| 摘要 |
PURPOSE:To attain sequentially control of plural modes by means of a pushbutton and also to improve the addition of the plural modes by changing over the mode of sequential control depending on the time when the pushbutton is depressed by the operator. CONSTITUTION:When the operator desires the sequential control of normal stop, the pushbutton 6 is depressed of a timer shorter than the setting value of a timer 7. When the depressing time of the pushbutton 6 is short, the timer 7 does not count up, only the delivery valve is shut and after the delivery valve is shut, the pump is stopped. On the other hand, when the sequential control of emergency stop is required, the operator keeps depressing the pushbutton 6 for the setting value or over of the timer 7. Thus, the timer 7 is counted up and the pump is stopped in parallel with an operation command output of the delivery valve. |
