How do you adjust LCN door closers?
To adjust Main Speed, turn regulating screw clockwise to decrease or counter-clockwise to increase. To adjust Latch Speed, turn regulating screw clockwise to decrease or counter-clockwise to increase. 2b Backcheck: This control hydraulically dampens the opening speed of doors.
How do you adjust a door closer to open it easier?
For closers with a two-hole shoe, you can move the adjustable arm closer to the hinge side of the door, increasing the power up to 15%. With a closer with a three-hole shoe, you can increase the power up to 7.5% by moving the arm from the center position to the hinge side of the door.
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.
What is spring power on a door closer?
Door closer spring tension, or commonly known as spring power, refers to the compression of the internal spring inside of the door closer body. As the door opens, the internal spring compresses, essentially storing energy. As the door closes, the spring decompresses or unloads forcing the door closed.
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.
Why is my door closer so hard to open?
Another reason the door closer might make the door hard to open is that it is installed incorrectly. For example, if the arm were attached to the spindle in the wrong position, or if the closer was installed in the wrong location, it might make the door hard to open.
How many valve adjustments are on an LCN door closer?
There are up to 4 valve adjustments on an LCN door closer. This controls the speed of the door in the last few inches before the door is in the full open position. This controls the speed of the door as it closes.
What is a 4040xp closer?
The 4040XP Series is LCN’s most durable surface-mounted heavy-duty closer, designed for the most demanding high-use-and-abuse applications. It meets ANSI/BHMA A156.4 Grade 1 standards and ADA reduced opening force requirements.
What is the most durable LCN surface mounted closer?
This heavy-duty closer is LCN’s most durable surface-mounted closer, designed for the most demanding applications. The 4040XP Series is LCN’s most durable surface-mounted heavy-duty closer, designed for the most demanding high-use-and-abuse applications.
How do you adjust the valves on a LCN 60 second?
LCN 60 Second Adjustment Tips! 1. Only adjust the valves 1/8 of a turn at a time. 2. Never fully close or fully open the adjustment valves, as it will cause the door closer to hydraulic fluid and damage it. 3. If you are still unsure contact the manufacturer LCN. 4.