Service Manual
Commercial Q-ing Oven
MCMOC24 P2004822M & P2004825M
MCMOC24T P2004823M & P2004826M
MCMOC24K P2004846M
March 2020
16400037
©ACP,Inc.
Page 1: ...Service Manual Commercial Q ing Oven MCMOC24 P2004822M P2004825M MCMOC24T P2004823M P2004826M MCMOC24K P2004846M March 2020 16400037 ACP Inc ...
Page 2: ...PORTANT SAFETY INFORMATION 2 5 Oven Specifications 6 Oven Construction 7 11 Oven Performance Test 12 Component Test Procedures 13 16 Troubleshooting Chart 17 18 Wiring Diagram 19 Schematic Diagram 20 Appendix A Quick Start Reference Guide A 1 ii ...
Page 3: ...ng instruments and the appropriate service information IT IS THE TECHNICIANS RESPONSIBLITY TO REVIEW ALL APPROPRIATE SERVICE INFORMATION BEFORE BEGINNING REPAIRS To locate an authorized servicer please contact ComServ Support Center Web Site Telephone Number WWW ACPSOLUTIONS COM 1 866 811 8559 or 319 368 8195 E Mail commercialservice acpsolutions com Recognize Safety Symbols Words and Labels DANGE...
Page 4: ...g in the high voltage area of the equipmentcompartment Sometypesof failures will leave a charge in these capacitors and the dischargecouldcauseareflexactionwhichcould make you injure yourself 7 Always remember that in the area of the transformer there is HIGH VOLTAGE When the unitis operatingkeep thisarea clear andfree of anythingwhichcould possiblycause anarc or ground etc 8 Do not for any reason...
Page 5: ...der to avoid burns 11 DO NOT operate this equipment if it has a damaged cord or plug if it is not working properly or if it has been damaged or dropped 12 This equipment including power cord must be serviced ONLY by qualified service personnel Special tools are required to service equipment Contact nearest authorized service facility for examination repair or adjustment 13 DO NOT cover or block lo...
Page 6: ...ion consult physician or pacemaker manufacturer about effects of microwave energy onpacemaker 14 An authorized servicer MUST inspect equipment annually Record all inspections and repairs for future use SAVE THESE INSTRUCTIONS To avoid risk of fire in the oven cavity a DO NOT overcook food Carefully attend oven when paper plastic or other combustible materials are placed inside the oven to facilita...
Page 7: ...otherequipment anincreaseincooking timesmayberequiredandfusescanbeblown Donotoperateorallowoventobeoperatedwith door open Makethefollowingsafetychecksonallovenstobe servicedbeforeactivatingthemagnetronorother microwave source and make repairs as necessary Interlock operation Proper door closing Seal and sealing surfaces arcing wear and other damage Damagetoorlooseningofhingesandlatches Evidence of...
Page 8: ...ignal Door opens automatically Temp Display N A Exterior Dimensions D 18 473 W 13 346 H 17 451 Cavity Dimensions D 8 222 W 11 298 H 5 136 Usable Cavity Space 319 cubic ft 009m3 Exterior Finish Stainless steel Interior Finish Stainless steel Power Consumption 3100 W Power Output 2400 W Microwave Power Source 208 230V 60 Hz 20 A single phase Frequency 2450 MHz Product Weight 70 lbs 32 kg Ship weight...
Page 9: ...OVEN CONSTRUCTION 7 Left Outer Panel Top Outer Panel Right Outer Panel Door Left Outer Panel Top Outer Panel 10 Right Outer Panel Door ...
Page 10: ... Control Display Board Retainer Clip Touch Panel Assembly Display Board Retaine r Clip Escutcheon Control Main Control Board 2 5 Amp Fuse Fan Motor Fan Guard 40 pin Header Bracket 2 5 Amp Fuse Main Control Board 40 Pin Header Bracket Fan Motor Fan Guard ...
Page 11: ...enna Antenna Motor Interlock Switch Solenoid Assy Interlock Switch Right Side Diode Capacitor Magnetron Magnetron Gasket Magnetron TCO PC Board Harness Antenna Top Antenna Motor Bottom Solenoid Assembly Right Side Capacitors Magnetron ...
Page 12: ...r Triac 40A Control Transformer Antenna Shield Glide Strip Antenna Bottom Antenna Shield Ceramic Tray Tray Support Glide Strip 20 Amp Fuse HV Transformer Triac 40A Control Transformer 20 Amp Fuse Ceramic Tray Antenna Bottom Tray Support ...
Page 13: ... Panel Cavity Exhaust Gasket Cavity Exhaust Fan Motor Cavity TCO Cavity Fan Hood Cavity Exhaust Motor Gasket Lower Back Panel Cavity Exhaust Fan Motor Cavity Fan Hood Cavity TCO Hinge Assembly Hinge Spring Hinge Spring Hinge Assembly ...
Page 14: ...emperature T1 3 Place test container of water in the center of oven cavity and close door 4 Heat the water for a 33 second full power cycle NOTE Burger King uses a similar test using a bowl and lid heating time is 30 seconds NOTE Use a digital watch or a watch with a second hand for ovens with electromechanical timers 5 At end of the cycle remove test container Using the thermometer stir water for...
Page 15: ...m MT1 to Gate MT1 to MT2 0 8 VAC when energized 0 volts when gate energized or closed Line volts when gate not energized or open Capacitor Discharge Capacitor Remove wires from capacitor terminals and connect ohmmeter set on highest resistance scale to terminals Also check between each terminal and capacitor case Between Terminals Meter should momentarily deflect towards zero then return to over 5...
Page 16: ... BK Primary Terminals BK BN After verifying or replacing the assembly re connect wires to switch and check operation of monitor circuit before operating the oven Indicates continuity Infinite Infinite Indicates continuity Right interlock switch assembly Mechanical Disconnect wires to switch With door open measure resistance from Monitor Terminals RD BK Secondary Terminals GY RD With door closed me...
Page 17: ...arge capacitor before servicing unless testing requires power 15 Main Board Function Test Set Up Meter Setting Probe Placement Results Input to main board Left Right Switch Assembly Main Board Door Closed Volts Main Board T 1 Black wire Triac Red wire Line voltage J4 Input from Control Transformer Main Board Volts J4 1 J4 2 28 VAC ...
Page 18: ...n 208 volts when 208 volts line voltage present J1 Triac Output Connection Orange wire to Red wire Volts Orange wire at Traic Connection Red wire at Triac Connection 0 8 VAC when Triac energized Power Relay T3 to Blue wire at J1 Triac connection Volts T3 to Blue wire at Triac Connection 208 volts when 208 volts line voltage present T4 to Blue wire at J1 Triac Connection Volts T4 to Blue wire at Tr...
Page 19: ... Open Door Yes 1 Check interlock switches 2 Check T1 connection 3 Check J1 1 connection 1 No power applied to power cord 2 Oven fuse open 3 Main board control fuse 4 Inoperative magnetron TCO 5 Inoperative cavity TCO 6 Broken or loose wire 7 Inoperative control transformer 8 Ribbon connector 9 Inoperative display board ...
Page 20: ...rative high voltage transformer 2 Inoperative capacitor 3 Inoperative magnetron 4 Inoperative diode 5 Broken or loose wire connection No heat 1 Inoperative triac 2 Inoperative high voltage board 3 Inoperative high voltage transformer 4 Broken or loose wire connection 1 Inoperative door latch 2 Broken or loose wire connection 1 Inoperative touch panel 2 Bad ribbon cable 1 Bad fan 2 Broken or loose ...
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Page 23: ...A 1 Appendix A ...
Page 24: ...e power level if less than 100 is desired For a lower microwave power press pads 1 for 10 through 9 for 90 or 0 for no microwave energy NOTE Press POWER LEVEL pad twice to return to 100 microwave power 5 Press TIME ENTRY pad to add up to three additional cooking stages Total cooking time cannot exceed 5 minutes Enter cook time and power level as in steps 4 and 5 6 Press START pad to set new progra...
Page 25: ...C Allow at least 1 1 4 3 18 cm between air discharge on back of oven and back wall Note Back to back installation allows correct clearance Oven Clearances Troubleshooting Tips If the door does not open after a cooking cycle Press the stop button If door still does not open press stop again If door still remains closed gently pull door forward to open manually If this continues to be an issue pleas...
Page 26: ...rior Door Clean Daily 1 To clean interior door gently pull out on door until door opens at a 90 degree angle 2 Wipe the underside of door and inside door arms with a damp cloth Wipe dry Glide Strips Clean Monthly 1 Unplug the oven 2 Clean in between door arms and side of cavity with a cloth Do not use paper towels on the end of a non metallic spatula with mild detergent or degreaser cleaning the g...
Page 27: ...beep 2 Speaker Volume OP 20 OP 21 OP 22 OP 23 Eliminates beep Sets volume to low Sets volume to medium Sets volume to high 3 Key Beep OP 30 OP 31 Prevents beep when pad is pressed Allows beep when pad is pressed 4 Keyboard Enable Window OP 40 OP 41 OP 42 OP 43 15 seconds after oven door is closed keyboard disabled 30 seconds after oven door is closed keyboard disabled 1 minute after oven door is c...
