| 摘要 |
<p>PURPOSE:To provide a pump device failure detecting method for detecting the failure of either one of plural pumps. CONSTITUTION:When either one of plural pumps 11, 12, start-stop controlled repeatedly in the specified order by an automatic operating device, is in failure, the integrated value of the counter 17 or 18 of the following pump to be operated after the pump in failure reaches the set value of more than 2 by adding the frequency of operation in the case of the following pump being operation- started without the counter 17 or 18 of the following pump being reset. This fact on the integrated value is detected, and a failure signal is sent our That is, in the case of either one of the pumps being in failure, the addition of 1 is left without the reset of the counter of the following pump to be operated after the pump in failure. In this state, if the concerned following pump is operation-started and the frequency of operation is added, the integrated value of the concerned counter reaches the set value of more than 2. The pump in failure is thereby informed.</p> |
