qel and door cord

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Electrical hinges or a power transfer units are the most commonly used practices to run electric power to locks and/or strikes. Electric Hinges: Most electric hinges will fit into a standard 4 ...
For most exit devices, please refer to the specific device series catalog for minimum door opening width the device can be cut down to fit.Be aware that some device options, frame conditions, and s...
Use the PS902-2RS power supply with LCN auto operator on single door, PS904-2RS power supply on double door and PS904/906-2RS-2RS for 2 pair of QELA is required for basic operation with a...
  Pushing on the push  bar or activating the EL/QEL or the trim on Von Duprin XP98/99 exit device does not retract the latch, it releases the latch only. Door must be pushed or pulled when device o...
If a vertical rod device, verify the vertical rods are adjusted properly and there is not a bind at the strikes.  Make sure the push bar is not binding at the pushbar guides or any other ...