table of contents
- Garden pumps
- air
- Tightness
- Suction lift
- Constipation or pollution
- Water depth
- Generate constant pressure
- frequently asked Questions
A garden pump is used to transport water. It is all the more annoying when the pressure is too low. Before replacing the device, you should find the causes and fix them.
In a nutshell
- Air and pollution are often the cause of the pressure loss
- The suction height must not be exceeded
- Pressure switches can compensate for the changing pressure
Garden pumps
Garden pumps are pumps that are used outdoors to transport water. This can be irrigation or drainage. The term garden pump is very broad. This includes, for example:
- Centrifugal pumps
- Piston pumps
- Gear pumps
As a rule, they are operated electrically or with gasoline so that the generator can generate the delivery pressure. Is the possible resp. The desired output is not generated, there is a fault which can have various causes.
air
Since the Garden pump suction line is filled with air, especially before the first use, it must be removed. Because air is one reason why the garden pump works poorly. For pumps that do not self-prime, this must be done by hand. To check this, hold the end of the hose under water while the pump is running. A bucket of water should be sufficient here. If you see air bubbles, there is a fault in the suction line. In this case, bleed the pump according to the instructions in the description of the garden pump to increase the delivery pressure.
Tightness
A leak in the suction hose is often the cause of insufficient pressure. Because in this case the pump can no longer suck in the water and also cannot deliver it. However, the reason for this does not necessarily have to be the suction hose, but the connections on the pump can also be responsible for the lower performance if they are not properly sealed. The measures to increase the pressure are simple: check the suction hose and connections to make sure they are tight.
Suction lift
The suction height of suction pumps is not unlimited. With very good pumps, it is between seven and eight meters. If the height to be overcome is higher, the device no longer works properly. In order to determine whether the suction height is the cause of insufficient pressure performance, set up the pump at a lower point. If it works there without any problems, the suction height at the previous location was too low.
Constipation or pollution
Whether a blockage in the line is the cause of the pressure loss depends on where you are drawing the water from and how clean the water is. Because leaves or tree remains often stick to the intake area. You should therefore check the suction hose and suction area and remove any contamination. remove.
Tip: The suction filter must be clean for the pump to work. If it is dirty, the device cannot work properly.
Water depth
Insufficient water depth is another cause of insufficient pressure in submersible pumps that are used as garden pumps. Therefore, you should check whether the suction area is completely under water.
Generate constant pressure
You can mount a pressure switch on the pump to prevent pressure fluctuations. This is possible with many models. If the water pressure is smaller or larger, the pressure switch reacts by turning the on or off. is turned off. In this way the water is transported evenly. Alternatively, you can set the desired water pressure in advance. Since pressure switches are relatively expensive, consider buying them
- On and off time
- Dry run protection
- material
- operating pressure
respect, think highly of.
frequently asked Questions
With thicker hoses you have less pressure loss. Therefore, whenever possible, you should use ¾ inch tubing.
In any case, before the first start-up. This includes not only the new purchase, but also the case if the pump has not been in operation for a long time.
The performance of these pumps are similar. However, there are different models with different levels of performance.