adjusting pot type closers.

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LCN does not supply Allen wrenches, the size that LCN uses, are standard sizes that every installer will have in their tool kit. 3/32" Allen wrench for adjusting regulation valves: main speed, lat...
The LCN "Traditional" series closer line was discontinued in 1980.  
The hold open position on a "REG" or "EDA"  hold open arm is set with the door to a few degrees shy of the desired hold open point. To properly set, open the door 5° less then the desired hold open...
 The correct method (process) for setting the hold open is: The 4010 hold open arms are handed, verify correct hand arm. (R or L stamped on main arm) Loosen the hold open nut. Opened the door ...
The 4010 door closer is handed and they are not field reversible.
4810 series is a Top Jamb Pull Side application. 4820 series is a Top Jamb Push Side application. 4840 series is a Parallel Arm Push Side application.
The 4840 and the 4810 are they only cylinders that can be interchanged, they use the same cylinder for their individual applications.
The regulation valves are designed to adjust the flow the hydraulic fluid in the closer which regulates the door closing speed through various phases of the closing cycle. The regulation valves h...
How to:  What are the steps to adjust a door closer?Facts: All LCN and FALCON door closers will have 3 regulating valves and a spring adjustment.  All closers with a "Delay" feature ...
There are a few things that can cause a closer to slam. The closer could be adjusted incorrectly. Turn all regulating screws clockwise until they stop. Then open each valve 1 and 1/2 turns. If t...
120V Models: The hold open force on the 2310ME / 4310ME / 4410ME closers is "NOT" adjustable. 24V Models: There is a trimpot adjustment on the circuit board that allows you to "REDUCE" the hold op...