1. Protective film on the surface of security door The protective film must be torn off within one month after the installation is completed. If there is sunlight, the door should be torn off immediately, otherwise the paint will be damaged. 2. How to use A, B and C locks The B key can be provided to the installer. After the installation is completed (after the acceptance of the decoration is passed), if the owner simply inserts the C key into the lock cylinder and rotates 360 degrees, the B key will automatically fail, and the A and C keys can be used as usual. Do not try to open with the C key before the owner checks in. 3. Dripping with oil on hinges, lock points, etc. 4. The lock cylinder disables the instillation of vegetable oil, lubricating oil, etc. Inflexible opening can be used with a little pencil powder, or check the keyhole, upper and lower connection lock points and door frame lock holes for rust. If there is rust, you can drop a few drops of oil on the upper and lower connection lock points and keyholes, etc., and you can open it several times. 5. Anti-theft door paint should pay attention to prevent hard objects, sharp weapon scratches When cleaning, use water drops to clean the wet towel, wring out and scrub, and disable the cleaning of gasoline, banana water, etc. 6. Please come and go, please close the door When sleeping or going out, use the key to lock the upper and lower locks to strengthen the anti-snoring function. Matters needing attention: If the security door is used for more than one year, all kinds of anti-theft door pins, contact points have the possibility of rust, you can use good lubricating oil, the one by one pin and contact points are painted, increase lubrication Remember that the hole does not apply oil. Security door purchase decoration materials knowledge security door paint Kn95 Mask,Kn95 3D Mask,Kn95 Face Mask,Kn95 Respirator Ningbo Autrends Prevention Products Co., Ltd , https://www.autrendsafety.com