The method of cleaning scale in solar tubes is as follows:
Tools: solar tubes, descaler.
1. Open the water inlet of the solar water heater.
2. Add the solar water heater descaling agent to the water storage tank.
3. Automatic heating cycle for 20-30 minutes, so that the descaling agent solution comes into full contact with the hot water lines.
4. Open the drain port and remove the descaling agent.
5. Fill the water tank with water then circulate it for 2 to 3 minutes.
6. Drain the circulating water and the scale cleaning job is done.