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2-9970, NE-9970C
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=-9870, NE-9870C
PROCEDURE FOR MEASURING RADIATION LEAKAGE
WARNING
Check for radiation leakage after every servicing.
Should the leakage be more than 2 mw/cm (1mw/
cm for Canada) inform the Panasonic Co. (MESCO,
PHI, PSC, or MELCA) immediately. After repairing or
replacing any radiation safety device, keep a written
record for future reference, as required by D.H.H.S
and NHW
regulation. This required must be strictly
observed. In addition, the leakage reading must be
recorded on the service repair ticket while in the cus-
tomers home.
See
SSS
oss
NOTE: The U.S. government standard is 5 mw/cti while in the customer's
home. 2mw/cm stated here is Panasonic's own voluntary stan-
dard. (1 mw/cti for Canada)
MOVE PROBE ALONG SHADED
(1) Do not exceed meter full scale deflection. Leakage monitor
WARNING
should initially be set to the highest scale.
(2) To prevent false readings the test probe should be held by the
AVOID CONTACTING ANY HIGH VOLTAGE PARTS.
grip portion of the handle only and moved along the shaded area
shown in Fig. 41 no faster than 1 inch/sec (2.5 cm/sec)
(3) Leakage with the outer panel removed::----less than 5mw/cnt
(4) Leakage for a fully assembled oven with door normally closed:::
--less than 2mw/cat (1mw/enl for Canada)
(5) Leakage for a fully assembled oven [Before the latch switch
(primary) is interrupted] while lightly pressing the door release lev-
er:+less than 2mw/eat
(A) Pour 275 + 15cc (9ozs + 1/20z) 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.
(B) Set the radiation monitor to 2450MHz and use it following the manu-
facturer's recommended test procedure to assure correct results.
(C) When measuring the leakage, always use the 2 inch (5 cm) spacer
supplied with the probe.
=
i
(D) Tap the start pad and with the magnetron oscillating, measure the
—
j
CAPACITOR
leakage by holding the probe perpendicular to the surface being me-
asured.
(1) Measurement with the outer panel removed.
Whenever you replace the magnetron, measure for radiation leakage
before the outer panel is installed and after ali necessary components
are replaced or adjusted. Special care should be taken in measuring
WARNING
Avoid contacting any high voltage parts.
(2) Measurements with a fully assembled oven.
After al! 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.
3. Record keeping and notification after measurement
(A) 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 this repair ticket and the microwave leakage reading should
be kept by repair facility.
(B) Should the radiation leakage be more than 2 mw/cal ({mw/cni for
Canada) after determining that ail parts are in good condition, func-
tioning properly, and genuine replacement parts as listed in this
manual have been used, immediately notify the PANASONIC
CO.
(MESCO, PHI, PSC or MELCA).
4. At least once a year, have the radiation monitor check-
ed for calibration by its manufacturer.
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