KitchenAid Architect Series KBMS1454R, Technical Education, Page: 56 / 68

6-2
MICROWAVE OVEN POWER OUTPUT TEST
The power output of the magnetron can be
measured by the following tap water tempera-
ture rise test.
NOTES:
• Be sure oven cavity is clean and cool (not
used recently).
• The magnetron output will be lower with
lower line voltages.
1. Fill a glass beaker with 10 oz (300 mL) of
tap water. Stir the water with a thermometer
(digital recommended) and record the tem-
perature. This starting temperature of the
water should be between 50
°
F and 75
°
F
(10
°
C and 24
°
C).
2. Place the beaker and water in the center of
the microwave oven. Operate on HIGH
power level for 30 seconds.
3. When the microwave oven is finished, stir
the thermometer through the water and
record the temperature.
4. Subtract the cold water temperature from
the warm water temperature to get the
temperature rise. Normal range is as shown
in the following table.
Voltage Temperature Rise
(VAC under load) ºF ºC
120V 27 - 34.2 15 - 19
108V 23.4 - 30.6 13 - 17