變(bian)頻螺桿式冷水機(ji)(ji)運行(xing)前的(de)(de)檢(jian)(jian)(jian)(jian)查(cha)(cha)項目，電(dian)(dian)(dian)(dian)(dian)源(yuan)及電(dian)(dian)(dian)(dian)(dian)控儀表(biao)(biao)系(xi)統的(de)(de)檢(jian)(jian)(jian)(jian)查(cha)(cha)。開(kai)機(ji)(ji)前檢(jian)(jian)(jian)(jian)查(cha)(cha)配電(dian)(dian)(dian)(dian)(dian)容量是(shi)否與(yu)機(ji)(ji)組功率一(yi)致，選(xuan)擇(ze)的(de)(de)電(dian)(dian)(dian)(dian)(dian)纜(lan)線(xian)(xian)徑是(shi)否能(neng)承受主機(ji)(ji)的(de)(de)大工作(zuo)電(dian)(dian)(dian)(dian)(dian)流(liu)。檢(jian)(jian)(jian)(jian)查(cha)(cha)電(dian)(dian)(dian)(dian)(dian)氣(qi)系(xi)統是(shi)否與(yu)機(ji)(ji)組一(yi)致。機(ji)(ji)組電(dian)(dian)(dian)(dian)(dian)氣(qi)系(xi)統為三相五線(xian)(xian)制(zhi)（三相線(xian)(xian)，一(yi)根零(ling)線(xian)(xian)，一(yi)根地(di)線(xian)(xian)，380V±10%）。檢(jian)(jian)(jian)(jian)查(cha)(cha)壓(ya)(ya)縮(suo)機(ji)(ji)電(dian)(dian)(dian)(dian)(dian)源(yuan)線(xian)(xian)是(shi)否連(lian)接(jie)良好。如果松(song)動，請重(zhong)新擰緊。壓(ya)(ya)縮(suo)機(ji)(ji)接(jie)線(xian)(xian)處使用的(de)(de)扭(niu)矩為500kg cm。由(you)于主機(ji)(ji)的(de)(de)長途(tu)運輸和吊裝，螺釘可(ke)能(neng)會松(song)動。否則可(ke)能(neng)會損壞主機(ji)(ji)控制(zhi)柜和壓(ya)(ya)縮(suo)機(ji)(ji)內的(de)(de)電(dian)(dian)(dian)(dian)(dian)氣(qi)元件（如空(kong)氣(qi)開(kai)關、交流(liu)接(jie)觸器等）。用萬用表(biao)(biao)仔細(xi)檢(jian)(jian)(jian)(jian)查(cha)(cha)所有(you)電(dian)(dian)(dian)(dian)(dian)路(lu)，看接(jie)線(xian)(xian)是(shi)否正確(que)(que)；用兆(zhao)歐測量，確(que)(que)保外(wai)殼沒有(you)短路(lu)；檢(jian)(jian)(jian)(jian)查(cha)(cha)接(jie)地(di)線(xian)(xian)是(shi)否正確(que)(que)安裝，對地(di)絕緣(yuan)電(dian)(dian)(dian)(dian)(dian)阻是(shi)否大于2MΩ；檢(jian)(jian)(jian)(jian)查(cha)(cha)電(dian)(dian)(dian)(dian)(dian)源(yuan)線(xian)(xian)是(shi)否滿(man)足容量要(yao)求(qiu)。檢(jian)(jian)(jian)(jian)查(cha)(cha)是(shi)否在設備的(de)(de)電(dian)(dian)(dian)(dian)(dian)源(yuan)線(xian)(xian)上安裝了斷路(lu)器。

    控(kong)制柜(ju)內(nei)主(zhu)電(dian)(dian)路的所有接線(xian)(xian)和控(kong)制電(dian)(dian)路的外(wai)部(bu)接線(xian)(xian)在通電(dian)(dian)前都(dou)應對照接線(xian)(xian)圖(tu)進行全面檢查(cha)（如曲軸箱油(you)加熱器(qi)(qi)接線(xian)(xian)、壓縮機(ji)電(dian)(dian)子保護器(qi)(qi)、循(xun)環水溫度傳感器(qi)(qi)、目標(biao)流量開(kai)關、水泵聯(lian)合(he)控(kong)制等）；檢查(cha)端子螺(luo)栓是(shi)否緊(jin)固無(wu)(wu)松(song)動。檢查(cha)電(dian)(dian)控(kong)儀(yi)表、電(dian)(dian)器(qi)(qi)是(shi)否安裝正確、完整、有效，電(dian)(dian)控(kong)柜(ju)內(nei)外(wai)，特別是(shi)各點接線(xian)(xian)口是(shi)否清潔、無(wu)(wu)雜物。檢查(cha)以上各項后，當控(kong)制柜(ju)通電(dian)(dian)時，電(dian)(dian)源(yuan)指示(shi)燈亮。這時，油(you)加熱器(qi)(qi)開(kai)始(shi)工作(zuo)。觀察相(xiang)序(xu)(xu)保護器(qi)(qi)是(shi)否正常。如果相(xiang)序(xu)(xu)保護器(qi)(qi)正常（綠燈亮），閉合(he)控(kong)制柜(ju)內(nei)的單*開(kai)關（QF2），控(kong)制電(dian)(dian)路開(kai)始(shi)工作(zuo)。觸摸屏（文字顯示(shi)）和PLC控(kong)制器(qi)(qi)全部(bu)投入運行。