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

當三相電(dian)(dian)(dian)(dian)(dian)源出現斷(duan)(duan)相時(shi)(shi)，相序繼電(dian)(dian)(dian)(dian)(dian)器動作切(qie)斷(duan)(duan)a全回(hui)路(lu)，使電(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)(ti)停止運行。這種故障多出在繼電(dian)(dian)(dian)(dian)(dian)器邏輯控制(zhi)的電(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)(ti)，因為是老式(shi)電(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)(ti)，電(dian)(dian)(dian)(dian)(dian)源開關多為閘刀(dao)式(shi)，電(dian)(dian)(dian)(dian)(dian)源經過(guo)j限開關，再送(song)至電(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)(ti)控制(zhi)柜、電(dian)(dian)(dian)(dian)(dian)源流(liu)經的兩個開關，共六根保險(xian)絲(si)。電(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)(ti)運行、起(qi)動，電(dian)(dian)(dian)(dian)(dian)流(liu)都很大。經過(guo)一段(duan)時(shi)(shi)間運行，如(ru)維(wei)保人員不及時(shi)(shi)檢查，保險(xian)絲(si)與螺絲(si)連接處易燒斷(duan)(duan)，電(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)(ti)斷(duan)(duan)相，引起(qi)停梯(ti)(ti)(ti)，輕則關人，重則發生事故。

主要預防措施：

①保養人(ren)員要經(jing)常巡視檢查，發現(xian)可疑之處，及時修理，出現(xian)發燙(tang)、打火花諸類(lei)情形應立即(ji)更換。

②建議用戶(hu)將閘刀開關更換為相當容(rong)量的空氣開關。

③現在設計的電梯都沒有(you)電源j限(xian)(xian)開關，筆者認為，可以就a全回路(lu)略作改(gai)動，即加裝上、下j限(xian)(xian)電氣(qi)開關串聯在a全回路(lu)中，拆(chai)除原(yuan)j限(xian)(xian)開關。

2、漲(zhang)繩輪(lun)開關斷開引起(qi)停梯

像曳(ye)引繩(sheng)一樣，限速器(qi)繩(sheng)同(tong)樣會在使用過程中伸長(chang)。由于底坑(keng)漲繩(sheng)輪(lun)重錘的作(zuo)用，漲繩(sheng)輪(lun)開關打板(ban)偏移，直到斷開開關導致(zhi)停梯。

對于電梯安裝的新裝電梯，電梯安裝人員須每月檢查一(yi)次，運行一(yi)年(nian)以后，三個月檢查一(yi)次，如此即可防患于未然。由于廳門密封不(bu)嚴，井(jing)道(dao)有(you)墻洞等各種原因(yin)，老鼠竄入井(jing)道(dao)時有(you)的會摔死，有(you)的掉入底(di)坑因(yin)想方設法逃出竄入繩輪而(er)卡(ka)入其中，電梯向(xiang)下運行導致a全鉗開(kai)關動作，有(you)的限速器開(kai)關也一(yi)起聯動。