Massachusetts Wastewater Practice Exam

Unusual noise from the pump is a significant indicator of excessive wear in pump components. When components such as bearings, impellers, or seals begin to wear down, they can create irregularities in operation that manifest as sounds that are different from the normal operation. These noises can include grinding, screeching, or thumping, which indicate that parts are not functioning smoothly, and could be a result of damage or degradation from prolonged use or inadequate maintenance. Monitoring for unusual noises is crucial, as they often provide the first warning of potential mechanical issues, allowing for timely intervention to prevent further damage or complete failure of the pump system.

In contrast, increased fluid viscosity can affect pump performance but does not directly indicate wear, maintaining a consistent flow rate typically signifies that the pump is functioning correctly, and a normal operating temperature does not usually correlate with wear unless there are other indicators present.