It's hilarious that you ordered a water fountain but don't know how to use it. Below are the steps to use the castle cat water fountain.
1. In the first step, you must fill the tank with water and don't exceed the maximum limit.
2. Connect the hose with the water pump and exhaust cover.
3. Place the hose in the tank with the water line from the pump facing the UVC lamp.
4. Close the tank and place the drinking tray on the lid. When closing the tank, turn it clockwise.
5. Place the filter in the cylinder, attach the filter cotton, and insert the water outlet.
6. Insert the power cord and place the assembled water dispenser. In this part, make sure the logo is aligned with the position of the chassis button.
7. Finally, turn on the power.