______________ Service Manual High Speed Combination Oven AXP20 P1333601M P1333602M AXP20JB P1333606M AXP20MK AXP20QT P1333610M MXP20 P1333614M P1333615M P1333612M 60 Hz January 2011 16400002 Rev.
TABLE OF CONTENTS IMPORTANT INFORMATION .....................................................................................................1 IMPORTANT SAFETY INFORMATION ................................................................................. 2-5 Oven Specifications ...............................................................................................................6 Oven Construction........................................................................................................
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.
Important Safety Information ! WARNING Read the following information to avoid possible exposure to microwave radiation: The basic design of the 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 microwave 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. 2. READ AND FOLLOW the specific “PRECAUTIONS TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY”. 8. 9. This equipment, including power cord, must be serviced ONLY by qualified service personnel.
Important Safety Information ! CAUTION To avoid risk of personal injury or property damage, observe the following: 7. Do not heat baby bottles in oven. 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. 8. Never use paper, plastic, or other combustible materials that are not intended for cooking. 9.
Important Safety Information Grounding Instructions ! WARNING To avoid risk of electrical shock, injury or death; make sure these grounding instructions are followed. ! WARNING Do not remove grounding prong when installing grounded appliance in a home or business that does not have three wire grounding receptacle, under no condition is grounding prong to be cut off or removed.
SPECIFICATIONS Models AXP20 AXP20JB AXP20QT AXP20MK Power Source Voltage AC Amperage (Single Unit) Frequency Single Phase, 3 wire grounded Receptacle Plug Power Output – Microwave Nominal microwave energy (IEC705) Minimum Temperature Rise (∆T) Operating Frequency Power Consumption Microwave only Convection fan Radiant heater Convection heater Combination Dimensions Cabinet (in / cm) Width Height Depth (includes bracket on back) Oven Interior (in / cm) – useable space Width Height Depth Weight (lbs.
OVEN OVENCONSTRUCTIONCONSTRUCTION PANELS (TOP & SIDE) Right Outer Panel Door AXP Air Filters Top Outer Panel Torx (T-15) Left Outer Panel Outercase Back Adaptor Board (AXP20QT Only) Torx (T-15) 7
OVEN CONSTRUCTIONOVEN CONSTRUCTION CONTROL PANEL ASSEMBLY Control Holder Display Board Touch Screen Display Knob Collar Knob Filter Board Touch Panel Assembly Bezel Data Key Board Data Key Board Holder Data Key Plug Caution: Do not handle touch screen display by the sides. This may damage the display circuitry. Handle using the corners.
OVEN OVENCONSTRUCTIONCONSTRUCTION Circuit Boards Power Relay Limiter Triac Thermocouple Temp Sensor (RTD) Cooling Fans Convection Motor Convection Motor Main Board *Relay Monitor Board *Power Relay Snubber Power Supply Board (24 VDC) Temp Sensor (RTD Radiant) Thermocouple Limiter Triac (TR4) -Radiant Heater Cooling Fans *Note: If Main Fuse (F1) is blown replace Relay Monitor Board and Power Relay.
OVEN CONSTRUCTIONOVEN CONSTRUCTION HV Transformers Magnetrons Fuses Sensor Triac’s Magnetron TCO’s Capacitor / Diodes High Voltage Transformers Temp Sensor (RTD Convection) Small Fuses F2,F3,F4 (12 amp) F2 - Convection Motor F3 - Magnetron # 1 F4 - Magnetron # 2 Switch (Primary) Capacitor Diode (Right Side) Triac (TR1) (Magnetron # 1) Triac (TR2) (Magnetron # 2) Triac (TR3) (Convection Heater) Magnetron # 1 Large Fuses F1,F5,F6 (25 amp) Magnetron TCO’s Magnetron # 2 Capacitor Diode (Left Side) *F1
OVEN CONSTRUCTIONOven Switch Replacement & Interlock Switch Adjustment Switch Adjustment Lever Attach Ohm-Meter to Wire Harness Connectors Adjustment Figure 1 Mounting Screw Switch Test: When the door is opened or closed, the left door hinge activates the secondary / monitor switches. 1. Connect an ohm-meter to wire harness (as shown in figure 1, to verify switch activation). Note: The switch assembly should activate when the door gap is approximately 1/4 inch (6mm). Switch Adjustment: 1.
OVEN CONSTRUCTIONAntenna Motor Cam Gear Assembly Antenna Rivet, Plastic Radiant Heater Multi-Wave Spring Washer Flat Washer Lock Nut Note: Requires 15/16” (26mm) Deep Socket See Detail Below *Note: Plastic Rivet cannot be reused.
OVEN PERFORMANCE TEST Note: To run Oven Performance Test the, oven cavity must be at room temperature, and the display must read MICROWAVE ONLY mode. See below using oven as a microwave oven. If MICROWAVE ONLY is not in display you must go to User Options and activate MICROWAVE ONLY option. Changing User Options: 1. Oven must be OFF. 2. Press and hold Pad "2" for 5 seconds. KEYPAD 3. Rotate dial to highlight: ALLOW MICROWAVE ONLY mode. 4. Press SAVE.
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: • • 1000 ml test container and thermometer. Digital watch / watch with a second hand for use on ovens with electromechanical timers.
Troubleshooting POWER UP CONDITION See component test procedures section for testing procedures and results. PLUG OVEN IN 1. No Line Voltage 2. Inoperative Power Cord 3. Inoperative Fuse 4. Inoperative Filter Board 5. Inoperative Touch Screen 6. Inoperative Main Control Board 7. Inoperative Display Board 8. Inoperative -24 Volt Power Supply Board 9. Broken or Loose Wire Connection (NORMAL DISPLAY) PREHEAT TEMP = 520 F PRESS TO PREHEAT No CHANGE TEMP PROGRAM Yes Error Code Appears 1.
Troubleshooting PREHEAT CONDITION Touch PRESS TO PREHEAT On Touch Screen or Push Knob In Yes (NORMAL DISPLAY) OVEN PREHEATING See component test procedures section for testing procedures and results. PREHEAT TEMP = 520 F No Inoperative Display Board Inoperative Touch Screen Indicates Rising Temperature PROGRAM CHANGE TEMP See component test procedures section for testing procedures and results.
Troubleshooting MICROWAVE CONDITION SERVICE TEST 1. Press Off Pad Repeatedly Until Press to Preheat Appears 2. Press Hidden Pad 3. Press Pads 1-3-5-7-9 Yes (NORMAL DISPLAY) SERVICE MODE OVEN INFORMATION DISPLAY VERSION: 0.39 MAIN VER: 0.46 EE 0.3 DOOR CYCLES 20,156 TUBE HRS: 2156 EE 255 NEXT TEST PREV TEST EXIT CLEAR INFO Hidden Pad See component test procedures section for testing procedures and results.
Troubleshooting OPERATIONAL CODES During oven operation the display may indicate one of the following: 1. When you press the pad/ knob to preheat the oven the display indicates. 2. During cooking, the oven display indicates. CALL SERVICE 1. Unplug / plug oven in 2. If code continues to appear. Replace Electronic Limiter CODE G0 1. After food is placed in the oven the door is closed the display indicates. DOOR See component test procedures section for testing procedures and results. OPEN 1.
Troubleshooting OPERATIONAL CODES 1. At the end of a cook cycle and the food is removed and the door is closed the display indicates. OVEN NOT AT 2. When a pad is pressed the display indicates. PREHEAT Change Option Code #10 to OFF TEMPERATURE 1. Normal do not service the oven for this. Option #12 This is activated at the factory. CLEAN It will appear every 7 days. Note: Customer can change this option as desired. See Quick Start Reference Guide section.
Display Diagnostics Error Codes Display B0 B1 Description Touch Panel Touch Panel Corrective Action Replace Touch Panel Replace Touch Panel C-0 C-1 C-2 D-0 D-1 D-2 G-0 G-2 G-2 H-0 H-1 H-2 H-3 M-0 M-1 M-2 Temp Sensor (RTD) (open) Temp Sensor (RTD) (shorted) Temp Sensor (RTD) (out of range) Thermocouple (RTD) (open) Thermocouple (RTD) (shorted) Thermocouple (RTD) (out of range) Oven Exceeded Max. Temp. Magnetron TCO Cooling Motor Signal Missing Main Board Set Point Incorrect.
AXP20 Service Test Service Test Access to Service Mode Screen While at the Main Screen, press the following sequence on the keypad: NOTE: The “MICROWAVE ONLY” button may or may not be present. 1. Press OFF pad until PRESS TO PREHEAT appears. 2. Press Hidden Pad. 3. Press pads 1 - 3 - 5 - 7 - 9 The display indicates SERVICE MODE. Hidden Pad Oven Information Screen This screen is Oven Information showing the versions of software in the control boards and information about door cycles and tube hours. 1.
Service Test 2 Manual Operation of Magnetrons #1 & #2 Screen This screen will allow operation of Magnetron #1 and #2 together and show the number of amps being drawn. NEXT TEST: Press this pad to go to the next Service Mode Test PREV TEST: Press this pad to go to the previous Service Mode Test TURN ON: This pad will toggle between turning the magnetrons on and off. CANCEL: Press this pad to return to the Main Menu RANGE: Under normal operation, each mag’s amp draw should be 5 – 12 amps.
Service Test Manual Operation of Magnetron #2 Screen This screen will allow operation of Magnetron #2 and show the number of amps being drawn. 4 NEXT TEST: Press this pad to go to the next Service Mode Test PREV TEST: Press this pad to go to the previous Service Mode Test TURN ON: This pad will toggle between turning the magnetron on and off. CANCEL: Press this pad to return to the Main Menu RANGE: Under normal operation, the amp draw should be 5 – 12 amps.
Service Test Radiant Heater Screen This screen will allow operation of the radiant heater and show the number of amps being drawn. 6 NEXT TEST: Press this pad to go to the next Service Mode Test PREV TEST: Press this pad to go to the previous Service Mode Test TURN ON: This pad will toggle between turning the heater on and off. CANCEL: Press this pad to return to the Main Menu RANGE: Under normal operation, the amp draw should be 10 – 16 amps.
Service Test Convection Fan – High Speed Screen 8 This screen will allow operation of the convection fan at a high speed and show the number of amps being drawn. NEXT TEST: Press this pad to go to the next Service Mode Test PREV TEST: Press this pad to go to the previous Service Mode Test TURN ON: This pad will toggle between turning the convection fan on and off at a high speed. CANCEL: Press this pad to return to the Main Menu RANGE: Under normal operation, the amp draw should be 0.6 – 2.6 amps.
Service Test Antenna Motor Screen This screen will allow operation of the antenna motor show the number of amps being drawn. 0 10 NEXT TEST: Press this pad to go to the next Service Mode Test PREV TEST: Press this pad to go to the previous Service Mode Test TURN ON: This pad will toggle between turning the antenna motor on and off. CANCEL: Press this pad to return to the Main Menu RANGE: Under normal operation, the amp draw may be to low to read.
Service Test Memory / Network Status Screen 12 This screen will show which memory chips are present and if the oven is hooked up to an external network. NEXT TEST: Press this pad to go to the next Service Mode Test PREV TEST: Press this pad to go to the previous Service Mode Test CANCEL: Press this pad to return to the Main Menu Error List Screen This screen will show a description of the types of errors that can occur.
Service Test Error History Screen This screen will show the previous error codes that have occurred in the oven. 14 NEXT TEST: Press this pad to go to the next Service Mode Test G2 PREV TEST: Press this pad to go to the previous Service Mode Test C0 H1 B0 SCROLL: This pad will advance through the history of the error codes. (1-10) CANCEL: Press this pad to return to the Main Menu Note: To clear codes: Press and hold Pad 1 until Code(s) disappear.
Calibration Touch Screen Calibration To calibrate the touch screen perform the following steps. 1. 2. 3. The oven must be plugged In. Stand-by screen must be in the Display. Press the Hidden Pad. Standby Screen □ □ Type A Type B Hidden Pad 4. 5. 6. 7. Press Pads 4, 5, 6. Press Directly ON small Square in the Display. The Square will move to a different location on the Display. Press Directly On the small Square in the Display again until the square disappears. Press the 0 Pad. 8.
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 Test Disconnect all wires from TCO. Measure resistance across terminals. Magnetron TCO .......................................
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 Transformer Convection blower motor ST1 Test Discharge Capacitor Remove all wires from terminals. Measure resistance from: 230 to COM.................................................. 208 to COM.................................................. 230 to Ground ...........................
Quick Start Reference Guide Refer to Product Safety Manual for Safety Statements. High Speed Commercial Combination Oven Complete Owner’s Manual available online Cooking with Preprogrammed Pads Oven Controls To cook food using pre-programmed menu The oven touch screen displays menu options. The dial, keypad and touch screen can be used to navigate through onscreen menus. This guide will focus primarily on the dial control for menu navigation. items MENU 520° F Dial Menu Navigation 1.
Quick Start Reference Guide 1 MENU ACCESSING THE PROGRAM MENU 1. Appet-Side 2. Pasta-Pizza 3. Meats 4. Seaf-Sub 5. Dess-Soup 6. Breakfast BACK MANUAL COOK 1. To access the PROGRAM MENU, select the BACK button on the main menu screen. Push 2. Then select PROGRAM from the READY screen. High Speed Commercial Combination Oven 2 MENU 1. Appet-Side 2. Pasta-Pizza 3. Meats 4. Seaf-Sub 5. Dess-Soup 6.
Quick Start Reference Guide High Speed Commercial Combination Oven ADDING ITEM TO ITEM MENU 1. 2. 3. Select NEW from the PROGRAM MENU.to add a new item or EDIT to edit item. Select category you wish to change from MAIN MENU and ITEM GROUP Menus. At the ITEM MENU, rotate dial until until item to be added or changed is highlighted and press dial. The confirm screen will appear and ask you to confirm the change you’re making. Touch CREATE or press knob to CONFIRM OVERWRITE.
Quick Start Reference Guide Refer to Product Safety Manual for Safety Statements. High Speed Commercial Combination Oven Complete Owner’s Manual available online KEYPAD Changing User Options There are several option you can change to customize the operation of the oven for your business. The table below shows these options; the factory setting is shown in bold type. 1. Oven must be off. To turn oven off, press OFF button on Keypad. 2. Press and hold “2” keypad for three seconds. 3.
AXP / MXP EZCard Programming To program the oven using the EZCard: Oven must be in Standby mode (Preheat must be OFF) 1. Open protective cover from bottom of keypad. 2. Insert the EZCard into the slot located below the vertical keypad. Note: The EZCard can be inserted forwards or backwards. 3. From Standby, press and hold the “2” pad to go to “User Options”. 4. Go to Option #18 by pressing “Prev Option” on the screen or repeatedly pressing “Next Option” 5.
VT 37 J1 J2 POWER SUPPLY BOARD RD OR KEYPAD J4 WH WH WH WH RD RD RD J5 J6 J3 NO BU MONITOR INTLK SWITCH C RD P1 P2 J3 DISPLAY BOARD J1 FILTER BOARD J7 TOP CONVECTION HEATER BOTTOM RADIANT HEATER NC WH OR DATA KEY BOARD OR RD 1 2 G VT YL RELAY BOARD J2 RD BK RD 1 2 G GY CONVECTION HEATER TRIAC TR3 GY RADIANT RTD CONVECTION RTD RADIANT HEATER TRIAC TR4 J1 TOUCH SCREEN DISPLAY GY GY VT GY J1 J2 J13 J12 BU VT YL RD WIRE CODE HIGH VOLTAGE LOW VOLTA
Schematic Diagram - AXP20 P1333601M, P1333602M, AXP20JB P1333606M, AXP20MK P1333612M, MXP20 P1333614M, P1333615M Radiant Convection RTD RTD F6 INTERLOCK POSITION DOOR CLOSED 38
VT 39 OR J1 J2 POWER SUPPLY BOARD RD DATA KEY BOARD KEYPAD J4 C BU NC OR WH MONITOR INTLK SWITCH NO OR WH WH BR BU BU BU ADAPTOR BD PLUG RD RD WH RD P1 P2 J3 RD 1 2 G VT YL RELAY BOARD J2 VT RD BK RD RD 1 2 G GY CONVECTION HEATER TRIAC TR3 GY RADIANT RTD CONVECTION RTD RADIANT HEATER TRIAC TR4 J1 TOUCH SCREEN DISPLAY GY GY WH RD RD RD J5 J6 J3 DISPLAY BOARD J1 FILTER BOARD J7 TOP CONVECTION HEATER BOTTOM RADIANT HEATER VT GY J1 J2 J13 J12
Schematic Diagram - AXP20QT P1333610M L1 GND L2 J1-1 ADAPTOR BD PLUG F1 CONTROL XFMR I2C PORT F7 J2-1 J2-3 J11 J1-3 KEYPAD J13 J3-J J3-I J3-H J3-G J3-E J3-F J4 J1 ST2-5 ST2-4 ST2-2 ST2-1 ST1-1 CONVECTION RTD J4-2 U8 M CONV BLOWER K1 9 6 J5-3 U10 J5-4 J14-1 J8-7 F5 J5-6 TC 4 LIMITER J14-2 J5-5 CONTROL 3 7 T1 T2 U19 10 N.O.
Appendix A A-1
AXP/MXP Care and Cleaning Daily Cleaning Recommendations: Follow the recommendations below for proper maintenance of the AXP/MXP oven. Please note: The use of caustic cleaning products or those containing ammonia, phosphates, chlorine, sodium or potassium hydroxide (lye) can damage critical oven parts. Do not use water pressure type cleaning systems. Use of unapproved cleaning agents will void the terms of the warranty.
III. WEEKLY CLEANING 1. Clean Air Filter Remove the air filters located on each side of the oven at the base. Wash filter in a mild detergent solution made with warm water. Rinse and dry thoroughly. Replace filters by sliding back into the side locations. DO: Clean oven daily Use non-caustic cleaner Remove food from oven at end of cycle Use only accessories that are both high temperature oven-safe and microwave-safe. Wash rack with warm, soapy water and air dry.
60 Hz High Speed Combination Oven January 2011 16400002 Rev.
