變頻螺桿式冷水機(ji)(ji)運行前的(de)檢(jian)查(cha)(cha)(cha)(cha)項目，電(dian)(dian)(dian)源(yuan)及電(dian)(dian)(dian)控儀表系統(tong)的(de)檢(jian)查(cha)(cha)(cha)(cha)。開機(ji)(ji)前檢(jian)查(cha)(cha)(cha)(cha)配電(dian)(dian)(dian)容(rong)量(liang)是(shi)(shi)(shi)否(fou)(fou)(fou)與機(ji)(ji)組功(gong)率一致(zhi)，選(xuan)擇的(de)電(dian)(dian)(dian)纜線(xian)徑(jing)是(shi)(shi)(shi)否(fou)(fou)(fou)能(neng)承受主(zhu)機(ji)(ji)的(de)大(da)工作(zuo)電(dian)(dian)(dian)流。檢(jian)查(cha)(cha)(cha)(cha)電(dian)(dian)(dian)氣系統(tong)是(shi)(shi)(shi)否(fou)(fou)(fou)與機(ji)(ji)組一致(zhi)。機(ji)(ji)組電(dian)(dian)(dian)氣系統(tong)為(wei)三相五線(xian)制(zhi)（三相線(xian)，一根(gen)零(ling)線(xian)，一根(gen)地線(xian)，380V±10%）。檢(jian)查(cha)(cha)(cha)(cha)壓(ya)縮(suo)機(ji)(ji)電(dian)(dian)(dian)源(yuan)線(xian)是(shi)(shi)(shi)否(fou)(fou)(fou)連接(jie)良好。如(ru)果(guo)松動，請重(zhong)新擰緊。壓(ya)縮(suo)機(ji)(ji)接(jie)線(xian)處(chu)使用(yong)(yong)的(de)扭矩為(wei)500kg cm。由(you)于(yu)主(zhu)機(ji)(ji)的(de)長(chang)途運輸(shu)和(he)吊裝(zhuang)，螺釘可(ke)能(neng)會松動。否(fou)(fou)(fou)則可(ke)能(neng)會損壞(huai)主(zhu)機(ji)(ji)控制(zhi)柜(ju)和(he)壓(ya)縮(suo)機(ji)(ji)內的(de)電(dian)(dian)(dian)氣元件（如(ru)空氣開關(guan)、交流接(jie)觸器等(deng)）。用(yong)(yong)萬用(yong)(yong)表仔細檢(jian)查(cha)(cha)(cha)(cha)所(suo)有電(dian)(dian)(dian)路，看(kan)接(jie)線(xian)是(shi)(shi)(shi)否(fou)(fou)(fou)正確；用(yong)(yong)兆歐測(ce)量(liang)，確保外(wai)殼沒有短路；檢(jian)查(cha)(cha)(cha)(cha)接(jie)地線(xian)是(shi)(shi)(shi)否(fou)(fou)(fou)正確安裝(zhuang)，對地絕(jue)緣電(dian)(dian)(dian)阻是(shi)(shi)(shi)否(fou)(fou)(fou)大(da)于(yu)2MΩ；檢(jian)查(cha)(cha)(cha)(cha)電(dian)(dian)(dian)源(yuan)線(xian)是(shi)(shi)(shi)否(fou)(fou)(fou)滿足容(rong)量(liang)要(yao)求。檢(jian)查(cha)(cha)(cha)(cha)是(shi)(shi)(shi)否(fou)(fou)(fou)在設備的(de)電(dian)(dian)(dian)源(yuan)線(xian)上安裝(zhuang)了(le)斷路器。

    控(kong)制(zhi)(zhi)柜(ju)內(nei)主電(dian)(dian)(dian)路(lu)的(de)所有(you)接線和(he)控(kong)制(zhi)(zhi)電(dian)(dian)(dian)路(lu)的(de)外部接線在通(tong)(tong)電(dian)(dian)(dian)前都應對(dui)照(zhao)接線圖進行全(quan)面檢查(cha)(cha)（如曲(qu)軸(zhou)箱(xiang)油加(jia)熱器接線、壓縮機電(dian)(dian)(dian)子保(bao)護(hu)器、循環水溫度傳感器、目標流(liu)量開(kai)關、水泵聯合控(kong)制(zhi)(zhi)等）；檢查(cha)(cha)端子螺栓是否(fou)緊固無(wu)松動。檢查(cha)(cha)電(dian)(dian)(dian)控(kong)儀表、電(dian)(dian)(dian)器是否(fou)安裝(zhuang)正確、完整、有(you)效，電(dian)(dian)(dian)控(kong)柜(ju)內(nei)外，特別是各點接線口(kou)是否(fou)清潔、無(wu)雜物。檢查(cha)(cha)以上各項后，當(dang)控(kong)制(zhi)(zhi)柜(ju)通(tong)(tong)電(dian)(dian)(dian)時，電(dian)(dian)(dian)源指示(shi)燈亮。這時，油加(jia)熱器開(kai)始(shi)工(gong)作(zuo)(zuo)。觀察相(xiang)序(xu)保(bao)護(hu)器是否(fou)正常。如果相(xiang)序(xu)保(bao)護(hu)器正常（綠燈亮），閉合控(kong)制(zhi)(zhi)柜(ju)內(nei)的(de)單(dan)*開(kai)關（QF2），控(kong)制(zhi)(zhi)電(dian)(dian)(dian)路(lu)開(kai)始(shi)工(gong)作(zuo)(zuo)。觸摸屏（文字顯示(shi)）和(he)PLC控(kong)制(zhi)(zhi)器全(quan)部投入運行。