力士樂(lè)換向閥4WEH32D50B6EG24NETZ4

力士樂(lè)換向閥4WEH32D50B/6EG24NETZ4

現(xiàn)場(chǎng)快速判斷電磁閥好壞方法
　　一、首先檢查是不是電磁閥電磁線圈故障？
　　在DCS上給二位閥給開(kāi)或者關(guān)的信號(hào)，然后看電磁閥是否得失電，一般在現(xiàn)場(chǎng)聽(tīng)聲音即可。
　　若聽(tīng)不到，那線圈肯定是有問(wèn)題，至于電磁閥本身是不是有問(wèn)題？（下面解釋）
　　如果電磁線圈問(wèn)題，首先檢查接線，看是不是有虛接，或者有短路現(xiàn)象，如果線路上沒(méi)問(wèn)題就是電磁閥線圈燒壞，可拆下電磁閥的接線，用萬(wàn)用表測(cè)量，如果開(kāi)路，則電磁閥線圈燒壞。原因有線圈受潮，引起絕緣不好而漏磁，造成線圈內(nèi)電流過(guò)大而燒毀，因此要防止雨水進(jìn)入電磁閥。此外，彈簧過(guò)硬，反作用力過(guò)大，線圈匝數(shù)太少，吸力不夠也可使得線圈燒毀。
　　二、若線圈是好的，那就是電磁閥本身的問(wèn)題。
　　一般可以在手動(dòng)調(diào)節(jié)處用一字起由1調(diào)到0位置，使閥打開(kāi)，若是能打開(kāi)就說(shuō)明的確是線圈的問(wèn)題，換個(gè)線圈就可以了，若打不開(kāi)，就拆電磁閥，看是不是閥芯卡住，或者是有雜粒堵，清洗正確應(yīng)該用CCL4，但是考慮到現(xiàn)場(chǎng)沒(méi)有條件的話，可以用汽油，實(shí)在沒(méi)有用水也可以，清洗后可以用現(xiàn)場(chǎng)儀表氣進(jìn)行吹干，拆時(shí)務(wù)必記好各部件的順序，不注意的話，裝的時(shí)候很容易出錯(cuò)，順序記錯(cuò)就算你清洗好電磁閥，即使電磁閥已經(jīng)通了也還是打不開(kāi)的！


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