小型制藥冷凍干燥機日常維護和保養！
Check Before Running: 每次開機前要例行檢查
ü The state of various valves (absorbing, exhausting valves for compressors, service valves, capped valves and etc.)
所有截止閥（壓縮機吸、排氣閥、供液閥、手閥等）處于開啟狀態；
ü Pressure meter: 0.6～0.7Mpa
壓力表正常讀數：0.6～0.7Mpa
ü Level of compressor oil: 1/4～3/4
壓縮機正常油位：1/4～3/4；
After Power Supply, Please Notice: 送電后應注意
ü Whether compressor collects the refrigerant
壓縮機是否自動收液；
ü Whether difference-oil pressure resets
油壓差是否復位等；
After Running, Please Notice: 開機后注意
ü Whether the sound of compressor is normal, if not, please check power supply
壓縮機運行聲音是否正常，如果異常請先檢查供電的三相電是否平衡；
ü Whether the refrigerating piping vibrates normally, if yes, please fix the loosen parts
制冷管路是否有異常振動，如果有則采用相應的固定措施；
ü Whether the flux of refrigerant is normal by observing the sight glass, if having bubble in sight glass, please check the content of refrigerant and thermostatic valves
視液鏡流量是否正常，若有氣泡，則說明制冷劑缺少或膨脹閥流量太大；
ü The state of frosting on the thermostatic valves
膨脹閥結霜情況；
ü The state of frosting on the compressor
壓縮機回霜情況；
ü Compressor oil return, generally, 1/3～3/4
冷凍油的回油情況；（一般保持在油視鏡的1/3～3/4）
Compressor Start-up: 壓縮機啟動
ü Start frequently as little as possible, internal more than 3min
不能頻繁啟動，間隔的時間應大于3min；
