What is the primary function of phase 2 fire service in elevators?

The primary function of phase 2 fire service in elevators is to allow firefighters to control the elevator. This feature is critical during emergency situations, particularly fires, where traditional elevator operation would be unsafe. When phase 2 is activated, the elevator directly takes commands from firefighters who have specific training to manage elevator use during these emergencies.

This mode ensures that the elevator does not operate in an automatic fashion, which could put both the emergency responders and trapped passengers at risk. Instead, it allows firefighters to manually direct the elevator to specific floors as needed and ensures that they can effectively manage the situation without interference from other elevator call requests that would come in during an emergency.

By having firefighters in control, the system helps maintain a safe environment and facilitates the rescue of individuals from within the building or provides a means for firefighters to access different floors safely.