Use and maintenance of door locks:
1. Never add oil to the lock core. If the key is not flexible to open, put some pencil core scraps into the key hole.
2. If you accidentally turn the safety inside the spherical door lock by 900 clockwise, it will become a permanent safety. At this time, you can only use the key to open it. You only need to rotate the safety 900 counterclockwise to restore it.
3. During normal use, if there is dirt, it can be removed with a dry cloth (or a little water). Do not scrub with detergent or other chemicals. Otherwise, the protective film of the exposed parts will be damaged and the color will fade.
4. It is best to hold the handle when closing the door, screw the bolt into the lock body, and then let go after closing the door. Don’t hit the door hard, otherwise it will reduce the service life of the lock.