Disable the Guard Lock on Bridgeman Safety Deposit Boxes
1. With the guard key & customer key inserted into the keyways, tum both keys clockwise to the open position until it stops.
2. In the open position, directly behind the guard side, insert the change key tool and tum the change key tool 180 degrees three times.
3. Remove the guard key.
4. After removing the guard key, tum the change key tool clockwise until you hear three audible clicks.
5. Test the lock using the customer key only. This lock should now be single key access.