Commercial Microwave Technical Information. CAUTION All safety information must be followed as provided in Service Manual

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1 Commercial Microwave Technical Information 0 V, 0 Hz Models RCS0MPA P00M RCS0A P00M RCS0PBDA P00M RCS0MPSA P00M RFSMPSA P00M RFSSWA P00M RCS0SWA P0M RCS0MPA P0M Due to possibility of personal injury or property damage, always contact an authorized technician for servicing or repair of this unit. Refer to Service Manual 0 for installation, operating, testing, troubleshooting, and disassembly instruction. CAUTION All safety information must be followed as provided in Service Manual 0.! To avoid the risk of electrical shock, personal injury or death, disconnect power to oven and discharge capacitor Models RCS0MPA, RCS0MPSA, RCS0A, RCS0SWA, RCS0PBDA RFSMPSA, RFSSWA Power Source Voltage AC 0 VAC 0 VAC Amperage (Single Unit) A 0 A Frequency 0 Hz 0 Hz Single Phase, wire grounded X X Receptacle -R -0R Plug -P -0P Power Output Nominal microwave energy (IEC0) 000 Watts 00 Watts Minimum temperature rise ( T) 0ºF / ºC ºF /.ºC Operating Frequency 0 MHz 0 MHz Power Consumption Cook Condition Microwave 00 Watts /. Amps 00 Watts /. Amps Dimensions Cabinet Width /" cm /" cm Height /". cm /". cm Depth 0 /". cm 0 /". cm Oven Interior Width /". cm /". cm Height ". cm ". cm Depth /". cm /". cm Weight Crated lbs. kg lbs. kg Uncrated lbs. kg lbs. kg April Maytag Services Replaces 0

2 Illustration Component Testing Results Thermal cutout Disconnect all wires from TCO. Measure resistance across terminals. Cavity TCO... Magnetron TCO... Closed at F (0 C) and Opens at 0 F (0 C) Closed at 0 F (0 C) and Opens at 0 F (0 C) Diode Capacitor Remove diode lead from capacitor and connect ohmmeter. Reverse leads for second test. Infinite resistance should be measured in one direction and 0KΩ or more in the opposite direction. NOTE: Ohmmeter must contain a battery of volts minimum. Magnetron Remove wires from capacitor terminals and connect ohmmeter, set on highest resistance scale to terminals. Also check between each terminal and capacitor case. Between Terminals: Meter should momentarily deflect towards zero then return to over MΩ. If no deflection occurs, or if continuous deflection occurs, replace capacitor. Terminal to Case: Infinite resistance Between Terminals: Less than Ω Blower motor Remove wires from magnetron and connect ohmmeter to terminals. Also check between each terminal and ground. Remove all wires from motor. Each terminal to ground measures Infinite resistance. Note: This test is not conclusive. If oven does not heat and all other components test good replace the magnetron and retest. Measure resistance across coil... Approximately Ω Stirrer motor Remove all wires from motor. Measure resistance across terminals... Approximately. KΩ Secondary Primary Filament Transformer Noise filter board Remove all wires from terminals. Measure resistance from: Primary... Filament... Secondary to Ground screw on transformer stack... Power In terminals... Power Out terminals... Less than < Ω Less than < Ω Approximately 00 0 Ω 0 VAC 0 VAC If no power in, check power outlet. If no power out, check fuses. 0 April 00 Replaces 0 00 Maytag Services

3 Illustration Component Testing Results Interlock switch assembly Disconnect wires to switch. Monitor Primary With door open measure resistance from: Monitor - Terminal -... Primary - Terminal -... Secondary - Terminal -... With door closed measure resistance from: Monitor - Terminal -... Primary - Terminal -... Secondary - Terminal -... Indicates continuity Infinite Ω Infinite Ω Infinite Ω Indicates continuity Indicates continuity After verifying or replacing the Secondary module, reconnect wires to switch and check operation of monitor circuit before operating the oven. Lamp receptacle Test continuity of receptacle terminals. Indicates continuity with bulb installed. Wire Harness Test continuity of wires Indicates continuity Electronic Control Panel Service Test Mode: Open door, Press and Hold pad for seconds to enter service test mode. Press... Press... Press... Press... Press... Press... Press... Press... Press... Press 0... Stop/Reset... Error codes: E-0... E-0... E-0... SERVICE appears in the display Indicates number of hours magnetron has been turned on Indicates number of times magnetron tube has been turned on and off Indicates number of door cycles CLEAR (Press pad to reset service data.) Indicates amperage RESET (Clear Service Alarm) Exit Service Test Mode Replace Control Board Replace Control Board Shorted or Open Keypad Test and replace if necessary Hidden Hidden Electronic Dial Control Panel Service Test Mode: Open door, Press and Hold Hidden for seconds to enter service test mode. 0% 0% DEFROST Press Hidden... Press Hidden again... Press Hidden again... Press Hidden again... Press Hidden again... Press Hidden again... Enters into Service Test Mode Indicates number of magnetron hours Indicates tube cycles Indicates number of door cycles Indicates amperage Turn dial to Clear Info When dial is rotated display indicates CLEARED INFO April Maytag Services Replaces 0

4 Illustration Component Testing Results Electronic Control Keyboard assembly is indicated as 00 Ω and below. RCS0MPA RCS0SWA RFSSWA Electronic Control RCS0MPSA RFSMPSA Electronic Control RCS0A Dial Control RCS0PBDA 0 Keyboard assembly 0 Keyboard assembly 0 Keyboard assembly 0 is indicated as 00 Ω and below. is indicated as 00 Ω and below. is indicated as 00 Ω and below. 0 HOLD (0%) DEFROST (0%) MEDIUM (0%) MED-HI (0%) 0 QTY X HOLD (0%) DEFROST (0%) MEDIUM (0%) MED-HI (0%) 0 0 QUICK SET HIDDEN # HIDDEN # DEFROST (0%) MEDIUM (0%) MED-HI (0%) & & & & & & & & & & & 0 & 0 & 0 & 0 & 0 & 0 & 0 & & & & & & & & & & & & 0 & 0 & 0 & 0 & 0 & 0 & 0 & & & & & & & & & & & 0 & 0 & 0 & & & & 0 & 0 & 0 & 0 & 0 & 0 0 April 00 Replaces 0 00 Maytag Services

5 RY RLY TAB TAB CN Function Test Set-Up / Meter Probe Placement Results Condition Setting Control transformer All Conditions CN Pin to Pin (White to Black) 0 VAC input Oven light relay RY Standby... Ready... CN Pin to Pin (Yellow to Black).. CN Pin to Pin... 0 VAC 0 VAC Blower / Stirrer motor relay RY Secondary Interlock Switch Cook... Standby... Ready... Cook... Door Closed... Door Opened... CN Pin to Pin... CN Pin to Pin (Brown to White). CN Pin to Pin... CN Pin to Pin... CN Pin to Pin (Pink to Green)... CN Pin to Pin... 0 VAC 0 VAC 0 VAC 0 VAC < Ω Infinite Cook relay RY Disconnect wires from relay Current transformer input Current transformer output Standby... Ready... Cook... Relay Terminal to Terminal... Relay Terminal to Terminal... Relay Terminal to Terminal... Infinite Infinite < Ω All Conditions Tab to Power Cord White (Neutral) 0 VAC All Conditions Tab to Power Cord White (Neutral) 0 VAC April Maytag Services Replaces 0

6 All Amana and Menumaster microwave oven power outputs are rated using the IEC0 standards. Using the IEC0 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: 000 ml test container and thermometer (Amana power test kit R0 Fahrenheit / Menumaster power test kit MD Celsius). Digital watch / watch with a second hand for use on ovens with electromechanical timers. Important Notes: Low line voltage will cause low temperature rise / power output. Ovens must be on a dedicated circuit, properly grounded, and polarized. Other equipment on the same circuit may cause a low temperature rise / power output. This test and results are not a true IEC0 test procedures and are only intended to provide servicers with an easy means of determining if the microwave oven cooking output is correct. Procedure. Fill the test container to the 000 ml line with cool tap water. NOTE: Water temperature should be approximately 0 F / C. Using the thermometer, stir water for five to ten seconds; measure, and record the temperature (T).. Place test container of water in the center of oven cavity and close door.. Heat the water for a -second full power cycle. NOTE: Use a digital watch or a watch with a second hand for ovens with electromechanical timers.. At end of the cycle, remove test container. Using the thermometer, stir water for five to ten seconds and record temperature (T).. Subtract the starting water temperature (T), from the ending water temperature (T) to obtain the temperature rise ( T).. If the temperature rise ( T) meets or exceeds the minimum, the test is complete. If the temperature rise ( T) fails to meet the minimum temperature rise, test the line voltage to verify it is correct. Then repeat steps - making sure to change the water. If the temperature rise ( T) fails to meet the minimum temperature rise again the oven will require service. Minimum Temperature Rise at Thirty -Three () Seconds Run Time T Cooking T Cooking T Cooking T Cooking ( F) Power Output ( F) Power Output ( C) Power Output ( C) Power Output April 00 Replaces 0 00 Maytag Services

7 Wiring and Schematic Diagrams CONTROL OPTIONAL! HIGH VOLTAGE DANGER April Maytag Services Replaces 0