一、恒溫恒濕機有哪些常見故障
恒溫恒濕機常見故障如下:
1、在高溫(wen)(wen)試驗(yan)中,恒(heng)溫(wen)(wen)恒(heng)濕機的(de)溫(wen)(wen)度(du)達不到試驗(yan)設(she)定溫(wen)(wen)度(du)值(zhi)時(shi),檢查(cha)電(dian)(dian)(dian)路控制(zhi)系統、加熱(re)系統,逐一排除故(gu)障(zhang)。溫(wen)(wen)度(du)升得很慢(man),要(yao)檢查(cha)風循(xun)環電(dian)(dian)(dian)機、風循(xun)環的(de)調節擋板。溫(wen)(wen)度(du)過沖厲害,需(xu)要(yao)重新自整定PID參數,但一般(ban)自整定時(shi)間較長,可(ke)根據廠家提供的(de)經驗(yan)PID值(zhi)設(she)定。溫(wen)(wen)度(du)直接上升,不受控制(zhi),說明控制(zhi)電(dian)(dian)(dian)路出故(gu)障(zhang),須更(geng)換控制(zhi)儀表(biao)或固態繼電(dian)(dian)(dian)器(SSR)等。
2、低溫(wen)達不(bu)到設定溫(wen)度(du)值時,觀(guan)察溫(wen)度(du)變化(hua)后(hou)再作判斷。如(ru)(ru)果(guo)恒(heng)溫(wen)恒(heng)濕機(ji)的(de)(de)溫(wen)度(du)降得很慢,就(jiu)(jiu)要先將室內烘干,使其(qi)完(wan)全干燥后(hou)再繼續;如(ru)(ru)果(guo)溫(wen)度(du)降到一定值后(hou)有回升的(de)(de)趨勢(shi),就(jiu)(jiu)要考(kao)慮(lv)恒(heng)溫(wen)恒(heng)濕機(ji)的(de)(de)使用環境溫(wen)度(du)是(shi)否(fou)(fou)過高、放(fang)置的(de)(de)位(wei)置是(shi)否(fou)(fou)太過靠墻等。在排除上述原因后(hou),就(jiu)(jiu)要考(kao)慮(lv)是(shi)否(fou)(fou)是(shi)制冷系統中(zhong)的(de)(de)故障,冷媒(mei)不(bu)夠就(jiu)(jiu)要加對應型號的(de)(de)冷媒(mei),如(ru)(ru)果(guo)是(shi)轉子泵等問題,則要請(qing)廠家的(de)(de)專業人員進行(xing)檢修。
3、在做濕(shi)(shi)熱試驗(yan)時,出(chu)現(xian)濕(shi)(shi)度顯(xian)示值長期(qi)達到(dao)100%RH,但實測卻是(shi)(shi)非常(chang)低(di)的(de)(de)(de)相對(dui)濕(shi)(shi)度時,可(ke)能是(shi)(shi)濕(shi)(shi)球(qiu)(qiu)傳感(gan)器(qi)(qi)上(shang)的(de)(de)(de)紗(sha)布(bu)(bu)干燥引起。要檢查濕(shi)(shi)球(qiu)(qiu)傳感(gan)器(qi)(qi)的(de)(de)(de)水(shui)(shui)槽中是(shi)(shi)否缺水(shui)(shui),水(shui)(shui)槽中的(de)(de)(de)水(shui)(shui)位(wei)(wei)是(shi)(shi)由(you)水(shui)(shui)位(wei)(wei)控(kong)(kong)(kong)制器(qi)(qi)自動(dong)控(kong)(kong)(kong)制的(de)(de)(de),查水(shui)(shui)位(wei)(wei)控(kong)(kong)(kong)制器(qi)(qi)供(gong)水(shui)(shui)系統是(shi)(shi)否供(gong)水(shui)(shui)正(zheng)(zheng)常(chang)、水(shui)(shui)位(wei)(wei)控(kong)(kong)(kong)制器(qi)(qi)工作是(shi)(shi)否正(zheng)(zheng)常(chang)。另一種可(ke)能是(shi)(shi)濕(shi)(shi)球(qiu)(qiu)紗(sha)布(bu)(bu)因使用(yong)時間長,或供(gong)水(shui)(shui)不(bu)是(shi)(shi)純凈水(shui)(shui)等(deng),使紗(sha)布(bu)(bu)吸(xi)水(shui)(shui)能力下降(jiang)而變得(de)干燥,只(zhi)要更(geng)換或清洗紗(sha)布(bu)(bu)即可(ke)排除以上(shang)現(xian)象(xiang)。
二、如何查看恒溫恒濕機是否正常
1、查(cha)看恒(heng)溫恒(heng)濕機溫度傳(chuan)感器傳(chuan)導到(dao)儀表上的(de)數據是否正常(chang),若不正常(chang),也會(hui)導致(zhi)壓縮機沒法(fa)啟動。
2、查看(kan)(kan)警報保護(hu)功能是(shi)否(fou)正(zheng)常,壓(ya)(ya)縮(suo)機是(shi)否(fou)啟動運行,檢查壓(ya)(ya)縮(suo)機的壓(ya)(ya)力表,查看(kan)(kan)里(li)面(mian)的制冷(leng)劑(ji)是(shi)否(fou)泄漏,如果制冷(leng)劑(ji)偏少(shao),需要檢漏補充制冷(leng)劑(ji),才(cai)可(ke)以使試驗箱正(zheng)常的降位。
3、因為恒溫恒濕機部分會(hui)采用復疊式制(zhi)冷方式,若(ruo)其中有(you)一臺壓(ya)縮機(ji)不(bu)能(neng)正常(chang)工(gong)(gong)作,也可能(neng)導(dao)致設備無法去正常(chang)降位檢查壓(ya)縮機(ji)的控制(zhi)系統是否正常(chang)工(gong)(gong)作,查看(kan)壓(ya)縮機(ji)運行動作是否有(you)異響(xiang),或發(fa)出不(bu)正常(chang)的工(gong)(gong)作聲音(yin),這些都會(hui)導(dao)致沒辦法降位。
4、查(cha)看(kan)冷(leng)凝風扇運行(xing)(xing)是(shi)(shi)否(fou)(fou)正(zheng)(zheng)常,看(kan)看(kan)進風口的(de)灰塵是(shi)(shi)否(fou)(fou)過厚(hou),檢(jian)查(cha)實驗室(shi)恒(heng)(heng)溫恒(heng)(heng)濕機(ji)里面循環風機(ji)是(shi)(shi)否(fou)(fou)運行(xing)(xing)正(zheng)(zheng)常,檢(jian)查(cha)壓縮機(ji)的(de)交流接觸器(qi)以及(ji)熱過載(zai)保(bao)護器(qi)是(shi)(shi)否(fou)(fou)損壞,查(cha)看(kan)管路中的(de)電(dian)(dian)磁閥是(shi)(shi)否(fou)(fou)打開,檢(jian)查(cha)加(jia)熱系統的(de)固態繼電(dian)(dian)器(qi)是(shi)(shi)否(fou)(fou)損壞,影響(xiang)降溫系統。