運轉冷熱沖擊試驗箱該如何保養

冷(leng)熱沖(chong)擊(ji)試(shi)驗箱(xiang)(xiang)嚴(yan)禁(jin)測(ce)試(shi)易(yi)燃、易(yi)爆(bao)、易(yi)揮發及腐蝕性(xing)物品，否則將會引發事故造(zao)成機器損傷或者試(shi)驗結果失效。應(ying)盡(jin)量(liang)避免(mian)頻繁啟停冷(leng)熱沖(chong)擊(ji)試(shi)驗箱(xiang)(xiang)(冷(leng)熱沖(chong)擊(ji)試(shi)驗箱(xiang)(xiang)停止后五(wu)分鐘內盡(jin)量(liang)不要再次啟動運行)，以免(mian)增加制(zhi)冷(leng)系統壓縮機的機械(xie)負荷，影響機組的使(shi)用壽(shou)命。

　測試(shi)(shi)物(wu)放置量不可(ke)影(ying)響工(gong)作(zuo)室的氣(qi)流均(jun)衡和(he)通暢，否則會影(ying)響冷熱沖擊試(shi)(shi)驗箱性能以及試(shi)(shi)驗真實(shi)性。垂直于內循環氣(qi)流風向的任意截面上，測試(shi)(shi)物(wu)的面積(ji)總和(he)不應(ying)大于工(gong)作(zuo)室該方向截面積(ji)的1/3。

　　冷(leng)熱(re)沖擊試(shi)(shi)(shi)(shi)驗(yan)(yan)箱(xiang)(xiang)運行前(qian)試(shi)(shi)(shi)(shi)驗(yan)(yan)箱(xiang)(xiang)門(men)(men)(men)要(yao)關好、關嚴，否則(ze)會造成工(gong)作室氣體外泄，試(shi)(shi)(shi)(shi)驗(yan)(yan)達不(bu)到性(xing)能要(yao)求。應由人員操作冷(leng)熱(re)沖擊試(shi)(shi)(shi)(shi)驗(yan)(yan)箱(xiang)(xiang)，以(yi)免因為操作不(bu)規范造成不(bu)必要(yao)的(de)損傷(shang)。冷(leng)熱(re)沖擊試(shi)(shi)(shi)(shi)驗(yan)(yan)箱(xiang)(xiang)若運轉(zhuan)0℃以(yi)下(xia)低(di)溫(wen)條件試(shi)(shi)(shi)(shi)驗(yan)(yan)時(shi)，應盡(jin)量(liang)(liang)避免打開(kai)試(shi)(shi)(shi)(shi)驗(yan)(yan)箱(xiang)(xiang)門(men)(men)(men)，因為在運行低(di)溫(wen)試(shi)(shi)(shi)(shi)驗(yan)(yan)時(shi), 若開(kai)啟(qi)箱(xiang)(xiang)門(men)(men)(men)易造成制(zhi)冷(leng)系(xi)統(tong)蒸發器及其(qi)它部位(wei)出(chu)現霜(shuang)凍現象，尤其(qi)當試(shi)(shi)(shi)(shi)驗(yan)(yan)溫(wen)度越低(di)狀(zhuang)況(kuang)越嚴重，若必須打開(kai)箱(xiang)(xiang)門(men)(men)(men)，則(ze)應盡(jin)量(liang)(liang)縮短開(kai)門(men)(men)(men)時(shi)間。

　　當(dang)使用冷熱沖擊試(shi)驗(yan)(yan)箱完(wan)成低溫(wen)(wen)(wen)試(shi)驗(yan)(yan)運轉后(hou)，務(wu)必再設定試(shi)驗(yan)(yan)溫(wen)(wen)(wen)度(du)條(tiao)件為(wei)30℃施行干燥(zao)處理(li)約(yue)半個(ge)小(xiao)時后(hou)(回常溫(wen)(wen)(wen)，溫(wen)(wen)(wen)度(du)控(kong)制器可設置該自動功(gong)能)再停機(ji)開啟試(shi)驗(yan)(yan)箱門進(jin)行取放測試(shi)品(pin)等操作(zuo)，以免(mian)影響下一個(ge)作(zuo)業條(tiao)件的試(shi)驗(yan)(yan)性能。若未實(shi)施30℃之(zhi)干燥(zao)處理(li)，機(ji)器會發生(sheng)故障。