In most cases, the electric door is used on the fire door, because it can have an automatic door closing and can be connected with the fire protection system. Usually, it does not use electricity, but it can make the fire door stay, open and close at any time within the range of 0-180 degrees. In case of fire, the energy storage mechanism (DC24v) is released under control to generate torque, automatically close the door leaf, and automatically restore the (0.1S) power off state to give feedback signal. Under the condition that the door has not been reset after release, it can also realize the function of non positioning door closer, so that the fire door can become a movable fire door. Manual reset is required after the alarm is cleared, and the door can be kept normally open after reset.
The fire door frame for installing the electric door closer shall be specially made. The beam of the door frame shall be widened. There must be 55mm installation space on the beam. The door frame and leaf shall be equipped with stiffening plates. The size of the installation position shall be strict. The electric door closer is divided into two specifications: left and right opening.