SE，NSE series moisture liquid indicator is fitted the pipe line of freezer or air conditioner system in order to show moisture of refrigerant and flow status of refrigerant and lubricating oil．Also，it indicates the oil level of compressor crooked－shaft box，so that we can look and control the system running status everytime in order to keep the equipment in good and safety running status．

　　While you fit SE or NSE series moisture liquid indicator，maybe the colorof moisture indicator is pink，because it absorbs moisture in air．When fitting it in air conditioner system，if moisture of refrigerant is acceptable，color changing area of the indicator will change to blue color after around 10 hours．If after 10 hours，color changing area still can’t change to blue color，you have to look for what is cause from or change filter dryer in system．

　　 Before fit the moisture liquid indicator，the refrigerating system must be clear and drying．It can prevent over moisture or cool oil or dirt from polluting the color changing area．If so，it will be invalid．