How is a spring switch tested?

To test a spring switch, the process involves physically lining it over and back by hand. This method ensures that the switch operates smoothly and correctly in both positions, verifying the spring mechanism's functionality. Manually operating the switch allows the inspector to detect any resistances or irregularities in its movement, enabling a thorough assessment of its operational integrity.

In practice, while remote control devices and visual inspections play roles in maintenance, they don't provide the same level of hands-on confirmation that manual operation does. Additionally, leaving the switch in position for an extended period, such as 24 hours, does not test the functionality of the switch itself—it merely observes whether it can hold position without external influence. This hands-on approach is essential for maintaining safety and efficiency in railroad operations, making it the most reliable method to test a spring switch.