屋頂風機的起動調試：

屋頂(ding)風(feng)機可用(yong)于建筑物屋頂(ding)的(de)(de)通(tong)(tong)(tong)風(feng)和(he)通(tong)(tong)(tong)風(feng)。本(ben)著室內熱氣(qi)流(liu)(liu)上升，冷空(kong)氣(qi)下降的(de)(de)天然(ran)原理，將其(qi)安(an)裝在屋頂(ding)上，以加快熱空(kong)氣(qi)的(de)(de)揮發(fa)，到(dao)達通(tong)(tong)(tong)風(feng)降溫(wen)的(de)(de)作用(yong)。適用(yong)于大型商(shang)業(ye)超(chao)市，農牧業(ye)，工業(ye)廠(chang)房(fang)，農業(ye)育種(zhong)廠(chang)和(he)元件廠(chang);它的(de)(de)特點：風(feng)機不需(xu)要消耗(hao)功(gong)率(lv)，僅通(tong)(tong)(tong)過氣(qi)流(liu)(liu)的(de)(de)功(gong)率(lv)就可以到(dao)達排風(feng)和(he)通(tong)(tong)(tong)風(feng)的(de)(de)意(yi)圖。這種(zhong)風(feng)機的(de)(de)是易于安(an)裝和(he)節能。

1. 風機答(da)應(ying)全(quan)壓(ya)起(qi)(qi)動(dong)(dong)或降壓(ya)起(qi)(qi)動(dong)(dong)，但應(ying)留(liu)意，全(quan)壓(ya)起(qi)(qi)動(dong)(dong)時的(de)電(dian)流(liu)為5~7倍的(de)額定電(dian)流(liu)，降壓(ya)起(qi)(qi)動(dong)(dong)轉距與電(dian)壓(ya)平方成正比(bi)，當電(dian)網容(rong)量不足時，應(ying)選用(yong)降壓(ya)起(qi)(qi)動(dong)(dong)。

2.試車(che)時人(ren)(ren)數不少(shao)于兩人(ren)(ren)，一人(ren)(ren)控(kong)制電(dian)源，一人(ren)(ren)調查(cha)風(feng)機(ji)工(gong)作狀況，發現(xian)(xian)異(yi)常現(xian)(xian)象(xiang)立(li)即(ji)停機(ji)查(cha)看；首先查(cha)看旋轉方向是否(fou)(fou)正(zheng)確；風(feng)機(ji)過(guo)程(cheng)中(zhong)，應查(cha)看各相工(gong)作電(dian)流是否(fou)(fou)平(ping)衡(heng)，電(dian)流是否(fou)(fou)超越額定(ding)電(dian)流；若有不正(zheng)常現(xian)(xian)象(xiang)，應中(zhong)止查(cha)看。工(gong)作五(wu)分鐘后，停機(ji)查(cha)看風(feng)機(ji)是否(fou)(fou)有異(yi)常現(xian)(xian)象(xiang)，承認無異(yi)常現(xian)(xian)象(xiang)再開(kai)機(ji)工(gong)作。

3.雙速(su)風(feng)機試車時，應先(xian)發(fa)動(dong)低速(su)，并(bing)查看(kan)旋轉方(fang)向是否正確；起(qi)動(dong)高速(su)時要待風(feng)機靜(jing)止后再起(qi)，以防高速(su)反向旋轉，引起(qi)開關跳閘及電機受損。

4.風機到達正(zheng)常(chang)運速(su)時，應(ying)檢(jian)測風機各(ge)相輸入電(dian)(dian)(dian)(dian)源是否正(zheng)常(chang)，風機的工作(zuo)電(dian)(dian)(dian)(dian)流不(bu)能超越其額定電(dian)(dian)(dian)(dian)流，若(ruo)工作(zuo)電(dian)(dian)(dian)(dian)流超越其額定電(dian)(dian)(dian)(dian)流，應(ying)查看供應(ying)風機的電(dian)(dian)(dian)(dian)壓(ya)是否正(zheng)常(chang)。

5.對(dui)離心風(feng)(feng)(feng)(feng)(feng)(feng)機(ji)和風(feng)(feng)(feng)(feng)(feng)(feng)機(ji)箱，所(suo)需(xu)電(dian)機(ji)功(gong)(gong)率是指在待定工(gong)況下，加上(shang)機(ji)械(xie)損失與應有的(de)儲備量而(er)(er)言，并非出(chu)風(feng)(feng)(feng)(feng)(feng)(feng)口(kou)全開時(shi)所(suo)需(xu)的(de)功(gong)(gong)率，如(ru)風(feng)(feng)(feng)(feng)(feng)(feng)機(ji)的(de)出(chu)風(feng)(feng)(feng)(feng)(feng)(feng)口(kou)不接管(guan)道或(huo)(huo)未加外界阻力(li)而(er)(er)進行空(kong)工(gong)作，則電(dian)機(ji)有焚(fen)毀(hui)的(de)風(feng)(feng)(feng)(feng)(feng)(feng)險(xian)，為了起見，應在風(feng)(feng)(feng)(feng)(feng)(feng)機(ji)的(de)出(chu)風(feng)(feng)(feng)(feng)(feng)(feng)口(kou)或(huo)(huo)入口(kou)管(guan)路(lu)加上(shang)閥門，起動風(feng)(feng)(feng)(feng)(feng)(feng)機(ji)時(shi)關閉(bi)，工(gong)作后將閥門漸漸敞開，到達規則工(gong)況為止，并留意風(feng)(feng)(feng)(feng)(feng)(feng)機(ji)電(dian)流是否(fou)超越規則值。