What is a "bypass switch" used for in elevator systems?

A bypass switch in elevator systems is specifically designed to enable the elevator to bypass standard control functions, which is essential for testing and maintenance purposes. When activated, this switch allows technicians to perform necessary checks and repairs without the elevator responding to normal operating controls or safety interlocks that are typically engaged during regular service. This feature is crucial in ensuring that service personnel can safely diagnose issues or conduct tests without the risk of the elevator unintentionally moving or activating safety systems that might complicate the maintenance process.

The ability to circumvent standard controls helps in effectively isolating the system from operational parameters, making it easier for technicians to ensure that everything is functioning correctly before returning the elevator to service.