ND timing instructions

RELATED FAQS

Question
Answer
Incorrect timing of the lock can cause the outside lever to retract the latch when raised up.  See instructions here (Step 16 and 17) to time a T351, T381, T561, and T571.  Also applies to the same...
To verify the timing on a T561, function test the outside lever after locking it.  To lock the key should only rotate 180 degrees (Not 360 degrees as Schlage does) A properly timed lock will n...
You can reference the 7500 mortise lock rehanding instructions. Remove the two screws from mortise lock faceplate. Remove the face plate and the collar from the mortise lock then rotate the la...
To install a Schlage ND170 click here for the installation instructions.
Select the appropriate installation instructions below for step-by-step guidance on how to install a Schlage ND lock.  ND-Series Installation InstructionsND25 Installation InstructionsND170 Insta...
As of February 2016, ND locks began shipping with a new latchbolt. The new latchbolt offers substantially improved performance in adverse door conditions (ex, with heavy door loading) andis more ro...
Prior to February 2016, using ND-Series locks on hollow metal doors required the use of latch spacers which prevent the latch from "fishtailing" (back end of latch moving from side to side). Latch ...
Chexit devices shipped after 8-24-2015 with motor driven:Attached is the installation instructions of the the Von Duprin Chexit devices that includes the wiring diagrams.Installation Instructions&n...
Chexit devices shipped before 8-24-2015 with solenoid driven:Attached are the single and double door wiring , cable voltage reading documents for trouble shooting, and the installation in...