The domestic waterworks can be an alternative or an addition to the regular supply of water. If there is no water, energy is consumed but the function is no longer fulfilled.
Possible causes
There are many potential reasons why the domestic waterworks no longer draws water. In addition, they are dependent on the respective type of domestic waterworks. These are differentiated into:
- self-priming pumps
- non-self-priming domestic waterworks
- self-venting devices
- not self-bleeding pumps
Knowing the type of model in question helps to find the cause more quickly and to discover which problems are responsible.
Insufficient depth
In the case of self-priming domestic waterworks or pumps in particular, insufficient depth can quickly ensure that the corresponding amount of water can no longer be sucked in. In the case of domestic waterworks that are not self-priming, just a few air bubbles are sufficient to negatively affect the function or even to a complete one
Succumb to lead. Therefore, in any case, attention should be paid to the required depth, because the delivery line must reach far enough into the water.This is easy to ensure with a new installation. It should be noted that the pump output is designed for the depth.
Leaking lines
A leaky line or leaky valves can mean that it is no longer possible to build up sufficient pressure. Air can also be sucked in. The delivery lines as well as valves and seals must therefore be checked at every domestic waterworks when it no longer draws water.
In some cases it is sufficient to reinsert the seals correctly, to seal a leak or to screw a connection tight again. In other cases, the relevant components must be replaced. This can be the case, for example, if the material has become porous or even has cracks.
Tip: Regular
Checks on the system help to identify such damage at an early stage. This keeps the extent of the problem small and is often easier to fix. This saves work and costs or keeps them low.Lack of ventilation
If the model does not have a self-bleeding function, the air must be removed manually. This action should be done manually. It is important that bleeding takes place regularly. It is ideal to do it before each new start-up if it is a pump in the garden.
In addition, the manufacturer's instructions must be followed in order to operate the vent screw and, if necessary, the lines must also be vented. Even with domestic waterworks with automatic ventilation, however, the problem can arise if there is a fault or damage.
Wrong attitudes
If the pressure valve and pressure monitor are not set appropriately for the delivery depth, the domestic waterworks can run continuously and deliver too little water. It is also possible that no more water is attracted.
This problem can occur with any type of domestic waterworks. It is therefore important, on the one hand, to select a model with a corresponding delivery rate. On the other hand, the setting must be made correctly. The manufacturer's instructions must be observed.
Problems with the filter
Various problems can occur in the area of the filter which ensure that the domestic waterworks no longer draws water. These are:
- Soiling up to clogging
- Holes or leaks
- loose connections
If the water contains foreign substances and coarse dirt, these can clog and clog the filter. The filter should therefore also be checked when servicing the pump or when the domestic waterworks draws increasingly less water or no water at all.
Tip: If this has to be cleaned or if other problems are found and these are discovered early, they can usually be resolved quickly and easily.
Defective valves
In non-self-priming domestic waterworks there are one or more so-called check valves. These prevent the water from flowing back and out of the pipe. Possible reasons for the lack of drawing water can therefore also be found in the area of the valves.
- Pollution
- Rust or broken
- lack of closing, for example due to porous seals
If the filter leaks, dirt can enter the line and block or prevent the valves from closing properly. In both cases, no more water can be attracted. The same applies if the valves are defective.
In order to avoid this or if no errors can be found elsewhere, the valves should therefore also be checked. Flushing the line can help resolve the cause of the lack of tightening. An exchange is necessary if there are defects.
However, this is not always easily possible for laypeople. If necessary, the domestic waterworks must therefore be repaired by specialists in order to replace defective valves.