Making an adjustment to a commercial door closer if you find that there is oil in the cover or oil on or leaking from the closer body stop right there you need a new.
Overhead door closer adjustment.
Locate the back check valve on the bottom of the closer between the arm and the door jamb.
Door closers usually come with two types of cover.
Storm doors have a connecting pin that can be set into two separate slots to change the tension on the door.
To adjust the door closer.
Now that you have the cover off you should be able to see the adjustment screws.
If there is just one screw on your door closer turn it clockwise to increase the speed with which the door closes.
If you find that there is oil in the cover.
Climb the ladder and examine the closer.
Bring a step ladder tall enough so that you can easily reach the door closer from the second or third highest step.
105 back stop with hold open 105 back stop no hold open 90 back stop with hold open 90 back stop no hold open suitable for both center hung double or single acting and offset doors.
For utmost protection the door closer is certainly going to have a cover over it.
The valve is an allen head screw.
Adjustable spring power overhead concealed closer built in positive back stop and hold open positions available.
They should be marked on the closer.
Some manufacturers include fastening straps so that the cover stays in its place all the time regardless of the situation it s going through.