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Engine: Retired questions · Refrigeration AC

Question 373 of 134

Retired question: the Coast Guard no longer draws it on exams. Practice the current Refrigeration AC module instead.

Using the illustrated chart giving the boiling point of moisture at various depths of vacuum, with an ambient temperature of 72 °F, what depth of vacuum would be associated with the BEST chance of achieving a dehydration evacuation with a deep vacuum pump? Illustration GS-RA-56

Illustration GS-RA-56: the U.S. Coast Guard has not released this illustration.
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