1. Mild cleaning: Hands on, plenty of food and clothing, the cleaning process is not difficult, and can be divided into the following processes:

Step 1: Unscrew the hot water outlet nut and block the hot water outlet to prevent water from flowing out of the water heater. Unscrew the cold water outlet nut together, connect the hose (showerhead pipe is sufficient) to drain the water until no water flows out of the cold water outlet. For a 50L water heater, drain for about 1 hour.

Step 2: Remove the hose connected to the cold water outlet, connect one end of the hose to the hot water outlet and the other end to the faucet. Turn on the faucet and fill it with water for 1 minute, then plug the cold water outlet and let the cold water stay in the inner container for an additional moment. Then turn on the cold water outlet to drain the water, repeating this process several times until the discharged water is clean.

Step 3: Tighten the nuts on the cold and hot water ports, open the triangular valve, and turn on the hot water from the faucet of the water heater. After the water flows out, close it.

When cleaning, attention should be paid: before cleaning, the water temperature of the water heater should be below 50 ℃. This water temperature can be directly discharged into the drainage pipeline without affecting the pipeline. When cleaning, if the water heater has a drain outlet, it can be opened together. Due to the lower orientation of the drain outlet compared to the cold water outlet, the discharge is more complete.

2. Deep cleaning: Please hire a professional repairman. Deep cleaning requires opening the repair hole of the water heater. Therefore, to ensure safety, it is best to hire a professional repairman to clean.

Many people may think that the water from an electric water heater that has been used for many years and has never been cleaned before is still very clear, indicating that there is no scale inside. However, in fact, such electric water heaters contain more scale and other dirt, which poses a significant threat to human health and urgently needs to be cleaned. Inside the electric water heater, the hot water pipe is located at a high position, about 2 centimeters away from the top of the inner tank, while the cold water pipe is located at a low position, about 3 centimeters away from the bottom of the inner tank. When using an electric water heater, the cold water pipe always receives water. Hot water is squeezed to the top by the cold water and flows out along the hot water pipe, while scale settles at the bottom of the inner tank and does not discharge through the hot water pipe.

文章源自：开水器厂家      http://www.kplongyi.com/