Solar water heaters should be cleaned after being used for a while. After 10 years there will be a lot of scale that will need to be cleaned. You can clean it yourself or hire a professional company to clean it for you. Let's see how to clean it yourself.
1. First drain the water from the water heater.
2. Remove all vacuum tubes, use a long wooden stick, and tie a ball of cotton fabric with cotton rope to one end. The size of the cotton ball should be slightly larger than the inner diameter. of the vacuum tube, but not too big, just feel a little resistance, slowly pass it through the vacuum tube, rotate it, then rotate it. The vacuum tube should be filled with water.
3. Open the water inlet of the solar water heater.
4. Add the solar water heater descaling agent to the water storage tank.
5. Automatic heating cycle penfor 20 to 30 minutes, so that the descaling agent solution comes into full contact with all parts.
6. Open the drain port and drain the cleaning fluid.
7. Fill the water tank with water, then circulate it for two minutes.
8. Drain the circulating water, clean and descale.
In general, solar water heaters should be cleaned after one year of use, then cleaned every three months on average. Solar water heater cleaning is also a kind of solar water heater maintenance, which will help the solar water heater to be used for a longer period of time. The cost of cleaning a solar water heater is around 200 to 300 euros, so the price remains affordable. But the cleaning step is indeed essential.