隨著科技的進步，電梯技術水平不斷提高，其運行的可靠性明顯加大。在維修保養中，一些比較典型的停梯故障需要及時排出。

1、斷相引起停梯

當三相(xiang)電(dian)(dian)(dian)(dian)源(yuan)(yuan)出現(xian)斷相(xiang)時，相(xiang)序繼電(dian)(dian)(dian)(dian)器(qi)動作切斷a全回路，使電(dian)(dian)(dian)(dian)梯(ti)(ti)停止(zhi)運行(xing)。這種故障多(duo)出在繼電(dian)(dian)(dian)(dian)器(qi)邏輯控制的電(dian)(dian)(dian)(dian)梯(ti)(ti)，因為(wei)是老(lao)式電(dian)(dian)(dian)(dian)梯(ti)(ti)，電(dian)(dian)(dian)(dian)源(yuan)(yuan)開(kai)關多(duo)為(wei)閘(zha)刀式，電(dian)(dian)(dian)(dian)源(yuan)(yuan)經過j限開(kai)關，再(zai)送(song)至電(dian)(dian)(dian)(dian)梯(ti)(ti)控制柜、電(dian)(dian)(dian)(dian)源(yuan)(yuan)流經的兩個開(kai)關，共六根保(bao)險絲。電(dian)(dian)(dian)(dian)梯(ti)(ti)運行(xing)、起動，電(dian)(dian)(dian)(dian)流都很(hen)大。經過一(yi)段(duan)時間運行(xing)，如維保(bao)人員不及時檢(jian)查，保(bao)險絲與螺絲連接處易燒斷，電(dian)(dian)(dian)(dian)梯(ti)(ti)斷相(xiang)，引起停梯(ti)(ti)，輕(qing)則關人，重(zhong)則發生事故。

主要預防措施：

①保養(yang)人(ren)員要經常巡視(shi)檢查，發(fa)現可疑之處，及時修(xiu)理，出(chu)現發(fa)燙、打火花諸類情形應(ying)立即更(geng)換(huan)。

②建議用(yong)戶(hu)將閘(zha)刀(dao)開關更換為(wei)相當容(rong)量(liang)的空氣開關。

③現在(zai)設計的電(dian)梯都沒有電(dian)源j限(xian)開(kai)關，筆者認為，可以(yi)就a全(quan)回(hui)(hui)路略作改動，即加裝上、下j限(xian)電(dian)氣開(kai)關串聯在(zai)a全(quan)回(hui)(hui)路中，拆(chai)除原j限(xian)開(kai)關。

2、漲(zhang)繩(sheng)輪(lun)開(kai)關斷開(kai)引起停(ting)梯(ti)

像曳引繩(sheng)一(yi)樣，限速器繩(sheng)同樣會(hui)在使(shi)用(yong)過程中伸(shen)長。由(you)于底坑漲繩(sheng)輪(lun)重(zhong)錘的作用(yong)，漲繩(sheng)輪(lun)開(kai)關打板偏移，直到斷開(kai)開(kai)關導致停(ting)梯。

對于電梯安裝的新裝電梯，電梯安裝人(ren)員須每月檢(jian)查一次，運(yun)行一年以后，三個月檢(jian)查一次，如此即可(ke)防患(huan)于未然。由于廳門(men)密封不嚴，井道有墻洞等各種(zhong)原因，老鼠(shu)竄入(ru)井道時有的會摔死(si)，有的掉(diao)入(ru)底坑因想(xiang)方(fang)設法(fa)逃(tao)出竄入(ru)繩輪而卡(ka)入(ru)其中，電梯向(xiang)下運(yun)行導(dao)致a全鉗開(kai)關(guan)動作，有的限速器開(kai)關(guan)也一起聯(lian)動。