ACP OnCue MCMOC24 Service Manual

ACP OnCue MCMOC24 Service Manual

Commercial q-ing oven

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Service Manual
Commercial Q-ing Oven
MCMOC24
MCMOC24T
MCMOC24K
March 2020
©ACP,Inc.
P2004822M & P2004825M
P2004823M & P2004826M
P2004846M
16400037

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Summary of Contents for ACP OnCue MCMOC24

  • Page 1 Service Manual Commercial Q-ing Oven MCMOC24 P2004822M & P2004825M MCMOC24T P2004823M & P2004826M MCMOC24K P2004846M March 2020 16400037 ©ACP,Inc.
  • Page 2: Table Of Contents

    TABLE OF CONTENTS IMPORTANT INFORMATION ....................1 IMPORTANT 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 .....................
  • Page 3: Important Information

    Important Notices for Servicers and Consumers ACP will not be responsible for personal injury or property damage from improper service procedures. Pride and workmanship go into every product to provide our customers with quality products. It is possible, however, that during its lifetime a product may require service.
  • Page 4: Important Safety Information

    Always operate the unit from an adequately switches there is not valid reason for this action grounded outlet. Do not operate on a two-wire at any time; nor will it be condoned by ACP. extension cord. Before servicing the unit (if unit is operable) perform IMPORTANT: Before returning a unit to a the microwave leakage test.
  • Page 5 IMPORTANT SAFETY INSTRUCTIONS Recognize this symbol as a SAFETY message WARNING When using electrical equipment, basic safety precautions should be followed to reduce the risk of burns, electrical shock, fire, or injury to persons including the following. 1. READ all instructions before using equipment. 9.
  • Page 6 IMPORTANT SAFETY INSTRUCTIONS WARNING WARNING To avoid risk of fire in the oven cavity: Liquids such as water, coffee, or tea are able to be overheated beyond the boiling point without a. DO NOT overcook food. Carefully attend oven appearing to be boiling due to surface tension of the when paper, plastic, or other combustible liquid.
  • Page 7 Important Safety Information Grounding Instructions • Do not operate or allow oven to be operated with door open. • Make the following safety checks on all ovens to be serviced before activating the magnetron or other microwave source, and make repairs as necessary: •...
  • Page 8: Oven Specifications

    SPECIFICATIONS Model MCMOC24* Configuration Countertop or shelf Control System Touch, angled for easy viewing Programmable Control Pads Total Programmable Settings Max. Cooking Time 10:00 Power Levels Defrost Time Entry Option Microwave Distribution Rotating antennas, top and bottom Magnetrons Display Stackable Stage Cooking Yes, 4 Door Opening...
  • Page 9: Oven Construction

    OVEN CONSTRUCTION- Left Outer Panel Top Outer Panel Right Outer Panel Door Left Top Outer Outer Panel Panel Right Outer Panel Door...
  • Page 10 OVEN CONSTRUCTION- Touch Panel Assembly Escutcheon Control Display Board Retaine r Clip Retainer Clip Display Board Touch Panel Assembly 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...
  • Page 11 OVEN CONSTRUCTION- Antenna Antenna Motor Interlock Switch Solenoid Assy Antenna (Top) Interlock Switch (Right Side) Solenoid Assembly Antenna Motor (Right Side) (Bottom) Diode Capacitor Magnetron Magnetron Gasket Magnetron TCO PC Board Harness Capacitors Magnetron Magnetron...
  • Page 12 OVEN CONSTRUCTION- Antenna (Bottom) Antenna Shield Ceramic Tray Tray Support Glide Strip 20 Amp Fuse HV Transformer Triac 40A Control Transformer 20 Amp Fuse Triac 40A Control HV Transformer Transformer Antenna Shield Ceramic Tray Glide Strip Tray Support Antenna (Bottom)
  • Page 13 OVEN CONSTRUCTION- Lower Back Panel Cavity Exhaust Gasket Cavity Exhaust Fan Motor Cavity TCO Cavity Exhaust Motor Gasket Cavity Fan Hood Lower Back Panel Cavity Exhaust Fan Motor Cavity Fan Hood Cavity TCO Hinge Assembly Hinge Hinge Spring Assembly Hinge Spring...
  • Page 14: Oven Performance Test

    OVEN PERFORMANCE TEST All Amana and Menumaster microwave oven power outputs are rated using the IEC705 standards. Using the IEC705 test method requires precision measurements and equipment that is not practical to be performed in the field. Using the test shown below will indicate if the oven performance is satisfactory. Test equipment required: ...
  • Page 15: Component Test Procedures

    COMPONENT TESTING PROCEDURES Illustration Component Testing Results Magnetron TCO Disconnect all wires from TCO. Measure resistance across terminals. Magnetron TCO........Closed at 257ºF (125ºC) and Opens at 300ºF (149ºC) Cavity TCO Disconnect all wires from TCO. Measure resistance across terminals. Cavity TCO..........
  • Page 16 COMPONENT TESTING PROCEDURES WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to oven and discharge capacitor before servicing, unless testing requires power. Illustration Component Testing Results Transformer, HV Discharge Capacitor Remove all wires from terminals. Measure resistance from: ...
  • Page 17 COMPONENT TESTING PROCEDURES WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to oven and discharge capacitor before servicing, unless testing requires power. Main. Board Function Test Set-Up Meter Probe Placement Results Setting Input to main board Main Board Volts Main Board T-1...
  • Page 18 COMPONENT TESTING PROCEDURES WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to oven and discharge capacitor before servicing, unless testing requires power. Function Test Set-Up Meter Setting Probe Placement Results 2.5 amp fuse Remove fuse from Ohms Measure resistance Continuity...
  • Page 19: Troubleshooting Chart

    TROUBLESHOOTING CHART Intial Power-Up (Door Open) Connect Power Cord Open Door 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.
  • Page 20 TROUBLESHOOTING CHART Cook Condition Place cup of water in oven and close door 1. Door not closed. 2. Inoperative switch assembly. 3. Broken or loose wire connection. 1. Bad fan. Fans Run 2. Broken or loose wire connection. Press Pad 1 1.
  • Page 23 Appendix A...
  • Page 24 Quick Start Reference Guide Refer to Product Safety Manual for Safety Statements So...how do I use it? Preprogrammed Pads Manual Operation To cook food using preprogrammed To cook food using a specific entered time and power level. cooking sequences. 1. Place food in oven. Close door. 1.
  • Page 25: Quick Start Reference Guide

    Quick Start Reference Guide For Enclosed Installation A—For North America (UL/CSA) models, allow at least 2” (5.1cm) of clearance around top of oven. For International (50Hz) models, allow at least 7 “ (17.78 cm) of clearance around top. Proper air flow around oven cools electrical components. With restricted air flow, oven may not operate properly and life of electrical parts is reduced.
  • Page 26 Quick Start Reference Guide Care and Cleaning Clean interior and exterior of microwave oven with mild detergent and damp soft sponge or cloth. Wring cloth or sponge to remove excess water before wiping equipment. Splatter Shield (Clean Monthly) 1. Unplug the oven. 2.
  • Page 27 Changing user options Options such as single or double pad programming and beep volume can be changed to suit individual preferences. To change options: Press and hold pad 2 for approximately 5 seconds with door open. 2. Option appears in display. •...

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