1. Disconnect the power supply from the drainage equipment.

2. Water tank drainage method: open the drain valve (or drain plug) at the bottom of the water tank to drain the water in the tank. If necessary, tilt the water cooler at an angle to make the drainage cleaner.

3. Pipe and laser drainage: first pull out the four water pipes, and then blow with compressed air from the drainage inlet and outlet of the pipe for 1 minute. The pressure of compressed air should not be too high and controlled within 3 MPa. The water stored in the pipe will be forced back to the tank and discharged from the outlet of the tank.

4. Open the filter element in the refrigerator and drain the water in the filter element.

5. Open the water tank cover and observe whether there is water in the water tank (the compressed air can be used to connect the water supply port to blow back again, and the residual water in the pipeline, laser (pipe) and water pump is forced back to the water tank, and then discharged from the water tank outlet). If so, tilt the chiller slightly to drain or dry the water with a dry towel.

6. Drain the pump head: screw out the drain screw under the pump to drain the water in the pump. It is recommended to blow off the residual water in the pump head with compressed air, and then tighten the drain screw.

7. Drainage of filter and deionization tank: open the drain valve or plexiglass shell at the bottom of filter and deionization tank to drain residual water.