C-38 Refrigeration Practice Questions - California CSLB C-38 Refrigeration Examination Exam

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According to standard commercial refrigeration piping guidelines, what minimum suction line refrigerant velocity must be maintained in vertical risers during minimum system load capacity to ensure proper oil return to the compressor?

1,500 feet per minute minimum line velocity. 2,500 feet per minute minimum line velocity. 3,500 feet per minute minimum line velocity. 4,500 feet per minute minimum line velocity.

Correct Answer:

1,500 feet per minute minimum line velocity.

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