變頻螺桿(gan)式(shi)冷水機(ji)(ji)運行前的(de)檢(jian)查(cha)(cha)項目，電(dian)(dian)源(yuan)及電(dian)(dian)控儀表系(xi)統的(de)檢(jian)查(cha)(cha)。開(kai)機(ji)(ji)前檢(jian)查(cha)(cha)配電(dian)(dian)容(rong)(rong)量(liang)是否(fou)(fou)與機(ji)(ji)組功(gong)率一致，選擇的(de)電(dian)(dian)纜線(xian)(xian)(xian)徑是否(fou)(fou)能承受(shou)主機(ji)(ji)的(de)大(da)工(gong)作電(dian)(dian)流。檢(jian)查(cha)(cha)電(dian)(dian)氣(qi)系(xi)統是否(fou)(fou)與機(ji)(ji)組一致。機(ji)(ji)組電(dian)(dian)氣(qi)系(xi)統為(wei)三(san)相五線(xian)(xian)(xian)制(zhi)（三(san)相線(xian)(xian)(xian)，一根(gen)零線(xian)(xian)(xian)，一根(gen)地線(xian)(xian)(xian)，380V±10%）。檢(jian)查(cha)(cha)壓(ya)縮(suo)機(ji)(ji)電(dian)(dian)源(yuan)線(xian)(xian)(xian)是否(fou)(fou)連(lian)接良好。如(ru)果松動(dong)，請重新擰(ning)緊。壓(ya)縮(suo)機(ji)(ji)接線(xian)(xian)(xian)處(chu)使用的(de)扭矩為(wei)500kg cm。由于主機(ji)(ji)的(de)長(chang)途運輸和吊(diao)裝，螺釘可能會松動(dong)。否(fou)(fou)則可能會損(sun)壞主機(ji)(ji)控制(zhi)柜和壓(ya)縮(suo)機(ji)(ji)內的(de)電(dian)(dian)氣(qi)元件（如(ru)空氣(qi)開(kai)關、交(jiao)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)，看(kan)接線(xian)(xian)(xian)是否(fou)(fou)正(zheng)確；用兆歐測(ce)量(liang)，確保外殼沒有短路(lu)(lu)；檢(jian)查(cha)(cha)接地線(xian)(xian)(xian)是否(fou)(fou)正(zheng)確安(an)裝，對地絕緣電(dian)(dian)阻是否(fou)(fou)大(da)于2MΩ；檢(jian)查(cha)(cha)電(dian)(dian)源(yuan)線(xian)(xian)(xian)是否(fou)(fou)滿(man)足容(rong)(rong)量(liang)要(yao)求。檢(jian)查(cha)(cha)是否(fou)(fou)在設備的(de)電(dian)(dian)源(yuan)線(xian)(xian)(xian)上安(an)裝了斷路(lu)(lu)器(qi)。

    控(kong)制柜(ju)(ju)內(nei)主電(dian)(dian)(dian)路(lu)的所有接(jie)線(xian)和(he)(he)控(kong)制電(dian)(dian)(dian)路(lu)的外部接(jie)線(xian)在通電(dian)(dian)(dian)前都應(ying)對照接(jie)線(xian)圖進(jin)行全(quan)面檢查(cha)（如(ru)曲軸箱油加熱器(qi)(qi)接(jie)線(xian)、壓縮機(ji)電(dian)(dian)(dian)子(zi)保護(hu)器(qi)(qi)、循(xun)環(huan)水溫(wen)度傳感器(qi)(qi)、目標流(liu)量開(kai)關(guan)、水泵聯合控(kong)制等）；檢查(cha)端子(zi)螺栓是否(fou)緊固(gu)無松動。檢查(cha)電(dian)(dian)(dian)控(kong)儀表(biao)、電(dian)(dian)(dian)器(qi)(qi)是否(fou)安裝(zhuang)正(zheng)(zheng)確(que)、完整(zheng)、有效，電(dian)(dian)(dian)控(kong)柜(ju)(ju)內(nei)外，特別是各點接(jie)線(xian)口(kou)是否(fou)清潔、無雜物(wu)。檢查(cha)以(yi)上各項后，當控(kong)制柜(ju)(ju)通電(dian)(dian)(dian)時(shi)，電(dian)(dian)(dian)源指示燈亮(liang)。這時(shi)，油加熱器(qi)(qi)開(kai)始工作。觀(guan)察相序保護(hu)器(qi)(qi)是否(fou)正(zheng)(zheng)常。如(ru)果相序保護(hu)器(qi)(qi)正(zheng)(zheng)常（綠燈亮(liang)），閉合控(kong)制柜(ju)(ju)內(nei)的單*開(kai)關(guan)（QF2），控(kong)制電(dian)(dian)(dian)路(lu)開(kai)始工作。觸(chu)摸屏（文字顯示）和(he)(he)PLC控(kong)制器(qi)(qi)全(quan)部投入運(yun)行。