Mechanical Combination Lock
M-LOCKS BV
Tel: +31 (0)314 376 876
Vlijtstraat 40
ver. 1.2 2017 12 11
Fax: +31 (0)314 376 878
NL-7005 BN Doetinchem
3
www.m-locks.com
Delivered Factory Code is: 4xL to 50.
4x
Turn LEFT and pass “50” three times and stop exactly
on “50” under the opening index the fourth time.
Due to installation tolerances it is possible that the code may have shifted up to two
numbers up or down.
Also due to these tolerances it is important to re-set the code after installation.
With door open, turn the bolt work and lock to locked position.
Dial the code at which the lock opened, on the CHANGING INDEX.
Example: If the lock opens at “49.
4 x LEFT until “49” stops exactly at the Changing Index
1. Carefully insert change key on the inside of the safe door.
(Slightly wiggle if necessary.)
2. Turn change key as shown clockwise to the stop
(approx. 90 deg.)
Never apply excessive force
If change key cannot be inserted or turned, the correct code has not been dialed to the
Changing Index on the dial. Take out the key and dial the valid code again
Now dial your new code using the CHANGING INDEX, f.e. 10-20-30.
(see user instructions of the lock)
(The last number may not be between 0 and 20)
4 x
Turn LEFT, pass first code number “10” three times and stop exactly on the
number on the
Changing
Index
the fourth time.
3 x
Turn RIGHT, pass second code number “20” twice and stop exactly on the
number on the
Changing Index
the third time.
2 x
Turn LEFT, pass third code number “30” once and stop exactly on the number on
the
Changing Index
the second time.
When turning the dial, if a number is passed, start over at the beginning.
After the new code is completely entered,
turn change key LEFT and remove it.
The new code is
installed.
Try the new code several times (using Opening Index) before closing the door!
Change Keys
If installers use the
same change key to
set up several locks, it
is important to inspect
the change key regular
basis.
If the change key is
bend or shows signs of
wear it needs to be
replaced. Otherwise
the new code will not
be set exactly as
dialed.
