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2. SPECIFICATIONS - EM-G471
Rated Power Consumption........ Microwave 1625W
Microwave Output...................... 900W
Frequency.................................. 2,450MHz ± 50MHz
Power Supply............................. 230V,50Hz
Rated Current.............................6.4±10% Amps Micro
Safety Devices........................... Thermal Protector for
Timer.......................................... Electronic Digital
Oven Temperature Control.........Convection,
Overall Dimensions......... 570(W)x482(D)x355(H)mm
Oven Cavity Size.............348(W)x344(D)x251(H)mm
Turntable Diameter.....................325mm
Net Weight..................................Approx. 24Kg.
3. POWER OUTPUT MEASUREMENT
(1) Prepare 1000±5g tap water.
(2) Adjust water temperature to 10 o C±2 o C.
(3) Pour water into a container made of
borosilicate glass, 190mm outer diameter
cylinder, maximum 3mm thickness.
(4) Place the container in the centre of the oven
cavity.
(5) Set the heating time for 47 seconds at full
power and start the 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 should be between 8˚C to 12˚C
for correct power output.
4.PRECAUTIONS AND REPAIR SERVICE TIPS
PRELIMINARY
Convection 1200W
A.SINCE NEARLY 4,000 VOLTS EXIST IN
Grill 1300W
Dual 2860W
SOME CIRCUITS OF THIS MICROWAVE
OVEN, REPAIRS SHOULD BE CARRIED
OUT WITH GREAT CARE
B.TO AVOID POSSIBLE EXPOSURE TO
(After 15mins.)
MICROWAVE ENERGY LEAKAGE, THE
5.3±10% Amps Conv.
FOLLOWING PRECAUTIONS MUST BE
(After 15mins.)
TAKEN BEFORE SERVICING.
5.5±10% Amps Grill
(After 15mins.)
(1)Before the power is applied.
(a)Open and close door several times to make sure
11.4±10% Amps Dual
the primary interlock switch, the door sensing switch,
(After 15mins.)
and the interlock monitor switch operate properly.
(Listen for the clicking sound from switches). Make
Magnetron, Open
sure the interlock monitor switch is closed after the
at 135˚C.
primary interlock switch is opened, when the door is
Thermal Protector for
opened. (See pages 1 and 9).
Cavity, Open at 150˚C.
(b)Make sure the perforated screen and the dielectric
Thermal Protector for
choke of the door are correctly mounted.
Heater, Open at 122˚C.
Thermal Protector for
(2)After the power is applied.
Convection, Open at
(a)Open and close the door to see if the interlock
122˚C
mechanism operates properly.
Fuse (Cartridge Type
8A)
(b)Check microwave energy leakage with a leakage
Primary Interlock Switch
detector and confirm the energy leakage is below
Door Sensing Switch
5mW/cm
Interlock Monitor Switch
(3)Do not operate the unit until it is completely
Micro, 90min x 3 Stages
repaired, if any of the following conditions exists.
Convection, 90 mins
(a)Door does not close firmly against the cavity front.
Grill, 90 mins
(b)The hinge is broken.
(c)The choke dielectric or the door seal is damaged.
40˚C-250˚C
(d)The door is bent or warped, or there is any other
visible damage to the oven that may cause
Dual,
microwave energy leakage.
150˚C-250˚C
NOTE: Always keep the seal clean
(e)Make sure there are no defective parts in the
microwave generating and transmission assembly.
(especially waveguide).
(f)Make sure there are no defective parts in the inter
lock mechanism.
(4)Following items should be checked after the unit is
repaired.
(a)The interlock monitor switch is connected
correctly and firmly.
(b)The magnetron gasket on the magnetron is
properly positioned.
(c)Wave guide 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-
2
.
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