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1. High voltage is present at the high voltage terminal of the high voltage transforner during any cook-

ing cycle.

2. It is neither necessary nor advisable to attempt measurement of the high voltage.
3. Before touching any oven components or wiring, always unplug the oven from its power source and

discharge the capacitor (see page 14).

1. High voltage transformer

(A) Remove connections form the transformer terminals and check continuity.
(B) Normal readings should be as follows:

Secondary winding ........ Approx. 100

Ω

¡

10%

Filament winding ........................... Approx. 0

Ω

Primary winding ............................ Approx. 0

Ω

2. High voltage capacitor

(A) Check continuity of capacitor with meter on the highest OHM scale.
(B) A normal capacitor will show continuity for a short time, and then indicate 9M

Ω

once the capac-

itor is charged.

(C)  A shorted capacitor will show continuous continuity.
(D) An open capacitor will show constant 9M

Ω

.

(E) Resistance between each terminal and chasis should be infinite.

3. High voltage diode

(A) Isolate the diode from the circuit by disconnecting the leads.
(B) With the ohmmeter set on the highest resistance scale, measure the resistance across the

diode terminals.
Reverse the meter leads and again observe the resistance reading. Meter with 6V, 9V or high-
er voltage batteries should be used to check the front-back resistance of the diode, otherwise
an infinite resistance may be read in both directions. A normal diodes resistance will be infinite
in one direction and several hundred k

Ω

in the other direction.

4. Magnetron

For complete magnetron diagnosis, refer to “Measurement of the Microwave Output Power”.
(Page 8) Continuity checks can only indicate and open filament or a shorted magnetron. 
To diagnose for an open filament or shorted magnetron.
(A) Isolate magnetron from the circuit by disconecting the leads.
(B) A continuity check across magnetron filament terminals should indicate ohm or less.
(C) A continuity check between each filament terminal and magnetron case should read open.

5. Interlock monitor switch

The interlock switch can be checked with an ohmmeter. Isolate the switch and then connect the
meter leads to the common (COM) and normally close (NC) terminals of the switch. The meter
should indicate an open circuit with the door closed and a closed circuit with the door opened.
In case improper operation is indicated, make the necessary switch adjustment or replacement.

6. Primary and secondary interlock switch

The primary and secondary interlock switch can be checked with an ohmmeter. Isolate the switch
and connect the meter leads to the common (COM) and normally open (NO) terminals of the
switch. 
The meter should indicate an open circuit with the door opened and a closed circuit with the door
closed. In case improper operation is indicated, make the necessary switch adjustment or replace-
ment.

25

COMPONENT TEST PROCEDURE

Содержание KOG-3667OS

Страница 1: ...TD 1 2 3 Power Timer Caution In this Manual some parts can be changed for improving their performance without notice in the parts list So if you need the latest parts information please refer to PPL P...

Страница 2: ...W T YfV X V XeV HeW T YfV X V XeV HeW T YfV X V XeV HeW T YfV X V XeV HeW T YfV X V XeV HeW T YfV X V XeV HeW T YfV X V XeV HeW T YfV X V XeV HeW T YfV X V XeV HeW T YfV X V XeV HeW T YfV X V XeV HeW...

Страница 3: ...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 and CDRH immediately 3 CAUTION This Devi...

Страница 4: ...CY OUTSIDE DIMENSIONS W X H X D CAVITY DIMENSIONS W X H X D NET WEIGHT TIMER FUNCTION SELECTIONS MICROWAVE POWER LEVELS Specification 230V 50Hz SINGLE PHASE WITH EARTHING 1200W 1050W 2200W 800W IEC705...

Страница 5: ...ock system Door viewing screen Allows viewing of food The screen is designed so that light can pass through but not the microwaves Glass cooking tray Made of special heat resistant glass Food in a pro...

Страница 6: ...e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e g g g g g g CAUTION Maintenances works like the replacing of th...

Страница 7: ...not let the timer continue to operate after removing food Note When using the GRILL or COMBI mode Do not open the door so often the tempera ture inside the oven decrease and the cook ing may not comp...

Страница 8: ...er is switched on 5 Heating time should be exactly 52 seconds Heating time is measured while the microwave generator is operating at full power The filament heat up time for magnetrons is not included...

Страница 9: ...d set it in a cavity D Close the door and operate the oven E Measure the leakage by using microwave energy survery meter with dual ranges set to 2450 MHz Measured radiation leakage must not exceed the...

Страница 10: ...GRILL THERMOSTAT GY BK RD COM BK BK BK BL BL BL BL GY GY GY FM GM NOTE RD RED WH WHITE BK BLACK GN GREEN BR BROWN OR ORANGE BL BLUE GY GRAY GE GREEN YELLOW CL CAVITY LAMP FM FAN BLOWER MOTOR GM GEARED...

Страница 11: ...RD COM BK BK BK BL BL BL BR BR BR BL BL GY GY GY FM GM NOTE RD RED WH WHITE BK BLACK GN GREEN BR BROWN OR ORANGE BL BLUE GY GRAY GE GREEN YELLOW CL CAVITY LAMP FM FAN BLOWER MOTOR GM GEARED MOTOR TM T...

Страница 12: ...h voltage transformer and this secondary voltage is increased by the action of the diode and the charging of the high voltage capacitor This resultant D C voltage is then applied to the anode of the m...

Страница 13: ...r timer motor and turntable motor stop rotating Oven lamp turn off As soon as the door is opened monitor switch close NC to create the short circuit If the contacts of primary interlock switch and sec...

Страница 14: ...d the negative high terminal of the high voltage capacitor by using a properly insulated screw driber to discharge 4 When the 15 Amp fuse is blown out to operation of the monitor switch replace primar...

Страница 15: ...m door assembly 4 Reverse the above for reassembly taking care to replace fixing glue 3 To remove door parts DISASSEMBLY AND ASSEMBLY NOTE After replacing the door preform a check of correct alignment...

Страница 16: ...seal to oven front surface 2 Tighten two screws 3 To reduce gap located on part C See Fig A 1 Loosen a screw on the interlock switch assembly located at the bottom of the oven body 2 Draw the interloc...

Страница 17: ...which secure the VPC coupler B08 5 Pull out the VPC coupler B08 VPC knob B13 and the flat spring B07 from the control panel B02 6 Remove two screws B12 which secure the timer ass y B11 7 Pull out the...

Страница 18: ...tor holder 2 Remove the H V diode from the capac itor holder 3 Reverse the above steps for reassembly High voltage circuit wiring 7 To remove magnetron 1 Remove three screws which secure the magnetron...

Страница 19: ...h each magnetron to prevent microwave leakage Whenever repair work is carried out on magnetron check the microwave leakage It shall not exceed 4mW cm2 for a fully assembled oven with door normally clo...

Страница 20: ...ODE Q TY DESCRIPTION REMARK 1 INSULATOR HEATER 3513301100 1 SPP T0 8 2 HEATER 3512801700 1 230V 1000W 3 SCREW MACHINE 7002500613 1 TRS 5X6 MFCR 4 NUT HEX 7392500008 1 6N 2 5 SUS 5 SCREW MACHINE 700240...

Страница 21: ...e button of the micro switch Then the button of the primary interlock switch bring it under on condition Adjustment 1 When the door is closed the switch button is pushed by the hook The movement of th...

Страница 22: ...ollowing diagram 2 Check the connection of monitor switch after replacement 3 Pereform the electrical continuity check of interlock switches and microwave emission test men tioned in this manual Inter...

Страница 23: ...ce primary secondary inter lock switch and interlock monitor switch Replace high voltage Capacitor Replace high voltage transformer Replace thermostat Replace Power supply cord Disconnect one side of...

Страница 24: ...Replace primary interlock switch secondary interlock switch Replace magnetron Replace high voltage transformer Check the diode for continuity in the reverse and normal directions Replace high voltage...

Страница 25: ...herwise an infinite resistance may be read in both directions A normal diodes resistance will be infinite in one direction and several hundred k in the other direction 4 Magnetron For complete magnetr...

Страница 26: ...on terminal of the monitor switch disconnected 3 In case of secondary interlock switch Lamp on or zero resistance Condition 1 Door is closed 2 In case of primary interlock check Lamp on or zero resist...

Страница 27: ...3512300200 PP 1 A08 HOOK 3513100710 POM 1 A09 SPRING HOOK 3515101500 PW1 1 A10 HANDLE DOOR 3512601300 ABS 1 A11 SCREW TAPPING 7S341W40B1 T2S PAN 4X12 PW MFZN 2 27 1 Door Assembly EXPLODED AND PARTS L...

Страница 28: ...3515101600 SUS301 T0 5 1 B08 COUPLER VPC KNOB 3517400510 POM 1 B09 SCREW TAPPING 7S341W40B1 T2S PAN 4X12 PW MFZN 1 B10 COUPLER TIMER 3517400400 POM 1 B11 TIMER 3518203800 KN35MKD 1 B12 SCREW TAPPING 7...

Страница 29: ...8 F07 F09 F10 F11 F12 F14 F16 F17 F18 F19 F20 F21 F52 F13 F15 F06 F05 F04 F03 F02 F01 A00 B00 F47 F46 F45 F44 F43 F42 F41 F40 F39 F50 F38 F37 F36 F35 F34 F33 F32 F31 F22 F23 F24 F25 F26 F27 F28 F29 F3...

Страница 30: ...NYLON 66 1 F19 CORD POWER AS 35113AAQG5 3X1 5 60X60 120 RTML 1 F20 MAGNETRON 3518002200 2M218H MF I 1 F21 SCREW SPECIAL 7S327U40A1 T2 FG 4X10 PW SE MFZN 3 F22 SCREW SPECIAL 7S312X40A1 T1 TRS 4X10 SE...

Страница 31: ...F46 SCREW TAPPING 7121400811 T2S PAN 4X8 MFZN 2 F47 MOTOR SYNCRO 3966310100 GM 16 24FD12 1 F S ACTING RELAY 4416W67211 JALA TM AC 220V 1 FORGERMANY F 1 HARNESS MAIN 3512710100 KOG 3615OS 1 3512710110...

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