Which statement about the crankcase heater is true?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $9.99Unlock all

Prepare for the HVAC D-2 License Test with our engaging study materials. Explore comprehensive flashcards and multiple-choice questions with hints and explanations. Ace your exam confidently!

Multiple Choice

Which statement about the crankcase heater is true?

Explanation:
The crankcase heater’s job is to warm the compressor crankcase so any liquid refrigerant that has migrated into the oil can be boiled off and returned to the vapor space. This prevents refrigerant from diluting the oil and helps avoid slugging or lubrication problems when the compressor restarts. It doesn’t cool the oil, increase the refrigerant charge, or filter refrigerant, so those statements aren’t true.

The crankcase heater’s job is to warm the compressor crankcase so any liquid refrigerant that has migrated into the oil can be boiled off and returned to the vapor space. This prevents refrigerant from diluting the oil and helps avoid slugging or lubrication problems when the compressor restarts. It doesn’t cool the oil, increase the refrigerant charge, or filter refrigerant, so those statements aren’t true.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy