(三)调节水泵性能。对现有正在使用中的水泵,有些由于选型不注意,或选型方法不够正确;有些确因水泵型号不全,只好选用相近的泵型;有些因缺乏这方面知识,不管合用不合用,只要是泵就行。凡此种种,造成高扬程泵在低扬程地区使用,或者泵扬程与实际使用不配套,致使水泵长期在低效率状态下运行,浪费了大量的能源。 (C) adjust the pump performance. Some of the existing pump in use, due to the selection does not pay attention, or the selection method is not correct enough; some really because of the pump model is not complete, had chosen similar pump; some due to lack of knowledge, regardless of the combined use of non-use, as long as Is the pump on the line. All these, resulting in high-lift pump in the low-lift areas, or pump head and the actual use is not complete, resulting in long-term low-efficiency pump operation, wasting a lot of energy.