ESCO Air Conditioning Practice Exam

Liquid slugging refers to the presence of liquid refrigerant in the compressor clearance space, which occurs when liquid refrigerant enters the compressor rather than vapor. Compressors are designed to compress only vapor; when liquid refrigerant is introduced, it can cause serious mechanical damage.

This condition typically arises in systems where there are issues such as insufficient superheating or improper refrigerant management. Compression of liquid can lead to hydraulic lock, causing stress on the compressor components and potential failure of the compressor. Recognizing liquid slugging is crucial for maintaining the health and longevity of the air conditioning system, as it directly affects the performance and reliability of the unit.

By understanding liquid slugging, technicians can troubleshoot and prevent issues related to refrigerant management, ensuring efficient operation of air conditioning systems.