CWEA Maintenance Technologist Practice Test 2025 – Complete Exam Prep

Operating a pump at high cavitation levels can lead to significant damage to the impeller and a decrease in the pump's efficiency. Cavitation occurs when the pressure in the fluid drops below its vapor pressure, causing the formation and collapse of vapor bubbles within the pump. When these bubbles collapse, they generate shockwaves that can erode and physically damage the impeller and other internal components of the pump. This can compromise the structural integrity of the pump and lead to decreased performance and operational reliability.

Furthermore, as cavitation disrupts the normal flow within the pump, it results in a loss of efficiency as the pump cannot effectively move the required volume of fluid. Continuous operation under these conditions not only leads to increased maintenance costs due to the need for repairs or replacements but can also result in unsafe operating conditions and potential failures in the pumping system. The manifestation of damage from cavitation underscores the importance of monitoring operational parameters to prevent such occurrences.