Operational Description - Whirlpool AVM595 WH Service Manual

WHIRLPOOL CONSUMER SERVICES

OPERATIONAL DESCRIPTION

The following describes the basic operation of the appliance. Please refer to the schematic
diagram when reading:
Food is placed inside the oven and the door is closed. "Start" button is not pressed:
Primary and secondary interlock switches are closed. Monitor switch is open. Door switch is
closed. Relay 1 and Relay 2 are both open.
When the timer is set for a certain cooking time, cook power is set and the "Start"
button pressed:
Relay 1 is closed. AC power is supplied to the cavity lamp, fan motor and turntable motor.
Depending on the power level setting, AC power is supplied to the HV transformer through
Relay 2 with the duty cycle corresponding to the power level setting. The display timer will start
to count down.
When the timer counts to Zero:
Relay 1 and Relay 2 will be and all AC power to the motor, lamp and HV transformer will be cut.
The control board buzzer will give a "beep" sound to give an OFF signal.
When the door is open during cooking:
Primary and secondary interlock switches are opened. Door switch is opened. The monitor
switch is closed. The light will remain on but all other AC power will be cut.
Pure microwave cooking:
Ten power level settings are available for pure microwave cooking. This can be adjusted using
the power switch on the touch foil. Power level control is achieved by switching the magnetron
ON and OFF periodically. The oven works on 15 second cycle and the following indicate the
correct ON/OFF timing.
Power setting
10 (highest)
9
8
7
6
5
4
3
2
1 (lowest)
MICROWAVE AND LEAKAGE TESTS
ON time
100%
approx 93%
approx 87%
approx 80%
approx 67%
approx 60%
approx 53%
approx 40%
approx 33%
approx 27%
Models AVM595 WH
AVM595 BL
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