FAQs

Question
Answer
The KR4023 mullion requires a 1-1/4" mortise cylinder with straight cam. This is stated in box 7 on the first page of the KR4023 mullion instructions.
With the new FW package 2.19.0; AD300 FW 2.17.0 and AD400 FW 2.17.0 (released 09/23/2011) the firmware looks for a motor clutch switch change after a motor move command. If there is no motor clutch...
If the triangles in the spring cage spindle are not aligned properly the motor will not move enough to change the clutch switch. Is is very likely with a lock on the bench; but a properly install...
When the new firmware moves the motor three times without seeing the clutch switch change it reports to the SUS diagnostics that the motor is stalled. Aligning the triangles will let the motor move...
If the lock is mounted on the door, it is necessary to adjust the mortis/cylinder tightness and spring cage tailpiece alignments, making sure there is no binding or stopping of the spring...
Just align the triangles per the installation instructions to allow full motor movement.   - This will eliminate the SUS motor STALL report. - This will eliminate the three ...
All lock cylinders on a specific project are operable by a special "project key".  Duplicates of this key may be assigned by the building contractor to workmen and subcontractors as required...
Conventional Cylinders - A conventional cylinder is one that requires some breakdown of the lock in order to be removed. These are the most commonly used cylinders sometimes called key-in-lever...
How to create and manage access for household and guests with Key by Amazon. Using the Key by Amazon app, you can create household and guest profiles for friends, family, or even your house c...
Hotel guest lock - Latch bolt operated by key from outside or by operating inside knob/lever. Outside knob/lever is always inoperative. Dead bolt projected by turn from inside and all keys except e...
Dormitory lock - Latch bolt by knob/lever inside and key outside. Inside knob/lever free. Outside knob/lever rigid. Deadbolt by key outside or T-turn inside. Rotating inside knob/lever retracts bot...
Storeroom lock - Latch bolt operated by key from outside or by operating inside knob/lever. Outside knob/lever is always inoperative. Auxiliary dead latch.
Hotel/motel lock - Deadbolt thrown or retracted by emergency master key in upper cylinder from outside or thumbturn inside. Deadlatch retracted by key in outside knob, except when the lock is in ...
Dormitory lock—Deadlocking latch bolt by knobs except when locked by push button in inside knob. Key in outside knob locks or unlocks outside knob and releases button. Closing door releases push bu...