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Refrigeration Operating Engineer License UPDATED ACTUAL QUESTIONS AND CORRECT ANSWERS
Refrigeration Operating Engineer License 
UPDATED ACTUAL QUESTIONS AND 
CORRECT ANSWERS 
Oil pressure switch - CORRECT ANSWERS 
no or partial lubrication. 
Off cycle defrost - CORRECT ANSWERS 
air in the cooler which will be above 32°. 
Filter dryer - CORRECT ANSWERS 
protects the compressor from operating too long with 
Used on medium temperature systems for defrost by the 
Removes dirt and moisture out of the refrigerator. 
Suction accumulator - CORRECT ANSWERS ...