Manual Operation:
In case of loss of power, manual operation shall be less than 50 lbs to open per UL 325
29.3. This is accomplished by engaging a flexible shaft into the rear shaft of the motor via a
remote control cable. A lever arm, which activates the remote control cable, and a 7”
diameter hand wheel, which is connected to the flexible shaft, are contained in a NEMA 1
box. Approximate opening time, while manually operating the hand wheel, is about 2.5
minutes. Important
: the flexible shaft shall not be engaged to the motor unless power
to the operator has been interrupted.
Battery Backup (standard):
When power is interrupted, and if the door is in any position other than fully open, the
battery backup will be activated and provide low voltage DC power directly to the motor.
The system is designed to open the door once for each power interruption at a constant
speed. This system is not designed to open and close the door repeatedly. A float
charger is included to provide a constant charge on the battery. These components are
installed in a NEMA 1 box with a test switch that will interrupt power and allow for testing the
system. Also included is an end of travel limit switch, which must be installed so that it
disconnects power to the motor when the door is fully open. (this limit switch is only for use
in battery backup mode and not for normal operation).
This is a redundant system and does not replace or substitute any requirements of UL 325
section 29.3 Interruption of Power for manual operation.
Assure used batteries are disposed of at the appropriate drop off center.
