Fire doors are generally installed at the safety access port. There is a normally closed fire-proof swing door. This type of fire door requires fire-fighting doors to be installed.
The role of the door closer: the door closer is the name behind closed doors. That is, when the fire broke out, the fire door automatically closed after the door was opened.
How to install the door closer:
The most commonly used door closers are exterior door closers, which are installed as follows:
The most common standard usage is when the door closer is mounted to the hinge side and the door is open. When so mounted, the arms of the door closer protrude outwardly, approximately 90° to the door frame.
In the second usage, the door closer is mounted on the opposite side of the hinge from the side of the hinge. Usually an additional bracket provided with the door closer is mounted to the arm parallel to the door frame. This type of usage is usually used on exterior doors that are unwilling to install the door closers outside the building.
The door closer body is in turn mounted to the door frame instead of the door, and the door closer is on the opposite side of the door hinge. This usage can also be used for exterior doors that open outwards, especially with only a narrow upper edge, and without sufficient space to accommodate those doors of the door closer body.
How the door closer works:
1) Whether there is an automatic door stop function after opening the door;
2) Damping buffer function - Damping buffer is generated after quick opening to a certain position, and the damping buffer force and range can be adjusted according to the use requirements; this function is used to prevent the door or lock from colliding with the wall when the door is opened quickly, or emergency escape It prevents people from losing weight when they open the door quickly and tilts forward to the ground.
3) Delayed slow closing - the door is closed slowly from the maximum position of the door, and can be adjusted steplessly according to requirements. It is suitable for use in places where people enter and exit frequently and in many places, especially in hospitals, and there are doors and passages for the elderly, children and disabled people.
4) The closing force can be adjusted - it can be installed on different doors with a wide range of door weights and door widths, as well as places with high door closing resistance due to environmental reasons. Festive stepless adjustment can achieve satisfactory closing power, especially in places where coastal cities, vehicles and ships are affected by wind and the closing resistance (force of the door) changes frequently.
5) Use environment: Fire and fire protection requirements and anti-freeze requirements for locations at minus 35° in winter.
Usually, the choice of the door closer can be matched with the size and weight of different doors according to the manufacturer's product specification parameters, according to different strengths or adjustable forces. The table below shows the quality/size of the seven grade test doors specified in British Standard BS EN 1154 (a recognized standard for door closer classification). The closing force of the door closer usually specifies a value between 1 and 7, the greater the number, the greater the ability of the door closer.
Additional information:
In addition to installing the door closer on the fire door, if the fire door is to be installed with a sequencer, there is another type of device. It means that there must be a certain order in order to prevent the two doors of the fire door from closing, so as to prevent the fire door from being unmasked.
Concerned about surprises
Label: Fire door closer installation instructions
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