The lubrication oil in the crankcase of a...

Question 1 / 270705eccef9dbacbc34ba4d46017

Question 1 of 270705eccef9dbacbc34ba4d46017

The lubrication oil in the crankcase of a refrigeration compressor that is shut down is heated. For what purpose is this done?

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Question 1 of 27070

The lubrication oil in the crankcase of a refrigeration compressor that is shut down is heated. For what purpose is this done?

🔍 Key Concepts

• Refrigerant–oil relationship in the crankcase when the compressor is idle • How temperature affects refrigerant dissolving into or coming out of oil • What happens to moisture and contaminants in oil when it is gently heated

💭 Think About

• When a compressor is shut down, what does the refrigerant tend to do in cooler oil—dissolve into it, boil off, or separate? • If you slightly raise the oil temperature, which of the listed effects is most important for protecting the compressor at the next start? • Which choice directly addresses avoiding liquid or gas refrigerant problems inside the crankcase on start‑up, rather than cleaning or conditioning the oil?

✅ Before You Answer

• Identify which option deals specifically with refrigerant behavior in oil, not general oil cleaning. • Ask: Does gentle crankcase heating usually reach temperatures high enough to remove water, wax, or gum from lube oil? • Consider which effect would reduce the risk of damage (like foaming, loss of lubrication, or slugging) when the compressor restarts.

Question 1 of 27070

The lubrication oil in the crankcase of a refrigeration compressor that is shut down is heated. For what purpose is this done?

reduce absorption of refrigerant by the oil

prevent refrigerant vaporization

remove entrained water

remove wax and gum

Question 1 / 270705eccef9dbacbc34ba4d46017

Question 1 of 270705eccef9dbacbc34ba4d46017

The lubrication oil in the crankcase of a refrigeration compressor that is shut down is heated. For what purpose is this done?

Back

Question 1 of 27070

The lubrication oil in the crankcase of a refrigeration compressor that is shut down is heated. For what purpose is this done?