How can cavitation, indicated by a rattling noise, be checked?

Cavitation occurs when there is a rapid change in pressure in a fluid, leading to the formation and collapse of vapor bubbles, which can create a distinctive rattling noise. One way to check for this issue is by examining the system for a clogged inlet filter. A clogged filter can restrict the flow of fluid, resulting in low inlet pressure, which is conducive to cavitation. When the pressure drops significantly, it can lead to the conditions necessary for cavitation to occur, causing the rattling noise.

While installing a vacuum gauge on the pressure line can also be beneficial in monitoring the pressure levels and helping to diagnose cavitation, it is more of a diagnostic tool than a straightforward check for the problem itself. Similarly, a flow meter on the drain line may provide data on flow rates but does not directly indicate the presence of cavitation.

By starting with a visual inspection for a clogged inlet filter, one can directly address a very common cause of cavitation. Recognizing this relationship emphasizes the importance of maintaining clean filters to ensure proper fluid flow and minimize the risk of cavitation within a system. Therefore, focusing on the inlet filter effectively aids in diagnosing and mitigating cavitation issues.