Question 25Refrigeration & AC - Assistant Engineer

70% to pass

How should small appliances with less than three pounds of refrigerant be charged with refrigerant?

Ainitially liquid charged and then topped with a vapor charge
Bvapor charged
Ceither vapor or liquid charged
Dliquid charged
AI Explanation

The correct answer is B) vapor charged. Small appliances with less than three pounds of refrigerant should be charged with refrigerant in the vapor phase. This is in accordance with industry standards and best practices to ensure proper and safe charging of these types of systems. Vapor charging helps prevent liquid refrigerant from being drawn into the compressor, which could damage the system. The other options are incorrect because liquid charging (D) is not recommended for small appliances, and a combination of liquid and vapor charging (A) is unnecessary and can lead to improper system operation. Vapor charging (B) is the proper and recommended method for these types of systems.

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Official Resources
46 CFR Machinery & Electrical 46 CFR Engineering USCG National Maritime Center
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