T381 Classroom Security Lock is not a "true" classroom security / Intruder lock function. The T381 is classified as a ANSI/BHMA F88 function: Defined as Grade 1, Apartment, Exit or Public Toil...
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 keycam may have failed, example here, the latest design keycam can be easily identified as the colored changed to black.
Replace either the keycam or chassis as needed to r...
This could also happen if the tailpiece isn't installed in a KIL, FSIC, or SFIC cylinder. The FSIC driver also could have come loose from the core in the spindle.
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...
The Schlage full size interchangeable core (FSIC) prepped B560F, B561F, and B563F deadbolts all require a UL fire cup (R) in order to be UL listed. This fire cup is s...
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...