Procedure For Measuring Microwave Energy Leakage - Amana A1200S Service

Procedure for Measuring Microwave Energy Leakage

!
WARNING
Check for radiation leakage before and during every
servicing. Should the leakage be more than 4mW/cm
(to allow for measurement uncertainty) inform Amana
Appliances immediately. After repairing or replacing
any radiation safety device, keep a written record for
future reference, as required by the Department of
Health and Human Services and CDRH regulation.
This requirement must be strickly observed. In
addition, the leakage reading must be recorded on the
servie repair ticket while in the customer's location.
Equipment
• Electromagnetic radiation monitor
• Glass thermometer 212°F. or 100°C.
• 600 cc glass beaker
Procedure for Measuring Radiation
Leakage
Note before measuring:
a. Do not exceed meter full scale deflection.
Leakage monitor should initially be set to the
highest scale.
b. To prevent false readings the test probe should be
held by the grip portion of the handle only. The
scan speed is equal to 1" per antenna revolution
of 1" per second if antenna speed is unknown.
Areas to be checked are all seal areas, window,
and any venting parts.
c. Leakage with the outer panel removed . . . 4mW/
2
cm or less.
d. Leakage for a fully assembled oven with door
normally closed . . . 4mW/cm
e. Leakage for fully assembled oven (before the latch
switch (primary) is interrupted) while pulling the
door . . . 4mW/cm
1. Pour 275 ± 15 cc (9 oz. ± 1/2 oz) or 20 ± 5°C. (68°F.
± 9°F.) water in beaker which is graduated to 600 cc
and place the beaker in the center of the oven.
2. Set the radiation monitor to 2450 MHz and use it
following the manufacturer's recommended test pro-
cedures to assure correct results.
3. While measuring the leakage, always use the two
inch (5 cm) spacer supplied with the probe.
4. Press the start pad or turn on the timer and with the
magnetron oscillating, measure the leakage by hold-
ing the probe perpendicular to the surface being
measured.
2 or less.
2
or less.
Measurement with the Outer Panel
Removed
Whenever you replace the magnetron, measure for
2
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.
!
To avoid risk of severe personal injury or death , avoid
contacting any high voltage components.
Measurement with a Fully Assembled Oven
After all components, including the outer panel are fully
assembled, measure for radiation leakage around the
door periphery, the door viewing window, the exhaust
opening, and air inlet openings.
Record Keeping and Notification After
Measurement
• After any adjustment or repair to a microwave oven, a
leakage reading must be taken. Record this leakage
reading on the repair ticket even if it is zero.
A copy of the repair ticket and the microwave leakage
reading should be kept by repair facility.
29
DANGER
RE220002 Rev. 6