Installing a door closer on a metal door is just

To install the door closer on a metal door, you need to know what functions it performs, and understand the principle of its operation. The door closer is a mechanism by which even a very large and heavy door closes smoothly and silently.

It is often installed on the doors of rooms with high traffic, in order to ensure their closing and, consequently, the preservation of heat inside the room. In addition, the door closers extend the service life of the locking devices.

Why do you need a closer

If you like to slam the door, you do not need this mechanism and will even interfere with expressing your feelings and “letting off steam”.

If increased emotionality is not peculiar to you, and you appreciate silence, comfort and convenience, then with the help of this simple device you can solve several problems at once:

• Eliminate the claps and noise from the closing door.
• Provide its automatic closing.
• Extend the life of the door unit itself and the door locks.

It can be argued that sometimes it becomes necessary for the door to remain open for some time and not to return to the closed position.

For example, if you need to bring large items into the house, bring in a baby or wheelchair. Therefore, it is advisable to install closers for metal doors with a hold-open function (lock function) at the entrance to a house or apartment.

It lies in the fact that if the door is opened at an angle of more than ninety degrees, it will not close spontaneously. When you decide to close the door, it will be enough just to push it to overcome this angle, and then the closer will work as expected.

Modern models of closers are installed not only on heavy metal entrance doors, but also on interior doors in any design - wooden, glass, plastic.

Read the same:

• Glass doors - types and possibilities of use
• Classification and types of interior doors, a short course

Door models that are equipped with an access control and control system are almost always equipped with closers that, without human intervention, ensure smooth door closing and precise locking devices. This has a beneficial effect on the performance of the control system.

Closer operation principle

The mechanism of the door closer is quite simple. To open the door, you have to make a certain effort to it. It is transmitted to the door closer and is accumulated in a compressed spring located in its housing and returning the door to its original position.

The spring of the closer is a basis of the hydromechanical device filled with special oil and concluded in the metal case. To ensure that the door closes smoothly, the principle of hydraulic damping is used, due to which the moment of force is transformed.

How to choose a door closer

Если вам нужно выбрать metal door closer, необходимо знать её размеры и вес. Исходя из этого, вы сможете подобрать нужный размер доводчика, пользуясь такой таблицей:

Here EN is the European Norms, and the numbers from 1 to 7 are the index that indicates the spring force, which is called the size of the closer.

Attention! If the parameters of your door are between the data in the table, choose a larger closer. This should be done in the event that the door height is greater than the standard.

By way of installation, there are the following types of door closers:

• Installation inside the door (carried out during its manufacture).
• Installation on the surface of the door and door frame.
• Assemble the vendor's half.

By cost, the closers are conditionally divided into three classes - premium, middle class and economy.

Closer Installation

If you insert a lock into a metal door is quite difficult, then even an inexperienced person will cope with the installation of the door closer in such cases.

A full-size template is usually included with each closer to help you assemble.

So:

1. Secure the template with tape on the inside of the door closer to the hinges and on the top of the box. A closing mechanism will be located on the canvas, and a lever on the upper frame.
2. With the help of a drill and a drill for metal make through the template marking all mounting holes, and then cut the thread.
3. Secure the door closer to the door so that the speed regulating valves face the hinges.
4. Separate the lever into two halves and screw the tab of the side lever to the door frame.
5. Put the main lever on the square shaft of the closer and secure it with the washer and screw.
6. Move the side lever to a position perpendicular to the door frame, and fasten it to the main lever.
7. Adjust the opening angle and closing speed of the door using a special hex key.
8. Install the cap on the bottom of the door closer.

Operation and maintenance of the door closer

The service life of the door closer depends on how you handle the door. You can not click on it to quickly close. And, on the contrary, you should not hold the closing door by your own efforts or by the objects inserted between the door and the jamb. This can lead to leakage of oil and damage to the whole mechanism, as a result of which the closer must be changed.

In order for the closer to serve properly, it is necessary to take care of it regularly, changing grease in the lever hinge every 2-3 years. If the door closer is installed on the front door outside, the lubricant must be changed annually.

At external installation of the closer, change of temperatures will be reflected in its work. Therefore, twice a year when changing season, it must be adjusted. If these conditions are met, a quality door closer will serve you flawlessly for many years.