How to maintain the solar energy without using it in winter?

Clean the scale in the pipe and fill it with water.

I. tools/materials

solar energy and water.

II. Methods/Steps

1. First, remove the sealing ring at the top of the collector tube.

2. Then remove the solar collector tube.

3. finally, pour out the water in the heat collecting tube first, and then pour out the scale.

4. Then take out the rubber sealing ring in the water tank mouth.

5. Then start cleaning the scale.

6. Then rinse the scale of the water tank with water.

7. Then start to install the solar sealing ring.

8. Install the solar collector tube again.

9. finally, push on the dust ring.