Reference for some common maintenance methods of freeze dryer

　　We all know clearly that the freeze-drying machine is composed of two parts: a refrigeration system and a vacuum system. The principle is that when the items to be added are placed in a low-temperature vacuum environment, the water contained therein is frozen into ice. The ice sublimates into water vapor under low pressure and is pumped out by the vacuum pump, thereby drying the items to be processed. Then we can come to the conclusion that the refrigeration system and vacuum system are the brains of the freeze-drying machine. As long as there is a problem with one of them, it will not function and work properly. Therefore, the daily maintenance of the freeze dryer is very important. Therefore, we need to regularly maintain and maintain the freeze-drying machine. I have summarized several common maintenance methods for the freeze-drying machine for reference. I hope it will be helpful to you:

　　Clean and disinfect

　　Regular cleaning and disinfection of the freeze dryer are basic steps in maintenance. Before cleaning, make sure the lyophilizer is powered off and cooled to room temperature. Use a mild detergent and a soft cloth or sponge to clean interior and exterior surfaces.

　　Regular cleaning

　　Equipment, including the condenser, vacuum pump and internal surfaces, should be cleaned every three to six months. Turn off the power and drain out all gas and moisture.

　　Observe and record instrument values

　　Observe and record instrument values ​​4 times per shift, including compressed air inlet and outlet pressure differences, evaporation pressure gauges, and high-pressure pressure gauges.

　　Pay attention to drainage and sewage systems

　　Cold dryers should always observe drainage and sewage systems, such as float drains, etc.

　　Maintain the rubber sealing ring between the plexiglass and the main unit: Make sure the sealing ring, sealing ring groove and other parts are clean during use.

　　Check pump oil quality

　　The vacuum pump is an important part of the vacuum freeze dryer, so it must be maintained carefully. Check the quality of the pump oil frequently. Generally, the vacuum pump oil needs to be replaced after about 200 cumulative working hours.

　　Replace fuse or repair circuit

　　When replacing fuses or repairing circuits, be sure to unplug the main power cord to avoid the risk of electric shock! The replacement fuse must be the same as the original model.

　　Regarding some common maintenance methods of freeze dryers, we will briefly introduce them here. The above are some common maintenance methods of freeze dryers. I hope they will be helpful to you. If you have any other questions, please feel free to ask me.

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