The choice of a drainage pump should be approached very seriously. The fact is that in water that you need to pump out small pebbles, pieces of earth, clay, plant residues. In this case, only a drainage pump is suitable for pumping water with solid particles. In the construction markets of models of such small units, about one and a half dozen are represented.
How to choose the right drainage pump? First of all, pay attention to the compliance of the technical capabilities of the unit for the current conditions: firstly, the pressure of the water created by the pump should be more than the depth of the place to install it (in this example we will analyze the installation of the pump in the cellar). Secondly, the “drainage” must have a float-type switch. Outwardly, this device is a small plastic box connected by a short electric wire with a pump. It has contacts and a freely moving metal ball. Being in the water, a box, like a float on a fishing rod, takes a vertical position. The ball rolls into the lower part of the box, closes the contacts, and the pump turns on. As soon as the water level decreases, the box takes a horizontal position, the ball opens the contacts, and the pump turns off. So in automatic mode as water enters the pit and it is pumped out. This process is not required to control this process.
I purchased a drainage pump a few years ago, when a technical pit and a cellar under the house was more than half a meter in unexpectedly flooded with soil water. The supplies that were stored there were deteriorated, and some equipment was also injured. I chose the pump with a margin of both technical and technological capabilities. After all, he planned to use it in other economic work: water the beds, pump out the contents of the drain hole, etc.
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