1. The transmission part of the lock body should always keep lubricant to keep its transmission smooth and prolong its service life. It is recommended to check once every six months or once a year to check whether the fastening screws are loose and ensure fastening.
2. When the lock head is used, Jamlom graphite powder or pencil powder can be applied to the lock core groove regularly (half a year or one year) or when the key insertion and removal is not smooth, so as to ensure the smooth key insertion and removal. However, it is forbidden to add any other oil for lubrication, so as to avoid the grease sticking to the marble spring, which will make the lock unable to turn and open.
3. Always check the fit clearance between lock body and lock plate, whether the height of lock tongue and lock plate hole is appropriate, and the best fit clearance between door and frame is1.5mm-2.5mm. If any change is found, adjust the position of hinge or lock plate on the door. At the same time, pay attention to the weather (wet in spring and dry in winter), so as to ensure the reasonable gap between the door and the frame, the lock body and the lock plate and ensure the smooth use of the lock. Ask the manufacturer directly when you can buy it.
I. Appearance maintenance
1. In the process of house decoration, please seal the exposed parts of the lock, such as handles and panels, with plastic bags (do not touch the surface of the lock with adhesive tape), so as to avoid spots, blisters or even delamination on the surface treatment layer of the lock parts due to the corrosion of acidic or alkaline substances and gases in the decoration process, which will seriously affect the appearance quality of the lock. Some locks made of zinc alloy and copper will find "spots" after being installed on the door for a long time. This phenomenon is not rust, but oxidation. If this happens, the spots can be removed by spraying wax on the surface.
2. In normal use, if there is dirt, it can be wiped off with a dry cloth, and it is forbidden to scrub with chemicals such as detergent. Otherwise, the protective film of the exposed part will be damaged, resulting in fading. Do not wipe the lock body and handle with wet cloth, because some metal locks will rust; Locks made of alloy will wear off the coating and lose their aesthetic effect.
Second, the performance maintenance
1. During use, add some graphite powder (pencil powder) to the keyhole for lubrication at regular intervals (once every six months or once a year) or when the key is not inserted smoothly. Don't add any liquid oil as lubricant, so as to avoid grease sticking to the marble spring, which will cause the lock not to turn and open. If the door closing fan is laborious, you can wipe a little pencil powder on the oblique tongue to solve it.
2. When closing the door, it is best to hold the handle, screw the locking bolt into the lock body, and then let go after closing the door. Don't slam the door hard, otherwise it will shorten the service life of the lock.
3. When the main lock tongue or safety lock tongue extends out of the door, don't slam it to avoid damaging the lock tongue and the door frame.
4. Because the sealing strip installed between the door body and the door frame has elastic function, when the lock is locked with a handle or a key, you can push or pull the door by hand while opening the door to overcome the elastic force. Don't turn the handle or key hard to open the door, so as not to damage the handle or key.