Hold the device face up (horizontal position). Use your fingers to press and slide upward the water tank cover outward until you hear a click. Then remove the water tank cover downward.
Pull the water tank out and down, grasping both sides firmly to remove. Be careful not to spill any water.
Fill the tank with water through the small hole, ensuring that the water does not overflow. Wipe off any excess water outside of the water tank.
Keeping the device face up, place the full water tank cover tightly back into the device. Be sure to align the water hole with the spray hole.
Reattach the water tank cover, Use your fingers to press upward and slide the water tank cover inward until you hear a click.