A Step By Step Guide On How To Install Or Replace A Storefront Door End Load Arm For An Overhead Concealed Closer
A storefront door concealed closer can use a variety of arm types ranging from side load, end load, or slide track. In this guide we explain how to replace or install an end load arm.
Step 1: Remove Old End Load Arm
Swing the door open. If the concealed closer is a hold open model, open the door and engage the hold open position. If the storefront concealed closer is not a hold open model, then swing the door open to the full open position and turn the closing speed clockwise until the door stays open.
Towards the top of the door on the pivot stile is a cut out on the door where the end load arm clamping block can be accessed. The clamping block is attached to the arm by two screws. Remove those screws and the clamping block, allowing the door to come off of the closer spindle. Next, remove the door from the bottom pivot. For help on removing the pivot please read our guide "How To Remove A Storefront Door From A Bottom Pivot". Set the door on it's side so the end load arm can be removed from the top of the door rail.
Step 2: Install New End Load Arm
Next, install the new end load arm into the door rail. If you purchased a Liberty Door Closer end load arm then the existing holes will line up. If this is a new installation, refer to the manufacturer's template to install the new end load arm in the proper location.
Step 3: Set Door Back In Place
Before setting the door back into place, the closer body should still be in either the hold open position, or for non-hold open models the closer should be in the full open position with the closing speed valve turned clockwise. If installed when the closer is not in the full open position, the door closer spring will not be under any tension, causing it to not work properly.
Set the door on the bottom pivot. Line up the top of the door so that the closer spindle mates with the door arm. Attach the new clamping block to the end load arm.
Step 4: Adjust Door Height and Sag
Allow the door to close. For hold open model door closers, disengage hold open and allow the door to close. For non-hold open models, slowly unscrew the closing speed valve 1/8 turn at a time until the door begins closing. Once the door is fully closed check the gap between the top of the door and the frame. There should be approximately 1/8" gap. To adjust the door higher or lower, the threaded bottom pivot can be screwed in or unscrewed. To do this the locking nut must be loosened, before the threaded nut can be adjusted. Once the height is properly set, the pivot locking nut can be tightened.
Next, check the door sag. The gap between the lock stile of the door and frame should be even all the way down the door. If not, at the bottom of the pivot stile of the door is a hole that exposes an adjustment screw in the bottom door shoe for the pivot. This adjustment screw adjusts the sag of the door. Screwing or unscrewing this will raise or lower the locking stile of the door. Adjust until the gap between the lock stile and frame are even all the way down.
Finally, check the centering of the door. The centering of the door refers to how the door sits in the frame. Ideally, the door is flush with the frame. The centering screws at the top of the arm control how far in or out the door sits in the frame. To bring the door in or out the centering screws on the end load arm can be unscrewed so that the screw heads are firmly pressed against the web of the door's top rail. Unscrewing one screw more than the other will bring the door in or out to a certain side. It is important not to overloosen the centering screws as that could put excess pressure on the web of the door causing it to deform or bulge.
Step 5: Check Operation
Swing the door open and closed, verifying it swings with no obstructions. Adjust the storefront concealed closer properly. For help on adjusting the door closer, please see our guide "How To Adjust A Storefront Concealed Door Closer."
This guide explains how to install, replace, or remove any end load arm for a storefront door concealed closer. If you are in need of a replacement end load arm or a new concealed storefront door closer, we recommend purchasing a Liberty concealed closer. Liberty concealed closers are designed to replace any storefront concealed closer and are extremely reliable. These grade 1 closers come in a variety of packages including an end load arm kit, side load arm kit, or slide arm kit. Shop today and receive FAST, FREE shipping!
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