Question 72Refrigeration & AC - Assistant Engineer

70% to pass

Which of the devices listed will indicate whether or not a refrigeration system's dehydrator continues to be capable of removing moisture from the circulating refrigerant?

AParticulate test
BMcLeod gage
CDryer sensing bulb
DLiquid line moisture indicating sight glass
AI Explanation

The correct answer is D) Liquid line moisture indicating sight glass. The liquid line moisture indicating sight glass allows the operator to visually inspect the refrigerant for any moisture or contamination. If the dehydrator is no longer effectively removing moisture from the system, it will be indicated by the presence of moisture or bubbles in the sight glass. This provides a quick and easy way to assess the condition of the dehydrator and determine if it needs to be replaced or serviced. The other options, such as a particulate test or a McLeod gage, are not specifically designed to monitor the performance of the dehydrator. The dryer sensing bulb may indicate issues with the refrigeration system, but it does not directly assess the dehydrator's capability.

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