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)(dian)源(yuan)出現斷相(xiang)時(shi)(shi)，相(xiang)序繼電(dian)(dian)(dian)(dian)(dian)器動作切斷a全回路(lu)，使電(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)停(ting)止(zhi)運(yun)(yun)行。這種(zhong)故障(zhang)多(duo)出在繼電(dian)(dian)(dian)(dian)(dian)器邏輯(ji)控制(zhi)的電(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)，因為(wei)(wei)是老(lao)式電(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)，電(dian)(dian)(dian)(dian)(dian)源(yuan)開關(guan)(guan)多(duo)為(wei)(wei)閘刀式，電(dian)(dian)(dian)(dian)(dian)源(yuan)經過j限開關(guan)(guan)，再送至電(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)控制(zhi)柜、電(dian)(dian)(dian)(dian)(dian)源(yuan)流經的兩個開關(guan)(guan)，共(gong)六根(gen)保(bao)險(xian)絲。電(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)運(yun)(yun)行、起動，電(dian)(dian)(dian)(dian)(dian)流都很大。經過一段時(shi)(shi)間運(yun)(yun)行，如維保(bao)人員不及時(shi)(shi)檢查(cha)，保(bao)險(xian)絲與螺絲連接處(chu)易燒斷，電(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)斷相(xiang)，引(yin)起停(ting)梯(ti)(ti)，輕(qing)則關(guan)(guan)人，重則發生事(shi)故。

主要預防措施：

①保(bao)養人(ren)員要經常巡視(shi)檢(jian)查，發(fa)現(xian)可疑之處，及時修(xiu)理(li)，出現(xian)發(fa)燙(tang)、打火花諸類情形應立即(ji)更換。

②建議(yi)用戶將(jiang)閘刀開(kai)關(guan)更換為相當(dang)容(rong)量的(de)空氣(qi)開(kai)關(guan)。

③現在設計的(de)電梯(ti)都沒有(you)電源j限(xian)開(kai)(kai)關，筆者(zhe)認為，可以就a全回路(lu)略作改動，即加裝上、下j限(xian)電氣開(kai)(kai)關串聯在a全回路(lu)中，拆(chai)除原j限(xian)開(kai)(kai)關。

2、漲繩輪開關斷開引起停梯

像曳引(yin)繩一樣(yang)，限速器繩同樣(yang)會在使用過程中伸長。由于底坑漲(zhang)繩輪重錘的作用，漲(zhang)繩輪開關打板偏移，直到(dao)斷開開關導致停(ting)梯。

對于電梯安裝的新裝電梯，電梯安裝人員須每月(yue)檢查(cha)一(yi)次，運行一(yi)年以后，三個月(yue)檢查(cha)一(yi)次，如此即可(ke)防患于(yu)未然。由于(yu)廳門密(mi)封不嚴(yan)，井(jing)道有墻(qiang)洞(dong)等各種原因(yin)，老鼠竄入井(jing)道時有的(de)(de)會摔死，有的(de)(de)掉入底坑因(yin)想方設(she)法(fa)逃出竄入繩(sheng)輪而卡入其(qi)中，電梯向下運行導致a全鉗開關(guan)動作，有的(de)(de)限(xian)速器開關(guan)也一(yi)起聯(lian)動。