變頻(pin)螺桿式冷水機(ji)(ji)運行(xing)前的(de)檢(jian)查(cha)(cha)(cha)(cha)項目，電(dian)(dian)源及(ji)電(dian)(dian)控(kong)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)容(rong)量(liang)是(shi)(shi)否(fou)與(yu)機(ji)(ji)組功率一(yi)(yi)致，選擇的(de)電(dian)(dian)纜線(xian)(xian)徑是(shi)(shi)否(fou)能(neng)承(cheng)受(shou)主(zhu)機(ji)(ji)的(de)大(da)工作電(dian)(dian)流(liu)。檢(jian)查(cha)(cha)(cha)(cha)電(dian)(dian)氣系統(tong)是(shi)(shi)否(fou)與(yu)機(ji)(ji)組一(yi)(yi)致。機(ji)(ji)組電(dian)(dian)氣系統(tong)為(wei)三相(xiang)五線(xian)(xian)制(zhi)（三相(xiang)線(xian)(xian)，一(yi)(yi)根零(ling)線(xian)(xian)，一(yi)(yi)根地(di)(di)線(xian)(xian)，380V±10%）。檢(jian)查(cha)(cha)(cha)(cha)壓縮(suo)(suo)機(ji)(ji)電(dian)(dian)源線(xian)(xian)是(shi)(shi)否(fou)連接(jie)良好。如果(guo)松動，請重新擰緊。壓縮(suo)(suo)機(ji)(ji)接(jie)線(xian)(xian)處使用(yong)的(de)扭(niu)矩為(wei)500kg cm。由(you)于(yu)主(zhu)機(ji)(ji)的(de)長途運輸和(he)吊裝，螺釘可能(neng)會松動。否(fou)則(ze)可能(neng)會損(sun)壞(huai)主(zhu)機(ji)(ji)控(kong)制(zhi)柜(ju)和(he)壓縮(suo)(suo)機(ji)(ji)內(nei)的(de)電(dian)(dian)氣元件（如空氣開關、交流(liu)接(jie)觸器(qi)(qi)等(deng)）。用(yong)萬用(yong)表仔細檢(jian)查(cha)(cha)(cha)(cha)所有電(dian)(dian)路(lu)，看(kan)接(jie)線(xian)(xian)是(shi)(shi)否(fou)正確；用(yong)兆(zhao)歐測量(liang)，確保外殼(ke)沒有短路(lu)；檢(jian)查(cha)(cha)(cha)(cha)接(jie)地(di)(di)線(xian)(xian)是(shi)(shi)否(fou)正確安裝，對(dui)地(di)(di)絕緣電(dian)(dian)阻是(shi)(shi)否(fou)大(da)于(yu)2MΩ；檢(jian)查(cha)(cha)(cha)(cha)電(dian)(dian)源線(xian)(xian)是(shi)(shi)否(fou)滿足(zu)容(rong)量(liang)要求。檢(jian)查(cha)(cha)(cha)(cha)是(shi)(shi)否(fou)在(zai)設備(bei)的(de)電(dian)(dian)源線(xian)(xian)上安裝了(le)斷路(lu)器(qi)(qi)。

    控(kong)(kong)制柜內主電(dian)(dian)(dian)路(lu)的所(suo)有(you)接(jie)線(xian)和(he)控(kong)(kong)制電(dian)(dian)(dian)路(lu)的外部(bu)接(jie)線(xian)在通(tong)電(dian)(dian)(dian)前(qian)都應(ying)對照接(jie)線(xian)圖進行全(quan)面檢(jian)查(cha)（如(ru)曲軸箱油(you)加(jia)熱(re)器(qi)接(jie)線(xian)、壓(ya)縮機電(dian)(dian)(dian)子保(bao)(bao)護器(qi)、循(xun)環水(shui)溫度傳感器(qi)、目標流量開關、水(shui)泵聯合控(kong)(kong)制等）；檢(jian)查(cha)端子螺栓是否(fou)緊(jin)固無松動。檢(jian)查(cha)電(dian)(dian)(dian)控(kong)(kong)儀表、電(dian)(dian)(dian)器(qi)是否(fou)安(an)裝(zhuang)正(zheng)確、完(wan)整、有(you)效，電(dian)(dian)(dian)控(kong)(kong)柜內外，特別(bie)是各點接(jie)線(xian)口是否(fou)清潔、無雜(za)物。檢(jian)查(cha)以上各項后，當控(kong)(kong)制柜通(tong)電(dian)(dian)(dian)時，電(dian)(dian)(dian)源指示燈亮(liang)(liang)。這時，油(you)加(jia)熱(re)器(qi)開始工作。觀察(cha)相序保(bao)(bao)護器(qi)是否(fou)正(zheng)常。如(ru)果相序保(bao)(bao)護器(qi)正(zheng)常（綠燈亮(liang)(liang)），閉(bi)合控(kong)(kong)制柜內的單*開關（QF2），控(kong)(kong)制電(dian)(dian)(dian)路(lu)開始工作。觸摸屏（文字顯(xian)示）和(he)PLC控(kong)(kong)制器(qi)全(quan)部(bu)投入(ru)運(yun)行。