Engine Refrigeration (Supplementary) USCG Question #579 (Set 8)

When recovering R-12 from a small appliance with a working compressor, using a recovery device manufactured after November 15, 1993, what percentage of the remaining charge must be removed from the system?

Official USCG Answer & Rule Citation

Correct Answer: Option D — 90%

Under USCG National Maritime Center examination standards, the accepted correct answer is: 90%.

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