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...
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...
Recommend to order a new 990NL-R/V or M trim to change from TP/Classroom function to NL/Storeroom function. You will also need to reinstall the NL drive screw back into into the mast...
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...
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...