
© Copyright 2010, Sargent & Greenleaf
Page 4
cOmbinatiOn changing instructiOns
S&G© Model 2740 Electromechanical Safe Lock
the change key
combInatIon changIng notes
1. The change key only plugs into the lock cover one way. When the
orientation is correct, the arrow in the connector will align with the
arrow molded into the lock case.
2. In between programming steps, the lock will emit a series of quick
beeps as the dial is turned clockwise. If the user continues to turn
the dial too far clockwise after the beeps are emitted, the lock will
interpret it as the next combination being entered incorrectly and it
will emit a brap (one long beep). For example, during a combination
change, after the old combination is entered, three quick beeps are
emitted as the dial is turned clockwise. If the user continues to turn
in the clockwise direction, the lock will think the new combination
is being entered incorrectly. Therefore, you should stop turning
clockwise immediately when the three quick beeps are heard.
3. If you begin a combination change and then decide not to proceed
with it, you can simply wait two minutes for the change function to
time out. At the end of the two minutes, a long tone will sound.
changIng the combInatIon wIth the change key
This procedure is used for locks in single user mode or dual user
mode. The only difference is that each user of a dual user lock must
change his or her own code independently.
The lock gives you two minutes to enter each combination (two
minutes to enter the old combination, two minutes to enter the
new combination for the first time, two minutes to enter the new
combination for the second time). If you take longer, the lock will reset,
and you will have to start again at the first step. Also, if you stop
dialing a combination for more than ten seconds, the lock will reset,
and you will have to start again at the first step.
The changing procedure is as follows:
1. Open the lock using the existing combination(s).
2. With the safe or container open, extend the lock bolt to the locked
position.
3. Insert the change key into the receptacle in the lock cover.
The lock will emit one quick beep when you begin to enter your old
combination as follows.
4. Turn the dial left at least four complete revolutions, then
stop precisely on the first number of the OLD combination.
5. Turn the dial right (clockwise), stopping the third time the
second OLD combination number comes to the opening index.
6. Turn the dial left, stopping the second time the third OLD
combination number comes to the opening index. Then turn
the dial right until you hear three quick beeps from the lock.
7. Turn the dial left (counterclockwise), stopping the fourth
time the first number of the NEW combination comes to the
opening index.
8. Turn the dial right (clockwise), stopping the third time the
second NEW combination number comes to the opening index.
9. Turn the dial left, stopping the second time the third NEW
combination number comes to the opening index. Then turn
the dial right until you hear three quick beeps from the lock.
The new combination is entered again for verification.
10. Turn the dial left (counterclockwise), stopping the fourth
time the first number of the NEW combination comes to the
opening index.
11. Turn the dial right (clockwise), stopping the third time the
second NEW combination number comes to the opening index.
12. Turn the dial left, stopping the second time the third NEW
combination number comes to the opening index. Then turn
the dial right, listening for five quick beeps to indicate a
successful combination change. Continue turning the dial
right to retract the lock bolt.
Do not close the safe door or container drawer until you
have checked the new combination for proper operation at
least three times with the door or drawer OPEN.
If you accidentally close the door with the change key in the lock,
you can open it by going through the entire combination change
procedure, beginning with step 4.