ACP ARX1 Service Manual Download Page 47

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Cedar Rapids, IA 52404

Page 47 of 80

Part No. 16400033

Original Instructions

Component Overview

Testing

Removal and Replacement

⚠

WARNING

• High voltage capacitor must be discharged before performing these procedures. Wait at least five (5) minutes

after shutdown of high voltage system.

• Use extreme caution when working with live circuits.

⚠

DANGER

• Disconnect Power Supply before removing any Covers or Panels.

The high voltages and currents at the filament and secondary winding of the Transformer are extremely dangerous.

• The high voltages and currents at the filament and secondary winding of the transformer are extremely dangerous.

Never make any direct voltage or current measurements at these winding. It is very dangerous to work near this

part when the oven is on, or even if this circuitry has been switched off.

• All High Voltage Capacitors must be discharged before performing this procedure.

⚠

CAUTION

• Extreme care must be taken when performing tests with line voltage applied.

• Oven is heavy.

! IMPORTANT !

FOR YOUR SAFETY

Review ALL Safety Precautions before preforming any Component Testing Procedures contained in this section.

Summary of Contents for ARX1

Page 1: ...or to servicing this equipment please refer to the SAFETY INSTRUCTIONS contained in this manual for important safety information Service Manual HIGH SPEED COMMERCIAL COMBINATION OVEN Accelerated Cooking Products INC This document covers ARX and MRX series models Models Covered ARX1 ARX1BL ARX2 ARX2BL MRX1 MRX1BL MRX2 MRX2BL 16400033 December 2018 ...

Page 2: ...nu Items 20 Manual Cooking 21 Manual Programming 23 Save a Menu Item from Manual Cook 23 Manually Edit an Existing Menu Item 23 Manually Move Recipe 23 Manual Organization Folders 24 Manual Organization Tabs 25 Oven Programming USB Flash Drive 26 Export Menu via USB Flash Drive 26 Open Menu in ACP Programming Application 26 Import Menu via USB Flash Drive 26 Oven Programming Wi Fi and Ethernet 27 ...

Page 3: ...ransformer and Snubber 52 Testing 52 Autotransformer 52 Snubber 52 Removal and Replacement 52 Cooling Fan Relay 24V 53 Testing 53 Removal and Replacement 53 Power Relay 54 Testing 54 Removal and Replacement 54 HV Capacitor 55 Testing 55 Removal and Replacement 55 HV Diode 56 Testing 56 Removal and Replacement 56 Magnetron TCO 57 Testing 57 Removal and Replacement 57 Magnetron 58 Testing 58 Removal...

Page 4: ...nsor 67 Testing 67 Removal and Replacement 67 Convection Motor 68 Testing 68 Removal and Replacement 68 Heater 69 Heater 69 Testing 69 Removal and Replacement 69 Cooling Fans 70 Testing 70 Removal and Replacement 70 Cooling Fan Motor Run Capacitors 71 Testing 71 Removal and Replacement 71 Wiring Diagrams Schematics 73 Electrical Schematic Models Amx1 Amx1bl Mrx1 Mrx1bl 73 Wiring Diagram Models Amx...

Page 5: ...______ Dealer s name and address ____________________ __________________________________________ __________________________________________ Online Oven Resources ACP Programming Application Download and install the ACP Programming Application to create edit and customize menu and display settings for your oven using a desktop computer or tablet To download the latest and greatest version of the AC...

Page 6: ... 2018 ACP Inc Cedar Rapids IA 52404 Page 6 of 80 Part No 16400033 Original Instructions Important Safety Information 1 ...

Page 7: ...iar with the safety procedures required in the repair of this equipment and who is equipped with the proper tools parts testing instruments and the appropriate service information IT IS THE TECHNICIANS RESPONSIBLITY TO REVIEW ALL APPROPRIATE SERVICE INFORMATION BEFORE BEGINNING REPAIRS To avoid risk of severe personal injury or death disconnect power before working servicing on appliance to avoid ...

Page 8: ...anything which could possibly cause an arc or ground etc 8 DO NOT for any reason defeat the interlock switches There is no valid reason for this action at any time nor will it be condoned by ACP 9 IMPORTANT Before returning an oven to a customer be sure to check for proper switch interlock action 10 The microwave oven should never be operated with any components removed and or bypassed or when any...

Page 9: ...en is specifically designed to heat cook or dry food It is not designed for industrial or laboratory use 8 This oven is NOT intended for use by persons including children with reduced physical sensory or mental capabilities or lack of experience and knowledge unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety 9 CHILDREN S...

Page 10: ... 1 DO NOT deep fat fry in oven Fat could overheat and be hazardous to handle 2 DO NOT cook or reheat eggs in shell or with an unbroken yolk using microwave energy Pressure may build up and erupt Pierce yolk with fork or knife before cooking 3 Pierce skin of potatoes tomatoes and similar foods before cooking with microwave energy When skin is pierced steam escapes evenly 4 DO NOT operate oven witho...

Page 11: ... 2018 ACP Inc Cedar Rapids IA 52404 Page 11 of 80 Part No 16400033 Original Instructions Introduction Theory of Operation Sequence of Operation 2 ...

Page 12: ...o come up to the programmed cooking temperature With a Menu Item loaded into the oven cavity and the door closed the operator can either select from a list of preprogrammed menus or input manual cooking instructions There are cooking stages that can have different levels of microwave energy and impingement air velocity Once initiated the oven s Controller will signal the Magnetron circuit to opera...

Page 13: ... 2018 ACP Inc Cedar Rapids IA 52404 Page 13 of 80 Part No 16400033 Original Instructions Specifications Power Specification Input Output Consumption Oven Dimensions Weight Grounding Installation 3 ...

Page 14: ...4 4 Plug NEMA 6 30P NEMA 6 20P Power Output Microwave 2000 W 1000 W Convection 3000 W 3000 W Frequency 2450 MHz 2450 MHz Power Consumption Watts 5950 W 3600 W Amps 240V 28 6 A 18 2 A Dimensions Cabinet Width 14 358mm 14 358mm Height 22 578mm 22 578mm Depth 29 743mm 29 743mm Cavity Width 12 312mm 12 312mm Height 7 178mm 7 178mm Depth 12 312mm 12 312mm Weight Crated 152 lbs 69 kg 134 lbs 61 kg Uncra...

Page 15: ...e all packing materials from oven interior If oven has been stored in an extremely cold area wait a few hours before connecting power If you plan to program via Ethernet remove plastic plug from port on the right rear of oven Gently use pliers if necessary STEP 2 Place Oven on Counter Recommended countertop surface depth is 28 71 cm Do not install oven next to or above source of heat such as pizza...

Page 16: ...Inc Cedar Rapids IA 52404 Page 16 of 80 Part No 16400033 Original Instructions Oven Operation Touch Panel Menu Descriptions Touch Screen Icon Descriptions Basic Oven Operation Preprogrammed Menu Manual Cooking 4 ...

Page 17: ...ven temperature MANUAL RECIPE Manually enter settings for a recipe EDIT RECIPE Change current oven temperature MOVE RECIPE Move reorganize individual programmed recipes MANAGE FOLDERS Add or edit recipe folders MANAGE TABS Add or edit recipe tabs NETWORK Connect the oven to Wi Fi LOAD FILE Transfer a Menu file to the oven via USB Flash Drive USER OPTIONS Modify a variety of user options such as ke...

Page 18: ...ain Screen GREEN CHECK MARK ICON Press to begin cooking after manually entering a recipe Press to Save changes BACK ICON Press to return to previous Screen NEXT ICON Press to move to next Screen DELETE ICON Press to delete Menu Item Folder or Network PAUSE ICON Press to pause a Cook Cycle STOP ICON Press to cancel a Cook Cycle Press to Stop and Return to the Main Screen NEW FOLDER ICON Press to ad...

Page 19: ...ormation by creating new recipes folders and tabs See Section Manual Programming To download and view example menus please visit acpsolutions com oven programming First Time Use Set User Options There are several options you can change to customize the operation of the oven for your business To access and edit user options see Section User Manual Set Time and Date settings for current local time T...

Page 20: ...ed temperature before cook cycle begins Enable Preheat Warning in user options 3 At the end of the cooking cycle the oven beeps and displays animation Use oven mitts and or paddle to carefully remove food from oven The Home Screen on the oven displays Recipe Options Scroll up and down with your finger to navigate through On Screen Menus and Recipes After the oven has preheated the Menu appears The...

Page 21: ...on on the left and input new temperature Two frequently used temperatures will appear for quick selection Press Green Check Mark Icon after inputting a temperature 4 For Stage 1 enter cooking time by pressing Time Entry Box A number pad will appear Enter the desired Cook Time Press the OK Icon 5 Select desired microwave power by pressing Microwave Power Entry Box Choose from options ranging from 0...

Page 22: ...apids IA 52404 Page 22 of 80 Part No 16400033 Original Instructions Programming Manual Programming Manual Organization Folders Manual Organization Tabs Oven Programming USB Flash Drive Oven Programming Wi Fi and Ethernet 5 ...

Page 23: ...ok anything 5 Open the oven door and place the food in the oven Press the Green Check Mark Icon to begin cooking with the revised Menu Item settings The display will return to the Manual Input Screen at the end of the Cook Cycle 6 Press the Right Arrow Icon to Save any changes made to Cook Settings and move to the next screen 7 If desired choose a different background color Press the Right Arrow I...

Page 24: ...ired change the name of the recipe 7 Press the Green Check Mark Icon to Save changes 8 Press the Green Check Mark Icon once more to Save the revised folder Manual Organization Folders Manually Create a Recipe Folder Note You may also create folders using the ACP Programming Application 1 Press the Blue Menu Icon at the bottom of the screen 2 Press the Manage Folders option in the Menu Screen 3 To ...

Page 25: ...it an Existing Recipe Tab Note You may also edit tabs using the ACP Programming Application 1 Press the Blue Menu Icon at the bottom of the screen 2 Press the Manage Tabs option in the Menu Screen 3 Press the desired tab to be edited Change the image on the tab Press the Choose Icon option Select an image Press the Green Check Mark Icon Add text to the tab Press the Enter Text on Tab option Enter ...

Page 26: ...Drive and ready to share or open in ACP Programming Application Open Menu in ACP Programming Application Note For more comprehensive instructions see ACP Programming Application User Guide online 1 Insert Flash Drive into USB port on computer 2 Open ACP Programming Application 3 Select File then Open Navigate to Flash Drive 4 Select the Menu file and Open Import Menu via USB Flash Drive 1 Press th...

Page 27: ...dress exactly as it appears on oven screen 4 Enter your log in information 5 The oven and computer are now connected Transfer Recipe Information via Wi Fi Ethernet 1 After connecting the computer to the oven and logging in click on the Upload Recipes tab in browser window Caution Uploading a new file will overwrite existing items on oven To ensure items are not lost first backup files by exporting...

Page 28: ... 2018 ACP Inc Cedar Rapids IA 52404 Page 28 of 80 Part No 16400033 Original Instructions Care and Cleaning 6 ...

Page 29: ...or with care Allow oven utensils and accessories to cool before cleaning Oven utensils and accessories become hot during operation Failure to maintain the oven in a clean condition could lead to deterioration of the surface that could adversely affect the life of the appliance and possibly result in a hazardous situation Best Practices DO clean oven daily DO use non caustic cleaner DO wear protect...

Page 30: ...g cover with a damp cloth sprayed with cleaner and apply gentle pressure to clean cavity ceiling cover 5 Clean perforated area with damp cloth sprayed with cleaner 6 WIPE OVEN INTERIOR Using a damp clean towel wipe the oven interior then rinse the towel and wring dry Repeat 2 3 times to remove remaining oven cleaner and particles from the oven 7 APPLY OVEN SHIELD When oven is clean spray a thin la...

Page 31: ... 2018 ACP Inc Cedar Rapids IA 52404 Page 31 of 80 Part No 16400033 Original Instructions User Options Default User Options 7 ...

Page 32: ...a Check Filter Cleaned box to confirm clean b Select Dismiss to close popup Note If Filter Cleaned box is checked reminder time resets Necessary cleaning frequency of air filters dependant on microwave use and environmental conditions Once frequency is determined set the user option for appropriate time frame Air filters and vents must be cleaned regularly to prevent overheating of oven Refer to 1...

Page 33: ...e date entry can be customized by day month and year MM DD YYYY DD MM YYYY MM DD YYYY DD MM YYYY Temperature Scale Celsius Fahrenheit Celsius Fahrenheit Preheat Temperature 2000F 5200F 930C 2700C 520 F 270 C 270 C 520 F Keypad Activation 30 seconds 60 seconds 2 minutes 30 seconds 60 seconds 2 minutes Brightness Low Med High Low Med High Key Beep On Off On Off Volume Low Medium High Low Medium High...

Page 34: ... 2018 ACP Inc Cedar Rapids IA 52404 Page 34 of 80 Part No 16400033 Original Instructions Firmware Update Procedure 8 ...

Page 35: ...ware Version 7 Insert the USB Flash Drive with the new firmware into the USB port 8 A box will appear in the lower portion of the screen Rev xxxx Available Begin Update 9 Press this box to begin firmware update The screen will now display Entering Standby Mode for a few seconds and then the screen will go blank Continue to wait 10 The screen will blink then a few seconds later the Startup logo wil...

Page 36: ...CP logo and Green Power Icon appear remove the Flash Drive and press the Green Power Icon 13 Press the Blue Menu Icon and enter 1 3 5 7 9 to access Service Mode 14 Verify the Software Version displayed is new version 15 Press the Home Icon 16 The Firmware Update is complete 12 Firmware Update Procedure ...

Page 37: ... 2018 ACP Inc Cedar Rapids IA 52404 Page 37 of 80 Part No 16400033 Original Instructions Troubleshooting Before Calling for Service Service Test Mode Oven Tests Error Codes Troubleshooting Chart 9 ...

Page 38: ...ure oven is preheated Open and close door press pad again Oven fan turns on while oven is not preheating or cooking Normal operation When I turn the oven OFF the display is still lit Normal operation Clean Filter displays This is normal and will appear for 24 hours Frozen oven display Oven display needs to reset Models without reset button Unplug oven Wait 5 seconds Plug back in Models equipped wi...

Page 39: ...tests will not work properly With the PIN Code enabled 1 Press Green start pad 2 Press the Blue Menu Icon and the PIN Code prompt will display 3 Enter in order 1 3 5 7 9 the odd numbers and the Service Mode is initiated With the PIN Code not enabled If the PIN Code is not enabled it must be enabled in the User s Options 1 With oven on press the Blue Menu Icon at the bottom of the screen and the PI...

Page 40: ... is initiated Once the Service Mode is initiated a menu of options and information is displayed The Menu Screen can be navigated by swiping up or down if needed Some components can be activated from this Menu See example of Magnetron 1 by pressing Start to start or Stop to stop Pressing the Back Arrow Icon will return back one screen Pressing the Home Icon returns to opening screen 7 Home Back Lef...

Page 41: ... stopped and started by pressing the Start or Stop Icon The current amperage being drawn by the Convection Fan Motor on high speed 3 amps and a high speed fan motor operating noise is considered normal Cooling Fan Motors can be stopped and started by pressing the Start or Stop Icon The current amperage being drawn by both the Cooling Fan Motors 1 3 amps is considered normal A failed Cooling Fan mo...

Page 42: ...power for 33 seconds 5 At the end of the cycle remove the container from the oven 6 Once again stir the water for 10 seconds take another measurement and record 7 Subtract the starting water temperature from the ending water temperature to obtain the temperature rise 8 If the temperature rise meets or exceeds the nominal microwave energy output rating found on the oven s model serial tag the test ...

Page 43: ...ral CDRH FDA DHHS and State regulations Tools required for test 600ml glass beaker Supply of cold water 68 F 9 F 20 C 5 C Microwave leakage meter NOTE Read and understand the following information and the procedure before performing the measurements Make sure the survey meter you are using has been calibrated and is suitable for measuring frequencies of 2 450 MHz Leakage meter should initially be ...

Page 44: ...ss the OK Icon 6 Select desired microwave power by pressing Microwave Power Entry Box Enter 100 7 Select desired fan speed by pressing the Fan Speed Entry Box Enter 0 8 Press the Green Check Mark to begin 9 Move the Meter Probe at 1 sec over all door oven gaps NOTE Water must be changed every 30 seconds to prevent boiling If water boils the results may be inaccurate 10 Make a note of any area that...

Page 45: ... if subjected to sub freezing temperatures G2 Open Magnetron TCO Board Senses an Open Magnetron TCO Inspect Cooling Fans operation and airflow TCO s and Wiring H0 Zero Cross Failure No or Intermittent Voltage at J1 Connector on Main Control Test Main Control and wiring Repair or replace as needed H2 Invalid System State Test Main Control Board and replace as needed H3 Invalid EEPROM FLASH Test Mai...

Page 46: ...testing HV Rectifier Diode DO NOT Test Live See HV Rectifier testing Magnetron TCO Error Code G2 Allow oven to cool TCO resets at 275 F 125 C Check for blocked cooling air Check for Cooing Fan operation See Magnetron TCO testing Oven will not operate Convection Convection Heater Check for line voltage across terminals See Convection Heater testing Heater Triac Check power input See Triac Testing C...

Page 47: ... secondary winding of the Transformer are extremely dangerous The high voltages and currents at the filament and secondary winding of the transformer are extremely dangerous Never make any direct voltage or current measurements at these winding It is very dangerous to work near this part when the oven is on or even if this circuitry has been switched off All High Voltage Capacitors must be dischar...

Page 48: ...ve the eight 8 Screws 4 along top 2 on each side using a Phillips Head Screwdriver or 1 4 Hex Socket 2 Slide Panel towards rear until it disengages with front 3 Lift off Side Panels 1 Remove Top Panel 2 Remove two 2 Screws per side using a Phillips Head Screwdriver or 1 4 Hex Socket 3 Slide Panel towards rear until it disengages with front 4 Lift off Rear Panel 1 Remove Top and Side Panels 2 Remov...

Page 49: ... Right Left and Rear Panels see Panel Removal 3 Because of proximity to HV circuit discharge all HV Capacitors 4 Using a 1 4 Hex Socket remove two 2 Screws from each side where the duct connects to the Magnetrons 5 From the rear remove the two 2 Screws connecting the Duct to the Antenna Chamber Duct 6 Disconnect Wires running through Grommet making a note of where they connect 7 Lift out 8 Replace...

Page 50: ...With oven disconnected from the Power Supply disconnect the Wires from the device Check for continuity between Terminals 11 and 12 If oven temperature is below tripping point and there is no continuity press the Reset Button If still no continuity replace TCO Removal and Replacement 1 Disconnect oven from Power Supply 2 Remove Top Right Left and Rear Panels see Panel Removal 3 For better access re...

Page 51: ...rom the Power Supply disconnect the Wires from the device Check resistance between Terminals and each Terminal to Ground MT1 to Gate À50Ω MT1 to MT2 Open MT2 to Gate Open All Terminals to Ground Open Removal and Replacement 1 Disconnect oven from Power Supply 2 Remove Top Right Left and Rear Panels see Panel Removal DANGER All High Voltage Capacitors must be discharged before performing this proce...

Page 52: ...ven disconnected from the Power Supply disconnect the Wires from the device Autotransformer Check resistance between terminals 230 to 0 38 Ω 208 to 0 35 Ω 120 to 0 25 Ω not used All Terminals to Ground Open Snubber Continuity Open Capacitance 0 09μf Removal and Replacement 1 Disconnect oven from Power Supply 2 Remove Top Right Left and Rear Panels see Panel Removal 3 Note all Wire locations 4 Remo...

Page 53: ...ected from the Power Supply disconnect the Wires from the device Check resistance across Coil RD to BK À550 Ω 3 16 terminals Check continuity across contacts COM to NC Continuity COM to NO Open Removal and Replacement 1 Disconnect oven from Power Supply 2 Remove Top Right Left and Rear Panels see Panel Removal 3 Note all Wire locations 4 Remove all Wires from the device 5 Remove two 2 Screws secur...

Page 54: ...k resistance across Coil 0 to 1 À550 Ω Check continuity across contacts 2 to 4 Open NO 6 to 8 Open NO Removal and Replacement 1 Disconnect oven from Power Supply 2 Remove Remove Top Right Left and Rear Panels see Panel Removal 3 Remove Wires from the device noting their locations 4 For ovens with two 2 Magnetrons remove one of the HV Transformers for better access see HV Transformer Removal and Re...

Page 55: ...arged before performing this procedure The HV Capacitor is used in the Microwave Circuit to provide the high voltage to supply the Magnetron Depending on the model there may be 1 or 2 HV Capacitors Testing Capacitance across the Terminals 0 88μf 3 Continuity from each Terminal to the outer case Open Removal and Replacement 1 Disconnect oven from Power Supply 2 Remove Top Right Left and Rear Panels...

Page 56: ...try has been switched off DANGER All High Voltage Capacitors must be discharged before performing this procedure The HV Diode is used in the Microwave circuits to provide High Voltage DC to the Magnetron Testing Remove Diode from Capacitor Resistance One side to other Open Swap Leads 50kΩ Note Meter must have 6VDC battery to measure effectively Removal and Replacement 1 Disconnect oven from Power ...

Page 57: ...agnetron TCO protects the Magnetron from an overheat situation Testing Remove Wires from device Across Terminals Continuity 300 F 320 C Opens 300 F 149 C Resets 275 F 125 C Removal and Replacement 1 Disconnect oven from Power Supply 2 Remove Top and Right or Left Side Panel see Panel Removal 3 Remove Wires from device 4 Remove two 2 Torx head Screws using a T 15 Driver 5 To replace reverse these s...

Page 58: ...oltage Capacitors must be discharged before performing this procedure The Magnetron is a high powered vacuum tube that generates microwaves Testing Remove Wires from device Resistance Terminal to Terminal 1Ω Terminal to Chassis Open Removal and Replacement 1 Disconnect oven from Power Supply 2 Remove Top Right Left and Rear Panels see Panel Removal 3 Remove Rear Exhaust Duct see Rear Exhaust Duct ...

Page 59: ...the cooking chamber Testing Remove Wires from device Resistance Across Terminals 12kΩ Removal and Replacement 1 Disconnect oven from Power Supply 2 Remove Top Panel see Panel Removal 3 Remove Wires 4 Remove three 3 Screws from Mounting Bracket using 1 4 Socket 5 Remove two 2 Screws from Stirrer Motor using 1 4 Socket 6 Remove E Clip from Motor Shaft to remove Drive Gear 7 To replace reverse these ...

Page 60: ...rrer Motor Removal 7 Remove the Stirrer Motor Mounting bracket by removing four 4 11 32 9mm Hex Nuts Lift up and out 8 Remove 11 32 9mm Hex Nuts on each side of Wave Guide 9 Inside the oven remove the Top Forced Air Plate by removing four 4 Phillips Head Screws in each corner 10 Loosen but do not remove four 4 Phillips Head Screws securing the toggles securing the Microwave Window Gently pry the M...

Page 61: ...er has 2 purposes It steps up the line voltage to the high voltage needed to power the Magnetron and it steps down the line voltage to supply the low voltage needed by the Magnetron Filament Testing Remove Wires from the device Resistance Com to 208 2Ω Com to 230 2Ω 5 to 6 1Ω Com to Ground Open 208 to Ground Open 230 to Ground Open 5 to Ground Open 6 to Ground Open 4 to Chassis Ground 62 5Ω 5 Remo...

Page 62: ...BU to RD Continuity Door Closed BU to RD Open Removal and Replacement 1 Disconnect oven from Power Supply 2 Remove Top Panel see Panel Removal 3 Remove four 4 Screws securing Control Board Mounting Bracket with 1 4 Socket or Phillips Head Screwdriver but do not disconnect Wiring Move Control Board Assembly to provide access 4 Remove Wires from Switch 5 Remove two 2 Screws securing Primary Switch t...

Page 63: ...nitor VT to OR Continuity Secondary Note Primary Switch MUST actuate first when opening door Removal and Replacement 1 Disconnect oven from Power Supply For Secondary and Monitor Switches 2 Remove Top and Right Side Panels see Panel Removal 3 Remove 11 32 9mm Hex Nut securing Switch Assembly 4 Lift Bracket off Mounting Stud and slide out 5 Remove Wires noting their locations 6 Replace with Kit P N...

Page 64: ...en performing tests with line voltage applied With line voltage applied Voltage J1 1 WH to J1 3 BK Line Voltage J2 1 RD to J2 5 24 VDC J2 1 RD to J2 6 24 VDC J2 1 RD to J2 7 24 VDC Removal and Replacement 1 Disconnect oven from Power Supply 2 Remove Top and Right Side Panels see Panel Removal 3 Remove Wire Harnesses from Power Supply Board 4 Remove two 2 Screws securing Mounting Bracket 5 Disengag...

Page 65: ...he oven Testing Use the Oven Test Mode Removal and Replacement 1 Disconnect oven from Power Supply 2 Remove Top Panel see Panel Removal 3 Remove four 4 Screws securing Mounting Bracket with 1 4 Socket or Phillips Head Screwdriver 4 Remove all Wiring Harnesses including Ribbon Harness to Display 5 Disengage seven 7 Retaining Clips securing Main Control Board 6 To replace reverse these steps ...

Page 66: ...ols is given by the user and information is output to the display Testing Use the Oven Test Mode Removal and Replacement 1 Disconnect oven from Power Supply 2 Remove Top Panel see Panel Removal 3 Remove Main Control Board see Main Control Board Removal 4 Remove all Wiring Harnesses from Touch Screen Display Board 5 Remove four 4 Screws securing Touch Screen Display Board to Mounting Bracket 6 To r...

Page 67: ... temperature Testing With Connector Plug disconnected test for resistance across the two 2 Wires 70 F 23 9 C 1100 Ω 350 F 176 7 C 1650 Ω Removal and Replacement 1 Disconnect oven from Power Supply 2 Remove Top Panel see Panel Removal 3 Disconnect Connector Plug 4 Remove two 2 11 32 9mm Hex Nuts securing Temperature Sensor to top of oven 5 Pull Temperature Sensor up and out to remove 6 To replace r...

Page 68: ... Supply 2 Remove Top Right Left and Rear Panels see Panel Removal 3 Remove Rear Exhaust Duct see Rear Exhaust Duct Removal 4 Remove four 4 Screws securing component Mounting Bracket Remove two 2 Screws joining each half of Bracket Move each side out of the way Remove Wires as needed noting their locations 5 Disconnect Electrical Connectors to Motor 6 Remove Fiberglass Tape from around perimeter of...

Page 69: ...e Wires removed test between the two 2 Terminals Resistance 15 Ω Removal and Replacement Follow procedure for Convection Motor Steps 1 10 If replacing Heater only Add steps 1 Remove two 2 Hex Head Screws securing Heater Clips to assembly 2 Remove three 3 Hex Head Screws securing Heater Mount to assembly 3 Remove Heater from assembly Replacement Heater P N 59174593 4 Reverse these and Convection Mo...

Page 70: ...o BK 695 Ω BR to BK 900 Ω Removal and Replacement 1 Disconnect oven from Power Supply 2 Remove Top and Right Side Panels see Panel Removal 3 Disconnect Harness Plug to Cooling Fans 4 Carefully lay oven on left side to access bottom CAUTION Oven is heavy 5 Remove Phillips Head Screw securing Cooling Fan Access Panel Disengage Panel and remove 6 Remove six 6 Screws securing Cooling Fan Mounting Plat...

Page 71: ... Motor Run Capacitors alter the current going to the Cooling Fan Motors Testing Discharge Capacitors With Wires removed check for capacitance 1 5 μf 5 Removal and Replacement 1 Disconnect oven from Power Supply 2 Remove Top and Right Side Panels see Panel Removal 3 Discharge Capacitors 4 Remove Wires 5 Remove Hex Nut with 1 2 13mm Wrench 6 To replace reverse these steps ...

Page 72: ... 2018 ACP Inc Cedar Rapids IA 52404 Page 72 of 80 Part No 16400033 Original Instructions Wiring Diagrams Schematics 11 ...

Page 73: ... 2018 ACP Inc Cedar Rapids IA 52404 Page 73 of 80 Part No 16400033 Original Instructions ELECTRICAL SCHEMATIC Models ARX1 ARX1BL MRX1 MRX1BL Wiring Diagrams Schematics ...

Page 74: ... 2018 ACP Inc Cedar Rapids IA 52404 Page 74 of 80 Part No 16400033 Original Instructions WIRING DIAGRAM Models ARX2 ARX2BL MRX2 MRX2BL Wiring Diagrams Schematics ...

Page 75: ... 2018 ACP Inc Cedar Rapids IA 52404 Page 75 of 80 Part No 16400033 Original Instructions ELECTRICAL SCHEMATIC Models ARX2 ARX2BL MRX2 MRX2BL Wiring Diagrams Schematics ...

Page 76: ... 2018 ACP Inc Cedar Rapids IA 52404 Page 76 of 80 Part No 16400033 Original Instructions Wiring Diagrams Schematics WIRING DIAGRAM Models ARX2 ARX2BL MRX2 MRX2BL ...

Page 77: ... 2018 ACP Inc Cedar Rapids IA 52404 Page 77 of 80 Part No 16400033 Original Instructions Notes ...

Page 78: ... 2018 ACP Inc Cedar Rapids IA 52404 Page 78 of 80 Part No 16400033 Original Instructions Notes ...

Page 79: ... 2018 ACP Inc Cedar Rapids IA 52404 Page 79 of 80 Part No 16400033 Original Instructions Notes ...

Page 80: ... 2018 ACP Inc Cedar Rapids IA 52404 Page 80 of 80 Part No 16400033 Original Instructions www acpsolutions com ...

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