電(dian)(dian)熱鼓(gu)風(feng)干(gan)燥箱又(you)名“烘箱”，采(cai)用電(dian)(dian)加熱方式進(jin)行(xing)鼓(gu)風(feng)循環干(gan)燥試驗，分為鼓(gu)風(feng)干(gan)燥和(he)真空干(gan)燥兩種，廣泛應(ying)用于化工，醫藥，鑄(zhu)造，汽車(che)，食品，機械等各(ge)個行(xing)。

電熱鼓風烘箱運行中會遇到很多的問題，下面是幾種問題的處理方法：
 

　　1、電(dian)(dian)(dian)熱鼓風(feng)烘(hong)箱(xiang)運行中繼電(dian)(dian)(dian)器(qi)(qi)觸點(dian)不(bu)能正(zheng)常吸(xi)合，發(fa)(fa)出(chu)連續(xu)“嗒(da)(da)嗒(da)(da)嗒(da)(da)”的(de)(de)(de)噪(zao)聲。出(chu)現這種現象(xiang)多(duo)數是電(dian)(dian)(dian)容(rong)器(qi)(qi)C 失(shi)(shi)效(漏電(dian)(dian)(dian)或(huo)(huo)擊(ji)穿)。原因是：電(dian)(dian)(dian)容(rong)器(qi)(qi)失(shi)(shi)效后(hou)即(ji)(ji)(ji)失(shi)(shi)去了(le)對電(dian)(dian)(dian)子管屏極電(dian)(dian)(dian)流(liu)(liu)的(de)(de)(de)濾波作(zuo)用(yong)，通(tong)過(guo)繼電(dian)(dian)(dian)器(qi)(qi)線圈(quan)的(de)(de)(de)電(dian)(dian)(dian)流(liu)(liu)不(bu)再是平滑(hua)的(de)(de)(de)脈動(dong)直(zhi)流(liu)(liu)電(dian)(dian)(dian)，而是一個時(shi)正(zheng)時(shi)負(fu)的(de)(de)(de)脈沖(chong)電(dian)(dian)(dian)流(liu)(liu)。即(ji)(ji)(ji)當變(bian)(bian)(bian)(bian)壓(ya)(ya)器(qi)(qi)次(ci)級輸出(chu)交流(liu)(liu)正(zheng)半(ban)周(zhou)時(shi)，繼電(dian)(dian)(dian)器(qi)(qi)線圈(quan)獲(huo)電(dian)(dian)(dian)使(shi)動(dong)觸點(dian)吸(xi)合；當變(bian)(bian)(bian)(bian)壓(ya)(ya)器(qi)(qi)次(ci)級輸出(chu)負(fu)半(ban)周(zhou)時(shi)，繼電(dian)(dian)(dian)器(qi)(qi)線圈(quan)斷電(dian)(dian)(dian)，銜鐵失(shi)(shi)磁，在彈簧(huang)的(de)(de)(de)作(zuo)用(yong)下，動(dong)觸點(dian)返回。待變(bian)(bian)(bian)(bian)壓(ya)(ya)器(qi)(qi)次(ci)級輸出(chu)交流(liu)(liu)第二個正(zheng)半(ban)周(zhou)時(shi)，繼電(dian)(dian)(dian)器(qi)(qi)線圈(quan)獲(huo)電(dian)(dian)(dian)又將動(dong)觸點(dian)吸(xi)合。變(bian)(bian)(bian)(bian)壓(ya)(ya)器(qi)(qi)次(ci)級電(dian)(dian)(dian)壓(ya)(ya)如此周(zhou)而復始的(de)(de)(de)變(bian)(bian)(bian)(bian)化，造成了(le)繼電(dian)(dian)(dian)器(qi)(qi)觸點(dian)不(bu)斷地吸(xi)合與釋放(fang)，發(fa)(fa)出(chu)連續(xu)“嗒(da)(da)嗒(da)(da)嗒(da)(da)”的(de)(de)(de)響聲。在檢修時(shi)應先查看電(dian)(dian)(dian)容(rong)器(qi)(qi)連線是否開路或(huo)(huo)脫(tuo)焊，然后(hou)拿一只同耐壓(ya)(ya)同容(rong)量(liang)的(de)(de)(de)電(dian)(dian)(dian)容(rong)器(qi)(qi)換上即(ji)(ji)(ji)可。此外，若(ruo)是新購進的(de)(de)(de)烘(hong)箱(xiang)或(huo)(huo)新換的(de)(de)(de)繼電(dian)(dian)(dian)器(qi)(qi)出(chu)現類似故障(zhang)，則可能是繼電(dian)(dian)(dian)器(qi)(qi)上的(de)(de)(de)彈簧(huang)拉力過(guo)緊，可適當放(fang)松調節螺(luo)栓解決(jue)。
 

　　2、電(dian)(dian)熱鼓風烘(hong)箱運行中烘(hong)箱升溫正(zheng)常(chang)，風扇(shan)不轉。烘(hong)箱升溫正(zheng)常(chang)，說明輸入市電(dian)(dian)正(zheng)常(chang)。風扇(shan)不轉，應從(cong)(cong)查(cha)(cha)(cha)找與(yu)電(dian)(dian)機(ji)有關的(de)(de)元(yuan)件及部位人手。首先檢查(cha)(cha)(cha)熔(rong)斷器(qi)RD 的(de)(de)熔(rong)絲(si)是(shi)(shi)否(fou)燒斷，連(lian)接(jie)導線是(shi)(shi)否(fou)開(kai)路；電(dian)(dian)容器(qi)C：電(dian)(dian)機(ji)各接(jie)線端是(shi)(shi)否(fou)松動(dong)或脫焊，然后將(jiang)電(dian)(dian)容器(qi)一端引線從(cong)(cong)電(dian)(dian)機(ji)的(de)(de)接(jie)線端取下(xia)(xia)，用萬用表檢查(cha)(cha)(cha)是(shi)(shi)否(fou)漏(lou)電(dian)(dian)或擊穿(chuan)。若經上述(shu)檢查(cha)(cha)(cha)，故障仍未排除，則可能是(shi)(shi)電(dian)(dian)機(ji)發生故障，拆下(xia)(xia)電(dian)(dian)機(ji)檢查(cha)(cha)(cha)修(xiu)理或更換。
 

　　熱風循環烘箱規格烘箱等干燥設備的注意事項與保養
 

　　1.使用(yong)前注意電(dian)壓(ya)是(shi)否(fou)正確(que)，僅適用(yong)機臺(tai)上(shang)所標示之電(dian)壓(ya)，避免電(dian)過量，而使電(dian)線走火。
 

　　2.電熱鼓(gu)風烘(hong)箱運行中請勿置(zhi)于潮濕(shi)之場所，以(yi)防漏(lou)電。
 

　　3.電熱鼓風烘箱運(yun)行(xing)中(zhong)使用過(guo)程(cheng)中(zhong)溫度變化時，請(qing)勿(wu)隨(sui)意打開機臺。
 

　　4.電熱鼓風烘箱運(yun)行(xing)中(zhong)當顯示溫(wen)(wen)度與(yu)實際溫(wen)(wen)度差(cha)異甚大(da)時，不可隨(sui)意調(diao)整(zheng)線路板之零件，應通知廠家(jia)派員(yuan)處理。
 

　　5.電(dian)熱鼓風(feng)烘箱運行(xing)中請勿直接用水沖洗，以防(fang)漏電(dian)。
 

　　6.電熱鼓(gu)風(feng)烘箱運行中(zhong)禁止(zhi)將酒(jiu)精等(deng)易燃易爆物(wu)質，具(ju)有(you)揮發性之(zhi)物(wu)品之(zhi)酸性物(wu)品在機(ji)臺內(nei)，防(fang)止(zhi)意外發生。
 

　　7.電熱鼓風(feng)烘箱運(yun)行中請勿(wu)在(zai)儀器附(fu)近使用可燃性物品(pin)，防止意(yi)外發(fa)生。
 

　　8.電熱鼓風烘箱運行中請小(xiao)心將(jiang)物品放入工作(zuo)室，不易(yi)過滿。