變頻螺(luo)桿式冷(leng)水機(ji)運(yun)行前的(de)(de)檢(jian)(jian)(jian)(jian)(jian)查項(xiang)目，電(dian)源及電(dian)控(kong)儀表系(xi)統(tong)(tong)的(de)(de)檢(jian)(jian)(jian)(jian)(jian)查。開機(ji)前檢(jian)(jian)(jian)(jian)(jian)查配電(dian)容量(liang)是(shi)否(fou)(fou)與機(ji)組(zu)功率一(yi)致，選(xuan)擇的(de)(de)電(dian)纜線(xian)(xian)(xian)徑是(shi)否(fou)(fou)能承受主機(ji)的(de)(de)大(da)工作電(dian)流。檢(jian)(jian)(jian)(jian)(jian)查電(dian)氣系(xi)統(tong)(tong)是(shi)否(fou)(fou)與機(ji)組(zu)一(yi)致。機(ji)組(zu)電(dian)氣系(xi)統(tong)(tong)為三相五線(xian)(xian)(xian)制（三相線(xian)(xian)(xian)，一(yi)根(gen)零線(xian)(xian)(xian)，一(yi)根(gen)地(di)線(xian)(xian)(xian)，380V±10%）。檢(jian)(jian)(jian)(jian)(jian)查壓(ya)縮機(ji)電(dian)源線(xian)(xian)(xian)是(shi)否(fou)(fou)連接(jie)(jie)良好。如(ru)果松動，請重(zhong)新(xin)擰(ning)緊。壓(ya)縮機(ji)接(jie)(jie)線(xian)(xian)(xian)處使(shi)用(yong)的(de)(de)扭(niu)矩為500kg cm。由于主機(ji)的(de)(de)長途運(yun)輸(shu)和吊裝(zhuang)，螺(luo)釘可能會松動。否(fou)(fou)則可能會損壞主機(ji)控(kong)制柜和壓(ya)縮機(ji)內的(de)(de)電(dian)氣元件（如(ru)空氣開關、交(jiao)流接(jie)(jie)觸器等）。用(yong)萬用(yong)表仔細(xi)檢(jian)(jian)(jian)(jian)(jian)查所有電(dian)路，看接(jie)(jie)線(xian)(xian)(xian)是(shi)否(fou)(fou)正確；用(yong)兆歐測量(liang)，確保外殼沒有短路；檢(jian)(jian)(jian)(jian)(jian)查接(jie)(jie)地(di)線(xian)(xian)(xian)是(shi)否(fou)(fou)正確安裝(zhuang)，對地(di)絕緣電(dian)阻是(shi)否(fou)(fou)大(da)于2MΩ；檢(jian)(jian)(jian)(jian)(jian)查電(dian)源線(xian)(xian)(xian)是(shi)否(fou)(fou)滿足容量(liang)要(yao)求。檢(jian)(jian)(jian)(jian)(jian)查是(shi)否(fou)(fou)在(zai)設備的(de)(de)電(dian)源線(xian)(xian)(xian)上安裝(zhuang)了斷路器。

    控(kong)制柜(ju)內主電(dian)路的所(suo)有(you)接(jie)線(xian)(xian)(xian)和(he)控(kong)制電(dian)路的外部接(jie)線(xian)(xian)(xian)在通電(dian)前(qian)都應(ying)對照接(jie)線(xian)(xian)(xian)圖進行全面檢查(cha)（如曲軸箱油加(jia)熱(re)器(qi)(qi)(qi)接(jie)線(xian)(xian)(xian)、壓縮機(ji)電(dian)子(zi)保護(hu)器(qi)(qi)(qi)、循環水溫(wen)度傳感器(qi)(qi)(qi)、目標流量開(kai)(kai)關、水泵聯合(he)控(kong)制等）；檢查(cha)端子(zi)螺(luo)栓是否(fou)(fou)緊(jin)固無(wu)松動(dong)。檢查(cha)電(dian)控(kong)儀表(biao)、電(dian)器(qi)(qi)(qi)是否(fou)(fou)安裝(zhuang)正確、完整、有(you)效，電(dian)控(kong)柜(ju)內外，特(te)別是各(ge)點接(jie)線(xian)(xian)(xian)口是否(fou)(fou)清潔(jie)、無(wu)雜物。檢查(cha)以上各(ge)項后(hou)，當控(kong)制柜(ju)通電(dian)時(shi)(shi)，電(dian)源指示(shi)燈(deng)亮。這時(shi)(shi)，油加(jia)熱(re)器(qi)(qi)(qi)開(kai)(kai)始工作。觀察(cha)相序保護(hu)器(qi)(qi)(qi)是否(fou)(fou)正常(chang)。如果(guo)相序保護(hu)器(qi)(qi)(qi)正常(chang)（綠燈(deng)亮），閉(bi)合(he)控(kong)制柜(ju)內的單*開(kai)(kai)關（QF2），控(kong)制電(dian)路開(kai)(kai)始工作。觸摸屏(ping)（文字顯(xian)示(shi)）和(he)PLC控(kong)制器(qi)(qi)(qi)全部投(tou)入運行。