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2. SPECIFICATIONS
Rated Power Consumption
Microwave
Output
. . . . .
Frequency
. . . . . . . . . . .
Power Supply
. . . . . . . .
Rated Current
. . . . . . . .
Safety
Devices
. . . . . . . .
Timer
. . . . . . . . . . . . . .
. . .
. . .
. . .
. . .
. . .
. . .
. . .
Overall
Dimensions
. . . . . . . .
Oven Cavity Size
. . . . . . . . .
Turn Table Diameter
. . . . . . .
Net Weight
. . . . . . . . . . . . .
1,200W
800W
(Adjustable
175W
through
800W)
2,450 MHz
* 50 MHz
230- 240 V50HZ
6.0 Amp.
Thermal
Protector
for Cav-
ity,
OPen
at 122°C
Ther.
mal
Protector
for
magne-
tron,
Open at 135° C Fuse
(Cartridge
Type
8A)
Pri-
mary
Interlock
Switch
Door
Sensing
Switch
and
Relay
2 interlock
Monitor
Switch
Electronic
Digital,
up
to
99 rein, 99 sec.
550(W)
X
453(D)
x309(H)
mm
575(W)
X
404(0)
X
237(H)
mm
360mm
Approx.
20.Okg
3. POWER
OUTPUT
MEASUREMENT
(1)
Prepare
1000~5g
tap water.
(2)
Adjust water temperature
to 10°*20C.
(3)
Pour
water
into
a container
made
of borosilicate
glass,
190mm
outer
diameter
cylinder,
maximum
3mm thickness.
Note:
Use the container
kept on the room temper-
ature.
(4)
Place the container
in the center of oven cavity.
(5)
Set the heating
time for 52 seconds and rating full
power and then Start oven.
(6)
Take
the container
out
immediately
when
heating
time is up.
(7)
Stir water
for making even water temperature
in the
container.
(8)
Measure water temperature.
Water temperature
rise shall be 8° to 12"C.
4. PRECAUTIONS
AND
REPAIR
SERVICE
TIPS
PRELIMINARY
A. SINCE
NEARLY
4,000
VOLTS
EXISTS
IN
SOME
CIRCUITS
OF THIS
MICROWAVE
OVEN,
REPAIRS
SHOULD
BE
CARRIED
OUT
WITH
GREAT
CARE.
B. TO AVOID
POSSIBLE
EXPOSURE
TO MICROWAVE
ENERGY
LEAKAGE,
THE
FOLLOWING
PRE-
CAUTIONS
MUST
BE TAKEN
BEFORE
SERVICING.
(1)
(a)
(b)
(2)
(a)
(b)
Before
the power is applied:
Open and close door serveral times to make sure the
primary
interlock
switch,
the
interlock
monitor
switch
and the door sensing switch operate
proper-
ly. (Listen
for the clicking
sound from the switches. )
Make
sure the interlock
monitor
switch closes after
the primary
interlock
switch is opens when the door
is opened.
(See pages 1 and 6)
Make
sure the perforated
screen and the choke
di-
electric
of the door are correctly
mounted.
After
the power is applied:
Open
and close the door
to see if the
interlock
mechanism
operates properly.
Check
microwave
energy
leakage
with
a leakage
(3)
(a)
(b)
(c)
(d)
(e)
(f)
(4)
(a)
detector
and confirm
the energy
leakage is below 5
mW/cm2
).
Do not operate the unit until it is completely
repair-
ed, if any of the following
conditions
exists.
Door does not close firmly
against the cavity front.
The hinge is broken.
The door ferrite
rubber or the door seal is damaged.
The
door
is bent or warped,
or there is any other
visible
damage
to the oven that
may cause micro-
wave energy leakage.
Make
sure that
there
are no defective
parts in the
interlock
mechanism.
Make
sure there are no defective
parts in the micro-
wave
generating
and transmission
assembly.
(espe-
cially waveguide).
--
Following
items should
be checked
after
the unit is
repaired.
The interlock
monitor
switch is connected
correctly
and firmly.
(b) The magnetron
gasket on the magnetron
is properly
positioned.
(c) Waveguide
and oven cavity
are intact
(no leakage of
microwave
energy).
(d) The
door
can be properly
closed
and
the
safety
switches work properly.
(e) The oven must be stopped when the door is opened
or the time is up.
The
oven must
not be operated
with
any of the above
components
removed
or bypassed.
–2–
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