What is DA adjustment

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This condition (toed in or toed out jambs) is usually not found until the door is installed. Frames which have toed in or toed out jambs have been installed out of tolerance. It is the resp...
The standard door range for an AL lock is 1 3/8" to 1 7/8".  Using the supplied instruction sheet, align the springcage post to desired door thickness by adjusting the outside castle nut. See inst...
With the SUS connected to the AD400, in the EDIT tab there are radio communication settings "FIRST/DELAY/RETRY." FIRST - Is the first delay after the initial transmission of credential data, befor...
AD400 factory default settings when shipped are FIRST = 300 (m sec), DELAY = 200 (m sec) and RETRY = 5  
To change FIRST/DELAY/RETRY connect and couple the SUS/HHD to the AD400 and find under the EDIT tab the FIRST/DELAY/RETRY settings. See notes Or connect the SUS/HHD t...
LCN started putting on the green dials for the spring adjustment on the 4041's in 2001.
Try the steps below to improve the hold open adjustment. Remove hold open nut  Apply a couple drops of blue loctite to the threads. Re-assemble, and reset hold open. Let loctite set up overn...
No, LCN does not have an electronic hold open closer (SE/ME Series) that will provide a solid 180° hold open position. The 3130SE has an adjustable hold open position from 85° to 110° maximum. ...
Closers mounted according to LCN installation instructions require no periodic maintenance or seasonal adjustments.  Monthly, quarterly, and annual visual inspections are recommended for Fire/...
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...
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 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 ...
Regular LCN closers have "3" regulating valves for General Speed, Latch Speed, and Backcheck. If the LCN closer has "4" regulating valves, then the closer has the Delayed Action feature. De...
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 ...
Out of plumb (also referred to as twisted) frames usually cannot be adjusted. "Out of Plumb or Twisted frames (or jambs)" is a condition created by improper wall construction and/or improper insta...
It is the responsibility of the installing contractor to install all material in accordance with SDI or HMMA installation standards and tolerances. Out of square frames which are installed out of t...