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“
cannot lock and pull key
”
RELATED FAQS
Question
Answer
Why does my 7500 retract the latch bolt but not re-lock the trim?
Resolution:
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...:
How do I change the function of the Von Duprin 7500 mortise lock from Lever ( classroom ) to NL ( night latch )?
Resolution:
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...:
Why does my key cylinder spin and not lock or unlock the ND?
Resolution:
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. :