What's the reason why the temperature of the fresh-keeping cold storage cannot be lowered?

Fresh cold storage is a type of cold storage, and for any cold storage, the inability to lower the temperature is a big problem. So, what are the reasons why the temperature of a fresh cold storage cannot be lowered? How should we solve it again? Below, the editor of Henan Cold Storage Construction will give you a detailed introduction: Firstly, the power shortage caused by compressor wear and tear cannot meet the efficiency required for cold storage. Freshness preservation cold storage usually only occurs after a period of use, which is also a problem that is more likely to occur in cold storage that has been used for a long time. We can roughly judge the refrigeration capacity of the compressor by observing its suction and discharge pressures to determine if such problems have occurred. If abnormalities are found, friends with conditions should replace the cylinder liner and piston ring components as soon as possible. If the problem still cannot be solved, it is necessary to consider dismantling and repairing the machine. In this case, timely contact with the equipment after-sales service should be made. Secondly, if there are leaks in the equipment that cause insufficient refrigerant, it is also easier to investigate. If there are no leaks and the refrigerant is simply insufficient, then we can replenish it in a timely manner. If we find that the problem disappears after supplementing, but it quickly recurs, then we need to promptly investigate whether there are any leaks in the equipment. Focus on inspecting all pipelines and valve connections, promptly repair any leaks found, and then add sufficient refrigerant. 3、 If there is too much frost on the evaporator, or if there is a lot of refrigerant oil and frost on the air evaporator, it is best not to exceed 3 millimeters. If the frost is too thick, it will result in poor heat transfer efficiency, causing a certain heat transfer temperature difference between the evaporator and the cold storage. The refrigerant in the evaporator will not absorb enough heat to vaporize, which will also cause the temperature of the fresh-keeping cold storage to not drop. Therefore, we need to defrost in a timely manner. Another way is if there is too much refrigerant oil and air in the evaporator, it can be checked and solved in a timely manner