1)經常(chang)進行蒸(zheng)發器的檢(jian)(jian)漏工作。泄漏是蒸(zheng)發器常(chang)見(jian)的故(gu)障現象,在(zai)使用過程中應注意(yi)經常(chang)檢(jian)(jian)漏。
泄(xie)(xie)漏(lou)(lou)時,有刺激性(xing)氣味(wei),漏(lou)(lou)點處不(bu)結霜(shuang)(shuang)。對泄(xie)(xie)漏(lou)(lou)處可用(yong)酚酞試紙檢(jian)查,因為氨是堿性(xing),遇酚酞試紙變紅色。用(yong)眼看時,一般在蒸發器的某處不(bu)結霜(shuang)(shuang)的地方(fang)通常就是泄(xie)(xie)漏(lou)(lou)點,也(ye)可在泄(xie)(xie)漏(lou)(lou)處用(yong)肥皂水找漏(lou)(lou)。
蒸發(fa)器泄漏(lou)(lou)(lou)的(de)檢(jian)(jian)查可使(shi)(shi)用(yong)鹵素燈和鹵素檢(jian)(jian)漏(lou)(lou)(lou)儀(yi),也可用(yong)肥(fei)皂(zao)水(shui)找漏(lou)(lou)(lou)。檢(jian)(jian)查時(shi)可先用(yong)眼(yan)查看蒸發(fa)排管上(shang)是否有油(you)跡,因為氟(fu)(fu)利(li)(li)昂與(yu)油(you)能互(hu)溶,氟(fu)(fu)利(li)(li)昂泄漏(lou)(lou)(lou)時(shi),油(you)也會從漏(lou)(lou)(lou)點(dian)滲出,因此,哪(na)里(li)(li)有油(you)跡,哪(na)里(li)(li)就泄漏(lou)(lou)(lou)。用(yong)鹵素燈檢(jian)(jian)漏(lou)(lou)(lou)時(shi),若(ruo)某處有氟(fu)(fu)利(li)(li)昂泄漏(lou)(lou)(lou)時(shi),鹵素燈燃燒的(de)火(huo)焰(yan)由藍色(se)變成微綠、淺綠、草(cao)綠、紫(zi)綠、紫(zi)色(se)等(deng)顏色(se)可判斷氟(fu)(fu)利(li)(li)昂泄漏(lou)(lou)(lou)量的(de)多少。若(ruo)火(huo)焰(yan)呈(cheng)深綠或紫(zi)色(se)時(shi),火(huo)焰(yan)中的(de)光氣有毒,不能長時(shi)間用(yong)此方(fang)法檢(jian)(jian)查。這種情況下,可用(yong)肥(fei)皂(zao)水(shui)檢(jian)(jian)查泄漏(lou)(lou)(lou)點(dian)。對于微量泄漏(lou)(lou)(lou)時(shi),應使(shi)(shi)用(yong)鹵素檢(jian)(jian)漏(lou)(lou)(lou)儀(yi)進行檢(jian)(jian)漏(lou)(lou)(lou)。
2)經(jing)常對(dui)蒸發(fa)器的(de)結霜(shuang)狀況進(jin)行檢查。當(dang)霜(shuang)層過厚時(shi)(shi),應及時(shi)(shi)除(chu)(chu)霜(shuang)。當(dang)結霜(shuang)異(yi)常時(shi)(shi),可能是由于堵塞造成(cheng)的(de),應及時(shi)(shi)查找原因(yin)并予(yu)以排除(chu)(chu)。
3)蒸(zheng)發器(qi)長(chang)朝停用(yong)時,碰將制冷(leng)劑拙到儲液器(qi)或(huo)冷(leng)凝器(qi)中(zhong)(zhong),使蒸(zheng)發器(qi)的壓力保持在0.05MPa(表壓)左右為(wei)宜。若為(wei)鹽水池中(zhong)(zhong)的蒸(zheng)發器(qi),還需用(yong)自來(lai)(lai)水沖(chong)洗,沖(chong)洗后(hou)在池內注(zhu)滿自來(lai)(lai)水。