ESCO Air Conditioning Practice Exam

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Prepare for the ESCO Air Conditioning Test with our comprehensive quiz. Practice with multiple choice questions, each provided with hints and explanations. Ace your ESCO Air Conditioning Exam!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

Why must refrigerant in the suction line be slightly warmer than the saturation temperature?

Ensure proper oil return
Prevent excessive energy use
Prevent liquid slugging of the compressor
Reduce discharge pressure

The correct answer is: Ensure proper oil return

Refrigerant in the suction line must be slightly warmer than the saturation temperature in order to ensure proper oil return to the compressor. If the refrigerant is too cold, it may cause the oil to condense and accumulate in the compressor, potentially leading to issues such as reduced lubrication and mechanical damage. Choices B, C, and D are incorrect options because they do not directly address the issue of proper oil return. Preventing excessive energy use, preventing liquid slugging of the compressor, and reducing discharge pressure may be potential benefits of having slightly warmer refrigerant, but they are not the main reason for this requirement.