20
E30SO75ESS
Q
DAMPER SWITCH TEST
TEST PROCEDURES
PROCEDURE
LETTER
COMPONENT TEST
3. Open the oven door and block it open.
4. Discharge the high voltage capacitor.
5. Remove the back plate from the oven, referring to “BACK PLATE REMOVAL”.
6. Disconnect connector-E from the control unit. Measure the resistance of the thermistor with an ohmmeter.
Connect the ohmmeter leads to Pin No’s B-5 and B-6.
Room Temperature
Resistance
68
ο
F(20
ο
C) - 86
ο
F(30
ο
C)
Approx. 360 k
Ω
- 152 K
Ω
7. If the meter does not indicate above resistance, replace the thermistor.
8. Reconnect all leads removed from components during testing.
9. Reinstall the outer case (cabinet).
10. Reconnect the power supply cord after the outer case is installed.
11. Run the oven and check all functions.
When the power cord is plugged into the wall receptacle and 240 volts A.C. is supplied to the damper
motor, the motor operates until the damper is opened and the damper switch closes. Then the damper
motor stops operation.
If the damper motor does not operate, check for A.C. voltage with a voltmeter at the motor.
1. Disconnect the power supply cord.
2. Remove the outer case cabinet, referring to “OUTER CASE CABINET REMOVAL”.
3. Open the oven door and block it open.
4. Discharge the high voltage capacitor.
5. Remove the back plate from the oven, referring to “BACK PLATE REMOVAL”.
6. Disconnect the leads to the primary of the power transformer.
7. Ensure that the leads remain isolated from other components and oven chassis by using insulation
tape.
8. Disconnect the wire leads of motor and connect the meter leads to the wire leads of main wire harness.
9. Reconnect the power cord into the wall receptacle.
10.If 240 volts A.C. is indicated at the wire leads, replace the motor and if 240 volts A.C. is not indicated,
check the wire harness and control unit.
11.Disconnect the power supply cord.
12.Open the door and block it open.
13.Discharge high voltage capacitor.
14.Reconnect all leads removed from components during testing.
15.Reinstall the outer case (cabinet ) and the back plate.
16.Reconnect the power supply cord after the outer case and the back plate are installed.
17.Run the oven and check all functions.
P
DAMPER MOTOR TEST
1. Disconnect the power supply cord, and then remove outer case.
2. Open the door and block it open.
3. Discharge high voltage capacitor.
4. Disconnect the leads to the primary of the power transformer.
5. Ensure that the leads remain isolated from other components and oven chassis by using insulation tape.
6. Disconnect the wire leads from the switch terminals and connect ohmmeter leads to the common (COM.)
and normally open (N.O.) terminals of the switch.
6-1. When switch actuator is pushed by the damper motor cam, the meter should be indicated a closed circuit.
6-2. When power cord is plugged into the wall receptacle, the damper motor operates and damper cam will start
to rotate. When the switch actuator is released, the meter should be indicated an open circuit.
7. If improper operation is indicated, replace the damper switch.
8. Disconnect the power supply cord, and then remove outer case.
9. Open the door and block it open.
10. Discharge high voltage capacitor.
11. Reconnect all leads removed from components during testing.
12. Reinstall the outer case (cabinet).
13. Reconnect the power supply cord after the outer case is installed.
14. Run the oven and check all functions.
Summary of Contents for E30SO75ESS - 30" Wall Oven
Page 50: ...48 E30SO75ESS NOTES ...
Page 51: ...49 E30SO75ESS NOTES ...
