What should the property do if the owner asks to turn on the fire escape fan?

The mechanical smoke prevention facilities in the fire escape are designed to maintain positive pressure in the stairwell and prevent smoke from entering in case of fire. The smoke control and extraction system adopts fire power supply, which is a part of the whole building fire control system. It can never be used as a daily ventilation facility, nor can it be opened and closed at will according to the owner's requirements.