474 STEAM SWITCH 9 024773 LIGHT SWITCH 10 024694 CONTROL PANEL HOOK 11 018223 HOLD THERMOSTAT 12 021538 HOLD STAT BRACKET 13 018209...

Page 59: ...NOID BRACKET 7 015313 MACK UNION 8 019370 GAS SOLENOID 240V 015626 GAS SOLENOID 110V UNITS ONLY 9 019371 PRESSURE TEST POINT 10 015311 PLUG 110V USA CANADA ONLY 11 015314 ADAPTOR NPT x BSP 110V USA CA...

Page 60: ...CABLE CLAMP 4 013586 MAIN TERMINAL BLOCK 5 023025 IGNITION BOX SIT 240V UNITS ONLY 6 023024 IGNITION BOX FENWAL 110V UNITS ONLY 7 024851 TRANSFORMER 110V UNITS ONLY FROM S N 242773 023373 TRANSFORMER...

Page 61: ...OOR TRIM BOTTOM 4 090225 GLASS SEAL EXTRUSION 1 14m 5 020083 BOTTOM HINGE ASSEMBLY 6 090200 GLASS SEAL EXTRUSION 1 74m 7 024844 DOOR OUTER GLASS 8 004452 GLASS CLAMP ANGLE PAINTED 9 002340 DOOR INNER...

Page 62: ...LLER CATCH ASSEMBLY 2 020083 BOTTOM HINGE ASSEMBLY 3 024605 GLASS CLAMP ANGLE 4 023063 DOOR WINDOW GLASS 5 090201 GLASS SEAL EXTRUSION 1 44m 6 024845 DOOR OUTER PANEL 7 090200 GLASS SEAL EXTRUSION 1 4...

Page 63: ...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 180...

Page 64: ...nt St Business Park Tel 0121 327 5575 Nechells 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 9...

Page 65: ...park Rate 60 Hz Spark Voltage 25 kV Lockout Indicator At rear of casing 2 flashes indicates flame error 3 flashes confirms lockout condition Minimum Flame Current 0 7 A A 2 220 240 VOLT G32 MODELS All...

Page 66: ...4 two screws either side ensure screws are started from rear panel 4 side with screw tip pointing out refer figure A 6 Remove plastic from front panel 2 Fasten to side support rails 3 two screws eith...

Page 67: ...the top unit ensure bolted through correct holes of the side support rails 14 Remove plastic from side covers 1 Insert tab end into front panel 2 and fasten opposite end with two screws 15 Position t...

Page 68: ...2 x 8A pozi screws 7 along the top and two at the rear B Top Unit G32 M MS Tip the oven onto its back and remove the feet legs screwed into the base Assemble the four sides of the shroud shroud front...

Page 69: ...the chimney 4 on the rear of the units Secure to the flue duct 6 and bottom unit with four 1 2 x 8A pozi screws 7 The holes in the bottom unit may need to be drilled 3 5mm 1 8 Secure the top of the ch...

Page 70: ...oor and remove fan baffle undo nut securing fan to shaft Note left hand thread turn clockwise to loosen and remove fan 2 Remove side service panel four screws 3 Remove the wires from the motor noting...

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