Combination Locks, Locksmith Norwich
Combination locks have been in use for over 100 years and in countries such as America, they are the most common safe lock in use. The British and European markets have always favoured the traditional keylocks, but with the advent of electronic locks, this trend has begun to change in recent years. (You can find out more regarding electronic locks by clicking on the relevant sub menu).
An introduction to using combination locks by a Locksmith in Norwich
These instructions have been put together from experience by our locksmith in Norwich and are general guidelines only. It is ALWAYS recommended that ANY changes made to codes, either electronic or mechanical, are done with the door of the safe or container OPEN and preferably in the earlier part of the day to ensure that a locksmith in Norwich can be sought if necessary.
 | Please read the instructions carefully before operating the lock or proceding with changing the combination. There are two marks on the dial ring (see drawing). The mark at the top (the opening index) is used for opening the lock. The index 30° to the left is used only when changing the combination. The dial should always be turned slowly and evenly. A Revolution is counted each time the selected number is aligned with the opening index. |
3 Wheel combination locks
Opening the 3 wheel combination lock. These 3 wheel locks are made by a number of manufacturers and common factory settings are
50-25-50
10-20-30
50
50-25-50
10-20-30
50
To unlock on a 3 number combination (For Example 50-25-50)
1. Turn dial to the LEFT stopping when 50 is aligned with the opening index, the FOURTH time.
2. Turn the dial to the RIGHT stopping when 25 is aligned with the opening index, the THIRD time.
3. Turn the dial to the LEFT stopping when 50 is aligned with the opening index, the SECOND time.
4. Turn the dial slowly to the RIGHT until the bolt retracts.
To lockTurn dial to the LEFT at least four full revolutions.1. Turn dial to the LEFT stopping when 50 is aligned with the opening index, the FOURTH time.
2. Turn the dial to the RIGHT stopping when 25 is aligned with the opening index, the THIRD time.
3. Turn the dial to the LEFT stopping when 50 is aligned with the opening index, the SECOND time.
4. Turn the dial slowly to the RIGHT until the bolt retracts.
PT Lock & Safe, Locksmith In Norwich That Change Combinations
Setting a 3 wheel combination lock
WARNING: Never remove the lock case cover or attempt to insert the change key with the lock case cover removed. This should only be attempted by a locksmith in Norwich. Before turning the change key make sure the wing of the key is fully inserted into the lock.
WARNING: Never remove the lock case cover or attempt to insert the change key with the lock case cover removed. This should only be attempted by a locksmith in Norwich. Before turning the change key make sure the wing of the key is fully inserted into the lock.
Changing The Combination
Select three new numbers. For technical reasons, we strongly recommend you DO NOT use any number between 95 and 20 for the last number. For maximum security, try not to use numbers that end in 0 or 5, and do not use numbers in sequence such as 35-36-37. Also 27-48-56 is not as good as 56-27-48
1. Dial the existing combination on the opening index (see steps 1-2-3 above or directions for opening when on factory setting). Open door of container and throw the bolts using the handle.
2. Dial the existing combination again, this time to the changing index. Only use steps 1-2-3 in other words, do not turn the lock as if you were going to open the safe.
3. With the last number set at the changing index, hold the dial securely and insert the change key in the keyhole in the back of the lock. Make sure the wing is entirely inside the lock and comes to a positive stop (see picture above) before turning the key.
4. Turn the key one-quarter turn to the LEFT (see picture above). With the change key in this position, set the new combination as follows: turn the dial to the LEFT, stopping when the first number of the new combination aligns with the changing index the FOURTH time.
5. Turn dial to the RIGHT stopping when the second number is aligned with the changing index, the THIRD time.
6. Turn the dial to the LEFT, stopping when the third number is aligned with the changing index, the SECOND time. Holding the dial in this position, turn the change key back to the RIGHT and remove it. (See Figure 2). The new combination you have chosen is now set in the lock.
2. Dial the existing combination again, this time to the changing index. Only use steps 1-2-3 in other words, do not turn the lock as if you were going to open the safe.
3. With the last number set at the changing index, hold the dial securely and insert the change key in the keyhole in the back of the lock. Make sure the wing is entirely inside the lock and comes to a positive stop (see picture above) before turning the key.
4. Turn the key one-quarter turn to the LEFT (see picture above). With the change key in this position, set the new combination as follows: turn the dial to the LEFT, stopping when the first number of the new combination aligns with the changing index the FOURTH time.
5. Turn dial to the RIGHT stopping when the second number is aligned with the changing index, the THIRD time.
6. Turn the dial to the LEFT, stopping when the third number is aligned with the changing index, the SECOND time. Holding the dial in this position, turn the change key back to the RIGHT and remove it. (See Figure 2). The new combination you have chosen is now set in the lock.
CAUTION: BEFORE CLOSING THE UNIT try the new combination several times using your new combination or you may need to call a locksmith in Norwich.
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