What type of mode allows elevators to operate exclusively under emergency conditions?

Fireman’s mode is specifically designed to allow elevators to operate exclusively under emergency conditions, particularly during a fire or other emergency situations. This mode is crucial for ensuring the safe and effective evacuation of occupants and facilitating the movement of emergency personnel.

When an elevator is in Fireman’s mode, it bypasses normal call buttons and responds only to designated emergency controls, typically located in the fire command center or accessible to fire personnel. This ensures that the elevator can be used safely, directing movement to the ground floor and preventing unauthorized use that could compromise safety during an emergency event.

In contrast, normal mode allows regular elevator operation without restrictions, while standby mode is often used for maintenance or reduced service scenarios. Phase I service refers to a specific operational plan for elevators that allows them to return to a designated landing while normal operations are restricted during a fire, but it doesn’t provide the same level of control and safety as Fireman’s mode. Thus, Fireman’s mode is essential for ensuring public safety and efficient emergency response.