Cleaning of air-lift pump for removing of impurities from sand filter

1. Remove the hose for air supply from the air-lift pump nozzles carefully.

2. Take out the air-lift pump.

3. Take out also the pipe, in which the air-lift pump was put in.

4. Wash the pipe inside and outside with water properly.

5. Wash also the air-lift pump with water properly.

6. Finally, put the air-lift pump back into the pipe and give it back to the accumulation tank.