FEED WATER SYSTEM AND OPERATIONAL METHOD FOR FEED WATER SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a feed water system capable of reducing its maintenance frequency.;SOLUTION: A feed water system comprises a pump 2, a motor 3 for driving the pump 2, a flow rate sensor 24 for detecting a state of small amount where a flow rate of water discharged out of the pump 2 is less than a prescribed small amount and a control part 20 for controlling an operation of the pump 2. The control part 20 executes at least one time of an operation of the pump 2 and a retry operation including a stopped state when the flow rate sensor 24 does not detect the small amount state during the stopped state of the pump 2. The retry operation includes an abnormal state releasing operation for stopping the pump 2 after operation of the pump 2 only for a predetermined time and a confirmation operation for confirming whether or not the flow rate sensor 24 detects the small amount of water state after the abnormal state releasing operation.;SELECTED DRAWING: Figure 2;COPYRIGHT: (C)2018,JPO&INPIT