The first two steps in solving either problem is to 1 identify the door closer and 2 get the installation instructions for your particular make and model of door closer.
Norton door closer adjustment instructions.
To adjust a typical closer.
If you find that the spring tension is adjustable you can probably adjust the closer so that the door is easier to open.
Closers shall have adjustable backcheck cushioning controlled by a hex key adjusted valve.
After doing some research i found that most door closers have a few ways to adjust them including a swing how fast the main swing is and a latch how fast it closes at the end.
Electrified products installation instructions.
Old norton door closer adjustment i had a door that was slamming harder than i would like so i decided to look into how to stop it from closing so fast.
Closers shall have multi size spring power adjustment to permit setting of spring from 1 through 4 or 3 through 6.
All norton door closers and door controls are supplied with instructions that show the correct mounting position for the closer and arm in relation to the door frame and hinges or offset pivots for a variety of door openings.
Adjust in this order.
Norton door controls continuously develops cutting edge door control solutions for swing door applications.
Norton s dynamic portfolio of mechanical door closers and electronic door operators will allow your building to be outfitted with code compliant solutions tailored to your occupant s needs.
160 series door closer.
Door closers installation instructions.
Sweep speed and power adjust if necessary applicable.
Norton door closers installation instructions from the 160 series to the 9540 series.
Door closers installation instructions.
Adjust a little at a time try a 1 4 turn to start open the door between adjustments to check the difference.