有相当一部分用户因力士乐原配电动机损坏，就随意配上另一台电动机带动，结果造成了力士乐叶片泵流量少、水泵转速过低、扬程低抽不上水后果。

    力士乐叶片泵传动带磨损。有许多大型离水泵采用带传,因长期使用,传动带磨损而松也,出现打滑现象，降低了水泵转速。

    REXROTH叶片泵安装不当。两带轮中心距太小或两轴不太平行，传动带紧边安装到上面，致使包角太小，两带轮直径计算差错以及联轴传动水泵两轴偏心距较大等，均会造成水泵转速变化。

    REXROTH叶片泵本身机械故障。叶轮与泵轴紧固螺母松脱或泵轴变形弯曲，造成叶轮多移，直接与泵体摩擦，或轴承损坏，都有可能降低水泵转速。

    REXROTH叶片泵依靠旋转叶轮对液体的作用把原动机的机械能传递给液体。由于离心泵的作用液体从叶轮进口流向出口的过程中，其速度能和压力能都得到增加，被叶轮排出的液体经过压出室 ，大部分速度能转换成压力能，然后沿排出管路输送出去。

上海维特锐在德国与REXROTH合作，可长期稳定供应力士乐叶片泵，力士乐电磁阀，REXROTH导轨，力士乐柱塞泵等产品

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