Water Test
1. Close the roof lid tightly.
2. Hold the hose upward and adjust water fountain to about 50 cm (20 in.) high.
3. Pour water over the roof from about 30 cm (12 in.) above roof for more than 5 minutes.
4. While pouring water, check for leak around the roof lid.
5. In the event of leakage, check the drain pipe, weatherstrip contact and others.