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(dang)三相(xiang)電(dian)(dian)(dian)(dian)(dian)(dian)源出現斷相(xiang)時，相(xiang)序繼電(dian)(dian)(dian)(dian)(dian)(dian)器動作切斷a全回路(lu)，使(shi)電(dian)(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)(ti)停(ting)止運(yun)行。這(zhe)種故(gu)障多(duo)(duo)出在繼電(dian)(dian)(dian)(dian)(dian)(dian)器邏(luo)輯控制的電(dian)(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)(ti)，因為是老式(shi)電(dian)(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)(ti)，電(dian)(dian)(dian)(dian)(dian)(dian)源開關(guan)(guan)多(duo)(duo)為閘刀式(shi)，電(dian)(dian)(dian)(dian)(dian)(dian)源經過j限開關(guan)(guan)，再(zai)送(song)至電(dian)(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)(ti)控制柜、電(dian)(dian)(dian)(dian)(dian)(dian)源流(liu)經的兩個開關(guan)(guan)，共(gong)六根(gen)保(bao)險絲(si)。電(dian)(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)(ti)運(yun)行、起動，電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)都很大。經過一段時間運(yun)行，如維保(bao)人員不及時檢查，保(bao)險絲(si)與螺(luo)絲(si)連(lian)接(jie)處易燒斷，電(dian)(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)(ti)斷相(xiang)，引起停(ting)梯(ti)(ti)(ti)，輕則關(guan)(guan)人，重則發生事故(gu)。

主要預防措施：

①保(bao)養人員(yuan)要經(jing)常巡視檢查，發現可疑之處，及時(shi)修理，出現發燙、打火(huo)花諸(zhu)類情形應立即(ji)更(geng)換。

②建議用戶將閘刀開關更換為(wei)相當容量的空氣開關。

③現在設計(ji)的電(dian)(dian)梯都沒有電(dian)(dian)源j限(xian)(xian)開關(guan)，筆者(zhe)認為，可(ke)以(yi)就a全(quan)回(hui)路略作改(gai)動(dong)，即加(jia)裝(zhuang)上、下j限(xian)(xian)電(dian)(dian)氣開關(guan)串(chuan)聯在a全(quan)回(hui)路中，拆(chai)除(chu)原j限(xian)(xian)開關(guan)。

2、漲繩(sheng)輪開(kai)關斷開(kai)引起(qi)停梯(ti)

像曳引繩(sheng)一(yi)樣(yang)，限(xian)速器繩(sheng)同樣(yang)會(hui)在使用過程中伸長(chang)。由于底坑(keng)漲繩(sheng)輪(lun)重錘的作用，漲繩(sheng)輪(lun)開(kai)關(guan)打板偏移，直(zhi)到斷(duan)開(kai)開(kai)關(guan)導致停梯(ti)。

對于電梯安裝的新裝電梯，電梯安裝人員(yuan)須每月(yue)檢查一次，運行一年(nian)以后，三個月(yue)檢查一次，如此即可防患于未然。由于廳門密封不嚴，井道(dao)有墻(qiang)洞等(deng)各(ge)種原因，老鼠竄入井道(dao)時有的(de)會(hui)摔死，有的(de)掉入底坑因想方設法逃出竄入繩輪(lun)而卡入其中，電梯(ti)向下運行導致a全鉗開(kai)關動作，有的(de)限速器開(kai)關也(ye)一起聯(lian)動。