With the advent of adjustable spring closing force, choosing the “right” surface-mounted door closer for a specific door has become much easier. For example, a 3’0” by 7’0” interior door is a very common size for many commercial applications. Checking a closer catalog will usually...
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I used the included 1-3/4” through-bolts (sex nuts) to secure the door closer body using parallel arm mounting. I installed the optional friction hold open arm to accommodate occasional cart traffic.
I followed the provided instructions for the parallel arm installation, mounting the closer onto the push side of the door so the closer was visible only from the manufacturing side.
Four holes were located for the closer body onto the door and five holes were located for the parallel arm bracket onto the underside of the frame. The four closer body holes are drilled from the interior side beginning with a 1/8” diameter pilot bit. When I was certain the holes were in the proper positions on both sides of the door, I enlarged the four holes using a 9/32” diameter bit, large enough to accommodate the ¼ - 20 machine screws.
Once the holes have been drilled, I enlarged the four holes on the door face opposite the door closer using an 11/32” diameter bit. The smaller size bit provides a tighter fit for the through-bolts when installing the device onto a wood or particle board skin door. After installing the through-bolts, I mounted the closer body, securing the screws using thread locker. The thread locker was used to prevent the screws from unscrewing.
After marking the holes for the parallel arm bracket, I drilled 1/8” diameter pilot holes to ensure the wood screws would be centered within the parallel arm bracket holes. With the parallel arm bracket mounted, the next step is to attach the arm.
For this installation, a friction hold open arm was installed. The friction hold open arm works using a varying sloping thickness type of spacer that starts to contact the rotating arm surface as the door is opened. As the door opens further before completing the opening swing, the arm becomes trapped. The hold open arm keeps the door open as there is not enough closing force to enable the door to close. The amount of resistance is adjusted by turning the bolt. Tighter increases pressure and looser decreases pressure.
Arrow friction hold open arms come from the factory handed for a left hand (LH) door. To reverse the handing of the arm, the forearm screw is removed and the forearm is slid out, flipped over and inserted back into the sleeve. The forearm screw is re-installed in the same opening with the forearm at the same length.
Note: For a right hand door, the bolt is on the top of the arm when installed onto the parallel arm bracket.
The next step is to pre-load the door closer. This provides additional closing force by rotating the spindle to increase compression of the spring. Pre-loading this door closer requires rotating the spring approximately 30 degrees. Without pre-load, the door closer would not have sufficient closing force to close and latch the door.
Once the spindle is in the pre-load position, mount the arm assembly. Just thread the mounting screw in position to secure the arm onto the spindle. Secure the forearm onto the parallel arm bracket.
Open the door and allow the door closer to close and latch the door. Repeat this several times. If the closer does not close and latch the door, increase the spring force. If there is too much pressure, decrease the spring pressure. The installation sheet has spring force recommendations according to door width.
Adjust the sweep and the latch valve to have a smooth, quiet operation.
Adjust the backcheck to ensure the door does not slam into the wall as it is being opened. Remember the door closer backcheck is not designed to provide a physical stop. Whenever possible, use a dedicated door stop to prevent opening damage.
When the door closer is in adjustment, install the plastic cover by first removing the proper knockout. Install the cover using the provided two hex head screws.
Arrow DC500 Series door closers come with 1-3/4” through-bolts and a full plastic cover. Four configurations of drop plates, two standard and two heavy-duty arms, are available. The DC500 Series door closers have a 10-year limited warranty. They are available in Aluminum (689) and Dark bronze (690) finishes.
For more information, contact your local locksmith distributor or Arrow Lock & Door Hardware, P.O. Box 3075, Salem, VA 24153. Telephone: 800-839-3157. Web Site: www.arrowlock.com.
Determining exactly what the end-user needs and installing the best door closer with the appropriate arm and options will give your customer many years of trouble free operation.