Many people think that the refrigeration effect of cold storage is poor, and adding more refrigerants (such as Freon) can solve the problem, and even have a stronger effect. But this is actually a serious misconception.

Why isn't more the better?

The refrigeration system is a precision cycle, and the capacity of each component is strictly calculated. Excessive refrigerant can lead to:
Power consumption skyrockets and the effect deteriorates: Excess refrigerant will occupy the space of the condenser, resulting in poor heat dissipation and high pressure. The compressor operates with greater difficulty, resulting in a significant increase in power consumption, but the cooling efficiency actually decreases.
Damaging the compressor, causing "liquid hammer": The unevaporated liquid refrigerant may flow back to the compressor. As the liquid cannot be compressed, it will break the internal parts like a hammer, resulting in the compressor being scrapped and the repair cost being extremely high.

What is the correct approach?

There are many reasons for the deterioration of refrigeration effect, which may be due to dirty heat exchangers, system leaks, or expansion valve failures, but it is not necessarily a lack of refrigerant.

Conclusion:

Do not blindly add refrigerant on your own. The most correct approach is to contact professional engineers, who will use professional tools to inspect and accurately repair. Remember, 'on-demand filling' is the key to ensuring efficient and long-lasting operation of cold storage.