Adjusting The Closer
For the purpose of this installation, the spring power was sufficient to close the door. The following procedure is followed to adjust the closer. Start with the closing (sweep) valve. The closing valve controls the speed that the door closes from the fully open position to approximately 20 degrees. A decision was made that the closing speed should be approximately six to seven seconds. Turning the closing valve clockwise slows the closing speed. Turning the closing valve counterclockwise increases the closing speed.
The latching valve controls the speed that the door closes and latches. The latch range was adjusted to about two to three seconds. Turning the latching valve clockwise slows the latching speed. Turning the latching valve counterclockwise increases the latching speed.
There are two backcheck adjustments, the backcheck location valve and the backcheck intensity valve. The backcheck location valve, an on-off valve sets the location of the backcheck. In the off position, the backcheck starts at an earlier position. In the on position, the door can be opened further. For our installation, the backcheck location valve in the off position permits the door to be opened from 65 to 70 degrees. With the valve open, the door can be opened from 95 to 100 degrees. For this installation, the floor stop on the landing is at approximately 95 degrees.
The backcheck intensity adjustment limits opening force by slowing down the intensity at which the door can be opened. Turning the backcheck intensity valve counterclockwise reduces the amount of backcheck. Turning the backcheck clockwise increases the amount of backcheck. Too much backcheck can cause a sudden stop. The proper adjustment is a smooth slowing of the door.
IMPORTANT: The backcheck must never be used in place of a door stop. Over time, using the backcheck as a door stop will result in the closer mounting screws becoming loose and door closer mal-functioning.
Test the operation of the door closer.
Write the date of installation onto the body of the door closer using a permanent marker. This way, if the closer malfunctions, you will know whether the unit is still under the warranty.
Once all of the adjustments have been made and the door closes properly, install the cover onto the closer using two 6-32 x1/4” Phillips head screws.
Corbin Russwin DC6200 Series door closers are available in painted or plated finishes. There are a number of available arm configurations including hold open and heavy duty. For high vandalism applications, these door closers are available with security screws.