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電(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)通(tong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)后不(bu)能運轉，原因有三個：電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路沒有接通(tong);電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)器損壞(huai);電(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)本(ben)身有問題。實際檢修中(zhong)，一定(ding)要先查電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)插(cha)頭、插(cha)座、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)線(xian)是不(bu)是正(zheng)常(chang)，查清(qing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓是不(bu)是加到電(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)上了，再查電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)器是否(fou)良好，最后才檢查電(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)本(ben)身。電(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)線(xian)圈斷線(xian)、軸承損壞(huai)、轉軸彎曲使定(ding)子(zi)和(he)轉子(zi)相擦(ca)，都會使電(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)不(bu)轉。電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)機(ji)通(tong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)后能轉動(dong)(dong)，但轉動(dong)(dong)并不(bu)正(zheng)常(chang)。常(chang)見的(de)情況有：電(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)運轉無力.只能空(kong)轉，一加負載就(jiu)會停下來，這(zhe)(zhe)多(duo)(duo)是線(xian)圈短路或(huo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)器容(rong)量減小造(zao)成(cheng)(cheng)(cheng)的(de);電(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)啟(qi)動(dong)(dong)后很快發熱，這(zhe)(zhe)多(duo)(duo)是線(xian)圈受(shou)潮(chao)，絕緣下降，使繞(rao)組(zu)局部(bu)短路，或(huo)是定(ding)子(zi)與轉子(zi)相擦(ca)造(zao)成(cheng)(cheng)(cheng);電(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)運轉中(zhong)噪(zao)聲很大，這(zhe)(zhe)多(duo)(duo)是軸承損壞(huai)，轉子(zi)軸向(xiang)間隙過大，轉軸彎曲、松(song)動(dong)(dong)等故(gu)障造(zao)成(cheng)(cheng)(cheng)的(de);電(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)漏電(dian)(dian)(dian)(dian)(dian)(dian)(dian)則多(duo)(duo)是受(shou)潮(chao)嚴重或(huo)繞(rao)組(zu)接地造(zao)成(cheng)(cheng)(cheng)的(de)。

電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)機(ji)(ji)通電(dian)(dian)(dian)(dian)(dian)后不(bu)能(neng)運轉，但(dan)撥動(dong)(dong)一(yi)下電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)軸，就能(neng)遲(chi)緩的啟(qi)動(dong)(dong)，這多半是電(dian)(dian)(dian)(dian)(dian)容(rong)器失效或斷(duan)(duan)開，以及(ji)副繞組斷(duan)(duan)路造成的。啟(qi)動(dong)(dong)時，外力(li)將電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)向哪(na)個方(fang)向轉，電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)就隨(sui)著向這個方(fang)向啟(qi)動(dong)(dong)，這是一(yi)種故障現象。電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)前(qian)后端蓋或是軸承不(bu)同心(xin)，轉子與定(ding)子稍有擠(ji)卡，就會造成啟(qi)動(dong)(dong)困難(nan)，但(dan)一(yi)經啟(qi)動(dong)(dong)就能(neng)正常運轉。電(dian)(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)(dian)壓偏低也會使電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)啟(qi)動(dong)(dong)困難(nan)，但(dan)這與電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)本(ben)身無關。