M-LOCKS ML6740 Manuel utilisateur

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 1 www.m-locks.com

Technical Manual

Mounting Instructions

ML6740

The VdS recognition of this lock is based on this

mounting instruction. Read carefully.

The force applied to the lock bolt should not exceed 1 KN. If higher force is applied, please consult

with the testing institute (i.e. UL, VdS). Only use supplied screws to mount the lock. Fix the lock

handtied.

The lock has to be fitted exclusively on steel secure storage. The mounting base also must be made of

steel . Installation on other materials only after consultation M - LOCKS or VdS .

It is recommended to prevent access to unauthorized persons to safety-relevant parts of the high-

security lock when the safe is open . Par example by a with a screws fixed interior cover.

The lock housing must be protected against destructive attacks from outside with suitable protective

materials .

CHARACTERISTICS

The ML 6740 is a manipulation proof 3-wheel combination lock with new features making it very easy

to mount. VdS Kl.2, EN1300 Class B, ECB-S, CNPP, IMP, DNV.

The lock has the standard foot print (66,7x41mm) and can be mounted in all four mounting-directions.

(HR, HL, VU, VD)

Measurements: 85mm x 61mm, x 29mm. Lock bolt: 25mm x 8mm with two M4 holes in the bolt head.

Bolt Travel: 8mm.

The lock has been tested with 10,000 opening cycles with a bolt load of 2.5 N (mounting position Bolt

right). All other mounting positions as well as higher loads (for example due to bolt work or blocking

element) must be tested by the safe manufacturer with at least 10,000 opening cycles and a

corresponding load.

The lock needs no spline key. It works with a square 6x6mm shaft as the spindle.

Two optional locking bars can be inserted to make a 3-way locking system.

Mechanical Dials

This mechanical lock compatible with the following M-LOCKS dials:

For more information, please read the technical description and mounting instruction of the dial and

ring assembly.

Due to the square shaft the lock is not compatible with dials that have a round, threaded spindle.

CS-serie

MD-serie

ST-serie

KL1060

KL1560

Mechanical Combination Lock

M-LOCKS BV Tel: +31 (0)314 376 876

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DIMENSIONS / MOUNTING INSTRUCTIONS

The Lock is delivered with the Bolt retracted and

ready for mounting. Do not move the cam (part

with square hole) or the bolt. During installation

the bolt must stay in retracted position and

the cam lined up as shown left.

Only use the delivered 3 mounting screws (3x M6 with US ¼” available on demand) and fasten

handtight. (Torque approximately 3,5 Nm). With the lock in OPEN-position (bolt retracted) hold the

dial in a way that approximately “93” is under the opening index and push it with some pressure into

the lock. The shaft cannot be pulled out.

Mechanical Combination Lock

M-LOCKS BV Tel: +31 (0)314 376 876

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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.

Mechanical Combination Lock

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4 x Turn LEFT, pass first code number three times and stop exactly on the number on

the Changing Index the fourth time.

3 x Turn RIGHT, pass second code number twice and stop exactly on the number on

the Changing Index the third time.

2 x Turn LEFT, pass third code number once and stop exactly on the number on the

Changing Index the second time and stop.

After the new Code is completely entered, turn change key LEFT and remove it. The new Code is

installed.

When turning the dial, if a number is passed, start over at the beginning.

Try the new code several times (using Opening Index) before closing the door!

DATA SHEET

Mechanics

Opening

manually

Locking

manually

Blocking element

3 Wheels

Mounting dimensions

standard

Certifications

VdS

Class 2

EN1300, ECB-S, CNPP,

A2P

Class B

Group 2M

DNV

158-2 Listed

IMP

Klasa B

What if …

…accidentally the cam got moved before installation?

As long as the code has not been changed with the change key, the lock can be prepared for

mounting following the steps below:

1. Hold the lock so that you look at the cover and the bolt is to the right.

2. Turn the cam clockwise minimum 4 complete turns and stop when the cam is lined up as

shown in figure 1.

3. Turn cam counterclockwise until lock opens. The cam should be lined up with the “LOCK

OPEN” line on the cover (see figure 2).

…the dial is hard to turn or the dial is rubbing on the dial plate?

Loosen the screw that holds the shaft in the dial and pull out the dial slightly. Then tighten the screw

hand tight. Do not over tighten as that will pull the dial back in. Use liquid thread-lock like Loctite™ if

required.

figure 1

figure 2

Mechanical Combination Lock

M-LOCKS BV Tel: +31 (0)314 376 876

Vlijtstraat 40 ver. 1.22017 12 11 Fax: +31 (0)314 376 878

NL-7005 BN Doetinchem 1 www.m-locks.com

Technical manual

Mounting instructions

ML6785

The VdS recognition of this lock is based on this mounting instruction. Read carefully.

The force applied to the lock bolt should not exceed 1 KN. If higher force is applied, please consult

with the testing institute (i.e. UL, VdS). Only use supplied screws to mount the lock. Fix the lock

handtied.

The lock has to be fitted exclusively on steel secure storage. The mounting base also must be made

of steel . Installation on other materials only after consultation M - LOCKS or VdS .

It is recommended to prevent access to unauthorized persons to safety-relevant parts of the high-

security lock when the safe is open . Par example by a with a screws fixed interior cover.

The lock housing must be protected against destructive attacks from outside with suitable protective

materials .

CHARACTERISTICS

The ML6785 is a manipulation proof 3-wheel combination lock, VdS Kl. 2, EN1300 Cl. B certified, and

very easy to mount.

The lock has the standard foot print (66,5 x 41mm) and can be mounted in all four mounting-

directions. (RH, LH, VU, VD)

Measurements: 85mm x 61mm, x 29mm. Lock bolt: 25mm x 8mm with two M4 holes in the bolt. Bolt

travel: 8mm.

The lock has been tested with 10,000 opening cycles with a bolt load of 2.5 N (mounting position Bolt

right). All other mounting positions as well as higher loads (for example due to bolt work or blocking

element) must be tested by the safe manufacturer with at least 10,000 opening cycles and a

corresponding load.

Two optional locking bars (ML6790) can be inserted to make a 3-way locking system.

DIMENSIONS / MOUNTING INSTRUCTIONS

Mechanical Combination Lock

M-LOCKS BV Tel: +31 (0)314 376 876

Vlijtstraat 40 ver. 1.22017 12 11 Fax: +31 (0)314 376 878

NL-7005 BN Doetinchem 2 www.m-locks.com

1. Lock assembly

The lock can be installed in all 4-installation directions. The combination lock has a standard

footprint of 66.5 x 41mm. Only use supplied screws to mount the lock. Tighten the screws securely

so the lock body is attached firmly to the mounting surface. Fix hand tied (Maximum Torque 5, 5

Nm).

The bolt work must block the bolt sufficiently on both sides in slide-out position. (8mm) But if one

side is blocked a support must be fixed on the opposite side. The margin between closing point

and respectively support and bolt is 0.5-1mm. The support is not necessarily if the side pressure is

limited to 1.8kN. The bolt counter-pressure maximum 1kN.

2. Assembly of the dial:

Spindle has US-screw-thread 5/16-40 UNS-2A (spindle groove on "44"). Assemble the

ring so that the opening symbol is perpendicular above. Cut spindle to length so that the

spindle-end levels with the cam. Don’t let spindle stick out. Twist dial hand tight in the

cam and reverse approximately rotation until the correct spline key position. Spelling

ca.0,5mm axial.

The spindle transit through the armouring can have a maximum diameter of 10-12mm.

3. Spline key position

Depending upon installation of the lock there are 4 spline key positions possible, which are

indicated on the cam:

RH, LH, VU, VD.

Seen from the assembly side:

RH LH VD VU

The correct spline key position is very important, because otherwise the "prohibited area" (last

figure not between 0-20) moves in the operational range and can lead to lock malfunctions.

4. Place the spline key

If the spindle groove is on the correct spline key position drive the attached spline key

carefully in, so that the nose lies gently on the spindle.

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.

Mechanical Combination Lock

M-LOCKS BV Tel: +31 (0)314 376 876

Vlijtstraat 40 ver. 1.22017 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.

Mechanical Combination Lock

M-LOCKS BV Tel: +31 (0)314 376 876

Vlijtstraat 40 ver. 1.22017 12 11 Fax: +31 (0)314 376 878

NL-7005 BN Doetinchem 4 www.m-locks.com

DATA

Mechanical

Opening

manually

Locking

manually

Blocking element

3 wheels

Manipulation-proof

Yes

Mounting dimensions

Standard

Certification

VdS

Klasse 2

EN 1300

Class B

ECB-S, CNPP, A2P

Class B

What if …

…accidentally the cam got moved before installation?

As long as the code has not been changed with the change key, the lock can be prepared for

mounting following the steps below:

1. Hold the lock so that you look at the cover and the bolt is to the right.

2. Turn the cam clockwise minimum 4 complete turns and stop when the cam is lined up as

shown in figure 1.

•Turn cam counterclockwise until lock opens. The cam should be lined up with the “LOCK

OPEN” line on the cover (see figure 2).

figure 2

figure 1

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