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.
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...
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, ...