小型制药冷冻干燥机日常维护和保养！
check beforerunning:每次开机前要例行检查
üthe state of variousvalves (absorbing, exhausting valves for compressors, service valves, capped valves and etc.)
所有截止阀（压缩机吸、排气阀、供液阀、手阀等）处于开启状态；
üpressure meter: 0.6～0.7mpa
压力表正常读数：0.6～0.7mpa
ülevel of compressor oil: 1/4～3/4
压缩机正常油位：1/4～3/4；
after power supply, please notice:送电后应注意
üwhether compressor collects the refrigerant
压缩机是否自动收液；
üwhether difference-oil pressure resets
油压差是否复位等；
after running, please notice:开机后注意
üwhether the sound of compressor is normal, if not, please check power supply
压缩机运行声音是否正常，如果异常请先检查供电的三相电是否平衡；
üwhether the refrigerating piping vibrates normally, if yes, please fix the loosen parts
制冷管路是否有异常振动，如果有则采用相应的固定措施；
üwhether 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
视液镜流量是否正常，若有气泡，则说明制冷剂缺少或膨胀阀流量太大；
üthe state of frosting on the thermostatic valves
膨胀阀结霜情况；
üthe state of frosting on the compressor
压缩机回霜情况；
ücompressor oil return, generally, 1/3～3/4
冷冻油的回油情况；（一般保持在油视镜的1/3～3/4）
compressor start-up:压缩机启动
üstart frequentlyas little as possible, internal more than 3min
不能频繁启动，间隔的时间应大于3min；
上海拓纷机械设备有限公司{搜索公司名即可找到我们｝