The temperature of the vacuum pre cooler for fruits and vegetables does not decrease but instead increases

　　What is the reason why the temperature of the fruit and vegetable vacuum pre cooler does not decrease but instead increases?

　　Some time ago, our engineers received feedback from customers or peers that the temperature of the fruit and vegetable vacuum pre cooler did not decrease but instead increased during operation. So, what is the reason for this? Below, the technical engineer of Ganzhou Dachang vacuum pre cooler will analyze the reasons for this.

　　1. The door of the vacuum precooler is not tightly closed or not fixed or locked, resulting in continuous air entering the vacuum box and causing the temperature to not drop.

　　Solution:Close the door again and lock the door latch.

　　2. Caused by vacuum pump failure, such as insufficient vacuum pump pumping force, dirty vacuum pump oil, insufficient or excessive oil volume, and damaged vacuum pump.

　　Solution:Replace the vacuum pump oil with a new one, adjust it to the appropriate level, and repair the vacuum pump; Or replace the vacuum pump with a new one.

　　3. The reasons for the refrigeration compressor not cooling, refrigerant leakage in the refrigeration pipeline, and compressor problems.

　　Solution: Check the leaking refrigerant and repair it (vacuum again, add new refrigerant), repair the compressor or replace it.

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