What are the check points should be checked prior to starting a centrifugal pump?

Following care should be taken prior to starting a centrifugal pump:

- The suction valve should be open prior to pump start
- The suction valve must remain open during pump is running.
- Bearings should be normal operating temperature when the pump is started.
- The discharge valve should be closed when a centrifugal pump is started, to prevent excessive load on the motor and prevent excessive starting torque.
- Cooling water and lubrication system should be checked prior to starting a pump.
- Ensure pump is filled with liquid and vented, to prevent gas binding and cavitation due to air and gas in the pump casing.
- Check the lubrication oil level and flow and cooling water temperature to the bearings.
- The discharge valve should not be closed for an extended period. Some recirculation flow is necessary to prevent overheat of the pump.