What device is installed on a compressor to evaporate the refrigerant from the oil?

The crankcase heater is designed to prevent the refrigerant from mixing with the oil in the compressor's crankcase, ensuring proper functionality and efficiency. When the compressor is not running, refrigerant can dissolve into the oil, which can lead to issues like poor lubrication and potential compressor failure upon startup.

By using a crankcase heater, the oil temperature is raised, which helps to evaporate the refrigerant back into the vapor form, thereby reducing the likelihood of refrigerant dilution in the oil. This ensures that the compressor operates smoothly and maintains optimal performance, as adequate lubrication is crucial for longevity and reliability.

In contrast, a compressor cooler is primarily used to lower the temperature of the compressor during operation, while an oil separator collects and returns liquid refrigerant to the system, rather than specifically evaporating it from the oil. A refrigerant diverter is used to redirect refrigerant flow but does not play a role in managing oil and refrigerant interaction within the crankcase.