Table of Contents
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Service
Compact Commercial
Microwave Oven
This manual replaces RS2230003 Rev. 1
Service Manual for
®
Amana
®
Menumaster
This manual is to be used by qualified appliance
technicians only. Amana does not assume any
responsibility for property damage or personal
injury for improper service procedures done by an
unqualified person.
This Base Manual covers Commercial
Microwave Ovens with 120/230 V, 60 Hz.
Refer to individual Technical Sheet for
information on specific models.
This manual includes, but is not limited to
the following:
CRC21T2
CRC18T2
CRC18T2SD
CRC12T2
CRC12T
CRC10T2
CRC10T
FSC18VP
FSC12VP
FSC10VP
RS2230003
Revision 2
December 1998
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Summary of Contents for Amana CRC21T2
- Page 1 Service Manual for ® Amana ® Menumaster This manual is to be used by qualified appliance technicians only. Amana does not assume any responsibility for property damage or personal injury for improper service procedures done by an unqualified person. RS2230003 Revision 2...
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Page 2: Important Product Information
Important Product Information WARNING WARNING To avoid risk of electrical shock, injury, or death, make Precautions to be observed before and during sure these grounding instructions are followed. servicing to avoid possible exposure to excessive microwave energy. Grounding Instructions (A) Do not operate or allow oven to be operated with WARNING the door open. -
Page 3: Table Of Contents
Deactivating Control Panel ........17 Figure 1 .............. 33 Reactivating Control Panel ........17 Figure 2 .............. 34 Figure 3 .............. 35 Amana Appliances • 2800 220thTrail • Amana, Iowa • 52204-0001 • Printed in the U.S.A. RS2230003 Rev. 2... -
Page 4: Important Information
(such as exposure to electrical shock) may result. CAUTION Amana will not be responsible for any injury or property damage from improper service procedures. If prefroming service on your own product, assume responsibility for any personal injury or property damage which may result. -
Page 5: Important Safety Information
Amana Service Department immediately for further 3. Oven should never be operated if door does not fit direction. Amana will contact the proper government properly against seal, hinge/hinge bearings are agency upon verification of test results. damaged or broken; choke is damaged, (pieces 12.Install or locate this equipment ONLY in accordance... -
Page 6: Precautions To Avoid Possible Exposure
Important Safety Information CAUTION To avoid personal injury or property damage, observe the following: 7. Do not use regular cooking thermometers in oven. 1. Briskly stir or pour liquids before heating with microwave energy to prevent spontaneous boiling Most cooking thermometers contain mercury and may cause an electrical arc, malfunction, or or eruption. - Page 7 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.
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Page 8: Product Information
Product Information Antenna Blade Auto Transformer Distributes microwave energy throughout the cavity. Auto transformer in this unit provides a voltage of 120, 208, or 230 VAC. Blower/Fan Assembly Transformer High Voltage Circulates cooling air throughout the microwave oven compartment and cavity. High voltage transformer is used in this unit, which supplies high voltage A.C. -
Page 9: Installation
Installation Unpacking Oven Grounding Instructions • Remove packing and printed material from oven NOTE: Do not under any circumstances cut or remove cavity. grounding prong from the plug or bend power • Inspect oven for damage such as dents prongs to fit receptacle other than one shown for in door or inside oven cavity. -
Page 10: Care And Cleaning
Care and Cleaning Changing Oven Light Bulb CAUTION To avoid electrical shock hazard unplug power cord or open circuit breaker to microwave oven before replacing light bulb. After replacing light bulb, reconnect power. CAUTION To avoid burns and cuts, wear gloves to protect hands should bulb break. -
Page 11: Cleaning Air Intake Filter
Care and Cleaning 3. Wash shield in hot, soapy water. Rinse and CAUTION dry thoroughly. To avoid oven door damage, do not lift oven by oven • Do not wash splatter shield in dishwasher. door. • Do not use abrasive cleaners. 4. -
Page 12: Control Pads
Control Pads Amana Units Menumaster Units TIME ENTRY POWER LEVEL • Use to enter heating time without changing • Use to select power level. Oven can heat at full or preprogrammed number pads. reduced power. If oven power level is set to 0% oven does not heat for programmed time. -
Page 13: Displays
Displays • Shows after oven is plugged in. Open oven door to clear. READY • “Pb” or “Pd”—Indicates programming mode and current menu. See “Programming” section of manual for programming procedure. READY • "bP1"—Indicates menu "b" in programming mode, and •... -
Page 14: Quick Reference Instructions
Quick Reference Instructions Read “Important Safety Information” before using “Quick Programming Multiple Heating Stages Reference Instructions”. If there are unanswered questions, 1. Open oven door. 2. Press pad 1 for approximately 5 seconds. see detailed sections of this manual. 3. Press MENU b/d pad to select preprogrammed menu Instructions are written for factory programmed ovens. -
Page 15: Operation
Operation Power-up Display Operating Preprogrammed Pads After equipment is plugged in, display shows 4 large Equipment has 2 menus with 10 preprogrammed number dashes and 1 small dash. Open and close oven door to pads. clear display and activate pads. 1. -
Page 16: Programming Instructions
Programming Instructions Reviewing Preprogrammed Pads 6. Press START pad. • Oven operates and time counts down. 1. Open oven door. • Display shows “b” or “d” and “READY”. • Display shows heating time, “POWER”, “COOK LEVEL”. • Fan and light operate. •... -
Page 17: Multiple Heating Stages
Programming Instructions Multiple Heating Stages 4. Press MENU b/d pad. • “ dddd ” and pad number show in display. Oven can be programmed to perform 4 independent heating cycles without interruption. 5. Press START pad to save in oven memory. •... -
Page 18: User Options
Programming Instructions User Options 4. Press START pad to advance to next option. See table for options. 1. Open oven door. Display shows 5. Press number pad (0,1-3) to change option. “MENU b OR d – READY”. 6. Press START pad to save changes. •... -
Page 19: Component Testing Procedures
Approximately 3400 Wire Harness Test continuity of wires. Indicates continuity Auto Transformer Discharge Capacitors Remove all wires from terminals. Measure resistance from: 230 to 0 42.4 CRC21T2, CRC18T2, 208 to 0 38.6 CRC18T2SD 120 to 0 21.5 FSC18VP RS2230003 Rev. 2... - Page 20 Less than 1 Terminal 4 to Ground screw on transformer Terminal 4 to any other terminal Infinite resistance should be Violet indicated, if not replace transformer. CRC21T2, CRC18T2, Terminal 1 Common CRC18T2SD Terminal 2 230 V FSC18VP Gray Terminal 3 208 V...
- Page 21 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 it. Illustration Component Testing Results Controller board A—Not used B to C—Line voltage B—Normally open terminal on primary * (Standby Condition) switch B to C—0 volts...
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Page 22: Microwave Power Test
Test Equipment Needed: 5. Subtract the starting water temperature (Step 2) from • Amana power test kit R0157397 (Fahrenheit) or the ending water temperature (Step 4) to obtain the • Menumaster power test kit M95D5 (Centigrade) temperature rise. -
Page 23: Equipment
WARNING DANGER Check for radiation leakage after servicing. Should the leakage be more than 4mW/cm inform Amana To avoid risk of personal injury or death avoid immediately. After repairing or replacing any radiation contacting any high voltage components. safety device, keep a written record for future reference, as required by D.H.H.S. -
Page 24: Troubleshooting
Troubleshooting Initial Power Up Apply power with door closed. Open fuse. Relays click. Open top magnetron TCO. Open bottom magnetron TCO. Inoperative interlock switch assembly (logic). Inoperative control board. Display Broken or improper wire connections. Proceed to "Standby" condition. RS2230003 Rev. 1... -
Page 25: Standby Condition
Troubleshooting Standby Condition Open oven door. Display READY Inoperative interlock switch assembly (logic). Inoperative control board. Broken or improper wire connections. Inoperative light bulb. Inoperative light socket. Oven light is on? Inoperative auto-transformer. Inoperative control board. Broken or improper wire connections. Inoperative blower motor. -
Page 26: Cook Condition
Troubleshooting Cook Condition Place cup of water in oven and close oven door. Display READY Beep not programmed into oven. Push pad number 1. Pad not programmed. Pad beeps when pushed? Inoperative touch panel. Broken or improper wire connections. 5. Inoperative interlock switch assembly (logic). Display POWER COOK... -
Page 27: Disassembly
Disassembly To avoid the risk of electrical shock, personal injury, or WARNING death, disconnect power to oven and discharge capacitors before following any disassembly procedure. Door Removal 1. Unplug power cord from power source. 2. Remove outer case cover. 3. Remove screws securing door hinges. 4. -
Page 28: Door/Interlock Switch Adjustment/Replacements
Disassembly To avoid the risk of electrical shock, personal injury, or WARNING death, disconnect power to oven and discharge capacitors before following any disassembly procedure. Door / Interlock Switch Adjustment / Replacement 1. Remove outer case wrapper with caution not to damage components on circuit board. -
Page 29: Back Panel
Disassembly To avoid the risk of electrical shock, personal injury, or WARNING death, disconnect power to oven and discharge capacitors before following any disassembly procedure. Touch Panel Assembly Back Panel 1. See “Component Location” Figure 1, for location. 1. Remove outer case. 2. -
Page 30: Magnetron Cutout (Tco)
Disassembly To avoid the risk of electrical shock, personal injury, or WARNING death, disconnect power to oven and discharge capacitors before following any disassembly procedure. WARNING To avoid radiation leakage perform microwave energy leakage test. Magnetron Cutout (TCO) 1. See “Component Location” Figure 3, for location. 2. -
Page 31: Fuse
Disassembly To avoid the risk of electrical shock, personal injury, or WARNING death, disconnect power to oven and discharge capacitors before following any disassembly procedure. Fuse Auto Transformer 1. See “Component Location” Figure 3, for location. 1. See “Component Location” Figure 2, for location. 2. -
Page 32: Light Socket
Disassembly To avoid the risk of electrical shock, personal injury, or WARNING death, disconnect power to oven and discharge capacitors before following any disassembly procedure. Light Socket Replacing Oven Light Bulb 1. Unplug power cord remove outer case. 2. Unscrew light bulb from socket. WARNING 3. -
Page 33: Component Location
Disassembly To avoid the risk of electrical shock, personal injury, or WARNING death, disconnect power to oven and discharge capacitors before following any disassembly procedure. Component Location Figure 1 RS2230003 Rev. 1... -
Page 34: Figure 2
Disassembly To avoid the risk of electrical shock, personal injury, or WARNING death, disconnect power to oven and discharge capacitors before following any disassembly procedure. Figure 2 RS2230003 Rev.1... -
Page 35: Figure 3
Disassembly To avoid the risk of electrical shock, personal injury, or WARNING death, disconnect power to oven and discharge capacitors before following any disassembly procedure. Figure 3 RS2230003 Rev. 1...
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