1. The first use of self priming pump
Self priming pump, is in the self priming pump when the time does not need to add water, relying on its own impeller rolling stock dynamic transmission of liquid media, and the greater the seal gap, the lower the height of its self absorption. This is not to say that since the pump does not need to add water, in the first installation of a good self priming pump, is still the need to use self priming pump irrigation impeller effect, to be able to suck up water.
2. The water inlet pipe and pump body with air
There are many factors to form this scene. For example, before the start of the filling is not filled with water, sometimes looks like the water has been poured from the vent overflow, but did not roll the pump shaft to the air completely discharged, resulting in a small amount of air left in the water pipe or pump body. And the water pipe for a long time potential water, pipe wall corrosion showed holes, water pump operation, the water continued to decline, when these holes exposed surface, the air from the hole into the water inlet pipe. If the water inlet pipe bends in the cracks, the water inlet pipe and the water pump connection at present a small gap, there will be air to enter.
3. Self suction pump, the water is longer
Causes the present situation of elements may be: less water, self suction pump water inlet and outlet cover and other parts have screw loose sight, water inlet pipe sealing degree not, self suction pump itself ceiling Cheng smaller (this situation can be thought to replace a suction larger self-priming pump).
4. Self priming pump operation is not stable, regular time short stop operation
Present the status of the claim to check the physical structure of the pump under the self suction pump is not damaged, the internal absorption of the pump is not a foreign body, such as weeds, etc..
