Question 175Refrigeration & AC - 1st Asst/Chief

70% to pass

If a refrigeration system were short of refrigerant, besides an elevated box temperature, what would be an observable symptom?

Ashort cycling of the compressor on the water failure switch
Bhigh suction pressure
Ccontinuous running of the compressor
Dhigh discharge pressure
AI Explanation

The correct answer is C) continuous running of the compressor. When a refrigeration system is short of refrigerant, the system will not have enough refrigerant to effectively cool the refrigerated space. This will cause the compressor to run continuously in an attempt to reach the desired temperature, but it will be unable to do so due to the lack of refrigerant. The other answer choices are incorrect because they do not accurately describe the symptoms of a refrigerant shortage. A short cycling compressor is typically caused by a different issue, such as a water failure, and high suction or discharge pressures can have various causes, but are not the primary symptom of a refrigerant shortage.

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