once deadbolt has been locked key cannot be removed

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We do not offer a true night latch, storeroom or ANSI "03" function with this device. (Entrance by trim when latchbolt is retracted by key. Key removable only when locked.) This function would da...
After rotating  the key to unlock the lock, you must return the key to its normal position to remove it. 
The lever may be missing the slot feature for the core locking lug.  Verify slot is in place.
The storeroom lock function is described as follows: Latch bolt operated by key from outside or by operating inside lever. Outside lever is always inoperative. The following are storeroom functi...
This is usually caused because the wrong tailpiece is being used on non-IC cylinders or the incorrect driver for IC options. Use the below descriptions to identify which they need.NON-IC: There are...
The AL53 and ND53 is not designed to be locked from the outside with a key. Key operation: When the button is pushed then the key will unlock the outside lever. When the button is pushed and...
Installers have reported that their AD-CO Series cylindrical or mortise locks will unlock whenever the outside lever is lifted.    This will occur if the outside spindle (square post) is install...
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 ...
A flat head screwdriver can be used or the 35-250 emergency key.
The JD YA6 tailpiece is intentionally designed such that the tailpiece cannot be installed at the same time as the cylinder.  Interchangeable cylinders assume that the lever and taipiece is in...
See the JD Yale Lever installation instruction HERE
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...
The Von Duprin 7500 mortise lock body ships in the NL mode.  Either the function of 7500 lock body has not been changed to the Classroom function or the NL Drive screw is not all the way down. Step...
  Tips for changing the function: The NL Drive screw will not be visible when lock body is set to Classroom function There is locktite on the screw that makes it seem like its turned down enou...
CO Reader Modules are not individually replaceable, nor can they be swapped between locks. The inside and outside assemblies of a CO lock are a matched/mated set and cannot be swapped to change rea...
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...
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.       ...
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...
   3. Check the AA battery level, if the AA batteries are below 4.7 volts the AD400 can fail to LINK.             Ins...
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 be...
Night Latch (NL)= key retracts the latch momentarily to allow entry. When key is removed, the latch will extend and locks the door (momentary unlock). Class Room (Lock/ Unlock)= key unlocks...
To convert the Von Duprin 9975NL(Night Latch or Storeroom) to 9975L (Classroom) exit function follow these steps (Note: the mortise lock is shipped as Night Latch from the factory): Turn the NL ...
To convert the Von Duprin 9975L to 9975NL exit function follow these steps (Note: the mortise lock is shipped as Night Latch from the factory): Turn the NL screw on 7500 mortise lock counter clo...
The Schlage AL-Series SFIC locks require one (1) small format spacer (D500-000) for 7-pin cores and two (2) small format spacers for 6-pin cores.  When these spacers are not ins...
To disassemble an X lock, remove the inside knob and unscrew the inside collar and rose.  The X lock spanner wrench (012172-000-30) can be used to depress the knob catch as well as tighten/loo...
When you want to periodically disable and block access to a certain room in a building or an entrance door, that’s when you would need to use a Lockout Cylinder. See full document.
You have a few different options to get all of your locks keyed alike. The first is to order form Build.com, they have any option to key your order alike at checkout for no extra charge. If you're ...
The use of Panic Hardware and/or Fire Exit Hardware is required by the International Building Code (IBC) and NFPA 101 – The Life Safety Code, depending on which code and which edition of the code i...