Which outcome occurs when refrigerant leaks into a centrifugal chiller's lubricating oil system?

💡 Explanation

When refrigerant leaks into lubricating oil, solubility changes cause increased oil foaming because the dissolved refrigerant vaporizes under the lower pressures in the bearings, reducing the oil's ability to properly lubricate. Therefore, increased oil foaming and reduced lubrication results rather than slugging, overheating, or fouling, which depend on different coolant defects.

• Which outcome reduces hydrostatic pump efficiency when the accumulator discharge restriction increases beyond design limits?
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