ACP AMSO Series Service Manual Download Page 1

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Service

Commercial Microwave Oven
AMSO & MSO Models

Service Manual

This Base Manual covers all

Commercial Microwave Ovens.

Refer to individual Technical Sheet

for information on specific models.

MSO22
MSO35

MSO35OS

MSO5211
MSO5351
MSO5353

AMSO22
AMSO35

AMSO5353

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.

16400029

Revision 1

December 2015

Summary of Contents for AMSO Series

Page 1: ... Sheet for information on specific models MSO22 MSO35 MSO35OS MSO5211 MSO5351 MSO5353 AMSO22 AMSO35 AMSO5353 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 16400029 Revision 1 December 2015 ...

Page 2: ...i 16400029 Revision 1 December 2015 ...

Page 3: ... Cleaning 5 Quick Start Reference Guide 6 7 User Options 8 Cooking Instructions 9 Component Location 10 15 Door and Door Switch Adjustment 16 18 Service Test Mode 19 Microwave Power Test 20 Component Specifications 21 24 Wiring and Schematic Diagrams 25 29 16400029 Revision 1 December 2015 ...

Page 4: ...ervice personnel IMPORTANT SAFETY INSTRUCTIONS For additional product documentation or more detailed operating instructions visit www acpsolutions com CONTACT INFORMATION Any questions or to locate an authorized ACP servicer call ACP ComServ Service Support Inside the U S A or Canada call toll free 866 426 2621 Outside the U S A and Canada call 319 368 8120 Email Commercialservice acpsolutions com...

Page 5: ...e fuse or circuit breaker panel e DO NOT use the cavity for storage DO NOTleave paper products cooking utensils or food in the cavity when not in use 17 For commercial use only 18 It is hazardous for anyone other than a competent person to carry out any service or repair operation that involves the removal of any cover which gives protection against exposure to microwave energy 19 If the door or d...

Page 6: ...0 Pierce skin of potatoes tomatoes and similar foods before cooking with microwave energy When skin is pierced steam escapes evenly 11 Do not heat sealed containers or plastic bags in oven Food or liquid could expand quickly and cause container or bag to break Pierce or open container or bag before heating 12 Do not heat baby bottles in oven 13 Baby food jars shall be open when heated and contents...

Page 7: ...ºC 35ºF 19 5ºC 21ºF 11 7ºC 35ºF 19 5ºC 35ºF 19 5ºC Operating frequency 2450 MHz 2450 MHz 2450 MHz 2450 MHz 2450 MHz Power Consumption Cook condition microwave 3500 Watts 5100 Watts 3300 Watts 5400 Watts 5200 Watts Dimensions Cabinet Width 25 5 8in 650mm 25 5 8in 650mm 25 5 8in 650mm 25 5 8in 650mm 25 5 8in 650mm Height 18 5 8in 472mm 18 5 8in 472mm 18 5 8in 472mm 18 5 8in 472mm 18 5 8in 472mm Dept...

Page 8: ...ny length of time Do NOT allow cooking residues to remain in oven cavity Do NOT use abrasive cleansers or cleaners containing ammonia These could damage finish Do NOT use caustic cleaning products or those containing ammonia phosphates or chlorine in oven These coulddamage oven Use non caustic cleaner NEVER pour water into microwave oven bottom Do NOT use water pressure type cleaning systems For m...

Page 9: ...6 QUICK START REFERENCE GUIDE 16400029 Revision 1 December 2015 ...

Page 10: ...7 16400029 Revision 1 December 2015 ...

Page 11: ...8 USER OPTIONS 16400029 Revision 1 December 2015 ...

Page 12: ...COOKING INSTRUCTIONS 9 16400029 Revision 1 December 2015 ...

Page 13: ...NTROL KNOB Encoder board has to be removed to remove knob DOOR SWITCH REMOVABLE DIVIDER SHELF Slides Out REMOVABLE TRAY Strong Suction Cup ANTENNA COVER 14 Clips L E D L E D Front of Oven 16400029 Revision 1 December 2015 COMPONENT LOCATIONS ...

Page 14: ...WER RELAY POWER RELAY TRANSFORMER MAIN FUSES OVEN THERMAL CUTOUT under cover MONITOR RELAY BOARD MONITOR RELAY BOARD ANTENNA MOTOR CONTROL BOARD ANTENNA MOTOR DISPLAY BOARD Top of Oven 16400029 Revision 1 December 2015 ...

Page 15: ...CAPACITORS DOOR SPRING Secondary Switch RIGHT SIDE HIGH VOLTAGE SYSTEM FUSES Top Fuse Top System Monitor Switch DOOR HINGE ARM Right Side of Oven Primary Switch LED Light 16400029 Revision 1 December 2015 ...

Page 16: ...13 Primary Switch Secondary Switch DOOR HINGE ARM CAPACITORS DOOR SPRING HIGH VOLTAGE SYSTEM FUSES Top Top System LED LIGHT Monitor Switch Left Side of Oven 16400029 Revision 1 December 2015 ...

Page 17: ...NSFORMER MAGNETRON 3 MAGNETRON BLOWER TRANSFORMER CAPACITORS DIODES TRANSFORMER MAGNETRON 4 MAGNETRON MAIN FUSES BLOWER HOUSING H V FUSE each Transformer Back of Oven Removed MAGNETRON TCO each Magnetron 16400029 Revision 1 December 2015 ...

Page 18: ...15 EXHAUST OUTLET COVER POWER CORD EXHAUST SCREEN Back of Oven 16400029 Revision 1 December 2015 ...

Page 19: ...ms as shown in Figure 1 3 While holding the door closed carefully remove both door springs and open the door the full position 4 While providing support to the open door remove the Hole Plugs and Shoulder Bolts using the 2mm Hex Key Wrench as shown in Figure 2 and remove the Hinge Arms Figure 1 16400029 Revision 1 December 2015 ...

Page 20: ...sition and install the new TC Hex Screws finger tight 7 Place a small drop of the provided Blue Threadlock to the threads of the new Shoulder Bolts and reattach Door Arms Hole Plugs and Door Springs Door Arms will be out of adjustment from the marks made in Step 2 See Figure 3 16400029 Revision 1 December 2015 ...

Page 21: ...observe the hinge arm When the Hinge Arm aligns with the mark made in Step 2 tighten the Door Hinge TC Hex Screws securely and repeat on the other side See Figure 4 9 Inspect door operation and alignment with cabinet and make any necessary adjustments 10 Test oven operation and perform microwave leak test 16400029 Revision 1 December 2015 ...

Page 22: ...tic Use Power Test Output 9 degree F Rise 5 Cycles on off the LED lights along with Fan and Antenna Motors Aux Output ON 7 Magnetron Tube Hours Magnetron Hours 0 8 Door Cycle Count 1 equals door open and closed Door Cycles 3210 9 Clears Door Cycles and Magnetron Hours Press START to Clear serv info 0 Clears Call Service Alarm CALL SERVICE Alarm Cleared ALL OTHER PADS May access engineering modes D...

Page 23: ...l serial tag the test is complete If the temperature rise fails to meet the minimum temperature rise test the line voltage to verify it is correct Then repeat steps 1 6 making sure to change the water If the temperature rise fails to meet the minimum temperature rise again the oven will require service Important Notes Low line voltage will cause low temperature rise power output Ovens must be on a...

Page 24: ...24 Ω Approximately 26 Ω Monitor Relay Board 2 Unplug Connector J 2 Check resistance from J2 1 and J2 4 With 24vdc applied to J1 1 and J1 2 No voltage at J1 1 and J1 2 Open Infinite Ω Continuity Power Relay 2 Measure resistance from Terminal 0 to Terminal 1 coil Approximately 6 to 7 MΩ Diode in circuit Note If using a digital meter it must contain a battery of 6 volts minimum WITHOUT line voltage a...

Page 25: ...s Meter should momentarily deflect towards zero then return to over 5 MΩ If no deflection occurs or if continuous deflection occurs replace capacitor Terminal to Case Infinite resistance Magnetron Discharge Capacitors Remove wires from magnetron and connect ohmmeter to terminals Also check between each terminal and ground Magnetron 1 Top Right Magnetron 2 Top Left Magnetron 3 Bottom Right Magnetro...

Page 26: ...nal to Terminal Open Infinite Closed Continuity Encoder Board NOTE KNOB DOES NOT PULL OFF FROM FRONT ENCODER HAS TO BE REMOVED TO ACCESS TAB ON KNOB Terminals 1 2 Terminals 1 4 Closed Continuity w Knob pushed in Opens Closes as Knob is Rotated Magnetron Relay Board 4 CAUTION LIVE TEST USE HANDS FREE TESTS WHILE IN COOK MODE J1 1 to J1 2 J2 1 or 2 to J2 6 or 7 Test for output voltage J3 3 to either...

Page 27: ...Error Code Corrective Action 1 Replace HV LV Board 2 Replace HV LV Board 3 Replace HV LV Board 4 Replace Touch Panel 5 Keypad or Dial Encoder Stuck Line Filter Line to Line Load to Load Line to Load Any Terminal to Earth 8MΩ 8MΩ Closed Continuity Open Infinite 24 16400029 Revision 1 December 2015 ...

Page 28: ...MSO22 AMSO22 MSO35 AMSO35 25 SCHEMATICS DIAGRAMS 16400029 Revision 1 December 2015 ...

Page 29: ...MSO5211 MSO5351 26 SCHEMATICS DIAGRAMS 16400029 Revision 1 December 2015 ...

Page 30: ...MSO22 AMSO22 MSO5211 MSO35 AMSO35 MSO5351 27 SCHEMATICS DIAGRAMS 16400029 Revision 1 December 2015 ...

Page 31: ...MSO5353 AMSO5353 28 SCHEMATICS DIAGRAMS 16400029 Revision 1 December 2015 ...

Page 32: ...MSO5353 AMSO5353 29 SCHEMATICS DIAGRAMS 16400029 Revision 1 December 2015 ...

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