What are the parts of a door closer?
The parts that we carry for door closer arms include brackets, shoes, power tracks, studs, stud retaining rings, sliders and more. Arm brackets are one of the main arm related parts that we have in our inventory. In our selection of brackets, we have about eight unique styles of parallel arm brackets for door closers.
What is the backcheck on a door closer?
A backcheck feature set and adjusted by an independent valve. When introduced the backcheck stalls the opening of the door around 70 degrees. When doors are violently opened by pedestrians or wind, the backcheck feature reduces the likelihood of damage should contact be made with an adjacent wall or obstacle.
How do you adjust the opening force on a door closer?
Adjust the latch or swing speed Use a 1/8-inch Allen wrench or screwdriver in the appropriate screw. Turn clockwise to reduce speed, counterclockwise to increase the speed.
How much force is required to close a door?
Interior Doors – 5 pounds of force. Exterior Doors – 15 pounds of force – Massachusetts AAB 521 CMR only – the ADA and A117. 1 do not include a requirement for exterior doors. Sliding or Folding Doors – 5 pounds of force.
Where are LCN Closers made?
Princeton, Illinois
All closers shall be as manufactured by LCN CLOSERS, Princeton, Illinois, USA, and shall have the following features: 1. [Applies to 4010, 4020, 4040, 4110, 4210, 4510, 5010 Series only.]
How is the closing zone on a door closer controlled?
This closing zone is controlled via the latch speed valve. Note: A properly adjusted door closer latch speed should never slam the door closed causing stress on the door and frame. Q. What is a Hold Open or Hold Open Arm? A. Hold Open is the ability of the door closer to hold the door in the open position.
What do you call a door that closes both ways?
When used on doors that open both ways they are known as double action spring hinges. A manual door closer stores the energy used in the opening of the door in a spring, either a compression, torsion, tension, volute or leaf. and releases it to close the door.
What do you call a door closer in the header?
When door closers are mounted in the header they are known as transom closers. These can be HO (hold open) or NHO (none hold open). Door closers that are hidden in the header of the door frame (transom closers) are generally considered to be throw-a-way sealed units.
How is a door stop attached to a door frame?
Door stop moulding is attached to a door frame. It aligns the door panel within the frame and prevents the panel from swinging right through the opening.
What kind of door closers are used in commercial doors?
They can easily be replaced or added to nearly any commercial door. Overhead Concealed Door Closers Overhead concealed door closers, or often referred to as storefront door closers, are a type of hydraulic door closer that is mounted inside the door frame’s channel. Concealed door closers are very popular in storefront doors.
When door closers are mounted in the header they are known as transom closers. These can be HO (hold open) or NHO (none hold open). Door closers that are hidden in the header of the door frame (transom closers) are generally considered to be throw-a-way sealed units.
What makes up the closing cycle on a door closer?
The closing cycle is made up of three main door speeds: delayed action, closing speed, and latch speed. While the opening cycle only has one adjustable door speed known as backcheck. The closing speed valve is standard on all door closers and is sometime referred to as the main speed control.
Where is the body of a door closer located?
The aluminum cast body of the door closer is surface mounted to the door frame directly above the hinge side of the door and the door closer arm is attached to the door.