The disassembled program is:
1、 Turn off the main switch. Find the red and blue dots under your command. Buckle it with your hand to reveal a small hole.
2、 Use a flashlight to investigate the inside of the hole and see if one of the fixing screws inside is a cross or a straight hole. Use the corresponding screwdriver to loosen it.
This screw from a few brands has an inner square hole (such as Moen), which is more troublesome. When there is nothing available, be careful not to damage the screw opening when using other detachable substitutes.
3、 After loosening this screw, you can remove the handle.

4、 At this point, what you see is a large copper nut. After using an adjustable wrench to open the nut, you can remove the valve core of the faucet.

5、 Investigate whether the copper surface under the valve core is uneven or has fine sand particles, and clean it thoroughly.
Take out the rubber sealing ring on the flat surface and investigate for any damage.
6、 Generally speaking, the overall integrity of hot and cold faucets is good, and their application reliability is high. So, when you open it, you often can't find any significant problems, and then you just need to replace the valve core.
The price of the valve core ranges from 10 to 40 yuan.
7、 Finally, reverse the device according to the above procedure.
However, it should be noted that if these products are from legitimate manufacturers, they are generally guaranteed to be repaired for 5 years. Some even provide door-to-door service.
Article source: Flat disc faucet manufacturer www.baolonghs.com