Lever handle unlocks when up

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Question
Answer
Installers have reported that their AD-CO Series cylindrical or mortise locks will unlock whenever the outside lever is lifted.    This will occur if the outside spindle (square post) is install...
Yes, Von Duprin 996L lever handle can be replaced with a new one . Attached installation instructions shown how to replace the existing lever handle on 994/996L trim for rim and vertical rod device...
The 375L is the only lever trim with 5575 mortise device that locks or unlocks the outside handle.
Trim
The 7500 mortise lock should be configured for NL function as shipped not as Classroom. See figure 4-3 in E996L instructions.
Check the timing first, Where can I find timing instructions for the Falcon T lock? The keyspindle assembly for the T/RU571 and the T/RU561 was re...
Replace the lock chassis as necessary for any T locks exhibiting this issue.  RU locks need to be replaced entirely.