From the factory, we always set the doors to have a hold open position at 90 degrees. That door will stay right there if I leave it like that. To adjust that degree, you either tighten or loosen this nut with this tool provided. So that nut goes right there, and you either tighten or loosen that nut, and the door will be allowed to swing farther open or not quite so far open.
Okay, so now I’m going to talk about how to adjust the door closer for a soft stop. And a soft stop is what prevents damage to the doors and the hardware. What we want to avoid is a door that’s allowed to gather the wind, swing freely 90 degrees, and then suddenly stop. So to prevent that there’s an adjustment called “backcheck.” The backcheck adjustment is either on the bottom or the top of the closure, depending on if it’s on the right or left hand. It’s clearly marked right here on the arm; there’s an “R” here. On a right-hand arm, the adjustment’s on top. So in line with this hole, there’s a hole on top, and you would drop the allen wrench down into that hole, tighten it a few turns, maybe all the way tight, and if that’s done, the door will have more cushioning effect as it opens. So, now that I’ve adjusted it, when the door opens, it goes to about seventy degrees, and the rest of it is cushioned; it takes an effort to push it the rest of the way. It goes to the full 90 degrees and locks and holds there.
An industrial door closer, when properly adjusted can extend the life of your building and prevent damage. So we urge you to check these out from time to time and make sure they’re properly adjusted. Remember, if it was built by Shelter Works, it was built for life.