What is HEDA arm function ?

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Yes, as long as you stay with the like style arm.  Example: replace an RW/PA with HW/PA, replace an EDA with HEDA, or replace a CUSH with HCUSH.
Cam Lift hinges can only be used with LCN door closers that have a "Regular" style arm.     Manual Closers: Maximum lift dimension is 3/4". Can not be use EDA, CUSH, or Track Arm door closers...
It would be unnecessary to use the CNS/Cush arm and the Glynn Johnson overhead devices in the same application, both mechanisms stop the door.
The 1370 series closer was discontinued on Oct. 4th, 2008The 1260 closer hole pattern is 9-1/16" x 3/4", which is NOT the same hole pattern as the 1370 closer. The 1260-18QF plate does have the s...
ST-3195 is used to obtain the old style EDA or Cush arms which were assembled with threaded studs so that you could take apart the arm assemblies. Our current standard EDA and Cush arms are rivet...
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...
EDA ARM - The EDA arm is a heavy duty parallel arm mount.  The degree of door opening is determined by the template used for mounting. EDA arm closers can only be mounted as a Push Side parallel ar...
The 1260, 1460, and 4030 regular arm closers on the pullside will allow 180° door opening and can be held open at 180°, frame and trim permitting.
This can only be done with universal, non-handed closers:  1250, 1260, 1450, 1460, 4030, 4040XP, and 4050.You would need an xxxx-62PA shoe to adapt from regular arm to parallel arm mount&...
The Rw/PA arm is simply a regular arm that is packed with a 62PA (parallel arm) shoe, which will allow a (Tri-Pack) closer to be mounted in a regular, top jamb, or parallel arm application.
The 1260 regular (REG) arm is the same as the obsolete 1070 regular (REG) arm.
If arm screw is not gripping the forearm tube enough to securely hold the rod and shoe in place: If the allen head on the arm screw (-83) is stripped out, try using a wrench to tighten it. Try ...
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...
 Pneumatic Automatic Operators are used in areas where electrically operated devices are not convenient or permitted.  Consists of a modified, heavy-duty door closer for manual oper...