Slugging

Air Conditioning and Heat Pumps · Air Conditioning Capacity · printed page 215 (PDF page 216)

Book index entries

Air Conditioning – Slugging Compressor – Slugging on Air Conditioning Air Conditioning – Compressor Compressor – Air Conditioning

Text in the illustration

that occurs when refrigerant refrigerant not refrigerant
slugging is the term for the problem that occurs when refrigerant liquid instead of gas enters the compressor
this is very hard on the valves and is most often caused by the refrigerant not getting heated up enough at the evaporator (perhaps due to low airflow, dirty coil, furnace fan problems etc.)
refrigerant flow
motor rotor
valves
suction side
discharge side
oil
cross section

Generated explanation

A cross section of an air-conditioning compressor shows the motor rotor, compressor valves, and an oil sump at the bottom of the housing. Arrows trace refrigerant entering the suction side, circulating through the housing, and leaving the discharge side. Liquid droplets illustrate slugging, in which liquid refrigerant enters the compressor instead of gas, stressing the valves. The annotation links this condition to insufficient heating of refrigerant in the evaporator, potentially caused by low airflow, a dirty coil, or furnace fan problems.