Service MENUMASTER COMME RCIAL MICROWAVE R OVEN This manual is to be used by qualified appliance technicians only. Maytag does not assume any responsibility for property damage or personal injury for improper service procedures done by an unqualified person.
Important Information Important Notices for Servicers and Consumers Maytag 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.
Table of Contents Important Information .................................................... 2 Important Safety Information ......................................... 4 Grounding Instructions ............................................... 7 Servicing of Grounded Products ................................. 8 Wiring ........................................................................ 8 Proper Grounding and Polarization of 208/230 Volts Wall Outlets ..................................... 8 Explanation ......
Important Safety Information ! WARNING Read the following information to avoid possible exposure to microwave radiation: The basic design of the Amana Microwave Oven makes it an inherently safe device to both use and service. However, there are some precautions which should be followed when servicing the Radarange to maintain this safety. These are as follows: 1. Always operate the unit from an adequately grounded outlet. Do not operate on a two-wire extension cord. 8.
Important Safety Information 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. 1. READ all instructions before using equipment. 8. 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. 2.
Important Safety Information ! CAUTION To avoid risk of personal injury or property damage, observe the following: 1. Briskly stir or pour liquids before heating with microwave energy to prevent spontaneous boiling or eruption. Do not overheat. If air is not mixed into a liquid, liquid can erupt in oven or after removal from oven. 7. Do not use regular cooking thermometers in oven. Most cooking thermometers contain mercury and may cause an electrical arc, malfunction, or damage to oven. 8.
Important Safety Information ! Grounding Instructions WARNING ! Precautions to be observed before and during servicing to avoid possible exposure to excessive microwave energy, or electrical shock disconnect power to oven. • Do not operate or allow oven to be operated with door open.
Important Safety Information Servicing of Grounded Products Explanation The standard accepted color coding for grounding wires is GREEN or GREEN WITH YELLOW STRIPE. These ground leads are NOT to be used as current carrying conductors. It is extremely important that the technician replace any and all grounds prior to completion of the service call. Under no condition should ground wire be left off causing a potential hazard to technicians and consumer.
General Information Unpacking Equipment Radio Interference • Microwave operation may cause interference to radio, television, or similar equipment. Reduce or eliminate interference by doing the following: • • • Inspect oven for damage such as dents in door or inside oven cavity. Report any dents or breakage to source of purchase immediately. Do not attempt to use oven if damaged. Remove all packing materials from oven interior.
60 Hz Troubleshooting 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.
60 Hz Troubleshooting 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.
60 Hz Troubleshooting 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.
50 Hz Troubleshooting 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.
50 Hz Troubleshooting 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.
50 Hz Troubleshooting 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.
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 Thermal cutout Diode Triac MT2 MT1 GA TE Triac 1 (top) is for front element. Triac 2 (middle) is for rear element. Capacitor Snubber assembly Magnetron 60 HZ Models only Microwave blower motor Test Results Disconnect all wires from TCO. Measure resistance across terminals.
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 Halfwave board 60 HZ Models only 50 HZ Models only 6 Discharge Capacitor Remove all wires from terminals. Measure resistance from: 230 to COM............................................. 230 to Ground ......................................... Terminal 5 to 6 ........................
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 Cavity heating element Resistance thermal device (RTD) Relay (contains diode in relay circuit) 0 1 0 2 4 6 8 2 HIDDEN PAD THEN 1 4 6 Test Disconnect wires from terminals. Measure resistance across heating element (900 W) ...................................
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. H.V. Board Pin 1 E2 E3 E1 Pin 1 J1 J2 E4 E5 Pin 1 Pin 28 J5 J3 Pin 50 Pin 1 Pin 1 J8 Pin 1 J6 Pin 1 E7 J7 E6 J4 Pin 1 In straight convection mode, both elements operate simultaneously.
Power Test 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. 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.
Convection Temperature Test and Calibration ! WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to oven and discharge capacitor before servicing, unless testing requires power. Convection Temperature Test Convection Temperature Calibration NOTE: It is absolutely necessary to own and use a thermocouple type oven tester to accurately measure oven temperature. No other type of thermometer can take its place.
Display Diagnostics ! WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to oven and discharge capacitor before servicing, unless testing requires power. ! CAUTION All repairs as described in this troubleshooting section are to be performed only after the caution procedures one through eight listed below have been followed. 1. Check grounding before checking for possible causes. 2. Be careful of the high voltage circuit. 3. Discharge high voltage capacitor. 4.
Service Test ! WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to oven and discharge capacitor before servicing, unless testing requires power. Service Test Putting the oven into Service Test allows you to individually diagnose individual components of the oven, as well as access the Tube Hours and Door Cycles the oven has experienced.
Service Functions ! WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to oven and discharge capacitor before servicing, unless testing requires power. Action Display Description For Pads 1 – 3, Display shows amps being drawn. Appears if plugged into 230 V LEVEL Counter 1 = ON 0 = OFF AMPS Press pad once to turn on. Press again to turn off. On Pads 2 & 3, counter will count up to 62 seconds, then output will turn off.
Service Functions ! WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to oven and discharge capacitor before servicing, unless testing requires power.
Disassembly ! WARNING To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitors before following any disassembly procedure. Door Handle Remove door handle by removing plastic plugs to gain access to set screws. Loosen set screws using a (3/32 inch allen screws), one located to the left of the door handle and one located on the bottom of the door handle.
Disassembly ! WARNING To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitors before following any disassembly procedure. Outer Case Interlock Switch Module 1. Remove screws securing outer flue, located on the back of the unit. 2. Remove screws securing outer case to chassis, see illustration below. 3. Slide outer case back and lift off. 4. Reverse procedure to reassemble. 1. 2. 3. 4. 5. See “Component Location” Figure 2, for location.
Disassembly ! WARNING To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitors before following any disassembly procedure. RTD (Resistance Thermal Device) 1. 2. 3. 4. See “Component Location” Figure 3, page 53. Remove outer case, see “Outer Case” procedure. Disconnect RTD harness connector. Remove mounting screws securing RTD to plenum box, located inside oven. 5. Remove RTD by lifting from top of the oven. 6. Reverse procedure to reassemble.
Disassembly ! WARNING To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitors before following any disassembly procedure. Control Board Assembly Bracket Auto Transformer (60 Hz Models Only) 1. Remove back panel, see “Back Panel” procedure (page 33). 2. Remove inlet duct assembly, see “Inlet Duct Assembly” procedure. 3. Disconnect wire harness from plastic clips. 4. Slide bracket towards the center of the unit. 5.
Disassembly ! WARNING To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitors before following any disassembly procedure. Magnetron, Control, and Fan Thermal Cutouts (TCO) Fan Blade 1. See figures 4 and 5, page 34, for location. 2. Remove outer case, see “Outer Case” procedure. 3. Disconnect and label wire terminals from selected thermal cutout. 4. Remove screws securing thermal cutout. 5. Reverse procedure to reassemble thermal cutout.
Disassembly ! WARNING To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitors before following any disassembly procedure. Capacitor / Diode Thermal Limiter 1. See figure 3, page 33 for location. 2. Remove outer case, see “Outer Case” procedure. 3. Discharge capacitor and remove wire terminals from capacitor. 4. Remove screws securing capacitor mounting bracket to oven chassis. 5. Loosen screws securing capacitor strap to capacitor. 6.
Disassembly ! WARNING To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitors before following any disassembly procedure.
Disassembly ! WARNING To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitors before following any disassembly procedure. RTD Temperature Sensor Inlet Duct Convection Assembly Motor Thermal Limiter Halfwave Board (60 Hz Models) Blower Speaker Board Exhaust Duct Interlock Assembly Magnetrons Convection Motor Capacitor Magnetron Inlet Cover Capacitors/Diodes H.V.
Disassembly ! WARNING To avoid the risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitors before following any disassembly procedure. Earlier Production Later Production Antenna Motor Antenna Motor Control TCO Retainer Clips Retainer Clips Gears Gears Figure 4 Antenna Assembly Convection Motor Convection Box Convection Element Fan Blade TCO (Control) Torque to 30 in/lbs while holding fan blade stationary.
Appendix A ©2006 Maytag Services 16023463 A–1
Owner's Manual Contents Model Identification ...................................2 PRECAUTIONS TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY ........................... 2 IMPORTANT SAFETY INSTRUCTIONS ......... 3 High Speed Commercial Combination Oven Grounding Instructions ..............................5 Installation .................................................5 Display and Features ................................. 6 Cooking and Toasting .................................
Model Identification When contacting Amana, provide product information. Product information is located on oven serial plate.
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. examination, repair, or adjustment. 1. READ all instructions before using equipment. 2. READ AND FOLLOW the specific PRECAUTIONS TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY on page 2. 3. This equipment MUST BE GROUNDED. Connect only to properly grounded outlet.
IMPORTANT SAFETY INSTRUCTIONS ! WARNING ! WARNING 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 facilitate cooking. b. Remove wire twist-ties from paper or plastic bags before placing bag in oven. c. If materials inside the oven ignite, keep oven door CLOSED, turn oven off and disconnect the power cord, or shut off power at the fuse or circuit breaker panel. d.
Installation Unpacking Oven • • • • Inspect oven for damage such as dents in door or inside oven cavity. Report any dents or breakage to source of purchase immediately. Do not attempt to use oven if damaged. Remove all packing materials from oven interior. If oven has been stored in extremely cold area, wait a few hours before connecting power. ! WARNING To avoid risk of electrical shock or death, this oven must be grounded and plug must not be altered.
Display and Features F—Discharge Air Vent G—Air Intake Filter H—Exhaust Flue I—Unit Spacing Guide J—Power Cord A—Oven Door Handle (Lift to open.) B—Door Shield C—Top Control Panel D—Display E—Side Control Panel Oven Features ITEM flashes in display indicating keypads can be used and cooking entries can be made. ITEM STG QTY 8 Temperature is displayed in the time field. : Display POWER 8 H COOK STANDBY LEVEL PREHEAT NOT READY indicates the oven is not at preheat temperature.
Display and Features (cont’d) Displays stage the oven is cooking in during multi-stage cooking programs. Displays programmed ITEM digit pad selected by user. POWER : ITEM Convection cooking only. COOK LEVEL Displays when changing heater setting. Press and hold TEMP ENTRY to display. POWER ITEM COOK LEVEL Displays when changing fan setting. Press and hold POWER LEVEL to display. POWER ITEM COOK LEVEL Time left in cooking condition. ITEM Indicates percentage of microwave power (0 to 100%).
Display and Features (cont’d) Cooking Display START Pad Press the START pad to restart a cooking cycle that was interrupted. STOP/RESET Pad The STOP/RESET pad stops a cooking sequence in progress, and can clear out any remaining time. The first time STOP/ RESET is pressed, it will pause the current cooking cycle. The second time STOP/RESET is pressed, the remaining time will be cleared from the oven.
Using the Oven Control ! CAUTION To avoid risk of burns, handle utensils, accessories, and door with care. Allow oven, utensils, and accessories to cool before cleaning. Oven, utensils, and accessories become hot during operation. Cooking with Preprogrammed Pads This combination oven has been programmed in the factory for all the food that will need to be cooked and prepared. Follow the steps outlined below to ensure food is cooked properly and evenly. 1. 2. 3. 4. 5.
Programming the Oven Programming Items 1. Oven must be ON. • Press PREHEAT ON/OFF. • ITEM must flash in display. If not, open and close oven door. 2. Press PROGRAM SAVE. 3. Press pad to be programmed or reprogrammed. 4. Press TIME ENTRY to program amount of cooking time. • Enter desired cooking time by using numeric keypad. • The total microwave cooking time (all stages combined) is 20 minutes. 5. Press and hold TEMP ENTRY to program the radiant heater. HTr shows in the display.
User Options CLEAN FILTR This oven displays CLEAN FILTR every 7 days. When the message displays, Amana recommends cleaning the air filter thoroughly. Cleaning the air filter will not shut off the message. The message will automatically stop displaying after 24 hours. Depending on microwave use and environmental conditions, the filter may need to be cleaned more or less frequently. Once the frequency is determined, set the option for the appropriate time frame.
Care and Cleaning Clean oven frequently to maximize oven life, performance, and efficiency. A dirty oven cooks inefficiently because moisture, spills, and grease absorb convection and microwave energy. ! WARNING ! CAUTION To avoid electrical shock which can cause severe personal injury or death, unplug power cord or open circuit breaker to oven before cleaning oven. Air Filter Air filter must be cleaned weekly to prevent overheating of oven. The air filter is located directly below the oven door. 1.
Care and Cleaning (cont’d) CATALYST DEACTIVATION & POISONING AGENTS The following partial list of poisoning agents and inhibitors have been found to have a detrimental effect on the activity of the noble metal catalyst. Optimum life and performance of the catalyst requires that exposure to these substances must be avoided. SUBSTANCE EFFECT REMEDIAL ACTION 1. Coating Agents a. rust b. dirt c. inorganic oxides Covers catalyst active site. Non-phosphate detergent washing usually effective for removal.
Before Calling for Service ! WARNING To avoid electrical shock which can cause severe personal injury or death, do not remove outer case at any time. Only an authorized servicer should remove outer case. Service Codes During operation, the oven may display a service code. If this should occur: ERR_ 1. Unplug oven and leave unplugged for approximately one minute. Plug oven in and see if code reappears. • If code does not reappear, continue normal use with the oven. 2.
User Options Numbered Pads Display 1 Preprogrammed Pads 2 Manual Time Entry 3 Reset to READY mode 4 Keybeep OP:10 OP:11 OP:20 OP:21 OP:30 OP:31 OP:40 OP:41 OP:50 OP:51 OP:52 OP:53 OP:60 OP:61 OP:62 OP:63 OP:70 OP:71 OP:72 OP:73 OP:80 OP:81 OP:82 OP:83 OP:b0 OP:b1 OP:E0 OP:E1 OP:E2 OP:E3 Do not display message Display message for 24 hours every 7 days Display message for 24 hours every 30 days Display message for 24 hours every 90 days OP:A0 OP:A1 Use at an elevation below 5,000 ft.
Appendix B ©2006 Maytag Services 16023463 B–1
Quick Refence Guide Quick Start Reference Guide High Speed Commercial Combination Oven Refer to Product Safety Manual for Safety Statements Complete Owner’s Manual available online So...how do I use it? Preprogrammed Pads Oven Clearances To cook food using preprogrammed pads. A—Allow at least 2" (5.1 cm) of clearance around top, back and sides of oven. Proper air flow around oven cools electrical components.
Quick Refence Guide Quick Start Reference Guide Refer to Product Safety Manual for Safety Statements CLEAN FILTR This oven displays CLEAN FILTR every 7 days. When the message displays, Amana recommends cleaning the air filter thoroughly. Cleaning the air filter will not shut off the message. The message will automatically stop displaying after 24 hours. Depending on microwave use and environmental conditions, the filter may need to be cleaned more or less frequently.
