device not fully latching

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Number of reasons could Von Duprin 55 or 88 series cross bar to sag. Attached are the reasons that could cause the cross bar to sag or not lift. The hinge case spring lifts both lever arms and t...
The following list explains the differences between the Von Duprin 47 and 48 latch assemblies. The 47 top and bottom latches have 5/8" throw latchbolts. The 48 top and bottom latches have 3/4" ...
Installation should be 6" from bottom of the door. See attached templates as reference.  T-5494 for HM Doors W-5494 for Wood Doors
- AD Series and CO series products require that the Night Latch (NL) screw is installed in the exit device.  Be sure this screw is installed- Exit hardware and strike must be properly mounted ...
Followings could cause the Chexit device to go into alarm after the rearm time: Chexit devices shipped after 8-24-2015 with motor driven: Module DPS LED is ON DPS switch contact is open: Close t...
Chexit devices shipped prior to 8-24-2015 with solenoid driven: Chexit device has a RX switch with a connector that needs to be connected to the Chexit module otherwise the alarm will sound af...
ALWAYS put the PIM400 in LINK mode first. On a PIM400-TD2 press the LINK1 Button for door one, and LINK2 button for door 2. With a PIM400-485 you must use the SUS/HHD to select which door to LINK.  
1. To put the AD400 in LINK mode, hold down the RTE (Lever or crash bar see below) and press the # key on the key board, or present a card to the reader.            Why press the # key? Because t...
2. AD400 requires a Request To Exit (RTX) signal to link - see the user guide instructions for the linking process.  For an AD400 to enter link mode, it must see the RTX (Request To Exit) switc...
   3. Check the AA battery level, if the AA batteries are below 4.7 volts the AD400 can fail to LINK.             Install fresh batteries, with a level of 6.0 volts or better.  
4. PIM400/AD400 COM400 plug could be damaged! The small pins in the Main PCB board connection for the RF COMM board can get bent during installation of the RF COM400 board. If the PINs are bent a...
Apartment Corridor Lock function is defined as a lock where the latch bolt operated by lever from either side, except when outside lever is made inoperative by a stop or mechanical means other than...