change ND function

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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...
The current 712L/912L (after 2/28/2011) can be field converted by purchasing the NL Spring part #600339 and following the L to NL function change instructions.
The function of the PL7 or PL8 cannot be changed due to the assemblies being manufactured differently.
Install the pinion cam at the top of the retractor per Figure 7-3 in Step 7 of 1690 Instructions.
The E996L is only shipped FS fail safe from the factory but can be converted to FSE fail secure.  To convert the 996L to E996L (fail safe or fail secure) follow step 1 of the attached installa...
Conversion kits are available to convert many popular functions.Conversion kits manufactured on or after January 30, 2017 will have the new enhanced ND spring cage, lever, plunger and buttonCo...
For all available ND Series Conversion Kit part numbers, click here.
To convert from a ND95 to a ND75 remove the outside keycam and replace it with the N123-009 keycam.
Swapping out the following parts of an ND50 will convert it to an ND53: Swap N123-028 Push button plunger for  N123-017, Push and Turn button plunger Swap N523-000, Push button for N523-001 Pus...