What maintenance activity should be performed to ensure long pump life?

To ensure long pump life, all the listed maintenance activities—regular oil changes, checking for air leaks, and inspecting electrical connections—are crucial and should be performed consistently. Each of these practices addresses different aspects of pump operation and helps to maintain optimum performance.

Regular oil changes are essential because they keep the pump bearings and other internal components lubricated, reducing friction and wear. This is necessary to prolong the lifespan of the mechanical parts and prevent failures due to lack of lubrication.

Checking for air leaks is also critical. If air enters a pumping system, it can lead to cavitation, which can cause significant damage to the pump impeller and other components. Ensuring airtight seals helps to maintain the efficiency of the pump and its overall operational stability.

Inspecting electrical connections ensures that the pump operates without interruption and at its required power. Poor electrical connections can lead to failures or inconsistent performance, which puts additional strain on the pump components and can lead to premature wear.

By performing all these maintenance activities, operators can ensure that the pump runs efficiently, reducing the likelihood of breakdowns and extending its operational life. This comprehensive approach to maintenance helps safeguard the investment in the pump and ensures consistent service within the wastewater management system.