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13.3. Adjustment of the primary
interlock switch (SAFETY
SWITCH A) (Right and Left
side)
1. Switch operation
When the door is slightly opened, the contacts of primary
interlock switch opened to give digital programmer circuit
the information that the door is opend. The allowable
movement of the door from the closed position to the
operating position (shown as liter) of the switch when it
opens the circuit, is specified as follows;
PRIMARY INTERLOCK SWITCH (liter) = 1 mm — 3 mm
(When primary interlock switch opens the circuit)
NOTE:
Make sure that primary interlock switch turn off
prior to the secondary interlock switch when the
door is gradually opened.
2. How to adjust primary interlock switch
Loosen 2 screws which secure the primary interlock switch
bracket to the bracket of the oven assembly and then adjust
the primary interlock switch bracket by moving it to either
direction as shown in figure.
13.4. Measurement of microwave
output
The output power of the magnetron can be determined by
performing IEC standard test procedures. However, it is
possible to test the magnetron by following procedure outlined
below.
Necessary equipement:
·
1 litre beaker
·
Glass thermometer
·
Wrist watch or stopwatch
NOTE:
Check the line voltage under load to ensure it meets
specifications. Low voltage condition will cause a
reduction in magnetron output. Temperature readings
and heating time, should be as accurate as possible.
Output power performance test procedure.
1. Fill the beaker with exactly one litre of tap water. Stir the
water using the thermometer and note the temperature.
(Record as T1)
2. Place the beaker in the center of cook plate. Set the oven
for High power and heat for exactly one minute.
3. After completion of the heating cycle, stir the water again
WARNING
Check for radiation leakage after every servicing.
Should the leakage be more than 2 mW/square centimeter
(1mW/square centimeter for Canada) infrorm PASC, PSC, or PCI
immediately. Aftr repairing or replacing any radiation safety device,
keep a written record for future reference, as required by D.H.H.S. and
Health and Welfare Canada 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.
with the thermometer and note the temperature. (Record as
T2)
The normal temperature rise (T2 — T1) at High power position
for each models is as shown in following table.
Model Temperature Rise (1 liter — 1
Min.)
NE-3280 Min. 27.4°C
NE-2180
NE-2180C
Min 18°C
NOTE:
The U.S.government standard is 5mw/square
centimeter while in the customer’s home. 2mw/square
centimeter stated here is Panasonic’s own voluntary
standard.
14.1. Equipment
·
Electromagnetic radiation monitor
14 PROCEDURE FOR MEASURING RADIATION LEAKAGE
24
NE-3280 / NE-2180 / NE-2180C