Operating Notes
S&G Model 2740 Electromechanical Safe Lock
Defense Security Service, Center for Development of Security Excellence http://dssa.dss.mil
1
Dialing Notes
Operation Notes
•
All setup, maintenance, and troubleshooting operations must be performed with
the safe or container OPEN.
•
NEVER close the container with either a change key or the setup module attached.
•
The setup module must be disconnected to test the lock.
•
Lock bodies and covers are matched components. Do not replace a lock cover with
the cover from another lock. At best, this will produce erratic lock operation.
•
The lock will emit a beep or beep pattern to communicate its state. See the table on
page 3.
•
If ten (10) incorrect combinations are entered in a row, the S&G Model 2740
Electromechanical Safe Lock will shut down for a period of ten (10) minutes.
•
Avoid “overshooting” the number and backing up to it.
•
If you overshoot, continue rotating the dial in the same direction for an extra turn,
then stop precisely on the desired number.
•
The dial can be rotated more than the minimum number of rotations for entry of
any combination number.
•
The 2740 is locked by turning the dial left (counterclockwise) at least half a
revolution (approximately 50 numbers).
•
If you stop dialing for more than ten (10) seconds, the lock will reset, forcing you to
begin the combination entry sequence over again.
