What is the purpose of heating the oil in...

Question 1 / 270705eccef9dbacbc34ba4d46016

Question 1 of 270705eccef9dbacbc34ba4d46016

What is the purpose of heating the oil in the crankcase of a refrigeration compressor during the off cycle?

Question 1 of 27070

What is the purpose of heating the oil in the crankcase of a refrigeration compressor during the off cycle?

🔍 Key Concepts

• Behavior of refrigerant in the crankcase during the off cycle • Effect of temperature on how much refrigerant dissolves in lubricating oil • Common problems caused when liquid refrigerant is mixed with crankcase oil at startup

💭 Think About

• Think about what happens to refrigerant when the compressor is not running and the crankcase is cold versus warm. • Ask yourself which problem, if not controlled, could lead to foaming, poor lubrication, or possible damage on the next start. • Consider how temperature affects the solubility (how much can be absorbed) of refrigerant in oil compared to moisture or the formation of wax and gum.

✅ Before You Answer

• Identify which choice directly involves refrigerant–oil interaction rather than other contaminants like moisture or acids. • Recall that warming the crankcase slightly will tend to drive something out of the oil rather than pull more into it. • Eliminate any options that describe issues not commonly associated with refrigeration compressor crankcase heaters (e.g., wax/gum formation).

Question 1 of 27070

What is the purpose of heating the oil in the crankcase of a refrigeration compressor during the off cycle?

reduce the absorption of refrigerant by the lubricating oil

prevent acidic pitting of compressor parts

reduce the absorption of moisture by the lubricating oil

prevent the formation of wax and gum

Question 1 / 270705eccef9dbacbc34ba4d46016

Question 1 of 270705eccef9dbacbc34ba4d46016

What is the purpose of heating the oil in the crankcase of a refrigeration compressor during the off cycle?

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Question 1 of 27070

What is the purpose of heating the oil in the crankcase of a refrigeration compressor during the off cycle?