Pneumatic door closers control the speed at which your door closes.Periodic adjustments are required to ensure that the door closes at the correct speed.If you have a screwdriver, you can easily adjust the pneumatic cylinder to change the swing speed or realign the cylinder and brackets to make the door hard to open.If your door still doesn't work the way you want it to, then you will need to replace it.
Step 1: The tension adjustment screw is located at the end of the pneumatic cylinder.
A pneumatic cylinder, which controls the door's speed, is one of the components of a door closer.To see the adjustment screw, look at the end of the cylinder, which has the door closed.The cylinder closes the door slower if the adjustment screw is loosened.Some door closers have more than one screw.
Step 2: If you can't find the adjustment screw, take the cover off the door.
The cylinder and brackets are covered in a case by some door closers.If you don't see the adjustment screw while the cover is on, you need to remove it.The covers can be pried off gently if they're held close to the door.The covers aren't meant to be removed.There is an adjustment screw that is visible on the outside of the cover.If you don't know which screw is the adjustment screw, you will have to loosen or tighten the screws one at a time, then close the door to test it.
Step 3: The door will close slower if the screw is turned clockwise.
If the door is closing too fast, use a screwdriver to tighten the adjustment screw.The pneumatic cylinder speed will be changed to slow the door down.Minor adjustments will be made until you're happy with how the door closes.If you want to see how fast the door closes, open it and let it close.Minor adjustments must be made until the door closes.
Step 4: To make the door close faster, turn the screw clockwise.
If your door is closing slowly, loosen the adjustment screw with a screwdriver.The speed of the pneumatic cylinder will be adjusted.The cylinder could leak pneumatic fluid if the adjustment screw is not completely removed.
Step 5: Press up on the pin that holds the cylinder to remove it.
Find the pin that holds the pneumatic cylinder in the door.If you want to release the cylinder, slide it up and out.A pneumatic cylinder, which controls the swing speed of the door, is connected to a bracket by a door closer.You can find the pin you need to remove by looking at the arm of the cylinder.Most door closers have a few different holes that you can use to adjust the closing pressure.
Step 6: The doorlatch can be made by putting the pin in the hole furthest away from the cylinder.
Align the holes on the arm of the cylinder.To make the door harder to open, put the pin back in to hold the cylinder and the brackets together.If there is not enough pressure in the last few inches when the door closes, it won'tlatch all the way.The door willlatch firmly if the cylinder is connected closer to the brackets.You will need to adjust the position of the brackets on the door if the cylinder is already attached through the hole furthest away from it.
Step 7: If moving the pin doesn't work, change the position of the brackets.
Remove the screws that hold the door in place.If you want to create more closing pressure, close the cylinder further away from the door handle.If you want to make adjustments without removing the screws, you can slide the door closer brackets left to right.If you don't get any of the adjustments to work, you will need to buy a new door closer.You can screw the new one back into the same position if you look for a similar model.