ACP DEC18M Service Manual Download

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Service

Commercial Microwave Oven
DEC18M* & MDC18MT Models

Service Manual

This Base Manual covers all

Commercial Microwave Ovens.

Refer to individual Technical Sheet

for information on specific models.

DEC18M

DEC18MC
DEC18MU

DEC18MCX

MDC18MT

This manual is to be used by qualified
service technicians only. ACP, Inc.
does not assume any responsibility for
property damage or personal injury for
improper service procedures done by
an unqualified person.

16400030

Revision 0

August 2016

Summary of Contents for DEC18M

Page 1: ...dividual Technical Sheet for information on specific models DEC18M DEC18MC DEC18MU DEC18MCX MDC18MT This manual is to be used by qualified service technicians only ACP Inc does not assume any responsibility for property damage or personal injury for improper service procedures done by an unqualified person 16400030 Revision 0 August 2016 ...

Page 2: ...CONTENTS Important Safety Instructions 1 4 Oven Specifications 5 6 Quick Start Reference Guide 7 9 Component Location 10 15 Airflow 16 17 Component Testing 18 24 Wiring and Schematic Diagrams 25 28 Notes Page 29 ...

Page 3: ...1 Important Safety Information 1 ...

Page 4: ... Keep these instructions for future reference If the oven changes ownership be sure this guide accompanies oven PRECAUTIONS TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY A DO NOT attempt to operate this oven with the door open since open door operation can result in harmful exposure to microwave energy It is important not to defeat or tamper with the safety interlocks B DO NOT place any...

Page 5: ...hrough heating it Do not use straight sided containers with narrow necks After heating allow the container to stand in the microwave for a short time before removing it b Use extreme care when inserting a spoon or other utensil into the container 8 Do not deep fat fry in oven Fat could overheat and be hazardous to handle 9 Do not cook or reheat eggs in shell or with an unbroken yolk using microwav...

Page 6: ...paper or other combustible materials are recommended by the manufacturer to withstand the maximum oven temperature 22 Racks utensils rack guides and oven surfaces may become hot during or after use Use utensils or protective clothing like pan grips or dry oven mitts when necessary to avoid burns 23 Do not unplug oven immediately after use Internal fan must cool oven to avoid damage of electrical c...

Page 7: ...2 Oven Specifications 5 ...

Page 8: ...63 in Oven Interior Width 330 cm 13 in 330 cm 13 in 330 cm 13 in 330 cm 13 in 330 cm 13 in Height 171 cm 6 75 in 171 cm 6 75 in 171 cm 6 75 in 171 cm 6 75 in 171 cm 6 75 in Depth 305 cm 12 in 305 cm 12 in 305 cm 12 in 305 cm 12 in 305 cm 12 in Weight Crated 34 kg 74 lbs 34 kg 74 lbs 34 kg 74 lbs 34 kg 74 lbs 34 kg 74 lbs Uncrated 31 kg 68 lbs 31 kg 68 lbs 31 kg 68 lbs 31 kg 68 lbs 31 kg 68 lbs Ins...

Page 9: ...3 Quick Start Reference Guide 7 ...

Page 10: ......

Page 11: ......

Page 12: ...4 Components 10 ...

Page 13: ...BLOWER CAPACITOR DIODE INTERLOCK BLOWER ASSEMBLY CAPACITORS DIODES INTERLOCK SWITCH BLOWER MOTOR BASEPAN TRIAC ...

Page 14: ...DOOR DOOR ASSEMBLY COMPLETE HANDLE WELDMENT INNER DOOR WINDOW HINGES LATCH SPRING ...

Page 15: ...CONTROL BOARD MAGNETRONS DUCTS FUSE LOW VOLT HIGH VOLT CONTROL BOARD UPPER ANTENNA MOTOR MAGNETRONS FUSE LOW VOLT HIGH VOLT CONTROL BOARD CAVITY THERMAL CUTOUT EXHAUST DUCTING TERMINAL BLOCK ...

Page 16: ...TRAY CAVITY ANTENNAS ANTENNA SHIELD LOWER ANTENNA MOTOR LOWER ANTENNA KIT CERAMIC TRAY TRAY SUPPORTS WINDO W AIR FILTER UPPER ANTENNA CAVITY ...

Page 17: ...WRAPPER REAR COVER LAMP LAMP WRAPPER POWER CORD REAR COVER AIR DUCT optional TRANSFORMER SPILL SHIELD 15 ...

Page 18: ...5 Airflow 16 ...

Page 19: ...AIRFLOW 1 AIR ENTERS THROUGH FRONT FILTER 3 AIR PUSHED THROUGH MAGNETRONS 2 AIR IS DRAWN INTO BLOWER 4 AIR PUSHED CAVITY AND EXITS THROUG CAVITY DUCTS ...

Page 20: ...6 Component Testing 18 ...

Page 21: ... 6 volts minimum MT2 MT1 GA TE Triac Disconnect wires to triac Measure resistance from MT1 to MT2 MT1 to Gate MT2 to Gate All terminals to ground Caution Do not operate oven with wire to terminal MT2 removed Infinite Approximately 60 Ω or more Infinite Infinite Capacitor Discharge Capacitors Remove wires from capacitor terminals and connect ohmmeter set on highest resistance scale to terminals Als...

Page 22: ...nal to ground measures Infinite resistance NOTE This test is not conclusive If oven does not heat and all other components test good replace the magnetron and retest Blower Motor Remove all wires from motor Measure resistance across coil Approximately 30 Ω Stirrer Motor Remove all wires from motor Measure resistance across coil Approximately 25k Ω Earth Load Line Line Filter Line to Line Load to L...

Page 23: ... assembly Disconnect wires to switch With door open measure resistance from Monitor Terminals 3 4 Primary Terminals 1 2 Secondary Terminals 5 6 With door closed measure resistance from Monitor Terminals 3 4 Primary Terminals 1 2 Secondary Terminals 5 6 After verifying or replacing the module re connect wires to switch and check operation of monitor circuit before operating the oven Indicates conti...

Page 24: ...9 Continuity Stop 4 to 8 Continuity Power Lvl 5 to 8 Continuity X 2 6 to 8 Continuity Time Entry 7 to 8 Continuity Controller board P1 connector used for touch panel ribbon Line voltage to control board J4 1 to J4 6 Output drive voltage to triac Triac terminals Gate T1 Fan relay controls blower motor antenna motor s and oven light Terminals J4 1 J2 2 Cook relay Control board E1 E4 Line voltage All...

Page 25: ...place HV LV Board Usage Test The Usage Test is used to access Magnetron Hours Magnetron Cycles and Door Cycles Use the following procedure to access the data 1 Open door 2 Press and hold pad 3 for five 5 seconds NOTE After five 5 seconds SErv illuminates in the display 3 Press pad 1 for Magnetron Hours 4 Press pad 2 for Magnetron Cycles 5 Press pad 3 for Door Cycles ...

Page 26: ...r water for five to ten seconds measure and record the temperature 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 Use a digital watch or a watch with a second hand for ovens with electromechanical timers 1 At end of the cycle remove test container Using the thermometer stir water for five to ten seconds and reco...

Page 27: ...7 Wiring and Schematic Diagrams 25 ...

Page 28: ...DEC18M P2003838M DEC18MC P2003840M DEC18MU P2003839M ...

Page 29: ...DEC18MCX P2003841M ...

Page 30: ...MDC18MT P2003842M ...

Page 31: ...NOTES PAGE 16400030 Revision 0 August 2016 29 ...

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