變頻螺桿式(shi)冷水機(ji)運(yun)行前的(de)檢(jian)查(cha)項(xiang)目(mu)，電(dian)(dian)(dian)(dian)源及(ji)電(dian)(dian)(dian)(dian)控儀表(biao)系(xi)統的(de)檢(jian)查(cha)。開機(ji)前檢(jian)查(cha)配電(dian)(dian)(dian)(dian)容量(liang)是(shi)(shi)(shi)(shi)否(fou)(fou)與機(ji)組功率一(yi)致，選擇的(de)電(dian)(dian)(dian)(dian)纜線(xian)(xian)(xian)徑是(shi)(shi)(shi)(shi)否(fou)(fou)能承受主(zhu)(zhu)機(ji)的(de)大工作電(dian)(dian)(dian)(dian)流(liu)。檢(jian)查(cha)電(dian)(dian)(dian)(dian)氣(qi)系(xi)統是(shi)(shi)(shi)(shi)否(fou)(fou)與機(ji)組一(yi)致。機(ji)組電(dian)(dian)(dian)(dian)氣(qi)系(xi)統為三相五線(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)查(cha)壓(ya)縮(suo)機(ji)電(dian)(dian)(dian)(dian)源線(xian)(xian)(xian)是(shi)(shi)(shi)(shi)否(fou)(fou)連(lian)接(jie)良(liang)好(hao)。如(ru)果(guo)松(song)動(dong)，請重新擰緊。壓(ya)縮(suo)機(ji)接(jie)線(xian)(xian)(xian)處使用(yong)的(de)扭矩(ju)為500kg cm。由于(yu)主(zhu)(zhu)機(ji)的(de)長途運(yun)輸和吊裝(zhuang)，螺釘可(ke)能會松(song)動(dong)。否(fou)(fou)則(ze)可(ke)能會損壞主(zhu)(zhu)機(ji)控制柜和壓(ya)縮(suo)機(ji)內(nei)的(de)電(dian)(dian)(dian)(dian)氣(qi)元件（如(ru)空(kong)氣(qi)開關、交流(liu)接(jie)觸(chu)器等）。用(yong)萬(wan)用(yong)表(biao)仔細檢(jian)查(cha)所有電(dian)(dian)(dian)(dian)路，看(kan)接(jie)線(xian)(xian)(xian)是(shi)(shi)(shi)(shi)否(fou)(fou)正確(que)；用(yong)兆歐(ou)測量(liang)，確(que)保外殼(ke)沒有短路；檢(jian)查(cha)接(jie)地(di)線(xian)(xian)(xian)是(shi)(shi)(shi)(shi)否(fou)(fou)正確(que)安裝(zhuang)，對地(di)絕緣(yuan)電(dian)(dian)(dian)(dian)阻是(shi)(shi)(shi)(shi)否(fou)(fou)大于(yu)2MΩ；檢(jian)查(cha)電(dian)(dian)(dian)(dian)源線(xian)(xian)(xian)是(shi)(shi)(shi)(shi)否(fou)(fou)滿足(zu)容量(liang)要求。檢(jian)查(cha)是(shi)(shi)(shi)(shi)否(fou)(fou)在設備的(de)電(dian)(dian)(dian)(dian)源線(xian)(xian)(xian)上(shang)安裝(zhuang)了斷路器。

    控(kong)(kong)制(zhi)(zhi)柜(ju)內主電(dian)(dian)(dian)(dian)路的所(suo)有接線(xian)和控(kong)(kong)制(zhi)(zhi)電(dian)(dian)(dian)(dian)路的外(wai)部接線(xian)在通電(dian)(dian)(dian)(dian)前都(dou)應對(dui)照接線(xian)圖進(jin)行(xing)全面檢(jian)查(cha)(cha)（如(ru)曲軸(zhou)箱油加(jia)熱器(qi)(qi)接線(xian)、壓(ya)縮機電(dian)(dian)(dian)(dian)子(zi)保(bao)護器(qi)(qi)、循環水(shui)溫度傳感器(qi)(qi)、目標流量開(kai)關、水(shui)泵聯合控(kong)(kong)制(zhi)(zhi)等(deng)）；檢(jian)查(cha)(cha)端(duan)子(zi)螺栓(shuan)是(shi)(shi)(shi)否(fou)緊固無松動(dong)。檢(jian)查(cha)(cha)電(dian)(dian)(dian)(dian)控(kong)(kong)儀(yi)表、電(dian)(dian)(dian)(dian)器(qi)(qi)是(shi)(shi)(shi)否(fou)安(an)裝正確(que)、完整、有效，電(dian)(dian)(dian)(dian)控(kong)(kong)柜(ju)內外(wai)，特別是(shi)(shi)(shi)各(ge)(ge)點接線(xian)口是(shi)(shi)(shi)否(fou)清(qing)潔、無雜物。檢(jian)查(cha)(cha)以上各(ge)(ge)項后，當控(kong)(kong)制(zhi)(zhi)柜(ju)通電(dian)(dian)(dian)(dian)時(shi)，電(dian)(dian)(dian)(dian)源指示燈亮。這時(shi)，油加(jia)熱器(qi)(qi)開(kai)始工作。觀察相序保(bao)護器(qi)(qi)是(shi)(shi)(shi)否(fou)正常。如(ru)果相序保(bao)護器(qi)(qi)正常（綠(lv)燈亮），閉合控(kong)(kong)制(zhi)(zhi)柜(ju)內的單*開(kai)關（QF2），控(kong)(kong)制(zhi)(zhi)電(dian)(dian)(dian)(dian)路開(kai)始工作。觸摸(mo)屏(ping)（文(wen)字顯(xian)示）和PLC控(kong)(kong)制(zhi)(zhi)器(qi)(qi)全部投入運行(xing)。