【電動三通(tong)調節(jie)閥】電動三通(tong)調節(jie)閥修理(li) 幾種常見故障及(ji)處理(li)方(fang)法(fa)

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電動三通調節閥具有動作靈敏，能源(yuan)取(qu)用(yong)方(fang)便(bian)(bian)，信(xin)號傳(chuan)輸方(fang)便(bian)(bian)，迅速和(he)傳(chuan)送距離遠等特點，因此被廣泛采用(yong)。在日常維修和(he)故障處理中總(zong)結以下幾點經驗(yan)，供需要的人們參考。

電動(dong)三通調(diao)節閥故障現象很多，現舉幾種常見(jian)現象及(ji)處理(li)方法：

1、電機不轉即閥不動作，分析如下：

(1)電機線圈燒壞。使用環境不良，進水致短路或電機轉子卡死不動，電(dian)機(ji)線圈(quan)發熱，燒壞。判(pan)斷方法只需用(yong)萬用(yong)表(biao)測電(dian)機(ji)引出正、反和零線之間(jian)的電(dian)阻，正常值(zhi)約為l6OΩ，如(ru)偏差過大或(huo)過小就證(zheng)明線圈(quan)已燒壞。

(2)分相電(dian)容(rong)失效或(huo)被擊穿(chuan)，分相電(dian)容(rong)壞(huai)了，電(dian)機也不會(hui)起動，用(yong)萬用(yong)表(biao)很容(rong)易檢查分相電(dian)容(rong)。

(3)兩個微(wei)動(dong)(dong)(dong)開(kai)(kai)關(guan)(guan)位(wei)(wei)置(zhi)不當。當調節閥動(dong)(dong)(dong)作時(shi)，行程至零點和滿(man)度(du)時(shi)，微(wei)動(dong)(dong)(dong)開(kai)(kai)關(guan)(guan)應關(guan)(guan)閉，使(shi)電(dian)(dian)流不致(zhi)流過(guo)(guo)電(dian)(dian)機(ji)，達到(dao)保護電(dian)(dian)機(ji)的目的，如微(wei)動(dong)(dong)(dong)開(kai)(kai)關(guan)(guan)過(guo)(guo)開(kai)(kai)，使(shi)閥桿動(dong)(dong)(dong)作已(yi)達到(dao)零點或(huo)滿(man)度(du)時(shi)，仍不能斷(duan)開(kai)(kai)微(wei)動(dong)(dong)(dong)開(kai)(kai)關(guan)(guan)，而電(dian)(dian)流繼續通過(guo)(guo)電(dian)(dian)機(ji)。而此(ci)時(shi)電(dian)(dian)機(ji)已(yi)無法(fa)轉動(dong)(dong)(dong)，將會(hui)使(shi)電(dian)(dian)機(ji)堵轉燒壞。處理方法(fa)是移動(dong)(dong)(dong)微(wei)動(dong)(dong)(dong)開(kai)(kai)關(guan)(guan)位(wei)(wei)置(zhi)，使(shi)之與閥桿行程位(wei)(wei)置(zhi)相適應。

2、電動閥一動作就融斷保險分析：

(1)電機線圈(quan)漆(qi)包線絕緣破壞(huai)，線圈(quan)繞(rao)組碰殼(ke)而短路。判斷方(fang)法(fa)可用北歐表測(ce)繞(rao)組對地電阻即可。

(2)分相(xiang)電(dian)(dian)(dian)(dian)容(rong)(rong)容(rong)(rong)量(liang)過大(da)(da)。有時分相(xiang)電(dian)(dian)(dian)(dian)容(rong)(rong)容(rong)(rong)量(liang)過大(da)(da)，起動電(dian)(dian)(dian)(dian)流(liu)大(da)(da)，會燒斷保(bao)險(xian)，判斷方法用(yong)交流(liu)電(dian)(dian)(dian)(dian)流(liu)測其電(dian)(dian)(dian)(dian)流(liu)值(zhi)來選擇(ze)。

3、一送電，調節閥就處于全開或全關位置。原因如下：

(1)反饋信(xin)號線及反饋線圈(quan)斷線。

(2)微(wei)機輸出(chu)控(kong)制線(xian)或(huo)電(dian)動操作器上控(kong)制線(xian)斷線(xian)。

(3)提供反饋線(xian)路(lu)的(de)電(dian)源有無。

以(yi)上(shang)原(yuan)因可用萬用表查出。若都正常，則(ze)檢查電壓(ya)一電流轉換電路(lu)。

4、閥穩不住：

原因(yin)為零點(dian)不對，殺車機構(gou)過松，或調(diao)穩(wen)電位(wei)器損壞(huai)。處理(li)方法(fa)為用萬(wan)用表檢查零點(dian)大小，調(diao)穩(wen)電位(wei)器阻(zu)值是否改變或損壞(huai)。檢查剎車機構(gou)松緊度。