Panasonic NN-963WF Service Manual page 8

The output power of the magnetron can be determined by performing IEC standard test
procedures. However,due to the complexity of IEC test procedures, it is recommended to test the
magnetron using the simple method outlined below.
Necessary Equipment:
*1 liter beaker *Glass thermometer / *Wrist watch or stopwatch
NOTE:
Check the line voltage under load.Low voltage will lower the
magnetron output. Take the temperature readings and heating time
as accurately as possible.
1. Fill the beaker with exactly one liter of tap water.Stir the water
using the thermometer and record the beaker's temperature.
(recorded as T1).
2. Place the beaker on the center of glass cook plate. / Set the oven
for High power and heat it for exactly one minute.
3. Stir the water again and read the temperature of the beaker.
(recorded as T2).
4. The normal temperature rise at High power position for each
model is as shown in table.
TABLE (1L-1min.test)
RATED OUTPUT
1300W(IEC705-88)
1400W(IEC705-88)
3. PROCEDURE FOR MEASURING MICROWAVE
ENERGY LEAKAGE
3.1. Equipment
- Electromagnatic radiation monitor
- Glass thermometer 212 °F or 100 °C
- 600cc glass beaker
3.2. Procedure for measuring radiation leakage
Note before measuring.
- Do not exceed meter full scale deflection. Leakage monitor should
TEMPERATURE RISE
Min. 11.1°C
Min. 12.0°C
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