emergency lock over ride

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Question
Answer
Only the lever return spring is available.
Related solution: What is the part number for the lever return spring for the old M series mortise lock?
A flat head screwdriver can be used or the 35-250 emergency key.
a feature that allows an electrically operated lock to be released or engaged with a hand-operated key.
L9040 locks WITHOUT indicator uses an emergency tool available in the price book, L583-233.L9040 locks WITH an indicator requires a small flat blade screwdriver.
The L583-233 emergency key spindle length is 1.575"The L583-233 emergency key will operate on a door thickness up to 3" extended equally. 
The emergency keys are shipped with each lock.  The part numbers are; 61-509 standard and 61-510 large bow size.
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...
M504-271 is the emergency key used to open a locked S40.
The Schlage CO-220 is standalone classroom lock down solution with remote fob and visual indicator which allows immediate local lock down by simply pushing the button on the remote fob from anywher...
L9496 is a Privacy mortise lock with “Occupied” Indicator. Knob/lever retracts latchbolt from either side. Deadbolt thrown or retracted by key outside (retraction by key required in the event ...