Which risk increases when the cooling load on a chiller causes prolonged low refrigerant flow rates?

💡 Explanation

Prolonged inadequate refrigerant flow leads to reduced heat removal from the compressor motor via the refrigerant; the increased resistance heats the windings above the insulation limit because the forced convection decreases, therefore winding failure is increasingly likely, rather than improved subcooling or dilution.

• Which outcome occurs when a hydraulic proportional valve's pilot stage experiences excessive silting?
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