What should be set before placing the apparatus in pumping mode?

Before placing the fire apparatus in pumping mode, it is essential to engage the parking brake. The parking brake ensures that the vehicle remains stationary while the pump is in operation, which is critical for safety and stability. Engaging the parking brake prevents any unintended movement that could occur due to the weight of the apparatus or external forces, providing a secure platform from which the pump can operate effectively. This step is part of the standard operating procedures to protect both the personnel involved and the integrity of the equipment.

While securing the fire apparatus with chocks or using the emergency brake is also important, the most crucial action specifically tied to transitioning to pumping mode is the use of the parking brake. This action provides a stable foundation for the entire operation of the pump, allowing firefighters to focus on their tasks without worrying about the movement of the vehicle.