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)(wen)試驗(yan)中(zhong),恒(heng)溫(wen)(wen)(wen)恒(heng)濕機(ji)的溫(wen)(wen)(wen)度(du)達不(bu)到試驗(yan)設(she)(she)定(ding)溫(wen)(wen)(wen)度(du)值時,檢查電(dian)路(lu)控(kong)制(zhi)(zhi)系統、加熱系統,逐一排除(chu)故(gu)障。溫(wen)(wen)(wen)度(du)升得很(hen)慢,要檢查風循(xun)環電(dian)機(ji)、風循(xun)環的調節擋板(ban)。溫(wen)(wen)(wen)度(du)過沖厲害,需要重新自整(zheng)定(ding)PID參(can)數,但一般自整(zheng)定(ding)時間較長,可根(gen)據廠家提供的經驗(yan)PID值設(she)(she)定(ding)。溫(wen)(wen)(wen)度(du)直接(jie)上升,不(bu)受控(kong)制(zhi)(zhi),說明(ming)控(kong)制(zhi)(zhi)電(dian)路(lu)出故(gu)障,須更換控(kong)制(zhi)(zhi)儀表或固態繼電(dian)器(SSR)等。
2、低溫達不到設定(ding)溫度值時,觀(guan)察溫度變化(hua)后(hou)(hou)再(zai)作判斷(duan)。如(ru)果恒溫恒濕(shi)機(ji)的(de)(de)溫度降得很慢,就要(yao)先將室內烘干(gan)(gan),使其(qi)完全干(gan)(gan)燥后(hou)(hou)再(zai)繼續(xu);如(ru)果溫度降到一定(ding)值后(hou)(hou)有回升(sheng)的(de)(de)趨勢(shi),就要(yao)考慮恒溫恒濕(shi)機(ji)的(de)(de)使用環(huan)境溫度是(shi)否(fou)過高、放置(zhi)的(de)(de)位置(zhi)是(shi)否(fou)太過靠(kao)墻等。在排除上述原因后(hou)(hou),就要(yao)考慮是(shi)否(fou)是(shi)制冷(leng)系(xi)統(tong)中的(de)(de)故障,冷(leng)媒不夠就要(yao)加對應(ying)型號的(de)(de)冷(leng)媒,如(ru)果是(shi)轉子泵等問題(ti),則要(yao)請廠家(jia)的(de)(de)專業人員進行檢修(xiu)。
3、在做濕(shi)(shi)(shi)熱試驗時(shi),出(chu)現濕(shi)(shi)(shi)度顯示值長期達到(dao)100%RH,但實測卻是(shi)(shi)非常低的(de)相對濕(shi)(shi)(shi)度時(shi),可能(neng)是(shi)(shi)濕(shi)(shi)(shi)球傳感器(qi)(qi)(qi)上(shang)的(de)紗布干(gan)燥(zao)引起(qi)。要檢查(cha)濕(shi)(shi)(shi)球傳感器(qi)(qi)(qi)的(de)水(shui)(shui)(shui)槽中是(shi)(shi)否缺水(shui)(shui)(shui),水(shui)(shui)(shui)槽中的(de)水(shui)(shui)(shui)位是(shi)(shi)由水(shui)(shui)(shui)位控(kong)(kong)(kong)制(zhi)器(qi)(qi)(qi)自動控(kong)(kong)(kong)制(zhi)的(de),查(cha)水(shui)(shui)(shui)位控(kong)(kong)(kong)制(zhi)器(qi)(qi)(qi)供(gong)(gong)水(shui)(shui)(shui)系統是(shi)(shi)否供(gong)(gong)水(shui)(shui)(shui)正(zheng)常、水(shui)(shui)(shui)位控(kong)(kong)(kong)制(zhi)器(qi)(qi)(qi)工作是(shi)(shi)否正(zheng)常。另一種可能(neng)是(shi)(shi)濕(shi)(shi)(shi)球紗布因使(shi)用時(shi)間長,或供(gong)(gong)水(shui)(shui)(shui)不是(shi)(shi)純凈水(shui)(shui)(shui)等,使(shi)紗布吸水(shui)(shui)(shui)能(neng)力下降而(er)變得干(gan)燥(zao),只(zhi)要更換或清洗紗布即(ji)可排(pai)除以上(shang)現象。
二、如何查看恒溫恒濕機是否正常
1、查看恒溫恒濕機(ji)溫度傳感器傳導到儀表上的數據是否正常(chang),若不正常(chang),也會導致(zhi)壓縮機(ji)沒法啟動(dong)。
2、查看警(jing)報保護功(gong)能(neng)是否正常(chang),壓縮(suo)機(ji)(ji)是否啟動運(yun)行,檢(jian)查壓縮(suo)機(ji)(ji)的(de)壓力表,查看里面的(de)制(zhi)冷劑是否泄漏(lou),如果制(zhi)冷劑偏少,需要檢(jian)漏(lou)補充制(zhi)冷劑,才可以使試驗箱正常(chang)的(de)降(jiang)位。
3、因為恒溫恒濕機部(bu)分會(hui)采用復疊式制(zhi)冷方式,若其(qi)中有一臺(tai)壓(ya)縮機(ji)(ji)不(bu)能正常(chang)工(gong)(gong)(gong)作(zuo),也可能導致設備無法去正常(chang)降(jiang)位檢查(cha)(cha)壓(ya)縮機(ji)(ji)的(de)控制(zhi)系統是(shi)否(fou)(fou)正常(chang)工(gong)(gong)(gong)作(zuo),查(cha)(cha)看壓(ya)縮機(ji)(ji)運行動(dong)作(zuo)是(shi)否(fou)(fou)有異響,或發(fa)出(chu)不(bu)正常(chang)的(de)工(gong)(gong)(gong)作(zuo)聲音,這些都會(hui)導致沒辦法降(jiang)位。
4、查(cha)(cha)看冷凝風(feng)扇運行是(shi)否(fou)(fou)(fou)正常,看看進風(feng)口的灰塵(chen)是(shi)否(fou)(fou)(fou)過厚,檢查(cha)(cha)實驗室恒溫(wen)(wen)恒濕(shi)機(ji)里面循環風(feng)機(ji)是(shi)否(fou)(fou)(fou)運行正常,檢查(cha)(cha)壓(ya)縮機(ji)的交流接(jie)觸器(qi)以及熱(re)(re)過載保護器(qi)是(shi)否(fou)(fou)(fou)損壞(huai),查(cha)(cha)看管路中的電磁閥(fa)是(shi)否(fou)(fou)(fou)打開,檢查(cha)(cha)加(jia)熱(re)(re)系統的固態繼電器(qi)是(shi)否(fou)(fou)(fou)損壞(huai),影響降溫(wen)(wen)系統。