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通过维修或者更换水泵和井泵,以提高其效率,常常会取得显著的节约管理费用的效果。一般是根据机井管理运行的记录来进行其更换分析(工程效益中一部分)。通常是按能产生最大的净效益或者按最低水费作为分析衡量的标准。并按旧系统的年度单位水费大于新系统的换算年度最低单位水费时,作为选择最合适维修或更换时间的依据。
By maintaining or replacing pumps and well pumps to increase their efficiency, significant savings in management costs are often achieved. The replacement analysis is usually based on the records of the well management operations (part of the engineering benefits). It is usually based on the standard that can produce the greatest net benefit or the lowest water fee as an analysis. And according to the annual unit of the old system water fee is greater than the conversion of the new system, the annual minimum unit water fee, as the basis for selecting the most appropriate repair or replacement time.