What action should be taken to ensure the train is charged properly after installing bus jumpers?

To ensure the train is charged properly after installing bus jumpers, verifying that air is built up sufficiently is crucial. The air system plays a vital role in the operation of various train components, including brakes and propulsion systems. If the air pressure is not adequate, the train may not function correctly, leading to potential safety hazards and operational issues.

When jumpers are installed, a stable air pressure needs to be established to recharge the system effectively. This ensures that all pneumatic systems are operational and can execute necessary functions. Properly charged air systems allow for the timely engagement and release of brakes and other mechanisms crucial for safe train operation.

While releasing the hand brakes, checking the alignment of the jumpers, and clearing the area of personnel are important safety procedures in the operation of a train, they do not directly influence the charging of the train's air system in the same way that confirming adequate air pressure does. Therefore, verifying that air has built up sufficiently is essential for ensuring that the train can operate safely and efficiently after bus jumpers have been installed.