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)(dian)源(yuan)出(chu)(chu)現斷相時(shi)，相序繼電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)動作(zuo)切斷a全回路，使(shi)電(dian)(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)停止運(yun)行。這種(zhong)故障多出(chu)(chu)在(zai)繼電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)邏輯控(kong)制的電(dian)(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)，因為(wei)是老(lao)式(shi)電(dian)(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)，電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)開關(guan)多為(wei)閘刀式(shi)，電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)經(jing)(jing)過j限開關(guan)，再送(song)至電(dian)(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)控(kong)制柜、電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)流經(jing)(jing)的兩個(ge)開關(guan)，共(gong)六(liu)根保(bao)險(xian)絲(si)。電(dian)(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)運(yun)行、起(qi)動，電(dian)(dian)(dian)(dian)(dian)(dian)流都很大。經(jing)(jing)過一段時(shi)間運(yun)行，如維保(bao)人員(yuan)不及時(shi)檢查(cha)，保(bao)險(xian)絲(si)與螺絲(si)連接處易燒斷，電(dian)(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)斷相，引(yin)起(qi)停梯(ti)(ti)，輕(qing)則(ze)關(guan)人，重則(ze)發生事故。

主要預防措施：

①保養(yang)人員(yuan)要經常巡視(shi)檢查，發現(xian)可疑之處，及時(shi)修理，出(chu)現(xian)發燙、打(da)火花諸類情(qing)形(xing)應(ying)立即更換。

②建(jian)議用戶將(jiang)閘(zha)刀開關(guan)更換(huan)為相當容量的空氣開關(guan)。

③現(xian)在設(she)計的電(dian)梯都沒有電(dian)源j限開關，筆者認為(wei)，可以就(jiu)a全(quan)(quan)回(hui)路略作改動，即加(jia)裝上、下j限電(dian)氣開關串聯在a全(quan)(quan)回(hui)路中，拆除(chu)原j限開關。

2、漲繩輪開關斷開引(yin)起停梯

像曳引(yin)繩(sheng)(sheng)一樣，限(xian)速器繩(sheng)(sheng)同樣會在使用(yong)過程中伸長。由于底坑漲繩(sheng)(sheng)輪重錘(chui)的作(zuo)用(yong)，漲繩(sheng)(sheng)輪開(kai)關打板偏移，直到斷(duan)開(kai)開(kai)關導致停梯(ti)。

對于電梯安裝的新裝電梯，電梯安裝人員(yuan)須每(mei)月檢查一(yi)次，運行(xing)一(yi)年(nian)以后，三個月檢查一(yi)次，如此(ci)即可(ke)防患于(yu)(yu)未然。由于(yu)(yu)廳門密封不嚴，井道有墻洞等(deng)各種原因(yin)，老鼠(shu)竄(cuan)入(ru)(ru)井道時有的會摔死(si)，有的掉入(ru)(ru)底坑因(yin)想方設法逃(tao)出竄(cuan)入(ru)(ru)繩輪(lun)而卡(ka)入(ru)(ru)其中，電梯(ti)向下運行(xing)導致a全鉗(qian)開關動作，有的限(xian)速器開關也一(yi)起聯動。