變頻螺桿(gan)式冷水(shui)機運行(xing)前的(de)檢(jian)查(cha)(cha)項目(mu)，電(dian)(dian)源(yuan)(yuan)及(ji)電(dian)(dian)控儀表(biao)系統的(de)檢(jian)查(cha)(cha)。開機前檢(jian)查(cha)(cha)配電(dian)(dian)容(rong)量(liang)是(shi)(shi)否(fou)(fou)與機組功率一致，選擇的(de)電(dian)(dian)纜線(xian)(xian)(xian)徑是(shi)(shi)否(fou)(fou)能(neng)承(cheng)受主(zhu)機的(de)大(da)工(gong)作電(dian)(dian)流。檢(jian)查(cha)(cha)電(dian)(dian)氣系統是(shi)(shi)否(fou)(fou)與機組一致。機組電(dian)(dian)氣系統為三(san)相五線(xian)(xian)(xian)制（三(san)相線(xian)(xian)(xian)，一根零線(xian)(xian)(xian)，一根地(di)(di)線(xian)(xian)(xian)，380V±10%）。檢(jian)查(cha)(cha)壓縮(suo)機電(dian)(dian)源(yuan)(yuan)線(xian)(xian)(xian)是(shi)(shi)否(fou)(fou)連接(jie)(jie)良好。如果(guo)松動(dong)，請重(zhong)新擰緊。壓縮(suo)機接(jie)(jie)線(xian)(xian)(xian)處(chu)使用的(de)扭矩為500kg cm。由于(yu)主(zhu)機的(de)長途運輸和吊(diao)裝，螺釘可(ke)能(neng)會(hui)松動(dong)。否(fou)(fou)則可(ke)能(neng)會(hui)損壞主(zhu)機控制柜和壓縮(suo)機內(nei)的(de)電(dian)(dian)氣元件（如空氣開關、交流接(jie)(jie)觸器等）。用萬(wan)用表(biao)仔細檢(jian)查(cha)(cha)所有電(dian)(dian)路(lu)，看接(jie)(jie)線(xian)(xian)(xian)是(shi)(shi)否(fou)(fou)正(zheng)(zheng)確(que)(que)；用兆歐測量(liang)，確(que)(que)保外殼沒(mei)有短路(lu)；檢(jian)查(cha)(cha)接(jie)(jie)地(di)(di)線(xian)(xian)(xian)是(shi)(shi)否(fou)(fou)正(zheng)(zheng)確(que)(que)安裝，對地(di)(di)絕緣電(dian)(dian)阻是(shi)(shi)否(fou)(fou)大(da)于(yu)2MΩ；檢(jian)查(cha)(cha)電(dian)(dian)源(yuan)(yuan)線(xian)(xian)(xian)是(shi)(shi)否(fou)(fou)滿足容(rong)量(liang)要求。檢(jian)查(cha)(cha)是(shi)(shi)否(fou)(fou)在設備的(de)電(dian)(dian)源(yuan)(yuan)線(xian)(xian)(xian)上安裝了斷路(lu)器。

    控(kong)制(zhi)(zhi)柜內主(zhu)電(dian)(dian)路(lu)的(de)(de)所有(you)接線和(he)控(kong)制(zhi)(zhi)電(dian)(dian)路(lu)的(de)(de)外部(bu)接線在通(tong)電(dian)(dian)前都應對照接線圖進行(xing)全面(mian)檢查（如(ru)曲軸箱(xiang)油加熱器接線、壓縮機電(dian)(dian)子保護器、循環水(shui)溫度傳感器、目標流量開(kai)關、水(shui)泵聯合控(kong)制(zhi)(zhi)等(deng)）；檢查端子螺栓是(shi)否緊固(gu)無松(song)動。檢查電(dian)(dian)控(kong)儀表、電(dian)(dian)器是(shi)否安裝正(zheng)(zheng)確、完(wan)整、有(you)效，電(dian)(dian)控(kong)柜內外，特別(bie)是(shi)各(ge)點接線口是(shi)否清(qing)潔、無雜物(wu)。檢查以上各(ge)項(xiang)后，當控(kong)制(zhi)(zhi)柜通(tong)電(dian)(dian)時(shi)，電(dian)(dian)源指示燈亮(liang)。這時(shi)，油加熱器開(kai)始(shi)工(gong)作(zuo)。觀(guan)察相序保護器是(shi)否正(zheng)(zheng)常(chang)。如(ru)果相序保護器正(zheng)(zheng)常(chang)（綠(lv)燈亮(liang)），閉合控(kong)制(zhi)(zhi)柜內的(de)(de)單*開(kai)關（QF2），控(kong)制(zhi)(zhi)電(dian)(dian)路(lu)開(kai)始(shi)工(gong)作(zuo)。觸(chu)摸屏（文字顯示）和(he)PLC控(kong)制(zhi)(zhi)器全部(bu)投(tou)入(ru)運行(xing)。