Is It Necessary To Fill The Centrifugal Pump Before Starting in All Cases? Why?

May 17, 2024

Filling a centrifugal pump before starting is highly recommended as it can ensure the smooth operation of the pump and avoid damage to the motor and other components.

When the pump is first started, there is no liquid in the pump casing. This can cause the impeller to spin freely without any resistance, creating a condition known as "dry running." Dry running can lead to the rapid wear and tear of the impeller and cause damage to the pump casing.

By filling the pump before starting, the impeller will have some liquid to work against, reducing the risk of damage caused by dry running. This also helps to prime the pump, ensuring that the suction line is fully charged with liquid, creating a more efficient pumping process.

Overall, it is strongly recommended to fill a centrifugal pump before starting to ensure its smooth operation and prevent any unnecessary damage. A small amount of preparation can go a long way in extending the life of the pump and ensuring that it runs effectively and efficiently.