Checking train brakes involves reducing main air line pressure by temporarily opening line at one wagon to apply brakes, detecting pressure drop to initiate pressure increase to release brakes

摘要

The method involves activating the brakes by reducing main air line pressure, checking brake operation on each wagon, increasing pressure to release the brakes and checking brake release on each wagon. During testing the train is secured by applying another brake and a traction lock. The pressure is reduced by temporarily opening the line at one wagon, the pressure drop is detected and a controller causes a pressure increase to release the brakes. The method involves activating the brakes by reducing the pressure in the main air line (2), checking on each wagon whether the brakes work, increasing the pressure in the main air line to release the brakes and checking on each wagon whether the brakes are actually released. During the brake test the train is secured by applying another brake (11) and activating a traction lock. The pressure is reduced by temporarily opening the line at one wagon, the pressure drop is detected and a controller (10) causes a pressure increase to release the brakes. An Independent claim is also included for an arrangement for checking train brakes.