| 摘要 |
PURPOSE:To reduce the labor of an operator by providing a directing unit giving an operation direction or a stop direction to a cooling water booster pump system in response to the detected temperature of circulating water and an operation directing unit for an intermittent operation. CONSTITUTION:The circulating water temperature detection signal of a temperature detector 16 is outputted to a control device 18. The control device 18 feeds an opening/closing direction signal to a switch 21 opening/closing a cooling water booster pump 12 and an input valve 13. When the temperature Tc of circulating water is a preset temperature Ts or higher, an inlet valve 13 is opened, and the pump 12 is started. When Tc becomes lower than Ts, the operating system is automatically stopped. At Tc<Ts, an interval setter 20 is operated, and the pump system is operated intermittently. Accordingly, the labor of an operator is reduced, and the reliability of the device can be improved. |
