Question

question 24 the purpose of the crankcase heater on an air - conditioning compressor is to help the system defrost help to dehumidify the air warm the refrigerant so that it can be condensed boil the refrigerant out of the lubricating oil heat the lubricating oil to reduce its viscosity

Explanation:

The crankcase heater in an air - conditioning compressor is mainly used to boil the refrigerant out of the lubricating oil. This helps prevent liquid refrigerant from entering the compressor during startup, which can cause damage such as slugging.

Answer:

boil the refrigerant out of the lubricating oil