What should be done if an additional section of hose is added to the set length?

The correct approach when an additional section of hose is added to the set length is to adjust the original set pressure according to the official pump chart. This is crucial because the extended length of hose affects friction loss, which in turn impacts the overall pressure required to maintain adequate flow at the nozzle. The pump chart provides the necessary calculations for adjusting pressure while taking into account the increased distance and potential increase in friction losses that result from the additional hose.

By consulting the pump chart, the Driver Engineer ensures that the fire apparatus maintains optimal flow and pressure, which is critical for firefighting operations. This proactive adjustment enhances the effectiveness of the fire attack and ensures that personnel on the scene have the necessary water supply to combat fire effectively.

In addition, while other options suggest various actions, they do not address the fundamental need to recalibrate the pressure to accommodate the longer hose length, which is essential for ensuring safe and effective operation.