User Guide

PAGE 5
IB/B-T/06
INTERLOCK INSTRUCTION MANUAL
Type DY Access Door Interlock
All Type DY interlocks have two parts: a main body and a latch block-bolt eye. When the main body is separated from
the latch block-bolt eye, the key is retained and cannot turn in the lock. Thus, the key is always held in the lock when the
two parts are separated.
Once the door or gate is closed and the latch block bolt-eye is engaged with the main body of the lock, the key can be
turned and released.
Latch Block-Bolt Eye
Engaged with Lock Body.
Door Locked
Key Removed
Latch Block-Bolt Eye
Disengaged from Lock Body.
Door Unlocked
Key Trapped
Side View - DY Interlock & Latch Block-Bolt Eye
The latch block-bolt eye can be attached directly to the door jamb or fastened to a chain that is attached to the door
frame as shown in the drawing below.
DY Interlock bolted to
angle bracket attached to
fence or fence post.
Latch Block-Bolt Eye
bolted or welded to fence gate
Fence Gate