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← TechnologyWhich outcome occurs rapidly when a positive displacement refrigerant pump experiences flooded start in an HVAC system?
A)Compressor valve plate fracture✓
B)Refrigerant expansion in the oil sump
C)System-wide particulate contamination
D)Decreased evaporator superheat values
💡 Explanation
When a 'flooded start' occurs, liquid refrigerant enters the pump compressing much more than intended because it is incompressible, which quickly causes pressure spikes that mechanically stress and fracture the compressor valve plate parts. Therefore valve plate fracture results instantly, rather than refrigerant expansion, contamination, or altered superheat, all requiring different failure dynamics within the whole circuit.
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