Reference for some common maintenance methods of freeze-drying machine

　　We all know that a freeze dryer consists of two main parts: a refrigeration system and a vacuum system. Its principle is that when the object being processed is placed in a low-temperature vacuum environment, the water it contains is frozen into ice, which sublimates into water vapor under low pressure and is pumped out by a vacuum pump to dry the processed object. So we can conclude that the refrigeration system and vacuum system are the same as the freeze-drying machine and the brain. As long as one of them has a problem, they cannot function and work properly. Therefore, daily maintenance and upkeep of the freeze dryer is a crucial task. So we need to regularly maintain and upkeep the freeze dryer. I have summarized several common maintenance methods for freeze dryers for you, hoping to be helpful:

　　Cleaning and disinfection

　　Regular cleaning and disinfection of the freeze-drying machine are basic maintenance steps. Before cleaning, ensure that the freeze dryer has been powered off and cooled to room temperature. Use a mild cleaning agent and a soft cloth or sponge to clean the inner and outer surfaces.

　　regular cleaning

　　The equipment, including the condenser, vacuum pump, and internal surfaces, should be cleaned every three to six months. Turn off the power and exhaust all gases and moisture.

　　Observe and record instrument values

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

　　Pay attention to drainage and sewage systems

　　Cold dryers should be regularly monitored for drainage and sewage systems, such as float drains.

　　Maintain the rubber sealing ring between the organic glass and the host: When using, ensure that the sealing ring, sealing ring groove, and other parts are clean.

　　Check the quality of pump oil

　　The vacuum pump is an important component of the vacuum freeze dryer, so it should be maintained carefully. Regularly check the quality of the pump oil. Generally, after working for about 200 hours, the vacuum pump oil needs to be replaced.

　　Replace the fuse or repair the 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.

　　We have briefly introduced some common maintenance methods for freeze-drying machines here. The above are some common maintenance methods for freeze-drying machines, hoping to be helpful to you. If you have any other questions, please feel free to ask me.

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