| 摘要 |
<p>The water for watering the plant-pots is contained in a storage tank in which a pump is immersed. A pressure pipe leads to the first intermediate storage container. An outlet pipe leads from each intermediate storage container into each plant pot. An extension hole can also take water into a stand underneath the pot. The outlet pipe is first closed until the intermediate storage container is filled to the required height. The water then flows through a connecting pipe into the next storage container, and so on. The last intermediate storage container contains a float switch instead of an overflow pipe, the float switch switches off the pump by means of a lead.</p> |
