Next, we will install the surface-mount door closer. The LCN 1371 Quest door closer was chosen for this installation. It is non-handed and non-sized. These surface-mounted door closers are UL and ULC listed for self-closing doors without hold-open. They are certified under the ANSI Standard A156.4, Grade 1. The Quest Series closers meet the ADA reduced opening force requirements. The Quest Series 1371 closer accommodates ANSI sizes 1 through 5 and is designed for exterior doors to 42 inches wide and interior doors to 54 inches wide.
The Quest 1371 door closers use a mounting bracket to simplify the installation procedure. Self-drilling and self-tapping screws can eliminate the need for pilot holes in aluminum storefront doors. Stick-on templates help to locate the closer and arm for most of the installation options.
For this installation, the LCN Quest door closer had to be mounted on the push side (interior) of the door using the top-mount configuration. This was necessary as the door was equipped with a door stop whose bracket would have obstructed a parallel arm installation. The only other alternative was to mount the closer on the exterior side of the door. The decision was made that the closer had to be installed onto the interior side of the door.
IMPORTANT: Always check the operation of the door to be certain it will swing open and closed smoothly. If not, make adjustments or repairs as necessary.
Step 1. Separate the two parts of the Top-Mount template and attach the parts onto the door and header. Make certain the template is aligned the bottom and the edge of the header.
Step 2. Attach the shoe portion of the template aligning the top and edge of the door.
Step 3. Use a punch to mark the six locations for the mounting screws.
Note: For this installation, the locksmiths not only marked the center of the hole, but also marked the top, bottom, left and right side of the hole. This five-punch pattern insures that the mark for the hole is easily visible.
Step 4. Use a drill/driver to install the four self-drilling and self-tapping screws to secure the mounting bracket to the header.
Step 5. Attach the closer body to the mounting bracket and secure using the 5/32” hex wrench.
Step 6. Install the two self-drilling and self-tapping screws to secure the rod and shoe to the door.
Step 7. Preload the closer. Rotating the spindle ninety degrees moves the end point of the spindle rotation ninety degrees beyond the stopping point for the arm and the closing of the door.
Step 8. Attach the arm to the closer and insert the rod into the tube. Secure the arm using the Phillips head screw.
Step 9. Position the shoe arm perpendicular to the header.
Step 10. In this position, secure the shoe arm into the tube using the provided bolt using a 7/16” wrench. Test the operation of the door and closer.
The next series of steps is to adjust the door closer controls. For this installation, the LCN Quest 1371 door closer was equipped with: main speed adjustment, backcheck adjustment, latch speed adjustment and spring power
Step 11. Begin with the main speed adjustment. The main speed adjustment controls the closer movement of the door through the open position to about 15 degrees from the closed position. The main speed should be approximately seven to nine seconds. This time allows most persons to get beyond the door without being contacted by the door.
If the door does not swing towards closed with enough momentum, it may be necessary to increase spring power. If there is too much momentum, spring power should be decreased. The default spring power is approximately a three.
Every time there is an adjustment, it is important to test the operation of the door several times, making
Step 12. Adjust the backcheck. The door closer backcheck is designed to slow the opening speed and force before the door is completely open. However, a door closer equipped with backcheck cannot take the place of the physical stop. Using a door closer equipped with backcheck can improve the life expectancy of the closer as well as the life expectancy of the hinges/pivots and improve the door operation. Test the operation of the door.
Step 13. Adjust the latch speed. The latch speed, which latches and closes the door, should take approximately three seconds. There should be sufficient force to close and latch the door without slamming.
Corbin Russwin DC6000 Series door closers incorporate new features.
The LCN 4040XP is the second generation heavy duty door closer designed to withstand even more rigorous applications.