SC Refrigeration Practice Questions - South Carolina Refrigeration Contractor Examination Exam

Oil logging in an evaporator or suction line is most likely when:

Suction velocity is too low to sweep oil back to the compressor, or the oil is immiscible with the refrigerant The liquid line is insulated The condenser is slightly oversized The TXV bulb is properly strapped and insulated

Correct Answer:

Suction velocity is too low to sweep oil back to the compressor, or the oil is immiscible with the refrigerant

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