background image

CRITICAL PARTS SERVICING

1.  IMPORTANT THINGS TO DO PRIOR TO CRITICAL PART SERVICING

The  following instructions are CRITICAL  to the  owner’s safety.  Be  sure to  follow all  the instructions. Contact the

manufacturer of distributor if you have any question.

1.1  If  the  oven  is  operative  prior  to  servicing a  Microwave  Leakage   Test (Microwave  Emission  Check)  should  be

       performed  prior  to   servicing  the  oven.  Refer  to  Section  7.3,Microwave  Leakage  Test,  for   the  detailed  check

       procedures.

1.2       in  the  event that  any microwave  oven  found to  have  microwave emission  level  in  excess of  4 mW/cm2.The

           following procedures should be followed:

           a. Inform the distributor, importer, or manufacture the finding. Record it in the     logbooks well.

           b. Repair the unit at no cost to the owner.

           c. Investigate  the oven  and ascertain  the cause  of the excessive leakage.

           d. Hold the  oven  in  your  facility and instruct the owner not to use the unit until the  oven  has  been  brought  into

            compliance.

1.3 In the event that the oven operates with the door open.The following procedures should be followed:

          a. Tell the user not to operate the oven.

          b. Hold the oven in your facility until it is investigated and repaired.

          c. Contact the manufacturer and CDRH(FDA) immediately.

2.   Interlock Assembly Replacement and Adjustment

        2.1       If you suspect  defective primary,  secondary or monitor interlock switches, use your ohmmeter(digital or analog

                    type the check the electrical continuity.

      2.2     Make sure the power cord is pulled out and the high-voltage capacitor is discharged before the electrical

                    continuity check.

       2.3     Set the ohmmeter to “Low Resistance” range and connect both leads (alligator clips) to the switch terminals.

        2.4      Open the door and notice the meter reading. The primary or secondary interlock switch should show an “infinite”

                  resistance when the door is open. Replace it when it is defective. The monitor interlock should show a “zero or

             near zero” resistance when the door is open. When the door is closed, the readings will be opposite.

       2.5 If the oven has been received inoperative due to the failure of the monitored safety(primary and/or secondary)

            interlock(s),you should replace all of the monitored safety interlock switched and the monitor switch.

     2.6     Refer to Chapter 4, Sections and for how to remove and assemble the interlock and monitor switches.

        2.7      Always refer to Section 0.4 for adequate wiring diagram. Monitor interlock must always be installed. Repeat Step

                   6.2.4 to check electrical continuity.

     2.8    Perform required checks and tests as described in Chapter 7 before releasing the oven to the owner.

6-1

Содержание EM044KIT-P00K

Страница 1: ...MICROWAVE OVEN MODEL EM044KIT P00K 1000W 120V60Hz SERVICE MANUAL CAUTION BEFORE SERVICING THE UNIT READTHE SAFETY PRECAUTIONS IN THIS MANUAL...

Страница 2: ...ODUCTION 1 2 SAFETY PRECAUTIONS 1 1 SCHEMATIC DIAGRAM HEATING PRINCIPLE OF MICROWAVE TROUBLESHOOTING PROCEDURES 5 1 COMMON BREAKDOWN AND MEANS OF REPAIRING 6 1 CRITICAL PARTS SERVING 7 1 SAFETY CHECKS...

Страница 3: ...aboratory or commercial use It is intended for home use only Do not use for drying clothes linens newspaper or similar non food type items 7 Make sure that all persons using this appliance especially...

Страница 4: ...should not be allowed to accumulate on hood or filter 2 When flaming floods under the hood turn the fan on INTRODUCTION This Microwave Oven service Manual is printed in a loose leaf format Each part...

Страница 5: ...icrowave 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 Evid...

Страница 6: ...2 1 SCHEMATIC DIAGRAM Model...

Страница 7: ...ength among the molecule and changed to microscopic microwave heating Microwave heating not only concerned the nature of the matter itself but also closely connected with the electric field strength a...

Страница 8: ...her the motor the thermal cutout the transformer or the capacitor are electricity leaking 2 Examination of the resistance value of the microwave oven Close the door set the time the oven is at operati...

Страница 9: ...a new one If it is enough to 3 4x check the filament resistance of the magnetron measure the filament plug with the Rx1 grade of a multi meter FIG 5 6 If it is open circuited it indicates the magnetr...

Страница 10: ...ohm slowly Change the rod to different polarity the reading repeat from zero to nine mega ohm FIG 5 11 it means the capacitor is normal If the indicator of the multi meter can t point out from zero t...

Страница 11: ...and the oven are serious loosed after the door closed Magnetron Fig 5 13 Fig 5 14 Fig 5 15 6 The crack of the door shielding net cover Before repairing check whether the above listed point are existed...

Страница 12: ...l one If the resistance value is between 15 22k it indicates the turntable motor is normal then check the connecting shaft weave If the plastic that the shaft insert in has broken a new shaft weave sh...

Страница 13: ...2 Insert the plug securely 3 Change the weave 1 Change the fan motor 2 Change the fan 3 Insert the plug 4 Overhauling them 5 Repairing it 5 The oven can heat within 2 3 minutes but can not heat from t...

Страница 14: ...manufacturer and CDRH FDA immediately 2 Interlock Assembly Replacement and Adjustment 2 1 If you suspect defective primary secondary or monitor interlock switches use your ohmmeter digital or analog t...

Страница 15: ...efore installation 4 2 Perform required checks and tests as described in Chapter 7 before releasing the oven to the owner Conduct a Microwave Leakage Test Refer to Section 7 5 at the magnetron area pr...

Страница 16: ...the operation 3 7 Hold by the handle portion the probe cone spacer perpendicular to the areas under test for RF emissions Move the probe at a speed of no faster than 1 inch per second The areas under...

Страница 17: ...D06 D08 D14 D05 S03 S05 D 00 ASS Y DOOR 1 D 01 ASS Y DOOR FRAME 1 D 02 LATCH 1 D 03 SPRING LATCH 1 D 05 BARRIER SCREEN I 1 D 06 BARRIER SCREEN O 1 D 07 PANEL DOOR 1 D 08 GASKET DOOR 1 D 14 HANDLE 1 S...

Страница 18: ...Motor Fan Guide Fan W02 W03 W01 Z15 Cover Cavity Lamp 4 8 Screw 4 8 7 ST4 8TB S09 CT4 10HwBHC CT4 8TBHC ST4 12PwBHC 4 Screw 4 10 4 10 4 Screw 4 8 4 8 4 12 Screw 4 12 2 S08 S07 S05 ST4 8PBHC 4 8 Screw...

Отзывы: