a, 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.
The third usage, the vertical door closer (built-in vertical door closer) is erect invisible on the side of the side of the door leaf shaft. No screws or parts can be seen from the outside. It can be integrated with the door and can be opened and closed in a single direction. Construction is simple.
b. Installation steps of the door closer:
Usually, the instruction manual provided with the door closer has a mounting template, so read the manual first, and determine the installation position according to the opening direction, the size of the closing force, and the installation dimensions between the door closer body, the connecting seat and the door hinge.
2) According to the size of the closing force, the closing force can be changed by inverting the connecting seat by 180° or changing the connection position between the connecting rod and the connecting seat. The greater the distance between the connecting rod and the center line of the door hinge, the smaller the closing force of the door closer, and vice versa.
3) According to the position indication on the installation template, determine the position of the mounting screws, then drill and tap.
4) Install the door closer body with screws.
5) Install the fixed connector.
6) Install the engine board with screws.
7) Adjust the adjustment lever to 90° to the door frame, and then connect the connecting rod to the drive plate.
8) Don't forget to install a plastic cover that can be used to catch the hydraulic oil leaking from the door closer.
9) After installation, check whether the fixing screws are tight and there is no looseness or weakness. Open the door to the maximum door opening position and check if the hinged arm of the door closer touches or rubs against the door or door frame.
Closed door closing speed
10) Adjust the closing speed of the door closer as needed. Usually the door closer has 2 speed control (throttle spool) screws. The upper adjustment screw is the first closing speed adjustment screw, and the lower adjustment screw is the second section (usually 10º) closing speed adjustment screw.