What potential issue can arise if rags or debris get lodged in a centrifugal sewage pump?

If rags or debris get lodged in a centrifugal sewage pump, the most relevant concern is that it may cause increased wear on the impeller. When foreign objects become trapped in the pump, they can create an obstruction that affects the flow of sewage and increases the operational strain on the impeller. This results in premature wear and tear, potentially leading to failure of the pump or a significant decrease in its efficiency.

In contrast, while a blockage can sometimes lead to the circuit breaker tripping due to increased current draw, it is important to recognize that the primary issue in this scenario is the mechanical wear on the pump components. This wear can gradually compromise the pump's functionality and performance, necessitating maintenance and repairs.