Procedure For Measuring Microwave Energy Leakage - GE JES2251SJ Technical Service Manual

10 PROCEDURE FOR MEASURING MICROWAVE ENERGY LEAKAGE

WARNING
Check for radiation leakage after every servicing.
After repairing or replacing any radiation safety
device, keep a written record for future reference,
as required by D.H.H.S. and Health regulation.
This requirement must be strictly observed. In
addition, the leakage reading must be recorded
on the service repair ticket while in the customer's
home.
NOTE:
The U.S. Government standard is 5 mW/cm
while in the customer's home. 2mW/cm
here is our own voluntary standard.
10.1. Equipment
Microwave leak detector
Glass thermometer 212˚F or 100˚C
600cc glass beaker
10.2. Procedure for measuring
radiation leakage
Note before measuring.
Do not exceed meter full scale deflection. Leakage
monitor should initially be set to the highest scale.
To prevent false readings the test probe should be
held by the grip portion of the handle only and
moved along the shaded area in Figure no faster
than 1 inch/sec (2.5cm/sec).
Leakage with the outer panel removed ...... less than
5mW/cm 2 .
Leakage for a fully assembled oven with door nor-
mally closed ...... less than 2mW/cm
Leakage for a fully assembled oven [Before the
latch switch (primary) is interrupted] while pulling
the door ...... less than 2mW/cm
1. Pour 275 ± 15cc (9ozs
(68˚ ± 9˚F) water in a beaker which is graduated
to 600cc, and place in the center of the oven.
2. Set the radiation monitor to 2450MHz and use it
following the manufacturer's recommended test
procedure to assure correct results.
3. When measuring the leakage, always use the 2
inch (5cm) spacer supplied with the probe.
4. Tap the start pad or set the timer and with the
magnetron oscillating, measure the leakage by
holding the probe perpendicular to the surface
being measured.
2 stated
2
.
2 .
s ± 1/2oz) of 20˚C ± 5˚C
10.2.1. Measurement with the outer
panel removed.
Whenever you replace the magnetron, measure for
radiation leakage before the outer panel is installed
and after all necessary components are replaced or
adjusted. Special care should be taken in measuring
around the magnetron.
Avoid contacting any high voltage parts.
2
10.2.2. Measurements with a fully
assembled oven.
After all components, including outer panel are fully
assembled, measure for radiation leakage around the
door periphery, the door viewing window, the exhaust
opening and air inlet openings.
10.3. Record keeping and notification
after measurement
After any adjustment or repair to a microwave oven,
a leakage reading must be taken. Record this leak-
age reading on the repair ticket even if it is zero.
A copy of this repair ticket and the microwave leak-
age reading should be kept by repair facility.
20
WARNING