8.1. Adjustment of Primary
interlock switch, Secondary
interlock switch and Short
switch.
1. Mount the Primary interlock switch, the Secondary interlock
switch and the Interlock monitor switch to the door hook
assembly as shown in illustration.
NOTE:
No
specific
individual
adjustments
during
installation
of
the
Primary
interlock
switch,
Secondary interlock switch or Interlock monitor
switch to the door hook are required.
2. When mounting the door hook assembly to the oven
assembly, adjust the door hook assembly by moving it in
the direction of the arrows in the illustration so that the oven
door will not have any play in it. Check for play in the door
by pulling the door assembly. Make sure that the interlock
keys move smoothly after adjustment is completed.
Completely tighten the screws holding the door hook
assembly to the oven assembly.
3. Reconnect the interlock monitor switch and check the
continuity of the monitor circuit and all interlock switches
again by following the component test procedures.
8.2. Measurement of microwave
output
The output power of the magnetron can be determined by
performing IEC standard test procedures. However,due to the
complexity of IEC test procedures, it is recommended to test
the magnetron using the simple method outlined below.
Necessary Equipment:
•
1 liter beaker
•
Glass thermometer
•
Wrist watch or stopwatch
NOTE:
Check the line voltage under load. Low voltage will
lower the magnetron output. Take the temperature
readings and heating time as accurately as possible.
1. Fill the beaker with exactly one liter of tap water.Stir the
water using the thermometer and record the water’s
temperature. (recorded as T1).
2. Place the beaker on the center of glass tray.
Set the oven for High power and heat it for exactly one
minute.
3. Stir the water again and read the temperature of the water.
(recorded as T2).
4. The normal temperature rise at High power level for each
model is as shown in table.
TABLE (1L-1min. test)
RATED OUTPUT
TEMPERATURE RISE
1000W
Min. 8.5°C
8 MEASUREMENTS AND ADJUSTMENTS
18
NN-GF574S / NN-GF574M
Summary of Contents for NN-GF574S
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Page 5: ...1 FEATURE CHART 2 CONTROL PANEL 5 NN GF574S NN GF574M ...
Page 6: ...3 SCHEMATIC DIAGRAM 6 NN GF574S NN GF574M ...
Page 25: ...10 EXPLODED VIEW AND PARTS LIST 10 1 EXPLODED VIEW 25 NN GF574S NN GF574M ...
Page 31: ...11 DIGITAL PROGRAMMER CIRCUIT 11 1 SCHEMATIC DIAGRAM 31 NN GF574S NN GF574M ...
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