Fire Door Closers Adjustment

Door closer adjustment is an art that requires knowledge patience and an ability to climb up and down a ladder several times but with these attributes and the appropriate wrench hex key or screwdriver you can do it yourself.
Fire door closers adjustment. Look at the end of the cylinder closest to the bracket with the door closed to see the adjustment screw. How to adjust a commercial door closer. Clockwise gives the closer more closing power which also makes the door harder to open and turning the screw counter clockwise will give the door less closing strength and makes the door easier to open. It is used to adjust the spring strength force to close the door.
Almost all door closers will have the above two adjustment hydraulic valves but some have additional features which can be adjusted similarly. Spring adjustment is located on the end of the spring tube 5 32 allen wrench. The back check valve if featured will usually be set apart from the first two discussed and may be marked with a b or bc.