變頻螺桿(gan)式(shi)冷水(shui)機(ji)(ji)運行(xing)前的(de)檢(jian)查(cha)(cha)項目，電(dian)(dian)源及(ji)電(dian)(dian)控儀表系統(tong)(tong)(tong)的(de)檢(jian)查(cha)(cha)。開機(ji)(ji)前檢(jian)查(cha)(cha)配電(dian)(dian)容量是(shi)(shi)否(fou)(fou)與(yu)機(ji)(ji)組功率一(yi)致，選擇的(de)電(dian)(dian)纜線(xian)(xian)徑是(shi)(shi)否(fou)(fou)能(neng)承受主(zhu)機(ji)(ji)的(de)大工(gong)作(zuo)電(dian)(dian)流。檢(jian)查(cha)(cha)電(dian)(dian)氣(qi)系統(tong)(tong)(tong)是(shi)(shi)否(fou)(fou)與(yu)機(ji)(ji)組一(yi)致。機(ji)(ji)組電(dian)(dian)氣(qi)系統(tong)(tong)(tong)為(wei)三相五(wu)線(xian)(xian)制(zhi)（三相線(xian)(xian)，一(yi)根零(ling)線(xian)(xian)，一(yi)根地線(xian)(xian)，380V±10%）。檢(jian)查(cha)(cha)壓縮機(ji)(ji)電(dian)(dian)源線(xian)(xian)是(shi)(shi)否(fou)(fou)連接良好。如果(guo)松(song)動，請重新擰緊。壓縮機(ji)(ji)接線(xian)(xian)處使用的(de)扭矩為(wei)500kg cm。由于主(zhu)機(ji)(ji)的(de)長途(tu)運輸(shu)和吊裝(zhuang)(zhuang)，螺釘(ding)可(ke)能(neng)會(hui)松(song)動。否(fou)(fou)則可(ke)能(neng)會(hui)損壞主(zhu)機(ji)(ji)控制(zhi)柜和壓縮機(ji)(ji)內的(de)電(dian)(dian)氣(qi)元(yuan)件（如空氣(qi)開關、交流接觸器(qi)等）。用萬用表仔細檢(jian)查(cha)(cha)所有電(dian)(dian)路(lu)(lu)(lu)，看接線(xian)(xian)是(shi)(shi)否(fou)(fou)正確(que)；用兆歐測量，確(que)保外(wai)殼沒(mei)有短(duan)路(lu)(lu)(lu)；檢(jian)查(cha)(cha)接地線(xian)(xian)是(shi)(shi)否(fou)(fou)正確(que)安裝(zhuang)(zhuang)，對地絕(jue)緣電(dian)(dian)阻(zu)是(shi)(shi)否(fou)(fou)大于2MΩ；檢(jian)查(cha)(cha)電(dian)(dian)源線(xian)(xian)是(shi)(shi)否(fou)(fou)滿足容量要求。檢(jian)查(cha)(cha)是(shi)(shi)否(fou)(fou)在設備的(de)電(dian)(dian)源線(xian)(xian)上安裝(zhuang)(zhuang)了斷路(lu)(lu)(lu)器(qi)。

    控(kong)(kong)制(zhi)(zhi)(zhi)柜(ju)(ju)內(nei)主(zhu)電(dian)路的所有接(jie)線(xian)和(he)控(kong)(kong)制(zhi)(zhi)(zhi)電(dian)路的外部接(jie)線(xian)在(zai)通(tong)電(dian)前都應對照接(jie)線(xian)圖進行(xing)全面(mian)檢查(cha)（如曲軸(zhou)箱油加熱(re)器接(jie)線(xian)、壓縮(suo)機電(dian)子保(bao)護器、循(xun)環水溫度傳感器、目標(biao)流量開(kai)(kai)關(guan)、水泵聯合控(kong)(kong)制(zhi)(zhi)(zhi)等）；檢查(cha)端子螺栓是(shi)否緊固無(wu)松動。檢查(cha)電(dian)控(kong)(kong)儀表、電(dian)器是(shi)否安(an)裝正(zheng)確、完整、有效，電(dian)控(kong)(kong)柜(ju)(ju)內(nei)外，特別是(shi)各點接(jie)線(xian)口是(shi)否清潔、無(wu)雜物。檢查(cha)以(yi)上各項后，當控(kong)(kong)制(zhi)(zhi)(zhi)柜(ju)(ju)通(tong)電(dian)時，電(dian)源指示燈(deng)亮(liang)。這時，油加熱(re)器開(kai)(kai)始工作(zuo)。觀(guan)察(cha)相序保(bao)護器是(shi)否正(zheng)常。如果相序保(bao)護器正(zheng)常（綠燈(deng)亮(liang)），閉(bi)合控(kong)(kong)制(zhi)(zhi)(zhi)柜(ju)(ju)內(nei)的單*開(kai)(kai)關(guan)（QF2），控(kong)(kong)制(zhi)(zhi)(zhi)電(dian)路開(kai)(kai)始工作(zuo)。觸摸屏（文(wen)字顯(xian)示）和(he)PLC控(kong)(kong)制(zhi)(zhi)(zhi)器全部投入(ru)運行(xing)。