©
Copyright 2014, Sargent & Greenleaf
Page 6
O
perating
i
nstructiOns
S&G
™
Model 2740B
Electromechanical Safe Lock
l
ock
o
pen
l
atch
— 444 D
evice
r
equIred
If the lock’s low battery warning signal is ignored for approximately one hundred consecutive openings, the 2740B will go into
Lock Open Latch
condition. It cannot be locked. To reset the Lock Open Latch, attach a fresh 9-volt battery to a Sargent & Greenleaf
444 Device
(S&G part
number 2740-444), then plug the device’s connector into the lock’s change key port on the outside of the cover. As soon as it’s plugged into the
cover, the lock motor will run briefly to reset the Lock Open Latch condition. Unplug the
444 Device
, and turn the dial to extend the lock bolt.
REMOVE THE LOCK COVER AND REPLACE BOTH LOCK BATTERIES IMMEDIATELY. DO NOT ATTEMPT TO OPERATE THE LOCK WITH
THE
444 Device
LEFT PLUGGED INTO THE COVER
.
c
hangIng
the
l
ock
b
atterIes
1. With the container (safe) door or drawer open, extend the locking bolts. This is referred to as locking the container open.
2. If the 2740B lock bolt is not extended already, turn the dial left (counterclockwise) to extend it.
3. Remove the two lock cover screws and carefully lift the cover off of the lock body. Do not let any metal (conductive) tools touch anything on
the underside of the cover.
4. Remove the CR123A camera-type battery from the cover first.
5. You can use the back end of a 2740 change key to help push the CR2450 coin cell partially out of its holder.
Then you will be able to grasp it with your fingers and pull it completely out of the holder. Dispose of both
batteries responsibly.
6. Wait one minute after removing the old batteries before installing the fresh, new ones.
7. Slide a new coin cell battery into its housing first, positive side up. Within one minute, install the camera-type battery into its receptacle.
Never force batteries into place. If batteries are installed backwards (incorrect polarity), no electrical damage will occur, but the lock will not
function properly.
8. When the backup battery (coin cell) and then the main battery (camera-type) are installed, you will hear a beep. If you have not
waited one minute between removal of the old batteries and installation of the new ones, the beep may not occur. If you do not
hear the beep, remove both batteries and repeat the installation process, inserting the coin cell battery first.
S&G
444 Device
S&G
444 Device
with attached 9-volt battery
Connecting the
444 Device
to
the lock change key port
