18
5. Alignment and Adjustments
5-9 Procedure for Measurement of Microwave Energy Leakage
1.
Pour 275±15cc of 20±5°C(68±9°F) water in a beaker which is graduated to
600cc, and place the beaker in the center of the oven .
2.
Start to operate the oven and measure the leakage by using a microwave
energy survey meter .
3.
Set survey meter with dual ranges to 2,450MHz .
4.
When measuring the leakage, always use the 2 inch spacer cone with the
probe . Hold the probe perpendicular to the cabinet door . Place the spacer
cone of the probe on the door and/or cabinet door seam and move along
the seam, the door viewing window and the exhaust openings moving the
probe in a clockwise direction at a rate of 1 inch/sec . If the leakage testing of the cabinet door seam is taken near
a corner of the door, keep the probe perpendicular to the areas making sure that the probe end at the base of the
cone does not get closer than 5cm to any metal . If it gets closer than 5cm, erroneous readings may result .
5.
Measured leakage must be less than 4mW/cm2 , after repair or adjustment .
Maximum allowable leakage is 5mW/cm2 .
4mW/cm2 is used to allow for measurement and meter accuracy
5-10 Note on Measurement
1.
Do not exceed the limited scale .
2.
The test probe must be held on the grip of the handle, otherwise a false
reading may result when the operator’s handle and the probe .
3.
When high leakage is suspected, do not move the probe horizontally
along the oven surface; this may cause damage to the probe
4.
Follow the recommendation of manufacturer of the microwave energy
survey meter .
5-11 Record keeping and notification after measurement
1.
After adjustment and repair of a radiation preventing device, make a repair record for the measured values, and
keep the data .
2.
If the radiation leakage is more than 4mW/cm2 after determining that all parts are in good condition, functioning
properly and the identical parts are replaced as listed in this manual notify that fact to ;
CENTRAL SERVICE CENTER
3.
At least once a year have the microwave energy survey meter checked for accuracy by its manufacturer
Probe
Spacer Cone
Summary of Contents for CM1929
Page 1: ...Mod CM1929 Production code CM 1929A 08 2012 ...
Page 4: ...3 1 Precaution ...
Page 22: ...21 6 Troubleshooting 6 1 Electrical Malfunction Continued ...
Page 23: ...22 6 Troubleshooting 6 1 Electrical Malfunction Continued ...
Page 24: ...23 6 Troubleshooting 6 1 Electrical Malfunction Continued ...
