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
Turn Dial LEFT to extend the bolt. The bolt must slide easily to the
end position and should not be restricted by the bolt work
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. This shifting is normal and will be eliminated once the code is re-set. If the lock
does not open on “50”, try to open at „48“ then “49”, “51” or ”52”.
Also due to these tolerances it is important to re-set the code after installation.
With door open, move 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 factory code using the CHANGING INDEX.
* We suggest you set the code to 10-20-30 as that matches the end-user instruction M-LOCKS
provides.
The last number must be higher than 20. Each number has to be at least 4 increments apart from
the others. For example: 49-45-41 and not 51-52-53.
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.
