night latch not locking

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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...
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...
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...
See below for commonly requested dimensions on the MA lock.  Dimensions not found in other literature have a square around them. CL refers to "Centerline".  
Finish is not specifically stated as being covered under warranty as it is covered under defects in material and workmanship.  EXCEPTION: There is no finish warranty for Falcon products. ...
Falcon lock warranty statementIves warranty statementGlynn-Johnson warranty statementLCN closer warranty statementSchlage warranty statementSteelcraft warranty statementVon Duprin warranty statement
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 ...
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...
If the NL screw on the 99 device has been removed the Trilogy lock will not retract the latch.
No, the E option (electric locking/unlocking of the mortise lock body) requires a functional L, TP, or K trim, but the cylinder would operate in a night latch function as desired.   Order E9975L/TP...
The following steps are required to convert the Von Duprin 98/9975L from classroom to night latch function: Order new 996L-NL-M trim and reset NL drive screw in mortise lockbody as set from...
To convert the Von Duprin 98/99 Rim or Vertical (Rod or Cable) Exit Device with functional lever (996L-R/V) to act like a rigid lever (996L-NL-R/V) with key over ride follow these steps: Remove ...
We do not offer the 230L with night latch function. There is no conversion available.
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...
The date of manufacture printed on the chassis cover (see below), will determine if you have a revised or old chassis. Chassis manufactured mid-June 2013 will have the new improvements. The first t...
Follow the steps below to troubleshoot the problem. Measure the voltage at the electric strike. If the strike is FSE and not locking there should be no voltage at the strike and if it is FS there ...
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...
Incorrect timing of the lock can cause the outside lever to retract the latch when raised up.  See instructions here (Step 16 and 17) to time a T351, T381, T561, and T571.  Also applies to the same...
To verify the timing on a T561, function test the outside lever after locking it.  To lock the key should only rotate 180 degrees (Not 360 degrees as Schlage does) A properly timed lock will n...
MultiPoint locks are three-point locking systems that secure the door at three points – top, bottom, and traditional center latch location. Operating just like traditional locks, MultiPoint locks a...
See transformation document.
When CX99L-BE is not armed with key cylinder on the device or shunted by card reader, the exterior 996LBE lever trim will release.
W571 Corridor Lock  Deadlocking latch bolt. Push Button Locking. Button on the inside locks outside lever until unlocked by key or by rotating inside lever. Closing the door releases button....
 Falcon T Lock Latch Conversion Table       Effective mid-June 2013  Old Part Number   New Part Number       ...
   Falcon T Lock Latches No Longer Offered With The T Lock     Effective mid June 2013  Old Part Number  New Part Number   &nb...
The Falcon T lock will be featuring a new latch on June 10th, 2013.  The Falcon T lock remains a certified Grade 1 lock and is compliant with ANSI / BHMA 156.2-2011.  The revised loc...
 The Y latches listed below are adjustable to fit either a 2 3/8" or 2 3/4" backset. LATCHES WITH LOCKS  Description  Backset  Specify  Square corner, 1-1/8" x 2-1/4", standard  2...
 The latches for the Y and F lock are not interchangeable as the hole sizes are different. Substituting any latch voids your UL and product warranty.