| 摘要 |
PURPOSE: To improve the economics, by constituting a control circuit so that a flush valve is changed over from the closed position to cut off water to the closed position to drain water by the operation of the changeover switch, for fear of freezing. CONSTITUTION: When an operating switch P is turned on, an electric source relay R is actuated and the contact (r) is switched over and current is conducted in the motor M and further, a flush valve V is driven to the opening side. Flushing water is conducted into a toilet bowl for a certain time by the opened flushing valve. The condenser Ct is discharged and the relay is extinguished to return the contact (r) to the original position and the flush valve V is driven to the closing direction by the motor M. When the valve V is closed, the motor is stopped to bring the valve V to the closed state to cut off water. When the changeover switch S is switched over in the closed state of the valve V, the valve is further driven to the closing direction by the motor M. In this time, a confirmation relay R' is actuated and the contact (r') is switched over and the motor is disconnected to bring the valve V to the closed state to cut off water. |
