PURPOSE: To eliminate an abnormality cause and to perform a normal operation by automatically turning off a power source switch by short neglecting time after a washing operation is ended and automatically turning off the power source switch by long neglecting time when the abnormality of an operation is generated in the middle of a washing operation.
CONSTITUTION: In the case of ending all processes, when signals are not sent to a microcomputer 8 by the operation of external operation switches 4 and 5 within five minutes, the signals of the operation of a solenoid 7 are sent for two seconds from the microcomputer 8 and the power source switch is turned OFF. In the case that mechanical locking or electrical disconnection is generated and the power source switch 2 is not turned OFF, when the operation signals of the solenoid 7 for the OFF of the power source switch 2 are sent for two seconds, the power source switch is turned OFF. The operation signals of the solenoid 7 are continuously sent for two seconds in every five minutes until the signals from the external operation switches 4 and 5 are generated, the opportunities of the OFF of the power source switch 2 in the case of the mechanical locking are increased and safety is improved. Also, since it is the short-time energizing of two seconds, the temperature of the solenoid 7 is not elevated and the burning of the solenoid 7 is prevented.
TOSHIMITSU HIROSHI
KAMANO TOSHIYASU
SHIKAMORI TAMOTSU
HIRAYAMA MASAYOSHI
