2. SPECIFICATIONS - EM-D99504.PRECAUTIONS AND REPAIR SERVICE TIPS
Rated Power Consumption........ Micro. 1450+15%W PRELIMINARY
Conv. 1200+5/-10%W
Grill 1100+5/-10%WA.SINCE NEARLY 4,000 VOLTS EXIST IN
Dual 2550+15%WSOME CIRCUITS OF THIS MICROWAVE
(After 15mins.)OVEN, REPAIRS SHOULD BE CARRIED
Microwave Output...................... 900W OUT WITH GREAT CARE
Frequency.................................. 2,450MHz ? 50MHz
Power Supply............................. 230V,50HzB.TO AVOID POSSIBLE EXPOSURE TO
Rated Current.............................6.45?10% Amps MicroMICROWAVE ENERGY LEAKAGE, THE
5.3?10% Amps Conv.FOLLOWING PRECAUTIONS MUST BE
4.95?10% Amps Grill TAKEN BEFORE SERVICING.
11.5?10% Amps Dual
(After 15mins.)(1)Before the power is applied.
Safety Devices........................... Thermal Protector for (a)Open and close door several times to make sure
Magnetron, Open the primary interlock switch, the door sensing switch,
at 135uC.and the interlock monitor switch operate properly.
Thermal Protector for (Listen for the clicking sound from switches). Make
Cavity, Open at 150uC. sure the interlock monitor switch is closed after the
Thermal Protector for primary interlock switch is opened, when the door is
Heater, Open at 150uC. opened. (See pages 1 and 9).
Thermal Protector for(b)Make sure the perforated screen and the dielectric
Convection, Open atchoke of the door are correctly mounted.
122uC
Fuse (Cartridge Type (2)After the power is applied.
8A)(a)Open and close the door to see if the interlock
Primary Interlock Switchmechanism operates properly.
Door Sensing Switch(b)Check microwave energy leakage with a leakage
Interlock Monitor Switchdetector and confirm the energy leakage is below
Timer..........................................5mW/cmElectronic Digital 2.
Micro,90min x 3 Stages
Convection, 90 mins(3)Do not operate the unit until it is completely
Grill, 90 minsrepaired, if any of the following conditions exists.
Oven Temperature Control.........Convection,(a)Door does not close firmly against the cavity front.
40uC-250uC(b)The hinge is broken.
Dual,(c)The choke dielectric or the door seal is damaged.
150uC-250uC(d)The door is bent or warped, or there is any other
Overall Dimensions......... 550(W)x487(D)x376(H)mmvisible damage to the oven that may cause
Oven Cavity Size.............348(W)x345(D)x251(H)mmmicrowave energy leakage.
Turntable Diameter.....................325mmNOTE: Always keep the seal clean
Net Weight..................................(e)Make sure there are no defective parts in the Approx. 26Kg.
microwave generating and transmission assembly.
3. POWER OUTPUT MEASUREMENT(especially waveguide).
(f)Make sure there are no defective parts in the inter
(1) Prepare 1000cc tap water in a wide mouthed Pyrex lock mechanism.
container.
(4)Following items should be checked after the unit is
(2) Stir thoroughly and note initial water temperature T1repaired.
(uC).(a)The interlock monitor switch is connected
correctly and firmly.
(3) Place container in centre of oven and operate for 60 (b)The magnetron gasket on the magnetron is
seconds at full power.properly positioned.
(c)Wave guide and oven cavity are intact ( no leakage
(4) Remove container, stir thoroughly and note final of microwave energy).
water temperature T2 (uC).(d)The door can be properly closed and the safety
switches work properly.
(5) Calculate power output= 70 x Temp. rise (T2-T1).(e)The oven must be stopped when the door is
opened or the time is up.
NOTE: This is only an approximate test method, not
IEC705 test method to which the microwave ovenThe oven must not be operated with any of the above
has been tested and rated.components removed or bypassed.
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ACEC
