Common problems and solutions of freeze-drying machine "Experience sharing"

　　I believe everyone has a good understanding of the functions and principles of freeze-drying machines. Freeze drying machines are mainly a new type of equipment for freeze-drying and preserving various fresh foods, fruits, vegetables, vaccines, cosmetics, and precious Chinese medicinal materials. It is often used in practice, especially in the processing industry, pharmaceutical factories, disease control centers, and hospitals. So there are also some common problems with freeze-drying machines. How can we quickly solve and lock in common problems when we encounter them? Now let the Dachang editor explain to you the relevant problems and corresponding solutions:

　　Firstly, we understand that freeze-drying machine is a drying technology based on sublimation principle. It rapidly freezes the dried material at low temperature, and then sublimates the frozen water molecules into water vapor in a vacuum environment. The product obtained through freeze-drying is called freeze-dried product, that is, freeze-dried product.

　　The material is always in a low temperature (frozen state) before drying, while ice crystals are evenly distributed in the material. The sublimation process will not condense due to dehydration, avoiding side effects such as foaming and oxidation caused by water vapor. The dry matter is sponge like, porous, and the volume remains basically unchanged. It is easily soluble in water and restores its original state, greatly preventing the physical and biological degradation of dry matter.

　　Common problem 1: Unstable power supply voltage

　　It is understood that the normal operating power supply voltage of the freeze dryer is 215-225V. If the voltage deviates from the allowable range, the compressor will not be able to work effectively or even operate at all. The solution to the problem of unstable power supply voltage is to replace it with a qualified power supply when the power supply voltage is not up to standard; When the power supply voltage is unstable, AVR (220V) or voltage regulator can be used on the original working power supply.

　　Common problem 2: Indoor temperature above 30 ℃

　　The freeze dryer needs to operate in a suitable environment. When the indoor temperature exceeds 30 ℃, the condenser may not be able to condense, resulting in system malfunction. The maintenance method at this time is that if the indoor temperature is around 28 ℃, the user can open the rear door of the condenser or open the room door to optimize ventilation and cooling conditions.

　　Common problem 3: Indoor temperature below 0 ℃

　　The indoor temperature is too high or too low. If the indoor temperature is below 9 ℃, the compressor oil will become viscous, which can easily affect the normal operation of the compressor. In addition, when the temperature is too low, all electronic components may be affected and misoperation may occur. The recommended repair method for this situation by technicians is to use other heating equipment to increase the ambient temperature when the ambient temperature is below 0 ℃, and maintain the temperature above 5 ℃ and below 30 ℃.

　　Common problem 4: Excessive dust on the freeze dryer or in the environment

　　It is understood that if there is too much dust covering the condenser and compressor, it is easy for the condenser to fail to achieve the condensing effect, which directly affects the performance of the compressor. Therefore, regular dust removal is essential. Industry advice suggests that if there is too much dust in the environment, users can regularly clean the dust covering the compressor and condenser every month. To ensure that the equipment is not damaged, a soft brush can be used to remove dust from the compressor, condenser, and pipelines.

　　Daily maintenance and upkeep of freeze-drying machine

　　1、 Before starting the freeze-drying machine, it is necessary to check whether the condenser on the back of the machine is clean to avoid poor heat dissipation.

　　2、 Before starting the freeze-drying machine, check if the safety device is reliable.

　　3、 After running the machine for 10-20 minutes, check if the working pressure and current are normal.

　　4、 After introducing compressed air, run for 10-20 minutes to check if the automatic drain is draining.

　　5、 Please open the drain valve of the machine at least twice a week.

　　6、 The manual drain valve of the machine needs to drain water at least twice a day.

　　7、 When the ambient temperature is high, please check if it exceeds 40 ℃. If it exceeds, please improve.

　　Overall, the above is the complete content about common problems and solutions of freeze-drying machines. The above content is for reference only. Specific situations can be solved with specific methods. If you encounter any questions, you can contact our engineers for answers.

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