At what pressure in pounds should the motor stop running according to the operational standards?

The motor should stop running at a pressure of 140 lbs according to the operational standards. This threshold is critical for maintaining the safety and efficiency of the train's operations. If the motor continues to operate above this pressure, it could lead to excessive strain on the components, leading to potential failures or unsafe conditions.

In this context, setting a stop pressure ensures that the system remains within safe limits, preventing excessive wear and prolonging the life of the machinery. It also helps prevent scenarios that could compromise the safety of the passengers and crew. Proper adherence to these operational standards is essential for effective train management and safety protocols.