變頻(pin)螺(luo)桿式冷水機(ji)(ji)(ji)(ji)運(yun)(yun)行前的(de)(de)(de)檢(jian)(jian)查項目，電(dian)(dian)(dian)(dian)(dian)源及電(dian)(dian)(dian)(dian)(dian)控儀表系(xi)統(tong)的(de)(de)(de)檢(jian)(jian)查。開機(ji)(ji)(ji)(ji)前檢(jian)(jian)查配電(dian)(dian)(dian)(dian)(dian)容量(liang)(liang)(liang)是(shi)否(fou)(fou)(fou)與機(ji)(ji)(ji)(ji)組(zu)功率一(yi)致，選擇的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)纜線(xian)徑(jing)是(shi)否(fou)(fou)(fou)能承(cheng)受主機(ji)(ji)(ji)(ji)的(de)(de)(de)大工作(zuo)電(dian)(dian)(dian)(dian)(dian)流(liu)。檢(jian)(jian)查電(dian)(dian)(dian)(dian)(dian)氣(qi)(qi)系(xi)統(tong)是(shi)否(fou)(fou)(fou)與機(ji)(ji)(ji)(ji)組(zu)一(yi)致。機(ji)(ji)(ji)(ji)組(zu)電(dian)(dian)(dian)(dian)(dian)氣(qi)(qi)系(xi)統(tong)為(wei)三相五線(xian)制(zhi)（三相線(xian)，一(yi)根(gen)零線(xian)，一(yi)根(gen)地(di)線(xian)，380V±10%）。檢(jian)(jian)查壓(ya)縮(suo)機(ji)(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)源線(xian)是(shi)否(fou)(fou)(fou)連(lian)接良好。如果松動，請(qing)重新擰緊。壓(ya)縮(suo)機(ji)(ji)(ji)(ji)接線(xian)處使用(yong)(yong)的(de)(de)(de)扭矩為(wei)500kg cm。由于主機(ji)(ji)(ji)(ji)的(de)(de)(de)長(chang)途運(yun)(yun)輸(shu)和(he)(he)吊裝，螺(luo)釘(ding)可(ke)能會(hui)松動。否(fou)(fou)(fou)則可(ke)能會(hui)損壞(huai)主機(ji)(ji)(ji)(ji)控制(zhi)柜和(he)(he)壓(ya)縮(suo)機(ji)(ji)(ji)(ji)內的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)氣(qi)(qi)元件（如空氣(qi)(qi)開關、交(jiao)流(liu)接觸(chu)器等）。用(yong)(yong)萬用(yong)(yong)表仔細檢(jian)(jian)查所有電(dian)(dian)(dian)(dian)(dian)路(lu)，看接線(xian)是(shi)否(fou)(fou)(fou)正(zheng)確(que)；用(yong)(yong)兆歐測量(liang)(liang)(liang)，確(que)保外殼(ke)沒(mei)有短路(lu)；檢(jian)(jian)查接地(di)線(xian)是(shi)否(fou)(fou)(fou)正(zheng)確(que)安(an)裝，對(dui)地(di)絕緣(yuan)電(dian)(dian)(dian)(dian)(dian)阻(zu)是(shi)否(fou)(fou)(fou)大于2MΩ；檢(jian)(jian)查電(dian)(dian)(dian)(dian)(dian)源線(xian)是(shi)否(fou)(fou)(fou)滿足容量(liang)(liang)(liang)要求。檢(jian)(jian)查是(shi)否(fou)(fou)(fou)在(zai)設(she)備的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)源線(xian)上安(an)裝了(le)斷路(lu)器。

    控(kong)(kong)制柜內(nei)主電(dian)(dian)路(lu)的所有(you)接(jie)線和(he)控(kong)(kong)制電(dian)(dian)路(lu)的外部接(jie)線在通電(dian)(dian)前都應對照接(jie)線圖進(jin)行(xing)全面檢查(cha)（如曲軸箱油(you)加(jia)熱器(qi)接(jie)線、壓(ya)縮(suo)機電(dian)(dian)子保(bao)護(hu)器(qi)、循(xun)環水溫度傳感器(qi)、目標(biao)流量開關、水泵聯合控(kong)(kong)制等）；檢查(cha)端(duan)子螺栓是(shi)否緊固無(wu)松動。檢查(cha)電(dian)(dian)控(kong)(kong)儀表(biao)、電(dian)(dian)器(qi)是(shi)否安裝(zhuang)正(zheng)確、完整、有(you)效，電(dian)(dian)控(kong)(kong)柜內(nei)外，特別(bie)是(shi)各(ge)點接(jie)線口是(shi)否清(qing)潔(jie)、無(wu)雜物。檢查(cha)以上各(ge)項后，當控(kong)(kong)制柜通電(dian)(dian)時，電(dian)(dian)源指示燈(deng)亮(liang)。這時，油(you)加(jia)熱器(qi)開始工作。觀察(cha)相序保(bao)護(hu)器(qi)是(shi)否正(zheng)常(chang)。如果相序保(bao)護(hu)器(qi)正(zheng)常(chang)（綠燈(deng)亮(liang)），閉(bi)合控(kong)(kong)制柜內(nei)的單(dan)*開關（QF2），控(kong)(kong)制電(dian)(dian)路(lu)開始工作。觸摸屏（文(wen)字(zi)顯示）和(he)PLC控(kong)(kong)制器(qi)全部投入運行(xing)。