What is the arm on top of a door called?

The “arm” (tail) rests against the door, and a spring that is twisted by the user opening the door closes the door by returning to its pre-twisted shape. This type of door closer is referred to as a “tail” spring and is one of the more simple mechanisms, having no damping control.

How does a hold open arm work on a door closer?

Friction hold open arms allow the door to be placed in the hold-open position automatically until the user puts force on the door to disengage the friction hold and cause the door to close. A friction hold open arm, in most cases, can be used with the standard template and would be a simple replacement.

What is the backcheck on a door closer?

The back check is the first control that will engage in a door closer. When a door is opened, the door closer back check control will slow the door down prior to making contact with a door stop or the fully opened position. For example, an exterior door may be opened on a windy day and the wind will push the door open.

How do you make a door less heavy?

How to Adjust the Door Closer

1. Measure door opening force and closing speed. The best way to measure the door opening force is by using a door force (pressure) gauge.
2. Adjust the latch or swing speed. Use a 1/8-inch Allen wrench or screwdriver in the appropriate screw.
3. Further adjustments. To achieve the 5 lbs.

What is backcheck on a door closer?

Back Check The back check is the first control that will engage in a door closer. When a door is opened, the door closer back check control will slow the door down prior to making contact with a door stop or the fully opened position.

What is a jamb closer?

Description. Concealed Jamb Door Closer – is a concealed door closer that comes in two finishes: nickel lated and electro brass plated and meets the Regulations for EN1154 and EN1634 Fire Test and is suitable for any application.

What is a surface mounted closer?

Surface mounted closers are the most popular closers in today’s market. They are mounted on the surface of the door or frame, on the push or pull side of the door, depending on the arm that is used with the closer.

What is a non hold open door closer?

A non hold-open closer does not keep the door open. Once it is opened past the 110 degree point it will commence the closing action of the door. A hold open closer is designed to hold the door open when the door is opened past 110 degrees.

What is hold open function?

They disable the self-closing function of a fire protection door in a controlled way. This means that they keep fire protection doors open, but automatically release them in the event of a fire so that door closers can do their job.

What is the best door closer for commercial doors?

In fact, the Commando door closer is certified Grade 1 by ANSI/BHMA, meaning it has been tested for over 2 million door cycles, the highest grade possible for a door closer. The Commando door closer is ideal for any commercial door type including hollow metal steel doors, commercial wood doors, and storefront aluminum doors.

Can I add a hold open arm to the door closer?

This option allows you to add a hold open arm to the door closer. A hold open arm is an adjustable arm that allows the user to set the door to a hold open position. For more shipping information please see click here .

Are Commando door closers any good?

This results in the Commando door closer outlasting other door closer brands. In fact, the Commando door closer is certified Grade 1 by ANSI/BHMA, meaning it has been tested for over 2 million door cycles, the highest grade possible for a door closer.