SERVICE MANUAL SUPPLEMENT for Model EM
Contents
1.2. GARLAND SERVICE MANUAL SUPPLEMENT for Model EM S85M Microwave Oven CAUTION WARNING TO SERVICE TECHNICIANS PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY a Do not operate or allow the oven to be operated with the door open b Make the following safety checks on all ovens 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 Before turning on microwave power 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 Any defective or misadjusted components in the interlock monitor door seal and microwave generation and transmission systems shall be repaired replaced or adjusted by procedures described in this manual before the oven is released to the owner e i A microwave leakage check to verify compliance with the Federal performance standard should be performed on each oven prior to release to the owner For U S A e ii A microwave leakage check to verify compliance with the Canadian Regulation HEALTH AND WELFARE SOR 79 920 should be performed on each oven prior to releas
3. COM and NO of switch Secondary Interlock Connect an ohm meter leads to terminals Interlock Monitor COM and NC of switch CAUTION After checking the switches make sure that the interlock monitor switch is properly connected according to the CIRCUIT DIAGRAM on page 3 B TROUBLE SHOOTING CONDITION TROUBLE CHECK RESULT REMEDY Power is applied with normal voltage Timer is set and close the door Cavity lamp does not light but oven operates Cavity lamp Broken lamp Cavity lamp does not light and oven also does not operate Primary interlock switch No continuity See page 6 Fuse 15A Blown fuse Timer switch No continuity Replace timer Thermal protector for cavity No continuity Replace Thermal protector for magnetron Replace No continuity Oven does not Secondary Repi operate but cavity interlock switch No continuity Sa ae 1 lamp lights See page 6 See page 1 Power control switch No continuity Replace timer H V Transformer Resistance See page 4 incorrect Replace H V Capacitor or edi H V Diode esistance See page 5 incorrect Replace Resistance incorrect Magnetron Replace See page 4 See page 9 l O gt l CONDITION TROUBLE CHECK RESULT REMEDY Replace Timer F 15A Fuse t5A biows _ mer motor See page 9 a few minutes Blower motor No operation and stops Oven operates and No
4. 5mW cm at no load and 5mW cm at 275cc water load without the cabinet when measured with a detector For CANADA REMOVING FUSE Remove the 15A fuse with a screwdriver NOTES When replacing the 15A fuse be sure to use an exact repair part If the 15A fuse blows immediately check the primary interlock switch the relay 2 on the control circuit board and the interlock monitor switch according to CHECKOUT PROCEDURE FOR SWITCHES on page 6 And make sure to check the microwave energy leakage Stay Duct mag intake Figure 10 Top View agaoont F VA Blower Motor Figure 11 according to 1 ADJUSTMENT PROCEDURES on page 1 when the primary interlock switch the relay 2 or the interlock monitor switch is adjusted or replaced If the primary interlock switch the relay 2 and the interlock monitor switch operate properly determine which of the followings is defective control circuit board blower motor high voltage transformer high voltage capacitor high voltage diode or magnetron If the high voltage diode is defective replace not only the high voltage diode but also the fuse diode 9 F REMOVING DOOR 1 Remove 2 hex nuts securing the upper hinge 2 Tilt the top of the door toward you 3 Lift up the door to remove it NOTES After replacing the door be sure to check that the primary interlock switch the door sensing switch and the interlock monit
5. Thermal Protector Screw the blower base D REMOVING MAGNETRON Figure 10 Top View After removing the blower motor 1 Remove duct mag exhaust Remove the screw securing the stay 2 Remove 1 screw securing the thermal protector 3 Disconnect 2 lead wires from the magnetron 4 Remove 3 screws securing the magnetron to the waveguide 5 Take out magnetron VERY CAREFULLY 1 E NOTES When removing the magnetron from the cavity or wave guide use a proper care so that the dome of the magnetron does not hit any adjacent parts of microwave oven Make sure that the contact face of the magnetron gasket is free from any damage or deformation Adjust the position of the magnetron properly so that it correctly sits in place and the magnetron gasket is in contact with the mounting rim evenly While holding the magnetron under this condition tighten mounting screws or nuts with your fingers temporarily Further tighten the screws or nuts with a box wrench giving one or two turns to each of the screws or nuts alternatively so that the magnetron is mounted on to the bracket uniformly After replacing the magnetron be sure to check the microwave energy leakage with a leakage detector and confirm the leakage is below 5mW cm2 For U S A After replacing the magnetron be sure to check the microwave energy leakage with a leakage detector and confirm the leakage is below 1mW cm at 275cc water load
6. 2 Power Output Measurement 22 20 05 2 Precautions and Repair Service Tips 2 1 ADJUSTMENT PROCEDURES TO AVOID POSSIBLE EXPOSURE TO MICROWAVE ENERGY LEAKAGE THE FOLLOWING ADJUSTMENT OF THE INTERLOCK SWITCHES SHOULD BE MADE ONLY BY AUTHORIZED SERVICE PERSONNEL The service center should have the designated detector to measure the microwave energy leakage after the repair or adjustment NOTE Detector to be used at the service center is NARDA 8100 8200 or the equivalent PRIMARY INTERLOCK SWITCH INTERLOCK MONITOR SWITCH AND DOOR SENSING SWITCH ADJUSTMENT Figure 1 1 Loosen 2 screws securing the lever stopper 2 Adjust the lever stopper position so that it is pushed forward and pull backward until there is about zero gap between the latch lever and the switch body on the primary interlock switch and at the same time there is about zero gap between the door latch and the switch body on the door sensing switch when the door latch is securely locked 3 Tighten the lever stopper screws securely 4 Make sure the interlock monitor switch closes after the primary interlock switch opens when the door is opened very slowly according to CHECKOUT PROCEDURE FOR SWITCHES on page 6 5 Make sure the interlock monitor switch opens before the primary interlock switch closes when the door is closed very slowly according to CHECKOUT PROCEDURE FOR SWITCHES on page 6 6
7. 6 Figures 1 on page 1 9 a 1 Disconnect all wire leads from the door sensing switch Figure 1 on page 1 2 Remove 2 screws securing the lever stopper 3 Push the door sensing switch upward while pressing adjacent upper switch stopper of lever stopper and lower switch stopper down Figure 9 a 4 Then remove it by lightly pressing the switch toward you Figure 9 a Switch Stoppers 5 Make necessary adjustments or replacements of the Interlock door sensing switch by reversing step 3 and check foe witc microwave energy leakage according to 1 ADJUSTMENT PROCEDURES on page 1 after it is replaced with new one and check proper operation of it according to CHECKOUT PROCEDURE FOR SWITCHES on page 6 Primary Interlock Switch Upper Switch Stopper gg DOOR VAN SENSING SWITCH Switch Stoppers Figure 9 b Interlock Switch Replacement when replacing faulty switches be sure switch mounting tabs are not bent broken or otherwise deficient in their ability to secure the Lower switches in place Switch Stopper Figure 9 a C REMOVING BLOWER MOTOR Figure 10 Top View and 11 1 Remove screw securing the stay 2 Disconnect all lead wires from the blower motor and H V capacitor 3 Remove 2 screws securing the blower base and disengage 3 hooks from the rear plate of cavity Figure 11 4 Remove 1 screw securing the blower motor with Duct mag exhaust Blower Base
8. All service on M W ovens should be performed by a qualified technician using approved testing equipment Customers should not attempt replace component marked with a N symbol 6 TEST PROCEDURES AND TROUBLESHOOTING A TEST PROCEDURES DISCONNECT THE POWER SUPPLY CORD FROM THE WALL OUTLET WHENEVER REMOVING THE CABINET FROM THE UNIT PROCEED WITH THE TESTS ONLY AFTER DISCHARGING THE HIGH VOLTAGE CAPACITOR AND REMOVING THE LEAD WIRES FROM THE PRIMARY WINDING OF THE HIGH VOLTAGE TRANSFORMER SEE FIGURE 3 Filament Windings AUTIO Secondary Windings O j Cf Primary Windings Figure 3 COMPONENT CHECKOUT PROCEDURE RESULT MAGNETRON HIGH VOLTAGE TRANSFORMER Normal reading Less than 1 ohm 1 Check for resistance Across the filament terminals of the magnetron with an ohm meter on R x 1 scale J Ohm meter Figure 4 Normal reading Infinite ohms 2 Check for resistance Between each fila ment terminal of the magnetron and the chassis ground with an ohmmeter on high est scale Ohm meter o 1 Measure the resistance With an ohm meter on R x 1 scale a Primary winding b Filament winding c Secondary winding 2 Measure the resistance With an ohm meter on highest scale a Primary winding to ground b Filament winding to ground Figure Normal readings Approximately 0 45 ohms Less
9. continuity does nol stop of coil epsom Output power is M lo agnetron at Replace ENT E See page 4 Poor oscillation See page 9 H V Capacitor Poor function Replace See page 5 Output power is p high level when ach contro Contact on Replace timer low is selected swite Oven operates for Replace Uneven heating OVEN MUST BE 7 DISASSEMBLY INSTRUCTIONS DISCONNECTED FROM ELECTRICAL OUTLET WHEN MAKING REPLACEMENTS REPAIRS ADJUSTMENTS AND CONTINUITY CHECKS BEFORE PROCEEDING WITH ANY REPAIR WORK AFTER DISCONNECTING WAIT AT LEAST 1 MINUTE UNTIL THE CAPACITOR IN THE HIGH VOLTAGE AREA HAS FULLY DISCHARGED WHEN REPLACING ANY DOOR MICROSWITCH B REMOVING PRIMARY INTERLOCK SWITCH AND INTERLOCK MONITOR SWITCH Figure 9 b 1 Disconnect all wire leads from primary interlock and interlock monitor switch 2 Pull the primary interlock switch or interlock monitor switch upward at the same time while pushing the switch stoppers to allow a space between the switch body and catches 3 Make necessary adjustments or replacement of REPLACE WITH THE SAME TYPE SWITCH SPECIFIED ON THE PARTS LIST switch by the reversing step 2 and check microwave energy leakage according to 1 ADJUSTMENT PROCEDURES on page 1 after it is replaced with new one and check proper operation of it according to CHECKOUT PROCEDURE FOR SWITCHES on A REMOVING DOOR SENSING SWITCH page
10. 411 010 5808 617 138 5601 617 221 6096 411 011 0802 617 180 6137 411 089 2500 Cabinet SCR TPG TRS 4x10 Z1 SCR TPG TRS SRT 4x 10 Z1 Power Cord SCR S T PAN 4x 10 Z1 Oven Cavity Not Service Part Gear Motor SCR EVR PAN 4x 10 Z1 Bottom Plate Not Service Part Plastic Foot with Canoe Clip Bolt Hex SW W5x 14 Hinge Lower Washer F5 x 10 x 0 8 NA lt Na lt SH CO Part No Description Q ty 617 120 8481 617 220 5052 617 199 1048 617 215 2714 617 181 4248 617 162 1938 411 069 1707 411 006 6604 617 200 0381 617 080 5315 617 224 1081 617 224 1098 617 225 2377 Washer Receptacle Rest Turn Table Antenna Complete Protective Cover SCR TPG TRS 4 x 6 DA SCR TPG PAN 3x6 Z1 Thermal Fuse 167 C Special Washer Protective Cover Protective Cover Cover Se h l A A A MA MA MA SWITCHES AND MICROWAVE PARTS NOTE All component have special characteristics for safety and must be replaced using parts listed in this manual All service on M W ovens should be performed by a qualified technician using approved testing equipment Customers should not attempt replace component marked with a A symbol Part No Description Q ty Key mpr i Key No Part No Description Q ty No 1 411 082 5201 SCR TPG TRS 4 x 10 Z1 9 18 2 617 203 8599 H V Transformer N6T P300 1 19 3 617 199 8283 Stay Cavity amp Magne
11. e to the owner For CANADA FORM EM S85M 02 05 CAUTION For microwave energy emission On every service calls check for microwave energy emission must be made according to the following manner Measurement of energy emission Measurement must be made with the microwave oven operating at its maximum output and containing a load of 275415 milliliters of tap water initially at 20 5 celsius 68 9 F placed within the cavity at the center NOTE The water container must be a 600 milliliter beaker and made of an electrically none conductive material such as glass or plastic The cook tray must be in place when measuring emission A properly operating door and seal assembly will normally register emission no greater than 4 mW cm to allow for measurement uncertainty with the cooking shelf or tray in place All repairs must be performed in such a manner that microwave energy emission are minimal Follow the instructions supplied with a detector being used and performed an R F emission test around the door front and edges and all edges and vent of the outer case The cabinet wrapper must be in place and the oven fully assembled When performing emission survey with the meter on FAST RESPONSE the movement of a detector probe shall not exceed one 1 inch per second In the area emitting the highest reading switch the meter to SLOW RESPONSE and take a reading for minimum of three 3 seconds We recommended
12. ge must be below the limit of 1mW cm at 275cc water load 5mW cm at no load and 5mW cm at 275cc water load without the cabinet when measured with a detector For CANADA H REMOVING CAVITY COVER Figure 13 1 Remove a screw from the cavity compartment Cavity Cover Figure 13 I REMOVING TURNTABLE MOTOR COVER Figure 14 1 Turn over the oven on its back 2 Cut the 6 joints of the bottom plate using diagonal pliers nipper 3 Separate the motor cover from bottom plate 4 Remove 2 screws securing turntable motor to the cavity and take it out Note Bent the cut joints inside slightly for safety and be careful of sharp edge Motor Cover 6 Joints Pee eeileseeas see e tee eeelreeceoe ceabes i ols COU a aam cee ceee eee gt CERERE SS Seca 2 C zes eee C gt a 3 cS aer s 5 Pot r 33 E q UE 2S WO coe CS oss el Figure 14 Bottom Plate 8 EXPLODED VIEW AND PARTS LIST CAVITY PARTS NOTE All component have special characteristics for safety and must be replaced using parts listed in this manual All service on MW ovens should be performed by a qualified technician using approved testing equipment Customers should not attempt replace component marked with a A symbol Z O Part No Description Q ty A OMONDOAARWD 2 617 186 2072 411 082 5201 411 160 6007 617 182 7675 411 160 6106 617 224 3467 617 150 2657
13. i Make sure the microwave energy leakage is below the limit of the regulation 5mW cm when measured with a dectector All service adjustments must be made for minimum microwave energy leakage readings For U S A 6 ii Make sure the microwave energy leakage is below the limit of 1imW cm at 275cc water load 5mW cm at no load and 5mW cm at 275cc water load without cabinet when measured with a detector All service adjustments must be made for minimum microwave energy leakage readings For Canada Circuit DiIAaGlaM ice ceo ee eke ee Slate eens 3 Test Procedures and Troubleshooting 4 7 Disassembly Instructions 2000 8 10 Exploded View and Parts List re 11 14 NOTE If the interlock monitor circuit operates and at the same time the fuse blows with the door opened be sure to replace the control circuit board because relay 2 on the control circuit board the door sensing switch and the electric circuit related on the door sensing switch which act as Secondary Interlock Switch Door Latch Lever Stopper Door sensing a _ Interlock Monitor Switch Screws Latch Lever Figure 1 Primary Interlock Switch 2 SPECIFICATIONS 4 PRECAUTIONS AND REPAIR SERVICE TIPS PRELIMINARY oa eae o A SINCE NEARLY 2 000 VOLTS EXISTS IN SOME Frequency L L gt 450MHZ 50MHz CIRCUITS OF THIS MICROWAVE OVEN REPAIRS SHOULD Power Suppl
14. l Part No Description Q ty All service Customers Key Det l No Part No Description Q ty 1 617 208 7504 Door Cover 1 2 411 178 9908 SCR S T PG FLT 4 x 8 ZK 2 3 617 222 1175 Door Panel 1 4 617 208 7481 Door Main Frame Also order 1 Door Sheet when replacing Door Main Frame 5 411 054 1903 Nut Hex Flg W SRT 5 2 617 180 6151 411 011 0802 617 124 0948 617 124 0931 617 101 1494 617 179 2478 Hinge Upper Bolt Hex SW W5x 14 Choke Dielectric Door Sheet Spring Door Latch i i i N aA CONTROL PANEL PARTS NOTE All component have special characteristics for safety and must be replaced using parts listed in this manual All service on MMW ovens should be performed by a qualified technician using approved testing equipment Customers should not attempt replace component marked with a A symbol Part No Description No Part No Description Q ty 617 143 9632 Knob Assy 6 4111606205 SCR TPG TRS SRT 4 x 10 Z1 1 617 143 9656 Knob Assy 7 617 209 0566 Timer Switch 1 617 209 0573 Control Plate 8 411006 2804 SCR TPG BIN 4x10 Z1 4 617 208 7634 Control Frame 9 617 080 9559 Spring Door Release Lever 2 617 209 0610 Control Base Assy 10 617 124 1143 Door Release Lever 1 Part No Description Q ty 617 209 0542 Operating Instructions 1 617 209 0498 Carton Box Complete 1 617 209 0436 Name Plate 1
15. or switch operate normally See page 1 After replacing the door check for microwave energy leakage with a leakage detector Microwave energy leakage must be below the limit of 5mW cm2 For U S A After replacing the door check for microwave energy leakage with a leakage detecter Microwave energy leakage must be below 1 mW cm2 at 275cc water load 5mW cm2 at no load and 5mW cm2 at 275cc water load without the cabinet when measured with a detector For CANADA G DISASSEMBLYING DOOR Figure 12 1 insert a thin flat blade screwdriver between the choke dielectric and the door main frame and lift up the choke dielectric to release hooks one by one Figure 12 2 Remove the choke dielectric 3 To detach the door cover Insert a thin flat blade screwdriver between door cover and the door panel and release the projections inside door cover 4 To detach the door panel Insert a thin flat blade screwdriver between the door cover and door main frame Hooks Door Main Frame Choke _ Dielectric NOTES The choke dielectric may be damage when it is removed When reinstalling it replace it with new ones if it is damaged After installing the door in place check for microwave energy leakage with a detector Microwave energy leakage must be below the limit of 5mW cm2 For U S A After installing the door in place check for microwave energy leakage with a detector Microwave energy leaka
16. r can be calculated by the equation Power Output W 70 x Dt Where Dt is an average temperature rise in degrees Centigrade Power Output shall be in the following range Average Temperature Rise Power Output Minimum 9 9 C 693W Maximum 12 7 C 889W Power Output is affected by the line voltage under load For correct Power Output measurement the line voltage under load must be 120 2volts E LEAKAGE THE FOLLOWING PRECAUTIONS MUST BE TAKEN BEFORE SERVICING h O Before the power is applied Open and close door several times to make sure the prima ry interlock switch the interlock monitor switch and the door sensing switch operate properly 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 dielectric 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 detector and confirm the energy leakage is below 5 mW cm Do not operate the unit until it is completely repaired if any of the following conditions exists Door does not close firmly against the cavity front The hinge is broken The choke dielectric or the door seal is damaged The door is bent or warped or there is any other
17. than 1 ohm Approximately 83 1 ohms Normal readings Infinite ohms Infinite onms Note Remove varnish of Figure 6 measured point COMPONENT CHECKOUT PROCEDURE RESULT Normal reading Momentarily indicates several ohms and gradually returns to 10 meg ohms Abnormal reading Indicates continuity or 10 meg ohms from the beginning Measure the resistance Across two terminals with an ohm meter on highest scale Figure 7 HIGH VOLTAGE CAPACITOR including BLEEDER RESISTOR Normal reading Indicates about the middle position in one direction forward direction and infinite ohms in the reverse direction using meter which is provided with a 9 volt battery Measure the resistance Across two terminals with an ohm meter on R x 10 000 scale NOTE Ohm meter Some digital meter may show over even in a forward direction because low measuring voltage of meter does not allow the meter current to pass through the high voltage S225 a 2 diode HIGH VOLTAGE DIODE Abnormal reading Indicates continuity or infinite ohms in both directions Figure 8 CHECKOUT PROCEDURE FOR SWITCHES Disconnect the lead wires from the switches and check for the continuity of the switches connecting an ohm meter to its terminals SWITCH CHECKOUT PROCEDURES DOOR OPEN DOOR CLOSE Primary Interlock Connect an ohm meter leads to terminals
18. the pattern outline shown below when the door surface is surveyed NOTE Periodically check to be sure that the probe tip is not worn or dirty The following U S standard applies to microwave ovens 21 CFR 1030 10 Performance Standard for Microwave Ovens It requires that the power density of the microwave radiation emitted by a microwave oven shall not exceed five 5 milliwatts per square centimeter at any point 5 centimeter about 2 inches or more from the external surface of the oven All microwave ovens exceeding the emission level of 4 mW cm2 must be reported to Dept of Service for microwave ovens and the manufacturer immediately and the owner should be told not to use the microwave oven until it has been repaired completely if a microwave oven is found to operate with the door open report to Dept of Service the manufacturer and CDRH immediately Also tell the owner not to use the oven CDRH Center for Device and Radiological Health The interlock monitor switch acts as the final safety switch protecting the customer from microwave radiation If the interlock monitor switch operates properly and the door interlocks switch fails the fuse will blow If this happens all interlock switches must be replaced The contacts of the interlock switches may be welded together TABLE OF CONTENTS Adjustment Procedures 02 0002022 ee eaee 1 SPECHICALONS 2 244 ws duane a Fide dane EA E N 28
19. tron 1 20 4 411 006 6604 SCR TPG PAN3x6 Z1 1 2 5 617 124 1235 Thermostat Magnetron 122 C 1 6 415 002 6002 Magnetron 2M218H N A 1 22 7 423014 2509 Fuse 250V 15A 1 8 617 177 6157 Power PCB 1 23 9 617 180 4447 Lead Wire Ass y including Diode 1 10 617 162 1990 Space Partition Blower 1 24 11 617 197 6670 H V Capacitor including Resistor 1 29 0 97 uf 2 2KV 26 12 617 182 2373 Capacitor Band 1 2 13 411 011 5609 Bolt Hex 4 x 10 Z1 4 28 14 617 181 2534 Duct Mag Exhaust 1 29 15 617 206 9180 Lamp 125V 15W 1 30 16 617 124 1280 Lamp Socket 1 31 17 617 197 7417 Blower Motor 1 32 411 082 5201 617 196 8507 617 124 1181 617 152 4741 617 004 5575 617 152 4741 617 124 1198 617 124 1174 411 102 5907 617 124 3796 411 160 6106 411 007 5903 617 208 7689 SCR TPG TRS 4x 10 Z1 Blower Fan Latch Lever Micro Switch Primary Interlock V 5930D Micro Switch Interlock Monitor V 5220DZ Micro Switch Door Sensing V 5930D Latch Lever Lever Stopper SCR ETG TRS 4 x 10 N2 Lead Wire Assy SCR S T TRS SRT 4 x 10 Z1 SCR TPG BIN 4 x 10 Z1 Clip a N N e a DOOR PARTS NOTE All component have special characteristics for safety and must be replaced using parts listed in this manual on M W ovens should be performed by a qualified technician using approved testing equipment should not attempt replace component marked with a A symbo
20. visible dam age to the oven that may cause microwave energy leakage NOTE Always keep the seal clean Make sure there are no defective parts in the microwave generating and transmission assembly especially wave guide The following items should be checked after the unit is repaired The interlock monitor switch is connected correctly and firm ly The magnetron gasket on the magnetron is properly posi tioned Waveguide and oven cavity are intact no leakage of microwave energy The door can be properly closed and the safety switches work properly 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 5 CIRCUIT DIAGRAM levy UVTI C1 R L1 L2 800 uH C1 O 1UF S3 eee re CAVITY TEMP FUSE an fl OPEN 167 C ON LO O O a S LOCK PRIMARY Q COM MOTOR INTERLOCK A N SWITCH NG COM ZANG Timer OZ MA Bi o POWER ei CONTROL TIMER MOTOR WITCH Se SOS 2 52246222 8 7 2 4 T GEAR MOTOR HIGH VOLTAGE TRANSFORMER BLOWER MOTOR z CAPACITOR CONDITION OF OVEN 0 97 MFD TIMER OFF WV2 2KVAC DOOR OPEN A N e al PRIMARY INTERLOCK SWITCH RESISTOR LOWER DOOR INTERLOCK SWITCH 10MEG OMH SECONDARY INTERLOCK SWITCH MAGNETRON UPPER DOOR INTERLOCK SWITCH NOTE All component have special characteristics for safety and must be replaced using parts listed in this manual
21. y 120V 60Hz BE CARRIED OUT WITH GREAT CARE E A N 11 1 Amp _ TO AVOID POSSIBLE EXPOSURE TO MICROWAVE ENEGY Safety Devices Thermal Fuse open at 167 C for Cavity Thermal Protector open at 122 C for Magnetron Fuse Cartridge Type 15A Primary Interlock Switch Secondary Interlock Switch Interlock Monitor Switch TIEF oh Sa At ek nee areas ae 60 min Overall Dimensions 525 W x 427 D x 283 H mm Oven Cavity Size 350 W x 371 D x 208 H mm Turn Table Diameter 340mm Effective Capacity of Oven Cavity arinkectei es aaa 25 liters Net Weight Approx 16kg 3 POWER OUTPUT MEASUREMENT NOTE The power output specification 850 W on this model is measured with IEC measurement The power output is measured with two 2 liters water is equivalent to 850 W in measurement with IEC when measured with the following power output A 1 Fill two beakers with one liter of tap water respectively 2 Use accurate thermometer and measure each water temperature respectively B Place beakers side by side in the centre of the glass tray C 1 Set the timer at any position more than 2 minutes 2 Heat the water correctly for 2 minutes D Take the beakers out immediately stir the water and mea sure the water temperature respectively 1 Calculate the temperature rise of water in each beaker 2 Then calculate the average value of two temperature rises 3 Output powe
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