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Which risk increases when high compression ratio occurs within scroll compressors?

A)Excessive lubricant film breakdown
B)Decreased refrigerant subcooling capacity
C)Increased compressor motor slip
D)Reduced volumetric efficiency gained

💡 Explanation

Excessive compression causes elevated temperatures where lubricant viscosity decreases, leading to boundary lubrication rather than hydrodynamic; therefore, film breakdown increases and bearing wear accelerates because heat weakens the lubricant, rather than directly affecting refrigerant cooling.

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