To install a new code, it is necessary to remove the locking mechanism. Only the hull cover is removed from the door. The entire mechanical device should not be removed. Next, all the bolts available on the device are displayed. They reliably fasten the safety cover located in the inside of the closing device. Such manipulation will help to get special encoding plates. Each such plate has a unique device. This is usually a miniature cut that has a different focus. The plates that contribute to the creation of a code combination, as a rule, have sections facing the castle mechanism. If the plates do not participate in the formation of the combination, then their plates “look” outward.