What should be the first action if a pump starts to run dry?

The first action when a pump starts running dry should be to check water supply sources. A pump running dry can lead to significant damage and can severely affect its performance. By checking the water supply, you can identify whether there are issues with the water source, such as low levels or a blockage, that need to be addressed quickly to prevent further complications.

Ensuring that the pump has a sufficient water supply is crucial for its operation and longevity. Restoring the water supply allows for the pump to function correctly and ensures continuous operation during firefighting efforts. Therefore, addressing the source of water is the logical initial response to prevent damage to the pump and any potential hazards related to a dry pump situation.