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)(xiang)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)出(chu)現(xian)斷相(xiang)(xiang)時(shi)，相(xiang)(xiang)序繼電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)動(dong)作切斷a全回(hui)路(lu)，使(shi)電(dian)(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)(ti)(ti)停止(zhi)運(yun)行(xing)(xing)。這種故障(zhang)多出(chu)在繼電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)邏輯控制(zhi)(zhi)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)(ti)(ti)，因為是老(lao)式電(dian)(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)(ti)(ti)，電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)開(kai)關多為閘刀式，電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)經(jing)過j限開(kai)關，再送至(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)(ti)(ti)控制(zhi)(zhi)柜(ju)、電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)流(liu)經(jing)的(de)兩(liang)個開(kai)關，共六根保(bao)險(xian)絲(si)。電(dian)(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)(ti)(ti)運(yun)行(xing)(xing)、起動(dong)，電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)都(dou)很大。經(jing)過一段時(shi)間運(yun)行(xing)(xing)，如維保(bao)人員(yuan)不及(ji)時(shi)檢查，保(bao)險(xian)絲(si)與螺(luo)絲(si)連接(jie)處易燒(shao)斷，電(dian)(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)(ti)(ti)斷相(xiang)(xiang)，引起停梯(ti)(ti)(ti)(ti)，輕則關人，重(zhong)則發生事故。

主要預防措施：

①保養(yang)人員要經常巡視檢(jian)查，發現(xian)可(ke)疑之處，及時(shi)修理(li)，出現(xian)發燙、打火花諸類情形應立即更換。

②建議用(yong)戶將(jiang)閘(zha)刀(dao)開(kai)關更換為相當(dang)容量的(de)空(kong)氣開(kai)關。

③現(xian)在設(she)計的(de)電梯都沒有電源j限(xian)開(kai)關(guan)，筆者(zhe)認為，可以就a全(quan)(quan)回路略作改動，即加裝上、下(xia)j限(xian)電氣開(kai)關(guan)串聯在a全(quan)(quan)回路中，拆除原j限(xian)開(kai)關(guan)。

2、漲繩輪開(kai)關斷開(kai)引起停(ting)梯

像曳引繩(sheng)一(yi)樣，限速(su)器(qi)繩(sheng)同樣會在使用過程中伸長(chang)。由(you)于底坑(keng)漲(zhang)(zhang)繩(sheng)輪(lun)重錘的作用，漲(zhang)(zhang)繩(sheng)輪(lun)開(kai)關打板偏(pian)移(yi)，直到斷開(kai)開(kai)關導(dao)致停(ting)梯。

對于電梯安裝的新裝電梯，電梯安裝人(ren)員(yuan)須每月檢(jian)查(cha)一(yi)(yi)次，運(yun)行一(yi)(yi)年(nian)以后，三個月檢(jian)查(cha)一(yi)(yi)次，如此即可防患(huan)于未然。由于廳門密封不嚴，井道(dao)有墻洞等各種原因(yin)，老鼠竄入(ru)(ru)井道(dao)時有的會摔(shuai)死，有的掉入(ru)(ru)底坑因(yin)想方設(she)法逃(tao)出(chu)竄入(ru)(ru)繩輪(lun)而卡入(ru)(ru)其中(zhong)，電梯向下運(yun)行導致(zhi)a全鉗開(kai)關(guan)(guan)動作(zuo)，有的限速器開(kai)關(guan)(guan)也一(yi)(yi)起聯動。