LCN erroe codes

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The date is a 4 digit #. The first 2 numbers indicate the week it was made, and the last 2 numbers indicate what year it was made. On most surface mounted closers, the model #,  date code, ...
An error - E04 - is an indication of a constant activation input from either the "Hold Open" switch or a "Wall Activation" switch when the 4600 power is turned on. This condition also occurs when l...
Here is an updated list of errors shown on keypad display of the Senior Swing control: Er04 - Voltage Monitor was high during Opening hardware check. Er05 - Master or slave CPU has oscillator ...
The Falcon SC71 is an exact replacement for the Norton 7500. The LCN 1460 or 4040 Series closers could be used, the mounting hole pattern is different.
The LCN 6030 is a Double Acting (or dual action) closer. Requires a "Cased Open Frame" - that means no stops formed in the frame.
The 7253 is the Ives pivot set that replaced the LCN CP150.  
The only spring size available is a size 4 (2314ME, 4314ME, 4414ME) which has a stronger spring to help insure that the door will close in a fire situation.