| 摘要 |
PROBLEM TO BE SOLVED: To provide an abnormality diagnostic method of a drainage pump and its device, without requiring much labor, by properly, easily and visually confirming a secular change in performance reduction and a changing tendency of a determining value of a management object by abrasion of a part of the drainage pump, without requiring to artificially and finely manage a judging criterion value adapted with respective machine places, even in a state of being different in an operation condition with respective machine places. SOLUTION: Abnormality is properly diagnosed by comparing the judging criterion value properly automatically updated to a judging criterion value calculated by statistical processing, with a determining value of a determining object, by using accumulation data stored and accumulated by being arithmetically processed by using water level change time and a planned delivery quantity of the drainage pumps P1 and P2, by using a control device 3 having the functions such as preservation and arithmetic processing of data measured with every unit time and starting-stopping control of the drainage pumps P1 and P2, based on signals of a water tank 1 capable of arithmetically operating the volume from a water level variation, one or a plurality of drainage pumps P1 and P2 and a water level sensor 2 detecting a water level. COPYRIGHT: (C)2008,JPO&INPIT
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