The new pumping station does not pump water for a reason. DIY pumping station repair

Unfortunately, even the most reliable pumping equipment can fail. Among the malfunctions are serious breakdowns and banal wear of rubbing parts or seals. Fixing the simplest problems is within reach home handyman, but you must admit that you need to know how to carry out even basic repair operations correctly.

We are happy to help you master the difficult work of a repairman household appliances. The article presented to your attention describes in detail all the typical types of breakdowns of pumping units. Given effective methods eliminating malfunctions in water supply installations.

Those wishing to make repairs pumping station With our own hands we will find answers to all the questions that arise in such cases. Helpful information reinforced step-by-step photo instructions, diagrams and videos.

Using a pumping station, you can solve several problems related to water supply:

• organize an automatic supply of water from the source to the water supply system of the house;
• adjust the water pressure in the water supply, bringing it to an acceptable level;
• protect the water supply system from water hammer;
• create some water reserve in case of problems with water supply.

When troubleshooting a pumping station, you need to remember that dry running is strictly not recommended for almost all models of surface pumps. Before turning on the pump to check its operation, you should make sure that it is filled with water. If this is not the case, the device must be filled through a special filling hole.

“Dry running”, i.e. operation without water supply, idle, is very dangerous for almost all models of surface pumps. The parts wear out a lot, and the motor winding may burn out.

#1: Pump works, but no water flows

If the pump turns on and you can see (hear) that it is working, but no water flows into the container, you need to figure out where exactly this water goes. The first thing to check is. If it went bad, the water simply poured back out. If there is water in the intake hose, then the check valve is not to blame; you need to look for another reason.

If the hose is empty, it should be removed and the check valve inspected. It may happen that the pumping station does not pump water at all due to simple clogging of the valve holes. It is enough to rinse the device for it to start working correctly again.

Sometimes you need to replace the spring or the entire valve. Of course, after replacing a part or repairing, you should check the operation of individual components of the pumping station, and only then carry out final assembly and start-up of the device.

A check valve is required for normal operation pumping station. If its holes are clogged, you just need to disassemble the device and wash it

If there is water in the intake hose, you need to check all joints and pipes between the pump and the tank for leaks. Perhaps the water is simply leaking through a crack or hole. The damaged pipe must be replaced, and the leaky connection must be cleaned, sealed and sealed again.

If threaded connections pumping station become leaky and leaking, they need to be cleaned and resealed using suitable materials

There is a third reason why water does not go to the hydraulic tank: low flow rate of the water source. This happens if for some reason water does not flow into the water intake part of the well or well.

This happens, for example, as a result of silting or sanding. Or the pump for the source is chosen incorrectly; it pumps out water too quickly, and its reserves do not have time to be restored.

How to correctly select, install and connect a water intake is described in the article, which we recommend that you read.

The pump will most likely have to be replaced; there are special models for low-flow sources. To increase the flow rate of a well, it makes sense to pump it, i.e. wash away accumulated dirt. To flush the well, you should use a separate pump, and not the one that is equipped with the pumping station.

As an emergency measure, it is sometimes recommended to draw water from greater depths, but this recommendation should be used with caution. If the source is sandy, submerging the water intake or submersible pump too deep can lead to contamination pumping equipment and its serious damage.

Another one possible reason, through which the pump has stopped pumping water - wear of the impeller. In this case, it will rotate idle. You will have to remove the pump, disassemble it, wash it, replace the impeller, and possibly the pump housing. Sometimes it's easier to install a new pump.

If the above “diagnoses” are not confirmed, it makes sense to simply check the voltage in the electrical network. If it is too low, the pump will turn on, but will not be able to supply water. It remains to establish a normal power supply so that the pumping equipment functions in the desired mode again.

#2: The device turns on, but does not work

This happens with pumps that long time were not used (for example, in winter period). Since the clearance between the impeller and the housing is small, these elements, being stationary, can simply “stick” to each other.

When turned on, the pump will hum normally, but the impeller will remain motionless. In such a situation, the device should be turned off immediately.

The gap between the impellers (impeller) of the pump should be small. If the wheels are worn out, the gap will increase and the performance of the device will decrease, so it is better to replace the wheels with new ones

Dealing with this problem is not difficult; you just need to turn the impeller a couple of times with your hands. If, after switching on, the pump resumes operation, it means that the obstacle has been removed.

Of course, before starting operation, it won’t hurt to flush a pump that hasn’t worked for some time. Sometimes the impeller has nothing to do with it, the capacitor has simply failed. The damaged element must be replaced.

A burnt capacitor is a common cause of pumping station breakdowns. It is not difficult to replace it with a new element with suitable characteristics

#3: The pumping station operates jerkily

This behavior of equipment is most often typical for situations when problems arise with the pressure inside the hydraulic tank. First of all, you need to check the behavior of the pressure gauge. If the pump turns off as expected when water flows in, but soon there is a sharp drop in internal pressure, the problem should be looked for internally.

Most likely, the membrane in the accumulator has broken. It’s easy to verify this: if you open the nipple located on the “air” side of the container, water will flow out of it, not air.

The hydraulic tank should be dismantled, carefully disassembled, the damaged membrane should be removed and replaced with a new one, exactly the same. Trying to somehow repair a damaged liner is usually useless; it will quickly deteriorate again.

The sequence of work to replace the hydraulic tank membrane is demonstrated in the photo selection:

Image gallery

Any malfunction of the water supply system at home is the result of an error by the organization or individual involved in its implementation. In this case, the homeowner has a good chance to learn from his mistakes by repairing the electric pump with his own hands and, with a “successful” set of circumstances, improve his health by carrying water manually for some time from the nearest water source.

Rice. 1 Well pump assembled

This sequence of actions applies to all types of pumping equipment, regardless of the location and method of installation. It should be noted that the power supply system of the pump, apart from the wires switched by switches, does not have complex circuits, so if the submersible water pump does not pump water, but starts and hums, problems with the supply of the required supply voltage in the vast majority of cases can be eliminated.

If the water doesn't pump drainage pump or a well model, it may not start if the built-in or external condenser is faulty and will require repair and replacement.

First of all, repair of electric pumps should begin by turning off the supply voltage, removing it from the water intake source and disconnecting the outlet hose.

When reconnecting, the reasons why the pump does not work can be divided into several areas according to the location of the manifestation - we will consider them below.

Rice. 2 Water supply scheme for a private house

Malfunctions of pump protection systems

Usually correct assembled system water supplies and high-quality pumps have devices that prevent them from operating in idle move.

In the event of a malfunction of such protective devices: borehole dry-running relay and float switches of drainage, well or fecal pump, the devices can operate in the absence of water.

Sometimes the float switch of wells or drainage pumps due to improper installation, it does not fall along with a drop in the water level (it falls on a hillock or clings to a protruding object) - this leads to the electric pump operating in idle mode and its further failure.

Vibration pumps, which usually do not have external protective devices connected to the system, operate for a long time without water after its level drops, they can fail in the absence of built-in thermal protection.

Depressurization or breakage of the water main

The malfunction will help to identify the removal of the deep pump from the water intake source and connection to the supply voltage on the surface. If the pump, lowered into the water for testing, pumps water with the required pressure, then you should look for a leak at the place where the hose is connected to the outlet pipe or in the pipes that are laid underground for regular water supply at home (in a house, a leak can be easily noticed by the presence of water on the floor in a room with pumping equipment).

Mismatch between pump parameters and water intake source

During the dry season or with a sharp increase in water consumption, a situation may occur when the well or well does not have time to fill (the flow rate of the source is too low for normal operation of the pumping equipment). In this case, the electric pump will operate in dry running mode for some time in the absence of a similar relay or float switch in the system.

Clogged water intake system

A very common reason for the lack of water when the pump is running. Similar malfunctions can occur during the installation of pumping equipment: dirt and foreign objects can penetrate into the pipes. During operation, the screens and replaceable filter cartridges become clogged.

The filters and impeller of the impeller of submersible devices need regular cleaning during operation - if this does not happen, over time they become clogged and the operating pump hums, but does not pump water or does so with low pressure.

A situation often occurs when the pump actuator stops completely when clogged - it does not rotate. Working wheel, the vibration pump piston does not move. A clogged well or drainage pump removed from a water intake tank does not pump water when turned on superficially - do-it-yourself repairs will require disassembling and further cleaning of the device mechanism.

The pump has failed

The biggest problem that can happen to an electric pump is the burnout of the winding, and the device usually cannot be repaired (rewinding the winding with your own hands is difficult, and in a workshop the cost of work and materials will not be comparable to the price of the electric pump).

With this malfunction, the electric pump will hum, but will not be able to pump water.

Sometimes the impeller of downhole and well pumps, the check valve system fails (they will not let water through) and the piston ring of vibration models.

Due to constant vibrations during operation, vibration pumps are subject to loosening and unwinding of the mounting mechanism of the composite body, the fixing nuts of the check valve and the piston. These factors can lead to the loss of functionality of a working electric pump, which will hum but not pump water.

Violation of operating rules submersible pumps, installation errors plumbing system, a sharp increase in water intake and a decrease in the flow rate of a well or well can lead to the hum of a working electric pump, in which water will not flow to the consumer. In most cases, you can repair electric pumps yourself if you remove the device to the surface to accurately determine the problem area.

The continuous supply of water to the house depends on the stability of operation hydraulic equipment. The failure may have different reasons, both structural and operational. Many of them can be eliminated independently, so when the pumping station does not pump water, it is worth carrying out timely diagnostics of the main components.

No pressure

The pump is not always able to reach operating mode. In fact, the liquid enters through the outlet pipe, but it does not have time to reach the maximum value in terms of the number of atmospheres. Accordingly, the upper limit of the parameter is not reached, although no shutdown occurs and the pumping station is operating.

The phenomenon may be a consequence of the following events:

• reduced voltage supplied to electrical appliances;
• low power pump or the presence of operational wear of mating structural elements;
• water loss due to poor-quality connections at technological joints, as well as a possible breakthrough of a pipe or one of the elements hydraulic circuit;
• airing of pipes, typical for certain models of surface pumps.

Parts exhaustion or low power

It happens that a pumping station does not pump properly due to the fact that its operational characteristics are not capable of achieving the tasks assigned to it.

The parameters were initially selected or calculated incorrectly. The following values ​​were not taken into account in the calculations or resulted in a large error:

• the height of the water column from a well or borehole;
• level of consumer accommodation;
• water pipe diameter;
• depth of liquid intake, etc.

Equipment that is used for a long time may show signs of wear and tear:

• the impeller changes to geometric parameters;
• cracks or corrosion effects appear on the body;
• vibration pump membranes are damaged;
• rubber elements lose elasticity and minimize tightness.

In such situations, the pumping station does not gain the necessary force for full operation, but partial supply will be carried out. The upper pressure threshold cannot be reached. In this case, the hydraulics can function without stopping, which can lead to rapid failure of the electrical part.

A radical solution to the issue is the complete replacement of the water supply complex with equipment with the required characteristics.

You can also lower the set highest pressure value. If any breakdowns are detected, it is enough to carry out visual diagnostics and purchase repair kit gaskets or Supplies. If possible, the damaged housing is strengthened with sealant or epoxy resin.

VIDEO: Water supply station. Main malfunctions, causes and recommendations for selection

Leak detection

Let's figure out why the pumping station is not in full compliance performance characteristics does not issue desired result. The most likely situations are the presence of leaks in the circuit.

The reason lies in the depressurization of the pipeline:

• shut-off valves are leaking;
• the pipe is damaged due to corrosion or mechanically;
• the fastening in the connecting joints has weakened due to loosening of the clamps or insufficient sealing of the unit.

It is necessary to conduct a thorough inspection of the entire length of the water supply system from the intake point to the consumers.

Low tension and airing

The culprit that the equipment does not pump the required volume of liquid may be low voltage in the electrical network. We measure the current value and, if necessary, install a stabilizer.

The problem with surface pumps is the possible penetration of air pockets. This often happens in systems that do not have ejectors. The event occurs due to the fact that the water goes lower to the place where the check valve is installed. Depressurization of the pipe may occur at the junction with the pump or in the area located between the pump and the intake section.

Lack of liquid at the pump outlet

Owners autonomous water supply may encounter a situation in which, after starting the pump, liquid is not supplied to consumers. In fact, the system shows no signs of operability, and the pumping station does not pump water. In such cases, you should do the following:

• the presence of voltage in the network that approaches the house is monitored;
• check the current supply to the pressure switch and to the pump motor, which is not visually damaged, but does not pump water;
• Visual inspection of the cable is carried out to detect damage;
• We use a tester or multimeter to measure the presence of electricity, after first removing the cover from the relay, you will also see possible burning of the contacts that interrupt the circuit;
• if the current reaches the relay, and then the electrical parts do not work, then the culprit may be the electric motor, so it is necessary to unscrew the cover on the boron contacts (“box” on the motor) and determine the integrity of the unit;
• If you notice the characteristic smell of a burnt winding of an electric motor, you should send it in for repair, since it will not be possible to rewind the winding yourself.

It must be taken into account that at each type of station (surface or deep well pump) various or general negative phenomena may appear.

VIDEO: Why the station constantly turns on and off

Common challenges for outdoor equipment

Design of classical type pumping station models, with installed pump on the surface, can have three types:

• the ejector is built into the pump design;
• the ejector is located outside the structure;
• installation of an ejector is not provided.

Problems may be of the following nature:

• There is no water in the suction pipe. You must first fill the water surface pumps, without an ejector. Otherwise, the liquid supply will be prevented. If the liquid was poured in, but subsequently “left”, then this is evidence of depressurization at one of the joints or a poor-quality check valve.
• Violation of the tightness of the suction pipe connection. In this case, unauthorized pumping of air into the system occurs. It is important to visually inspect the joints and the functionality of the input filter.
• Problems with check valve. Not only the valve can become clogged, but also its strainer. The reason is the shallow depth of the well or borehole, which leads to clogging with sand, silt or clay. It is enough to lift the intake part from the depth and carry out cleaning.
• Impeller jamming. It happens that after a long break in work, the impeller becomes fixed in one position. The engine power is not enough to turn it. It is enough to manually rotate the shaft several times around its axis to relieve tension.

• A burnt capacitor is also common cause problems with the pump. During the start, a characteristic sound will be heard in which the impeller does not rotate.
• Decrease in water level. The lack of water on the consumer side often indicates a decrease in the liquid level in the well. This phenomenon may be seasonal for certain regions.

For a sufficient volume of water, it is necessary to correctly determine the flow rate before casing it and, accordingly, select the appropriate equipment.

• A large number of abrasive particles leads to rapid wear of certain elements. The housing or passage channels, as well as valve seats, may be subject to wear. The impeller is also subject to wear. The problem can be eliminated by replacing worn out elements or the unit as a whole.

It is worth considering that in some cases the problem can be complex. In such a case, there will be several reasons, and they will have to be eliminated sequentially.

VIDEO: Why the pumping station does not pump water