How to clean the scale on the water heater

Water heaters are a type of household bathroom facility that we often use. Some families may never clean the water heater after purchasing it. If you open the water heater at this time, you will find that there is a very thick layer of scale inside. This layer of scale will first affect the volume of the water heater, and secondly affect the heating efficiency of the water heater. This is why after the water heater has been used for a long time, no one can add it for a long time. So how do you clean the scale inside the water heater? Please see the introduction below.

Before cleaning the electric water heater, you need to unplug the power supply, cut off any form of heating of the electric water heater, and close the cold water and hot water angle valves under the electric water heater. Open the seal of the water heater and replace the magnesium rod inside the electric water heater. The function of the magnesium rod is to reduce the corrosion of the heating tube and cause the scale to produce a chemical reaction. The magnesium rod used for a long time will produce flocs or lumps wrapping the rod surface until the magnesium rod is completely consumed. Therefore, if you use the electric water heater for a long time, it is best to replace the magnesium rod with a new one in time, otherwise it will easily leak water and electricity.

Remove the limiting device of the pressure relief valve wrench (usually a component with a plastic square hole, a safety piece used to prevent the pressure relief valve from being accidentally opened), and use a plastic tube to connect the small tube at the pressure relief port of the pressure relief valve to draw out the water in the inner tank; turn the pressure relief valve wrench 90 degrees from the vertical position, and the pressure relief valve has been opened. Disassemble the joint of the metal hose at the hot water pipe. You should see water flowing out of the pressure relief valve. Drain the water in the inner tank. When there is basically no water flowing out of the pressure relief valve, the water in the inner tank has basically been released, and most of the scale (floc) in the inner tank will be discharged along with it.

It should be emphasized again here that since many water heaters are now controlled by electricity, the electricity must be turned off before cleaning, otherwise it is easy to cause electric shock. It is also important to note that as technology becomes more and more advanced, the structure of household appliances is often becoming more and more complex. Cleaning a water heater is a very professional job. Do not disassemble the water heater privately. You can ask after-sales staff to clean it, or ask a professional cleaning worker to clean it.