有相當(dāng)一部分用戶因力士樂(lè)原配電動(dòng)機(jī)損壞，就隨意配上另一臺(tái)電動(dòng)機(jī)帶動(dòng)，結(jié)果造成了力士樂(lè)葉片泵流量少、水泵轉(zhuǎn)速過(guò)低、揚(yáng)程低抽不上水后果。

    力士樂(lè)葉片泵傳動(dòng)帶磨損。有許多大型離水泵采用帶傳,因長(zhǎng)期使用,傳動(dòng)帶磨損而松也,出現(xiàn)打滑現(xiàn)象，降低了水泵轉(zhuǎn)速。

    REXROTH葉片泵安裝不當(dāng)。兩帶輪中心距太小或兩軸不太平行，傳動(dòng)帶緊邊安裝到上面，致使包角太小，兩帶輪直徑計(jì)算差錯(cuò)以及聯(lián)軸傳動(dòng)水泵兩軸偏心距較大等，均會(huì)造成水泵轉(zhuǎn)速變化。

    REXROTH葉片泵本身機(jī)械故障。葉輪與泵軸緊固螺母松脫或泵軸變形彎曲，造成葉輪多移，直接與泵體摩擦，或軸承損壞，都有可能降低水泵轉(zhuǎn)速。

    REXROTH葉片泵依靠旋轉(zhuǎn)葉輪對(duì)液體的作用把原動(dòng)機(jī)的機(jī)械能傳遞給液體。由于離心泵的作用液體從葉輪進(jìn)口流向出口的過(guò)程中，其速度能和壓力能都得到增加，被葉輪排出的液體經(jīng)過(guò)壓出室 ，大部分速度能轉(zhuǎn)換成壓力能，然后沿排出管路輸送出去。

上海維特銳在德國(guó)與REXROTH合作，可長(zhǎng)期穩(wěn)定供應(yīng)力士樂(lè)葉片泵，力士樂(lè)電磁閥，REXROTH導(dǎo)軌，力士樂(lè)柱塞泵等產(chǎn)品

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