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Liquid refrigerant charging of a system is normally accomplished in the liquid line. For example, when a system is out of refrigerant, liquid refrigerant can be charged into the king valve on the liquid line or receiver.
The heat is released by heat exchangers in the atmosphere.
Vaporizing the refrigerant
To endure that the ONLY gas in the system is refrigerant.
The refrigerant in the refrigrration system absorbs large quantities of heat and releases it to the atmosphere
Vaporizing the Refrigerant
Two problems that a refrigeration system could have are compressor problems or a lack of or loss of refrigerant gas.
Use a vacuum pump that pulls it into a tank.
Ice
ACID
Condensor
The compressor oil