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Which outcome occurs when a refrigeration system compressor uses refrigerant contaminated with non-condensable gases?

A)Increased discharge pressure and temperature
B)Reduced cooling capacity and motor current
C)Compressor oil foaming and bearing failure
D)Evaporator coil icing and airflow reduction

💡 Explanation

When non-condensable gases contaminate the refrigerant, partial pressure increases because Dalton's Law, leading to higher overall system pressure and discharge temperature. Therefore increased discharge pressure and temperature result, rather than reduced capacity, oil foaming or coil icing, requiring leakage, lubrication issues, or high humidity, respectively.

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