What is the first step in shutting down the pump?

The appropriate first step in shutting down the pump is to decrease the engine speed to idle. This action serves several important purposes. By reducing the engine speed, you ensure that the pump is no longer working at high capacity, which can prevent damage to the pump and the connected equipment during the shutdown process.

Decreasing the engine speed to idle allows for a controlled reduction in pressure, minimizing the risk of water hammer or sudden changes in pressure that could lead to damage or accidents. It also ensures that any residual water within the system can be safely expelled without overwhelming the system's components.

Following this procedure is critical for maintaining the longevity of the pump and ensuring the safety of personnel operating it. This careful approach helps ensure a smooth transition from operational status to a complete shutdown.