Georgian deadbolt will not retract

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After rotating  the key to unlock the lock, you must return the key to its normal position to remove it. 
The L9466 Store/Utility Room lock can provide this functionality. Operation: Latchbolt retracted by knob/lever either side. Deadbolt thrown or retracted by key from either side. When the deadbolt ...
If your Von Duprin EL (solenoid) device pulls and releases quickly instead of holding the latch retracted, please check all of the items below.In most cases, one or more of these solutions will r...
The 98/99 rim and vertical rod exit devices are shipped with NL drive screw to function as a Night Latch. To convert the device to Class Room, remove the NL Drive Screw on 98/99 center case ass...
Bad dogging hook on the dogging assembly could cause the 33A/35A and 98/99 exit device latch bolt not to retract completely.
- 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 ...