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← TechnologyWithin hydraulic elevators employing a PID controller, which outcome occurs when inadequate filter maintenance introduces particulate contamination?
A)Valve spool seizure increases✓
B)Pump efficiency steadily increases
C)Fluid viscosity demonstrates decline
D)Actuator response becomes immediate
💡 Explanation
Spool seizure increases because particulate contamination causes restricted movement; the PID controller attempts compensation via increased valve activity, accelerating wear due to abrasive contaminants. Therefore, valve seizure probability rises, rather than improved pump efficiency or lowered viscosity due to contamination.
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