When a candidate activates the 2642 key during an on-site test, what is the expected outcome?

When a candidate activates the 2642 key during an on-site test, the expected outcome is to activate the elevator's phase 1 recall. This function is crucial for fire safety procedures, as it ensures that elevators return to designated floors and are taken out of service during a fire emergency. This prevents elevators from being used as a means of evacuation, which could lead to dangerous situations if elevators were to stop between floors or open at a floor that is affected by fire.

Phase 1 recall specifically refers to the process where the fire alarm system automatically recalls elevators to the ground floor or another safe location, allowing the building's occupants to evacuate more safely and preventing the elevators from being directed to floors where smoke or flames are present. Understanding this function is vital for anyone involved in fire safety management or emergency response scenarios.