Service manual

Microwave Power Test 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.
©2003 Maytag Appliances Company 16022150 Rev. 0 19
Power Test (Traditional Test Method)
Test equipment required is Amana power test kit R0157397 (Fahrenheit), or
Menumaster power test kit M95D5 (Celsius).
1. Fill the plastic container to the 1000 ml. line with cool tap water.
2. Using the thermometer; stir the water, measure, and record the water temperature.
Initial water temperature should be approximately 60°F(16°C).
3. Place container on the center of the oven shelf and heat the water for
33 seconds for ovens with more than 1550 watts or 63 seconds for ovens with less than 1550 watts.
NOTE: Use a watch second hand, not the oven timer.
4. Stir the water, measure and record the temperature of the water after heating time is complete.
5. Subtract the starting water temperature (Step 2), from the ending water temperature (Step 4) to obtain the
temperature rise (∆T).
6. See the Traditional Power Test Temperature Chart below.
NOTES: •The IEC-705 test method requires precision measurements and equipment. It is not practical to perform
the IEC test in the field. To convert the traditional power test results to the approximate IEC-705 rating,
take the traditional power test results and add 100 watts per magnetron for the unit being tested.
Example: 840  watts output using the traditional power test for model LD510P
+ 100
 watts (1 magnetrons X 100 watts)
940  Approximate IEC-705 results
•Always perform power test three times for accuracy, changing the water after each test is performed.
•Variation or errors in the test procedure will cause a variance in the temperature rise. Additional power
tests should be made if temperature rise appears marginal.
•Low line voltage will cause lower temperature rise.
Temperature Chart
SIXTY−THREE SECONDS run time chart for units less than 1550 Watts cooking power
∆T Cooking ∆T Cooking ∆T Cooking ∆T Cooking
(°F) Power Output (°F) Power Output (°C) Power Output (°C) Power Output
12 464 27 1046 7 490 15 1050
13 504 28 1085 8 560 16 1120
14 542 29 1124 9 630 17 1190
15 581 30 1162 10 700 18 1260
16 620 31 1201 11 770 19 1330
17 659 32 1240 12 840 20 1400
18 697 33 1279 13 910 21 1470
19 736 34 1317 14 980
20 775 35 1359
21 814 36 1395
22 852 37 1434
23 891 38 1472
24 930 39 1511
25 969 40 1550
26 1007