DAEWOO ELECTRONICS KOR-63050S User manual

Service Manual
Microwave Oven
Model: KOR-63050S
KOR-86050S
KOR-86050N
DAEWOO ELECTRONICS CO., LTD.
S/M No. : R63050S002

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SAFETY AND PRECAUTIONS ........................................................................................................ 2
SPECIFICATIONS ............................................................................................................................ 3
EXTERNAL VIEW ............................................................................................................................ 4
1. OUTER DIMENSION ................................................................................................................... 4
2. FEATURE DIAGRAM ................................................................................................................... 5
INSTALLATION ................................................................................................................................ 6
OPERATIONS AND FUNCTIONS ................................................................................................... 7
DISASSEMBLY AND ASSEMBLY .................................................................................................. 8
INTERLOCK MECHANISM AND ADJUSTMENT ...........................................................................15
TROUBLE SHOOTING GUIDE ........................................................................................................ 16
MEASUREMENT AND TEST ...........................................................................................................18
1. MEASUREMENT OF THE MICROWAVE POWER OUTPUT ..................................................... 18
2. MICROWAVE RADIATION TEST ................................................................................................ 19
3. COMPONENT TEST PROCEDURE ............................................................................................ 20
WIRING DIAGRAM .......................................................................................................................... 21
EXPLODED VIEW AND PARTS LIST ............................................................................................. 22
(a) Do not operate or allow the oven to be operated with the door open.
(b)Make the following safety checks on allovens to be serviced before activating the magnetron or other microwave
source, and make repairs as necessary: (1) Interlock operation, (2) Proper door closing, (3) Seal and sealing
surfaces (arcing, wear, and other damage),(4) Damage to or loosening of hinges and latches, (5) Evidence of
dropping or abuse.
(c) Before turning on power to the microwave oven for any service test or inspection within the microwave
generating compartments, check the magnetron, wave guide or transmission line, and cavity for proper
alignment, integrity, and connections.
(d) Any defective or misadjusted components in the interlock, monitor, door seal, and microwave generation and
transmission systems shall be repaired, replaced, oradjusted by procedures described in this manualbefore the
oven is released to the owner.
(e)A microwave leakage check to verify compliance with the Federal performance standardshould be performed on
each oven prior to release to the owner.
PRECAUTIONSTOBEOBSERVEDBEFOREANDDURINGSERVICING
TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE
ENERGY


SAFETY AND PRECAUTIONS
1. FOR SAFE OPERATION
Damage that allows the microwave energy (that cooks or heats the food) to escape will result in poor cooking and may cause
serious bodily injury to the operator.
IF ANY OF THE FOLLOWING CONDITIONS EXIST, OPERATOR MUST NOT USE THE APPLIANCE.
(Only a trained service personnel should make repairs.)
1) A broken door hinge.
2) A broken door viewing screen.
3) A broken front panel, oven cavity.
4) A loosened door lock.
5) A broken door lock.
The door gasket plate and ovencavity surface should be kept clean.
No grease, soil or spatter should be allowed to build up on these surfacesor inside the oven.
DO NOT ATTEMPT TO OPERATE THIS APPLIANCE WITH THE DOOROPEN. The microwave oven has concealed switches
to make sure the power is turned off when the door is opened. Do not attempt to defeat them.
DO NOTATTEMPT TO SERVICE THIS APPLIANCE UNTIL YOU HAVE READ THIS SERVICE MANUAL.
2. FOR SAFE SERVICE PROCEDURES
1. If the oven is operative prior to servicing, a microwave emission check should be performed prior to servicing the oven.
2. If any certified oven unit is found to servicing, a microwave emissioncheck should be performed prior to servicing the oven.
(a) inform the manufacturer, importer or assembler,
(b) repair the unit at no cost to the owner,
(c) attempt to ascertain the cause of the excessive leakage,
(d) tell the owner of the unit not to use the unit until the oven has been brought into compliance.
3. If the oven operates with the door open, the service person should tell the user not to operate the oven and contact the
manufacturer immediately.
IMPORTANT
The wire in this mains lead coloured in accordance with the following code.
Green-and-yellow : Earth
Blue : Neutral
Brown : Live
As the colours ofthe wires in the manins lead of this appliance may notcorrespond with the coloured markings
identifying the terminals in your plug, proceed as follows.
The wire which is coloured green-and-yellow must be connected to the termianl in the plug which is marked with the
letter ‘E’ or by earth symbolor green-and-yellow.
The wire which is coloured blue must be connected to the terminal which is marked with the letter ‘N’or coloured black.
The wire which is coloured brown must be connected to the terminal which is marked with the letter ‘L’ or coloured red.
This oven is designed for counter-top use only.
NOTE


SPECIFICATIONS
KOR-6305
KOR-8605
 Specifications are subject to change without notice.
MODEL KOR-63050S
POWER SUPPLY 230V,50Hz, SINGLE PHASE WITH EARTHING
POWER CONSUMPTION MICROWAVE 1200W
GRILL
COMBINATION
MICROWAVE ENERGY OUTPUT 800W
MICROWAVE FREQUENCY 2450MHz
OUTSIDE DIMENSIONS (W X H X D) 465 x 279 x 360 mm (18.3 x 11.0 x 14.2 in.)
CAVITY DIMENSIONS (W X H X D) 290 x 220 x 306 mm (11.4 x 8.7 x 12.0 in.)
NET WEIGHT APPROX. 13 Kg ( 28.7 lbs.)
TIMER 35 min. DUAL SPEED
FUNCTION SELECTIONS MICROWAVE
POWER SELECTIONS 5 LEVELS
CAVITY VOLUME 0.7 Cu.Ft.
MODEL
KOR-86050S KOR-86050N
POWER SUPPLY
230V,50Hz(86050S)/220V,50Hz(86050N),
SINGLE PHASE WITH EARTHING
POWER CONSUMPTION MICROWAVE
1350W 1250W
GRILL
COMBINATION
MICROWAVE ENERGY OUTPUT
900W
MICROWAVE FREQUENCY
2450MHz
OUTSIDE DIMENSIONS (W X H X D)
495 x 294 x 388 mm (19.5 x 11.6 x 15.3 in.)
CAVITY DIMENSIONS (W X H X D)
320 x 244 x 338 mm (12.6 x 9.6 x 13.3 in.)
NET WEIGHT
APPROX.15 Kg ( 33.1 lbs.)
TIMER
35 min.DUAL SPEED
FUNCTION SELECTIONS
MICROWAVE
POWER SELECTIONS
5 LEVELS
CAVITY VOLUME
0.9 Cu.Ft.

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EXTERNAL VIEW
1. OUTER DIMENSION
KOR-6305
KOR-8605
Fig.1 Front view Fig.2 Side view
Fig.1 Front view Fig.2 Side view
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EXTERNAL VIEW
2. FEATURE DIAGRAM
1. Safety interlock system
2. Door viewing screen -Allowsviewing offood. Thescreen isdesigned sothat lightcan passthrough,but not the microwave.
3. Door hook -
When the door is closed, it willautomatically shut.Ifthe door is opened while the oven is operating,
the magnetron willimmediately stop operating.
4. Oven cavity
5. Door seal - Door seal maintains the microwave energy within the oven cavity and prevents microwave leakage.
6. Glass cooking tray -Made of special heat resistant glass. Food in a proper receptacle isplaced on this tray for cooking.
7. Roller guide - This must always be used for cooking together withthe glass cooking tray.
8. Coupler - This fits over the shaft in the center of the ovens cavity floor. This is to remain in the oven for all cooking.
9. Knob V.P.C - Used to select a microwave power level.
10. Knob timer - Used in setting cooking time for all functions.
11. Door release button -
By pushing this button the latch system cutoff allcircuits and stops the oven before the door is opened

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INSTALLATION
1. Steady, flat location
This microwave oven should be set on a steady, flat surface.
This microwave oven is designed forcounter top use only.
2. Leave space behind and side
All air vents should be kept a clearance. If all vents are covered during operation, the oven may overheat and, eventually,
cause failure.
3. Away from radio and TV sets
Poor television reception and radio interference may result if the oven is located close to a TV, radio,antenna or feeder and so on.
Position the oven as far from them aspossible.
4. Away from heating appliances and water taps
Keep the oven away from hot air, steam or splash when choosing a place to position it, or the insulation might be adversely
affected and breakdowns occur.
5. Power supply
•Check your local power source.
This microwave oven requires a current of approximately 6amperes, 230 Volts, 50 Hz/ 220Volts, 50Hz (KOR-8650N).
•Power supply cord is about 0.8 meterslong.
•The voltage used must be the same as specified on this oven. Using a higher voltage may result in a fire or other accident
causing oven damage. Using low voltage will cause slow cooking. We are not responsible fordamage resulting from use
of this oven with a voltageof ampere fuse otherthan those specified.
•This appliance is supplied with cable ofspecial type, which, if damaged, must be repaired with cableof same type.
Such a cable can be purchased from DAEWOO and must be installed by a Qualified Person.
6. Examine the oven after unpacking for any damage such as:
A misaligned door, broken door or a dent in cavity.
If any of the above are visible, DO NOT INSTALL, and notify dealer immediately.
7. Do not operate the oven if it iscolder than room temperature
(This may occur during delivery in cold weather.) Allow the oven to become room temperature before operating.
This appliance must be earthed. In theevent of an electrical short circuit, earthing reduces the risk of the electric shockby
providing an escape wire for the electric current. This appliance is equipped with a cord having a earthing wire with a
earthing plug.The plug mustbe pluggedinto an outlet thatis properly installed and earthed.
WARNING
Improper use of the earthing plug can result in a risk of electric shock. Consult a qualified electrician or serviceman if
the earthing instructions are not completely understood, or if doubt exists as to whether the appliance is properly
earthed, and either : If it is necessary to use an extension cord, use only a 3-wire extension cord that has a 3-blade
earthing plug, and a 3-slot receptacle that will accept the plug on the appliance. The marked rating of the extension
cord should be equal to or greater than the electrical rating of the appliance, or Do not usean extension cord.
EARTHING INSTRUCTIONS

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OPERATIONS AND FUNCTIONS
1. Connect the main lead to an electrical outlet.
2. After placing the food in a suitable container, open the oven
door and put it on the glasstray. The glass tray must always
be in place during cooking.
3. Close the door securely.
4. Choose cooking power levelby setting V.P.C knob to the
desired position. Refer to cookbook for recommended
power levels.
5. Determine cooking time.
Consult cookbook for recipe timing.
Oven light turns on and cooling fan starts to operate.
Microwave cooking starts.
6. You may open the doorwhile the oven is operating.
As soon as the door is opened, the safety mechanims
stop the generation of microwave power and the operation
of cooking timer.
If you wish to change the time during cooking, simply adjust
the timer to the desired time.
7. When the timer reaches zero, a bell will ring and the unit will turn off.
Oven light turns off. If additional cooking time is needed and the
door is closed, the oven will automatically start when the timer is reset.
Variable power cooking
On and OFF cycle time of mechanical V.P.C switch is 30 seconds.
When the V.P.C knob is set to the desired position andtimer knob turns to the desired position, the V.P.C switch has a cycle
(ON/OFF time(sec.)) listedbelow.
 6305/8605
Variable power setting ON/OFF time (sec.) Approximate Percentage of Power
MAX (HIGH) 30/0 100 %
610W / 700W (MED HIGH) 23.2/6.8 77 %
440W / 500W (MEDIUM) 16.5/13.5 55 %
260W / 290W (DEFROST) 9.8/20.2 33 %
130W / 150W (WARM) 5/25 17 %
Make sure theoven is properlyinstalled and plugged intothe electrical outlet.
NOTE
1. When setting timerfor lessthan2 minutes, turn the
timer past 2 minutes and then return to the correct
timer setting.
2. Various clicking noises may be heard when turning
V.P.C knob. This is normal and does not affect the
operation of your microwave oven.

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DISASSEMBLY ANDASSEMBLY
Cautions to be observed when trouble shooting
Unlike many other appliances, the microwave oven is high-voltage, high-current equipment.
It is completely safety during normal operation. However, carelessness in servicing the oven
can resultin an electric shock or possible danger from a short circuit.
You are asked to observethe following precautions carefully.
1. Always remove the power plug from the outlet before servicing.
2. Use an insulated screwdriver and ware rubber gloves when servicing the high voltage side.
3. Discharge the high voltage capacitor before touching any oven components or wiring.
(1) Check the earthed.
Do not operate on a two-wire extension cord.
The microwave oven is designed to be used with earthed.
It is imperative, therefore, to makes sure it is earthed properly
before beginning repair work.
(2) Warning about the electric charge in the high voltage capacitor.
For about 30 seconds after the operation stopped and electric
charge remains in the high voltage capacitor. When replacing
or checking parts, short between oven chassis and the negative
high terminal of the high voltage capacitor, by using a properly
insulated screwdriver to discharge.
4. When the 12A fuse is blown out due to the operation of the monitor
switch; replace primary interlock switch, secondary interlock switch
and interlock monitor switch.
5. After repair or replacementof parts, make sure that the screws are
properly tightened, and all electrical connections are tightened.
6. Do not operate without cabinet.
CAUTION
WARNING
Service personnel should remove their watches whenever working close to or replacing the magnetron.
When servicing the appliance,need a care oftouching or replacing high potential parts because ofelectrical shock
or exposing microwave.These parts are as follows -HV Transformer, Magnetron,HV Capacitor,HV Diode,HV Fuse.

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DISASSEMBLY ANDASSEMBLY
1. To remove cabinet
(1) Remove three screws on cabinet back.
(2) Push the cabinet backward.
2. To remove door assembly
(1) Remove a screw which securethe stopper hinge top.
(2) Remove the door assembly fromtop plate of cavity.
(3) Reverse the above for assembly.
3. To remove door parts
KOR-6305
REF.NO PART CODE PART NAME DESCRIPTION Q’TY REMARK
A01 3512203810 FRAME DOOR ABS XR-401 H-2938 1
A02 3517003050 BARRIER-SCREEN*O ACRYL 1
A03 3515304610 SUPPORTER BARR-S*O PP 1
A04 3515204100 STOPPER HINGE *T AS KOR-63150S 1
A05 3511705500 DOOR WELD AS KOR-61150S 1
A06 3517002800 BARRIER-SCREEN *I POLYESTER T0.1 1
A07 3512300200 GASKET DOOR PP 1
A08 3513100700 HOOK POM 1
A09 3515101300 SPRING HOOK PW1 1
NOTE
After replacing the door assembly, perform a check of
correct alignmentwith the hinge and cavity front plate.


DISASSEMBLY ANDASSEMBLY
KOR-8605
(1) Remove the gasket door from door weld as.
(2) Remove the barrier screen inner from door weld as.
(3) Remove the door frame from door weld as.
(4) Remove the stopper hinge top fromdoor weld as.
(5) Remove the spring and the hook.
(6) Remove the supporter barrier screen outer from door frame.
(7) Remove the barrier screen outerfrom door frame.
(8) Reverse the above steps for reassembly.
4. Method to reduce the gap between the door seal and the oven front surface
(1) To reduce gap located on part ‘A’.
•Loosen a screw on stopper hinge top, and then push
the door to contact the door sealto oven front surface.
•Tighten a screw.
(2) To reduce gap located on part ‘B’.
•Loosen two screws onstopper hinge under,and then
push the door to contact the doorseal to oven front surface.
•Tighten two screws.
REF.NO PART CODE PART NAME DESCRIPTION Q’TY REMARK
A01 3512204110 FRAME DOOR ABS XR-401 H-2938 1
A02 3517003150 BARRIER-SCREEN*O ACRYL T1.5 1
A03 3515304410 SUPPORTER BARR-S*O PP 1
A04 3515204100 STOPPER HINGE *T AS KOR-63150S 1
A05 3511705620 DOOR WELD AS KOR-81250S 1
A06 3517002900 BARRIER-SCREEN *I POLYESTER T0.1 1
A07 3512300400 GASKET DOOR PP 1
A08 3513100700 HOOK POM 1
A09 3515101300 SPRING HOOK PW1 1
NOTE
A small gap may be acceptable if themicrowave leakage does not exceed 4mW/cm2.


DISASSEMBLY ANDASSEMBLY
5. To remove control panel parts
KOR-6305
KOR-8605
REF.NO PART CODE PART NAME DESCRIPTION Q’TY REMARK
B01 3513405510 KNOB VPC ABS XR-401 H-2938 1
B02 3516719010 CONTROL-PANEL ABS XR-401 H-2938 1
B03 3517400500 COUPLER VPC KNOB POM 1
B04 7122401211 SCREW TAPPING T2S TRS 4x12 MFZN 1
B05 3517400400 COUPLER TIMER POM 1
B06 3518203800 TIMER KN35MKD 24E-P 1
B07 7122401211 SCREW TAPPING T2S TRS 4x12 MFZN 2
B08 3513405410 KNOB ABS XR-401 H-2938 1
B09 3513702710 LEVER DOOR OPEN ABS XR-401 H-2938 1
B10 441G430171 SPRING BUTTON SWP DIA 0.7 1
B11 3516906910 BUTTON DOOR OPEN ABS XR-401 H-2938 1
REF.NO PART CODE PART NAME DESCRIPTION Q’TY REMARK
B01 3513405510 KNOB VPC ABS XR-401 H-2938 1
B02 3516719310 CONTROL-PANEL ABS XR-401 H-2938 1
B03 3517400500 COUPLER VPC KNOB POM 1
B04 7122401211 SCREW TAPPING T2S TRS 4x12 MFZN 1
B05 3517400400 COUPLER TIMER POM 1
B06 3518203800 TIMER KN35MKD 24E-P 1
B07 7122401211 SCREW TAPPING T2S TRS 4x12 MFZN 2
B08 3513405410 KNOB ABS XR-401 H-2938 1
B09 3513702710 LEVER DOOR OPEN ABS XR-401 H-2938 1
B10 441G430171 SPRING BUTTON SWP DIA 0.7 1
B11 3516906910 BUTTON DOOR OPEN ABS XR-401 H-2938 1


DISASSEMBLY ANDASSEMBLY
(1) Remove the screw which secure the control panel, push up two snap fits and draw forward the control panel assembly.
(2) Remove the door open lever fromthe control panel.
(3) Remove two screws which secure the timer assembly.
(4) Remove the timer assembly.
(5) Pull out the timer knob from the timer.
(6) Pull out the timer coupler from the timer.
(7) Remove the screw which secure the V.P.C coupler.
(8) Pull out the V.P.Ccoupler, V.P.C knob and flat spring from the control panel.
(9) Remove the door open button and button spring from the control panel.
(10) Reverse the above steps for reassembly.
6. To remove high voltage capacitor
(1) Remove a screw which secure the grounding
ring terminal of the H.V.diode and the capacitor holder.
(2) Remove the H.V. diode from the capacitor holder.
(3) Reverse the above steps for reassembly.
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High voltage circuitwiring


DISASSEMBLY ANDASSEMBLY
7. To remove magnetron
(1) Remove a screw which securethe magnetron.
(2) Remove the magnetron.
(3) Reverse the above steps for reassembly.
NOTE
Never install the magnetron without the metallic gasket plate which is packedwith each magnetron to prevent
microwave leakage. Whenever repair work is carried out on magnetron, check the microwave leakage. It shall not
exceed 4mW/cm2for a fully assembled oven with door normally closed.


DISASSEMBLY ANDASSEMBLY
8. To remove wind guide assembly
(1) Remove a screw for earthing.
(2) Remove the noise filter from thewind guide.
(3) Remove a screw which securethe wind guide assembly.
(4) Draw forward the wind guide assembly.
(5) Pull the fan from the motor shaft.
(6) Remove two screws which secure the motor shaded pole.
(7) Remove the motor shaded pole.
(8) Reverse the above steps for reassembly.
9. To remove H.V.transformer
(1) Remove four screws holding theH.V transformer.
(2) Remove the H.V.transformer.
(3) Reverse the above steps for reassembly.


INTERLOCK MECHANISM AND ADJUSTMENT
The door lock mechanism is adevice which has been specially designed to completely eliminate microwave radiation when the
door is opened during operation, and thus to perfectly prevent the danger resulting from the leakage of microwave.
1. Primary interlock switch
When the door is closed, the hook locks
the oven door. If the door is not closed properly,
the oven will not operate. When the dooris closed,
the hook pushes the button of the microswitch.
Then the button of the primary interlockswitch bring
it under “ON” condition.
2.Secondary interlock switch and interlock monitor switch
When the door is closed, the hook pushes the lock
lever downward.The lock lever presses the button of the
interlock monitor switch to bring it under “OFF” condition
and presses the button of the secondaryinterlock switch
to bring it under “ON” condition.
3. Adjustment steps
(a) Loosen one mounting screw.
(b) Adjust interlock switch assembly position.
(c) Make sure that lock lever moves smoothly after adjustment is completed.
(d) Tighten completely one mounting screw.
ADJUSTMENT
Interlock monitor switch
When the door is closed, the interlock monitor switch should be opened before other switches are closed.
When the door is opened,the interlock monitor switch should be closed after other switches are opened.
NOTE
Microwave emission test should be performed after adjusting interlock mechanism.
If the microwave emission exceed 4mW/cm2, readjust interlock mechanism.


TROUBLE SHOOTING GUIDE
Following the proceduresbelow to checkif the oven is defectiveor not
1. Check grounding before checking trouble.
2. Be careful of the high voltagecircuit.
3. Discharge the high voltage capacitor.
4. When checking the continuityof the switches, fuse or high voltage transformer, disconnect one lead wire from these parts
and then check continuity with the ACplug removed. To do otherwise may result in a false reading or damage to your meter.
(TROUBLE 1) Door shut, timer set, but no cooking takes place.
Does the fan motor work when you
shutthe door and turn the timer?
Does the
fuse blow? Check continuity of interlock
monitor switch with door shut. Replace primary,secondary
interlock switch and interlock
monitor switch.
Replace fuse and check
continuity of both interlock
switch's contactand monitor
switch's contact with door
partially open until monitor
switch contact.
Replace primary, secondary
interlock switch and interlock
monitor switch.
Disconnect one side of the
lead wire connected from
transformer to the high voltage
capacitor, and operate oven.
Replace high
voltage
capacitor.
Replace high
voltage transformer
If outlet has proper voltage,
check continuity ofpower
supply cord.
Replace power
supply cord.
YES (Refer to nextpage)
NO
NO
NO
YES Continuity
NO Continuity
NO Continuity
Both continuity
Normal
Fuse again


TROUBLE SHOOTING GUIDE


MEASUREMENT AND TEST
1. MEASUREMENT OF THE MICROWAVE POWER OUTPUT
Microwave output power can be checked by indirectly measuring the temperature rise of a certain amount of water exposed to
the microwave as directed below.
PROCEDURE
1. Microwave power output measurement is made with the microwave oven supplied at rated voltage and operated at its
maximum microwave power setting with a load of 1000± 5cc of potable water.
2. The water is contained in a cylindricalborosilicate glass vessel having a maximum material thickness of 3 mm and an outside
diameter of approximately 190 mm.
3. The oven and the empty vessel areat ambient temperature prior tothe start ofthe test. Theinitial temperatureof the water is
10 ± 2 °C (50 ± 3.6 °F). It is measured immediately before the wateris added to thevessel. After additionof the water to the
vessel, the load is immediately placed on the center of the shelf, which is in thelowest normal position.
4. Microwave power is switched on.
5.Heating time shouldbe exactly
A
seconds (Refer to table as following).
Heating time is measured while the microwave generator is operating
at fullpower. The filament heat-up time for magnetron is not included.
6. The initial and final temperature of water is selected so that the maxi-
mum difference between the ambient and final watertemperature is 5K.
7.The microwave power outputP in watts is calculated from the following
formula:
• 
Tis difference between initial and ending temperature.
•t is the heating time.
The power measured should beB(Refer to 2. SPECIFICATIONS) W ± 10.0 %.
 Heating time for power output:
A (second)
70 64 60 56 52 49 47 44 42 40 38
B (W)
600 650 700 750 800 850 900 950 1000 1050 1100
CAUTION
1.Water load should be measuredexactly to 1 liters.
2.Input power voltage should be exactly specified voltage (Refer to 2. SPECIFICATIONS).
3.Ambient temperature should be 20 ± 2°C (68 ± 3.6°F)
P = 4187
 T/t


MEASUREMENT AND TEST
2. MICROWAVE RADIATION TEST
PROCEDURE
1. Prepare Microwave Energy SurveyMeter, 600cc glass beaker, and
glass thermometer 100°C (212°F ).
2. Pour 275cc ±15cc of tap water initially at20 ± 5 °C (68 ± 9°F) in the
600 cc glass beakerwith an inside diameterof approx.95 mm(3.5 in.).
3. Place it at the center of the tray and set it in a cavity.
4. Close the door and operate the oven.
5.Measure the leakage by using Microwave Energy Survey Meter with
dual ranges, set to 2450MHz.
(1)
Measured radiation leakage must not exceed the value prescribed
below. Leakage for a fully assembled oven with door normally
closed must be less than 4mW/cm
2
.
(2) When measuring the leakage, always use the 5 cm (2 in.)
space cone with probe. Hold the probe perpendicular to the
cabinet and door. Place the space cone of the probe on the
door, cabinet, door seem, door viewing screen, the exhaust air
vent sand the suction air vents.
(3) Measuring should be in a counter-clockwise direction at a rate
of 1 in./sec. If the leakage of the cabinet doorseem is unknown,
move the probe more slowly.
(4) When measuring near a corner of the door, keep the probe perpendicular to the areas making sure the probe end at the
base of the cone does not get closer than 2in. from any metal. If it does not, erroneous reading may result.
WARNING
•
Make sure to check the microwave leakage before and after repair of adjustment.
•
Always startmeasuring of an unknown field to assure safety for operating personnelfrom microwave energy.
•
Do not place your hands into any suspected microwave radiation field unless the safe density levelis known.
•
Care should be taken not to place the eyes in direct line with the source of microwave energy.
•
Slowly approach the unit under test until the radiometer reads an appreciable microwave leakage from
the unit under the test.