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(chu)現斷(duan)相時，相序繼電(dian)(dian)(dian)(dian)(dian)器動作(zuo)切斷(duan)a全回路，使電(dian)(dian)(dian)(dian)(dian)梯(ti)停止(zhi)運行。這(zhe)種(zhong)故(gu)障多(duo)出(chu)在(zai)繼電(dian)(dian)(dian)(dian)(dian)器邏輯控(kong)(kong)制(zhi)的(de)(de)電(dian)(dian)(dian)(dian)(dian)梯(ti)，因為是老式(shi)電(dian)(dian)(dian)(dian)(dian)梯(ti)，電(dian)(dian)(dian)(dian)(dian)源開關多(duo)為閘刀式(shi)，電(dian)(dian)(dian)(dian)(dian)源經(jing)過j限開關，再送至電(dian)(dian)(dian)(dian)(dian)梯(ti)控(kong)(kong)制(zhi)柜、電(dian)(dian)(dian)(dian)(dian)源流經(jing)的(de)(de)兩(liang)個開關，共六根保險絲(si)。電(dian)(dian)(dian)(dian)(dian)梯(ti)運行、起動，電(dian)(dian)(dian)(dian)(dian)流都很大(da)。經(jing)過一段時間運行，如維保人員不及(ji)時檢查，保險絲(si)與螺(luo)絲(si)連接(jie)處易(yi)燒斷(duan)，電(dian)(dian)(dian)(dian)(dian)梯(ti)斷(duan)相，引(yin)起停梯(ti)，輕則關人，重則發生事故(gu)。

主要預防措施：

①保養人員要經常巡視檢查，發現可疑之處，及時修理(li)，出(chu)現發燙、打火花諸類情形應立即更換(huan)。

②建議用戶將閘刀開(kai)關更(geng)換為(wei)相當容量(liang)的空氣開(kai)關。

③現在設計的電(dian)梯都沒有(you)電(dian)源j限開(kai)關，筆(bi)者(zhe)認為，可以就a全回路略作(zuo)改(gai)動(dong)，即加(jia)裝上(shang)、下j限電(dian)氣開(kai)關串(chuan)聯在a全回路中，拆除原j限開(kai)關。

2、漲繩(sheng)輪開(kai)關(guan)斷開(kai)引起停梯(ti)

像曳引繩(sheng)(sheng)一樣，限(xian)速器繩(sheng)(sheng)同樣會在(zai)使用(yong)過程中伸長。由于底坑漲繩(sheng)(sheng)輪(lun)重(zhong)錘的作用(yong)，漲繩(sheng)(sheng)輪(lun)開(kai)(kai)關打板偏移，直到斷開(kai)(kai)開(kai)(kai)關導(dao)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(jian)查一(yi)次(ci)，運行一(yi)年(nian)以后，三(san)個月(yue)檢(jian)查一(yi)次(ci)，如此即(ji)可防(fang)患于未(wei)然。由(you)于廳門(men)密(mi)封不嚴，井道有墻洞(dong)等各種原(yuan)因，老(lao)鼠竄(cuan)入井道時有的(de)會摔死，有的(de)掉(diao)入底(di)坑因想方設(she)法(fa)逃出竄(cuan)入繩輪而卡入其中，電梯向下運行導致a全鉗開關動(dong)作，有的(de)限速器(qi)開關也一(yi)起聯動(dong)。