變頻螺桿式冷(leng)水機(ji)(ji)(ji)(ji)運行前的(de)(de)檢(jian)查(cha)(cha)項目，電(dian)(dian)源(yuan)及電(dian)(dian)控(kong)儀(yi)表系(xi)統(tong)的(de)(de)檢(jian)查(cha)(cha)。開機(ji)(ji)(ji)(ji)前檢(jian)查(cha)(cha)配電(dian)(dian)容量是(shi)(shi)(shi)否(fou)(fou)(fou)與機(ji)(ji)(ji)(ji)組(zu)功率(lv)一(yi)致(zhi)，選擇的(de)(de)電(dian)(dian)纜線(xian)(xian)(xian)(xian)(xian)徑是(shi)(shi)(shi)否(fou)(fou)(fou)能承受主(zhu)機(ji)(ji)(ji)(ji)的(de)(de)大工作(zuo)電(dian)(dian)流。檢(jian)查(cha)(cha)電(dian)(dian)氣(qi)(qi)系(xi)統(tong)是(shi)(shi)(shi)否(fou)(fou)(fou)與機(ji)(ji)(ji)(ji)組(zu)一(yi)致(zhi)。機(ji)(ji)(ji)(ji)組(zu)電(dian)(dian)氣(qi)(qi)系(xi)統(tong)為(wei)三(san)相(xiang)五線(xian)(xian)(xian)(xian)(xian)制（三(san)相(xiang)線(xian)(xian)(xian)(xian)(xian)，一(yi)根零線(xian)(xian)(xian)(xian)(xian)，一(yi)根地線(xian)(xian)(xian)(xian)(xian)，380V±10%）。檢(jian)查(cha)(cha)壓(ya)縮機(ji)(ji)(ji)(ji)電(dian)(dian)源(yuan)線(xian)(xian)(xian)(xian)(xian)是(shi)(shi)(shi)否(fou)(fou)(fou)連接良好(hao)。如(ru)果松動，請重新擰緊。壓(ya)縮機(ji)(ji)(ji)(ji)接線(xian)(xian)(xian)(xian)(xian)處使用的(de)(de)扭矩為(wei)500kg cm。由于主(zhu)機(ji)(ji)(ji)(ji)的(de)(de)長(chang)途運輸和吊裝(zhuang)(zhuang)，螺釘可(ke)能會松動。否(fou)(fou)(fou)則可(ke)能會損壞主(zhu)機(ji)(ji)(ji)(ji)控(kong)制柜和壓(ya)縮機(ji)(ji)(ji)(ji)內的(de)(de)電(dian)(dian)氣(qi)(qi)元(yuan)件（如(ru)空氣(qi)(qi)開關、交(jiao)流接觸器(qi)等(deng)）。用萬用表仔細(xi)檢(jian)查(cha)(cha)所(suo)有電(dian)(dian)路，看(kan)接線(xian)(xian)(xian)(xian)(xian)是(shi)(shi)(shi)否(fou)(fou)(fou)正確；用兆歐測量，確保外(wai)殼(ke)沒(mei)有短(duan)路；檢(jian)查(cha)(cha)接地線(xian)(xian)(xian)(xian)(xian)是(shi)(shi)(shi)否(fou)(fou)(fou)正確安裝(zhuang)(zhuang)，對地絕緣(yuan)電(dian)(dian)阻是(shi)(shi)(shi)否(fou)(fou)(fou)大于2MΩ；檢(jian)查(cha)(cha)電(dian)(dian)源(yuan)線(xian)(xian)(xian)(xian)(xian)是(shi)(shi)(shi)否(fou)(fou)(fou)滿(man)足容量要求。檢(jian)查(cha)(cha)是(shi)(shi)(shi)否(fou)(fou)(fou)在設備的(de)(de)電(dian)(dian)源(yuan)線(xian)(xian)(xian)(xian)(xian)上安裝(zhuang)(zhuang)了斷路器(qi)。

    控(kong)制(zhi)柜(ju)內主(zhu)電(dian)(dian)(dian)路(lu)的(de)所有接(jie)(jie)線(xian)和(he)控(kong)制(zhi)電(dian)(dian)(dian)路(lu)的(de)外部(bu)接(jie)(jie)線(xian)在(zai)通電(dian)(dian)(dian)前都應對(dui)照接(jie)(jie)線(xian)圖進行(xing)(xing)全面(mian)檢(jian)(jian)(jian)查（如曲軸箱油加熱器接(jie)(jie)線(xian)、壓縮機(ji)電(dian)(dian)(dian)子保(bao)護器、循環水(shui)(shui)溫度傳(chuan)感(gan)器、目標流量開關(guan)、水(shui)(shui)泵聯合控(kong)制(zhi)等）；檢(jian)(jian)(jian)查端子螺栓是(shi)否(fou)(fou)緊固無松動。檢(jian)(jian)(jian)查電(dian)(dian)(dian)控(kong)儀表、電(dian)(dian)(dian)器是(shi)否(fou)(fou)安裝正確、完整、有效，電(dian)(dian)(dian)控(kong)柜(ju)內外，特別(bie)是(shi)各點接(jie)(jie)線(xian)口是(shi)否(fou)(fou)清潔、無雜(za)物(wu)。檢(jian)(jian)(jian)查以上各項后，當(dang)控(kong)制(zhi)柜(ju)通電(dian)(dian)(dian)時，電(dian)(dian)(dian)源指示燈亮。這時，油加熱器開始(shi)工作。觀察相序保(bao)護器是(shi)否(fou)(fou)正常。如果相序保(bao)護器正常（綠(lv)燈亮），閉(bi)合控(kong)制(zhi)柜(ju)內的(de)單*開關(guan)（QF2），控(kong)制(zhi)電(dian)(dian)(dian)路(lu)開始(shi)工作。觸摸屏（文字顯示）和(he)PLC控(kong)制(zhi)器全部(bu)投入運(yun)行(xing)(xing)。