The pumping station is humming and does not pump water. Pumping station: possible malfunctions and their elimination

Pumping stations are an excellent way to ensure autonomous water supply. They entered our existence quite quickly and hold their positions well. Domestic pumping station provides
automatic maintenance of the required pressure in the water supply system by independently turning on and off as water is consumed. But malfunctions of these stations occur quite often. Some of the malfunctions are related to the nature of the medium - water and electricity - rapid corrosion metal parts. Submersible pumps, electric boilers and other equipment are also susceptible to this disease. If the parts of the station are damaged by corrosion, then they only need to be replaced and, if possible, eliminate the cause, for example, check the grounding of the pumping station. Let's look at typical faults and methods for eliminating them.

First, let's look at the structure and operating principle of a household pumping station.

Legend in Fig. 1-pressure line support, 2-faucet, 3- check valve, 4-pressure switch, 5-hole for filling water (Silverjet does not have one), 6-pressure line, 7-pump, 8-line filter, 9-suction line, 10-hydraulic storage tank, 11-water, 12-check valve with mesh, 13-cap covering the nipple, 14-hole for draining water.

The surface centrifugal electric pump consists of from a single-phase asynchronous motor and pump part. The electric motor consists of a finned housing, a stator, a rotor, a capacitor box and a closed protective casing fan To protect the motor from overheating, a thermal relay. The pump part consists of a housing, an impeller and a built-in ejector. Pump housing, in
depending on the model of the pumping station, it is made of cast iron, glass-polypropylene or of stainless steel. The hydraulic accumulator consists of a steel tank and a replaceable membrane made of food grade ethylene-propylene
rubber. The hydraulic accumulator has a nipple for pumping air into it under overpressure. The pressure gauge serves to visually monitor the pressure in the water supply system, and the pressure switch determines the upper and lower pressure levels, upon reaching which the pump is turned off and on.
The pumping station is connected to the power supply via a cable with a plug having a grounding contact and a socket with a grounding contact. After installing and turning on the pumping station, water fills the accumulator and the water supply system. When the water pressure in the system reaches the upper limit of the pressure switch setting, the electric pump turns off. When you open the water tap, at the first moment of time, water is consumed from the accumulator. As water is consumed, the pressure in the system drops to the lower limit of the pressure switch setting, after which the electric pump turns on again. Water flows to the consumer and simultaneously fills the accumulator. When the water pressure reaches the upper limit of the pressure switch, the electric pump will turn off again. Cycles of turning the pump on and off are repeated until water is removed from the system.
For correct pumping station operation it is necessary to use a check valve on the suction line with mesh filter rough cleaning water.

Recommendations for installing a pumping station. Use plastic pipes of a certain hardness on the suction line, metal pipes or hoses reinforced for vacuum (not to be confused with reinforced for pressure) in order to prevent their vacuum compression during suction.
8.1.2. If plastic pipes or hoses are used, avoid bending or twisting.
8.1.3. Seal all pipe connections well (air leaks negatively affect the operation of the pumping station).
8.1.4. For convenience when servicing the pumping station, it is recommended to use quick connectors(For example,
“American”).
8.1.5. The suction pipe must have a check valve with a mesh at the end (Fig. pos. 12) when suctioning from the well, and also, if small mechanical particles can enter, a main filter in front of the pumping station (Fig. pos. 8).
8.1.6. The end of the suction pipe must be lowered into the water to a depth of more than 30 cm from the minimum water level. It is also necessary that there be a distance of more than 20 cm between the end of the suction pipe and the bottom of the tank.
8.1.7. It is recommended to install a check valve (Fig. 1, item 3) on the outlet pipe from the pump to prevent water hammer when turning the pump on/off, and a tap (Fig. 1, item 2), the setting of which is described in paragraph 12, b. For Silverjet, it is possible to fill the pump with water, since there is no filler hole.
8.1.8. Secure the pumping station in a fixed position.
8.1.9. Avoid large quantity bends and taps in the system.
8.1.10. When suctioning from a depth of more than 4 meters or when there is a horizontal section longer than 4 meters, use pipes with a larger diameter to improve the operation of the pumping station.
8.1.11. Protect the pumping station from running without water. If there is a risk of operating the pumping station without water, contact your dealer for advice.
8.1.12. Ensure that water is drained from all points in the system if there is a possibility of it freezing in winter. To do this, provide drain taps, paying attention to check valves that may be in the system and prevent water from draining.

Fixing the pump
9.1. The pump should be installed on a level area, close to the water source.
9.2. In the room (pit) where the pumping station is located, it is necessary to provide ventilation to reduce humidity and air temperature (max. air temperature 40°C).
9.3. Position the pumping station, observing minimum distances 20cm from the walls to provide access to the pumping station when servicing it.
9.4. Use pipes of the appropriate diameter.
9.5. Mark holes for mounting the pumping station on the surface on which it will be installed. Drill holes to mount the pump.
9.6. Check that the pipes are not under mechanical stress (bending), then tighten the fastening screws.

Read more about choosing and installing a pumping station for autonomous water supply to a cottage or private home.

Pumping station design

1001 Pump housing 1002 Bolt 1003 Bolt 1004 Gasket 1005 Nozzle 1006 Ejector gasket 1007 Diffuser J Ejector 1008 Impeller housing 1009 Locking nut 1011 Impeller 1012 O-ring 1013 Mechanical seal

1014 Mechanical seal 1015 Front engine cover 1016 Bolt 1017 Motor bearing 1018 Rotor 1019 Pin 1021 Motor housing 1022 Stator 1023 Stator winding 1024 Engine support 1025 Wire 1026 Washer 1027 Engine rear cover

1028 Bolt 1029 Fan 1031 Fan cover 1032 Terminal box cover 1033 Terminal block 1034 Capacitor 1035 Bolt TPT1-24 CL Horizontal membrane expansion tank TPG - P Pressure Gauge TPS2-2 Automatic pressure switch M Membrane TFH50 Threaded hose 1" (50 cm)

The main causes of malfunctions and repair of the pumping station

1. Engine doesn't workNo supply voltage, fuse blown, jammed Working wheel.

Check the diagram electrical connection pumping station. Clean the pump. Turn the fan impeller; if it does not spin, the engine is faulty (jammed). Do not turn on the station until the cause is eliminated.

Check the contacts of the pressure switch. Check the capacitor.

Before you begin repairing the pump, you need to drain the remaining water from it and disconnect all connected devices: expansion tank, pressure switch, pressure gauge and others.

The housing contains a diffuser and a guide connected to each other.

If the cause of the hydrophore malfunction is the breakdown of these parts, then you simply need to replace them with new ones and reassemble the hydrophore in the reverse order.

If they are not the cause, then you need to look for a fault in another part of the pump.

The rear part of the pump consists of the electric motor itself, on the shaft of which an impeller is installed - the main mechanism that allows the pump to pump water. The engine is attached to the console, and a special ceramic seal prevents water from leaking through the shaft. After you remove the impeller you will have access to the oil seal.

2. The engine is running, the station does not pump water
There is no water in the station pump. Air has entered the suction pipe. The suction or supply pipe is clogged. The station operates "dry"

Check the position of the water level. Eliminate all leaks in the pipeline. Clean the suction line. With a long horizontal pipeline, an air lock may form in the middle of the pipe. It is necessary to fill the entire pipeline with water (possibly under pressure) to eliminate air lock. To exclude this, horizontal section The pipes should always have a slight slope towards the water intake. Eliminate the causes of dry work

3. insufficient water supply
Air is trapped (for example, the level in the well has dropped below the intake pipe), the pump or pipelines are clogged. Air in the suction line.

Clean the pump and pipelines. Eliminate leaks. Even a small air leak leads to the station being inoperable.

There may be a crack in the parts entrance structure pipeline (angles, American) as a result of corrosion. Replace damaged fittings.

4. The station turns on and off too often
The expansion tank diaphragm is damaged. Absence compressed air in the expansion tank or low pressure. The check valve is open due to blockage by a foreign object.

Replace the membrane or expansion tank. Again, due to corrosion, cracks may appear in the tank body. Pump air into the expansion tank and check the pressure with a pressure gauge. Unblock the check valve.

5. The station does not create the nominal pressure
The pressure switch is adjusted to too low a pressure. The impeller or supply line is blocked. Air entering the suction line.

Adjust the pressure switch. How to adjust is described below. The inlet hole of the pressure switch may be clogged - clean it.
Turn off the power, remove and clean the pump or supply pipe. Check the connections on the suction line for tightness. Check that there are no elbows or
reverse angles.

6. The station works without switching off
The pressure switch is set to too high a pressure.

Adjust the pressure switch.

If you are interested in repairing a pump such as Malysh, Aquarius, Brook, Neptune, Kashtan - a detailed description.

Pressure adjustment

If the adjustment is incorrect, the pump will not turn on or will not turn off. Therefore, unless absolutely necessary, you should not change the settings of the pressure switch. The case of “improper operation” of the pumping station due to independent incorrect adjustment of the pressure switch is not covered by warranty! Also, the product is removed from the warranty if the components of the pumping station fail due to improper self-adjustment pressure. If it is necessary to change the pressure in plumbing system, its limit levels can be changed by adjusting the pressure switch.

Before changing the switching pressure of the pumping station (lower operating pressure), it is necessary to adjust the air pressure in the hydraulic accumulator. Before this, it is necessary to disconnect the pumping station from the power supply and drain all the water from the accumulator. The air pressure in the accumulator is adjusted through a nipple using a car pump with a pressure gauge or a compressor. The air pressure in the hydraulic accumulator must correspond to 90%..100% of the required switching pressure of the pumping station.

The pressure switch of the pumping station is configured to operate the system in the operating pressure range of 1.5...3 atm. To change the pressure on or off of the pumping station, remove the cover of the pressure switch by unscrewing the plastic screw and change the tightening force of the corresponding relay springs. Adjustment of the pump activation pressure (the lower value of the operating pressure) is carried out by rotating the nut P. To increase the activation pressure, it must be turned clockwise, to decrease - counterclockwise. Adjustment of the range between the lower and upper values ​​of the working pressure is carried out by rotating the nut ΔP. To expand this range, it must be turned clockwise, to narrow it - counterclockwise. After changing the adjustments, you should turn on the station, which has been previously filled with water, into the electrical network. Pressure control is carried out using the pressure gauge of the pumping station.
ATTENTION!
When adjusting the pressure switch, the upper value of the operating pressure of the system should not exceed 95% of the maximum possible pressure at the outlet of the pumping station specified in technical specifications. IN
Otherwise, the electric pump will work without turning off, which will lead to its rapid failure.

Also note that pumping station hydraulic accumulator requires periodic maintenance. Water always contains a small part of dissolved air, and this air gradually reduces the useful volume of the bulb (rubber membrane) in the accumulator. On large-capacity hydraulic accumulators, as a rule, there are special valves for releasing this air; in small hydraulic accumulators, which are usually equipped with household pumping stations, there are no such valves, and to remove air from the membrane, a simple operation must be performed every couple of months.

1. It is necessary to turn off the power to the pump and drain all the water from the accumulator; it is best, of course, to provide a special tap for this, or use the tap closest to the accumulator.

2. The procedure from point 1 must be done 2-3 times in a row.

And please do not confuse the hydraulic accumulator and the water storage tank, these are different devices, the hydraulic accumulator is designed to reduce the number of pump starts, and as a result increase its service life, as well as to protect against water hammer; in the event of a power outage, the hydraulic accumulator will of course supply water for some time you with water, but I wouldn’t count on much. In case of power outages or water supply breakdowns, a storage tank is needed.

1300 rubles Visit of a specialist in Bataysk to eliminate a malfunction in the operation of an autonomous water supply system in a residential building or apartment.
1600+19 r/km intercity Master visit to others settlements Rostov region to eliminate a malfunction in the operation of an autonomous water supply system in a residential building or apartment.

If your submersible pump does not pump water pump or automatic water supply pumping station - do not leave the equipment under voltage! Unplug the pump, find your phone and dial our number:

Installers And repairmen By service equipment.

Chinese manufacturers issued the service center a certificate of conformity. This gives us the right not only to install and service certain Chinese equipment, but also to issue a conclusion from the service center about the cause of equipment failure.

Inga wrote on 01/29/2018 at 08:50

I am from Rostov, this is the second time I have contacted this company and for the second time they have helped me out, despite the bad weather and weekends. It’s also nice that they think through everything down to the smallest detail and when you tell us the brand of the pump, they take with them all possible spare parts for it. Such a thoughtful approach is very rare these days. By the way, in Rostov at the Screwdriver SC, they kept me busy for half a day on Friday, waiting for a call, and then they offered to postpone the repair to Monday. And then the master arrived on Saturday morning and did everything. Thank you

We will arrive at a time convenient for you, find the problem and fix the problem!

If the water pressure is low.

If the pressure, the water pressure on the first floor is good, but on the second floor there is very little flow.

If it's cold the water is flowing normal, but barely hot.

We know how to fix it!

If the pump hums, but does not pump.

If the pump makes a lot of noise during operation.

If the time has come service equipment.

Call and just talk to our specialist. Tell us about the problem. It happens that half an hour is enough to fix a problem, but people suffer inconvenience for years due to low water pressure!

As soon as possible with high quality We will carry out repairs: water well submersible pump, surface centrifugal pump, drainage pump. We will replace deep well pump in a well up to 120 meters deep. Set up the automatic control unit. Cottage, high-rise building, office building- doesn't matter. Do I need to change circulation pump, or install a pump to increase water pressure in a private house or apartment - the employees of the NaBBat service center will do this professionally, quickly and inexpensively

What to do if it is impossible to fix a pumping station malfunction on site. We arrived at the site when called and saw that the pump had been brought to the point of needing major repairs! And it can only be properly repaired in a stationary workshop.
WE WILL DO EVERYTHING OURSELVES
We will dismantle and deliver the pump to the workshop, repair, deliver and install it in place, connect the pumping station and carry out the necessary commissioning work.
This service is for wealthy clients.

You can bring and repair the well pump yourself to our service from 9 a.m. to 8 p.m. at the address: Bataysk-Zapadny (Koysug) st. Armavirskaya 29

Call ahead! We can be on the road!

If an automatic water supply pumping station for a home has worked for more than four years in a damp basement or in a “pit” on the street, then its technical condition determines the replacement of many components. This is a hydraulic accumulator that has become a rusty piece of hardware, a flexible hose that threatens to flood any room, and a pressure switch with burnt contacts and a clogged hole. Plus complete disassembly engine for replacing bearings and mechanical seals, oil seals. Repairs will cost the cost of a new pumping station! Why repair THIS?

We will select you a new pumping station with the appropriate parameters. There are always several in stock the best products, at a price below the market price!

If a client decides to buy a pumping station or submersible pump from us, we will take the product out of the box in the presence of the buyer, install the “purchase” on the stand and check it in test mode!

This is a gift from the company. There is no need to pay for this!

The WATER SUPPLY SYSTEM will be promptly restored and the pressure in the taps will correspond SNiP 2.04.02-84 clause 2.26. The minimum free pressure in the water supply network of a settlement with maximum domestic and drinking water consumption at the entrance to the building above the ground surface should be taken for a one-story building of at least 10 m; for a higher number of floors, 4 m should be added to each floor.

THE DEPARTURE OF THE EMERGENCY Crew is paid according to the current price list and for January 2020 is:

Calling a master in the city of Bataysk at a time convenient for the master—1,300 rubles

Calling a specialist in the city of Bataysk at a time convenient for the client (7:00 - 22:00) - 3200 rubles

Departure of the master to other localities Rostov region at a time convenient for the master - 1600 rubles + 19 rubles/km intercity

Departure of the master to other localities of the Rostov region at a time convenient for the client (7:00 - 22:00) - 3800 rubles + 19 rubles/km intercity

What are the responsibilities of the called emergency crew master?
About the same thing as what is the responsibility of emergency doctors - if possible, prevent the patient from dying!
In our case - repair, adjustment, maintenance of the customer's installed pumping equipment, without replacing spare parts! Usually, with timely maintenance, this is enough! An honest, competent master will not change just anything! If necessary replacement of spare parts and components “on site” be made for an additional fee as agreed with the customer and is NOT INCLUDED IN THE PRICE OF THE CALL OF THE MASTER!
Global reconstruction of the water supply system IS NOT INCLUDED IN THE PRICE OF CALLING A MASTER TO THE Emergency Brigade!
For alteration, reconstruction, improvement of the water supply system at the site, the visiting specialist will draw up a separate estimate and, after agreement with the customer, similar work will be carried out!

Single pensioners, large families— discounts, gifts and special conditions to carry out work from the NaBBat service center

Please clarify any questions you have from 8:00 to 20:00 by phone:

The Chinese also gave us a certificate of compliance with their high requirements for diagnostics, installation and repair of pumping equipment from 4WATER

We guarantee maximum desire to do our work in accordance with the standards of Christian morality and in the shortest possible time. When you contact our company again, you will receive a guaranteed 10% discount on the work performed. Upon completion of the work, the customer is obliged to check the quality of the work performed and has the right to monitor the progress of the work performed (video recording will help him) and if everything is fine, sign the acceptance certificate for the work performed. Additional guarantees and wishes of the customer are negotiated and specified in the acceptance certificate.

Almost all owners are familiar with the water station country houses and dachas, because it is precisely this that allows them to be independent from the centralized one. But not everyone knows what to do if the unit has stopped performing its direct functions - it does not build up pressure and does not turn off in time. That is why, in order to reduce the discomfort from a station breakdown, we will talk about the most common causes of the indicated malfunctions and figure out how to properly eliminate them on our own. Further to your attention not only theoretical basis, but also a useful video of execution repair work.

How does pressure affect the operation of the station?

Why are pressure indicators generally important for the functioning of a water station? In order to understand this issue, let’s get acquainted with the structure and operating principles of the unit.

The main component of the station is the pump, thanks to which water is pumped. Its engine has one serious drawback - every time the pump is turned on, it experiences an overload. As a result, when the station is started frequently, the engine quickly becomes completely unusable. To prevent such a negative phenomenon, it is necessary to reduce the number of pump starts - for this, the station is equipped with a practical hydraulic accumulator in which water accumulates.

Construction of a water station

The pressure to fill the tank with water is created by the force of air. However, this operating scheme does not make it possible to use level sensors, so the switching on and off processes are regulated by the pressure in the water supply. For this purpose, the equipment is equipped with another important device - a pressure switch. As a result, the system functions in this way: as soon as the volume of water in the accumulator drops to a critical value, the pressure drops to a minimum level and the relay turns on the pump, and when the tank is completely filled, the pressure rises to a maximum and the relay turns off the pump.

But sometimes it happens that the pump turns on very often and does not turn off. The reason for this phenomenon is low pressure in the system. Most often, a water station cannot gain the pressure it needs for the following reasons:

• drop in pump power;
• insufficient voltage in the electrical network;
• leaks in the water supply;
• pump airing;
• accumulator problems.

We propose to consider each of these reasons in more detail.

Low pump power

Before purchasing a water station, the required pump power must be calculated taking into account the depth of the well, the volume of water used and design features water supply But even this cannot protect against the fact that one day the power of the unit will begin to decrease.

Connecting a water station

Insufficient power pumping unit may be due to the following reasons:

1. Wear structural parts. Most often, the cause of the problem is imbalance of parts: grains of sand and small contaminants accumulate between the pump shafts, which loosen the elements of the unit and prevent it from working properly. full power. The simplest solution to the problem is to install purification filters at the water inlet. The second possible reason is deformation of the rubber valve. In this case, it is recommended to completely replace the part, since even after repair the valve will not allow the pump to develop the required power.
2. Decrease in water level in the well. The most rational, albeit costly, way to solve the problem is to purchase.

Advice. When buying a pump, choose a model with a power reserve in case, already during the operation of the water station, you need to lay additional pipes or install a new one household appliances operating using water.

Insufficient mains voltage

Power outages are absolutely not uncommon in rural areas. Unstable voltage in the network has Negative influence for all devices powered by electricity, and water stations are no exception: due to insufficient voltage, the unit cannot fill the accumulator tank full, and then gain the required pressure and turn off.

The optimal solution to the power supply problem is to purchase a source uninterruptible power supply and a voltage stabilizer: the first will provide the required level of power supply, and the second will protect the water station pump from sudden surges in voltage levels.

Advice. Before purchasing a pump and auxiliary equipment - a UPS and a stabilizer - it is recommended to measure the voltage in the network for 2-3 days using a multimeter to understand which devices are needed specifically in your case.

Leaks in the plumbing system

If the water station does not turn off, it means there is not enough water in it, that is, there is a leak somewhere in the water supply system.

Most often, metal pipes leak - they are affected by corrosion processes that provoke the appearance of holes. A temporary solution to the problem is to wrap the cracks with special plumbing tape. But, of course, as soon as the first opportunity arises, the deformed section of pipe should be replaced.

Leaks can also occur in the areas of threaded pipe connections and twisting of parts. In these cases, it is necessary to close the leaking areas with a sealing sealant: paste, fum tape or rubber rings.

Plastic pipes leaks rarely - if this happens, it is only due to damage from freezing. To solve the problem, wrap the pipe in the leakage area with plumbing tape and additionally close it thermal insulation material.

Most equipment problems can be fixed by yourself.

Pump airing

The water station stops gaining pressure and performing its functions if air gets into the working chamber or pump line. This phenomenon is not uncommon, especially if a surface pump is used: when the water in the well drops below permissible level or the suction hose becomes deformed, air inevitably enters the pumping system.

To squeeze out the air, you need to connect a special tee to the pump and release water under pressure. And subsequent actions will depend on the cause of the airing.

If the problem is in the well, you just need to lower the hose slightly below the original level or equip the pump float switch. If airing occurs due to deformation of the hose, you need to find all the cracks and close them with plumber's tape. In case of large holes, it is recommended to completely replace the hose.

Accumulator problems

Problems with the hydraulic accumulator of a water station can occur when:

• the pressure in the relay is set incorrectly - you need to slightly loosen the nut of the small spring, and then the unit will be able to gain the pressure it needs and turn off without delay;

Important! If loosening the nut does not help, then the relay itself is faulty and needs to be replaced with a new one.

• the rubber membrane is deformed - if water starts to drip when you press the air fitting, it means that the membrane has ruptured and should be replaced;
• there is no pressure in the tank - use a special air pump to pump air into the hydraulic accumulator chamber;
• the check valve is leaking - if the pump starts to leak when the station is not in use, it means that the check valve is clogged and needs to be cleaned.

So, here are the most common reasons why a water station stops gaining pressure and turns off in a timely manner. By understanding the nature of faults and how to eliminate them, you can not only protect yourself from discomfort due to unit breakdowns, but also free you from the need to call specialists to solve the problems mentioned above.

How to adjust the pressure switch of a pumping station: video

Water station: photo

The private sector is characterized by the presence of individual sources of water supply, which means that a pumping station is a mandatory attribute in this communication. The equipment is designed for high-quality lifting of water from a well and its transportation through water supply pipes. But what to do if the pumping station does not build up pressure and does not supply water to the pipeline? You will have to figure it out step by step to find out the reasons for such a failure (why this happens) and eliminate them.

For those who don't quite understand why it is so important that water equipment pump type accumulated a certain pressure, we suggest that you familiarize yourself with the principle of operation of the station and its structure. Thanks to such knowledge, it will be much easier to carry out repair work and eliminate the causes of possible breakdowns on your own.

So, the main “person” in the operation of a water supply station is the pump itself. It is designed to lift water and supply it to the system. But the pump, although a powerful unit, is quite sensitive. Its operation is based on constant engine switching on/off, which can have a detrimental effect on the life of the mechanism. That is, the pump will fail faster due to engine burnout. To prevent this from happening, many people equip the pump with a hydraulic tank, and this is already a water station.

The hydraulic tank (also called a hydraulic accumulator) is already responsible for the pressure in the system, creates its specified limits and controls the operation of the pump. In addition, it acts as a storage tank for water. That is, first the pump pumps water into the tank. After this, water is supplied to the pipes when the taps are opened from the reservoir. The pump is resting during this time. As soon as the pressure in the tank drops (namely, the water runs out), the pressure switch is activated, which activates the pump. Water is drawn from the well until the accumulator is completely filled. The cycle repeats itself over and over again. And if the pump does not turn off, it means there is no required pressure in the system. We need to find out why.

Important: the operating pressure indicators of the lower and upper limits on the relay are marked with symbols P1 and P2, respectively.

Causes of station malfunction

But it happens that the water station for water supply does not turn off. That is, water simply enters the tank, but there is no upper pressure. Accordingly, the pump does not turn off. It is not only possible to deal with such a situation with your own hands, but also necessary. And to do this, let’s look at the main reasons for the breakdown (why this happens):

• Pump motor power too low. Here, either the required power of the equipment was initially incorrectly calculated, or during the operation of the water supply system, changes were made in communications. For example, the water surface dropped or the configuration of the pipeline on the site was changed.

Important: to determine the power of the pump, before purchasing, you should always take into account the depth of the water surface in the well, the diameter of the pipes, the number of people living in the house and the purposes for which the water will be used. When purchasing, it is advisable to choose pump models whose engine power slightly exceeds the required one.

• Insufficient mains voltage. This situation is especially common in villages located far from the city. In this case, the pump simply cannot develop the pressure specified in the passport. This means that the pressure in the system will not rise. That is, the unit seems to be working, it seems to be pumping water, but it does not turn off. It is worth checking the output voltage in the network and the engine power according to the passport. For example, the pump motor is designed for a voltage of 220, but only 205 W is supplied to the network. Accordingly, the unit does not pump water at a given pressure and therefore does not contribute to increasing the pressure in the system. Here, either installing a good stabilizer or changing the pump to a more powerful model will help.
• Incorrectly set pressure switch. This small element controls the operation of the water station, regulating the lower and upper limits of the pressure in the tank. Most likely, the upper limit is set incorrectly. In order to lower the threshold P2 (upper pressure), you need to slightly unscrew the nut of the smaller spring. The indicator will decrease and the station will turn off on time.

Important: the large spring nut simply reduces the readings of both pressure limits, while maintaining the range between them.

• It is possible that the reason for the uninterrupted operation of the water supply station is the wear of the pump mechanism parts. This option is especially relevant for centrifugal pumps. Since the impeller of such units works with high speed, passing water through itself, then small particles of sand and other inclusions in the water also pass through the wheel blades. At this moment they work according to the principle sandpaper, abrading the pump elements. Accordingly, the pumping mechanism of the water station becomes loose and fails. That is, the pump works, but does not supply water in the specified volumes to the hydraulic tank. Accordingly, there is no upper pressure threshold in the accumulator. In this case, you will either have to replace the entire pressure wheel in the pump or buy a new unit. To prevent this from happening, it is better to buy pumping equipment with a special filter insert in the working chamber. Especially if the water contains sand or clay impurities.
• Leak in pipeline.

This reason for the malfunction of the water station is one of the most common. Moreover, there is often a hidden leak. That is, the pump works, pumping water, and does not supply it to the hydraulic tank in full. Somewhere water is leaking from the system. This is why there is no required upper pressure limit in the hydraulic tank. To identify the problem, you need to carefully examine water supply network, starting from the well water supply pipe to the hydraulic tank itself. If even the slightest drop is found, the pipeline section must be replaced. If a leak is found at the threaded connection, you need to strengthen the seal in this place. Good decision is the sanitary sealant "Tangit Unilok". Even if the material is overloaded, it gives high-quality shrinkage and does not damage the thread.

• Check valve leaking. Here the water simply flows back into the water supply system, preventing the pump from reaching the P2 mark. That is, there is no upper required pressure in the water supply, and the pump does not turn off. A clear sign of such a malfunction is the spontaneous turning on of the pump at night, when no one is using the water station. Typically, a check valve fails due to dirt accumulated in it. You need to either clean (rinse) the check valve or completely replace it.
• Rupture of the elastic element in the hydraulic accumulator. That is, a rupture of the membrane responsible for filling the tank and regulating the pressure in the water supply system. In this case, the pump works, almost reaching the upper pressure mark, and then turns off. But as soon as you turn on the water in the tap, the water supply station works again. In this case, it is necessary to check the spool through which air is supplied to the accumulator. Just click on its pin and watch it. If water starts coming out through it, it means that the tank membrane is torn and needs to be replaced. Or change the entire hydraulic accumulator. If it is dry near the spool when you press the pin, you should pay attention to the air pressure in the tank. Its indicator should be below the P1 mark (lower pressure) by 10% (approximately 1.5 atm.). If the indicator is lower, then you can simply pump up the air using a simple pump.

Self-priming pump: problems with pressure in the station

To operate a water supply system at shallow well depths, self-priming types of pumps are most often used. In this case, the reasons for the drop in pressure in the hydraulic tank and water supply may lie in the airing of the impeller and the working line of the unit. The reasons for air getting into the pump system can be:

Drop in water level in the well. If this happened, then most likely the pump hose took in air and sent it into the water supply. To correct the situation, you need to check the water level and lower the hose deeper if necessary.

The seal between the inlet pipe of the pumping equipment and the intake hose has become depressurized. Here it is necessary to tighten the nuts or strengthen the sealing gasket.

It is also possible that the pump at the start-up stage was filled not only with water, but also with air. In this case reliable operation there is no solid pump, and you will have to restart the equipment with a new fill of water. Sometimes you have to squeeze out the air plug from the pump. To do this, connect a tee to the suction line of the pump and pour water into it from a tank installed much above ground level. In this case, the pump must be on.

Thus, we have provided the most common reasons failures in the operation of the water station, namely the inability to reach the upper operating pressure in the tank chamber. Knowing these nuances of the station’s operation, you will be able to fix the breakdown yourself or at least identify the cause of the failure. And this is already half the savings of the family budget. After all, you never know what reason for the breakdown they will tell you in service center! No, no, and point out to the technician the true reason for the failure of your pump or hydraulic tank.

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When moving to Vacation home or a summer house, you will certainly need to take care of the level of comfort. First of all, you need to create or establish a water supply system that will effectively perform its main functions. Creating such a system is expensive, because the initial investment is quite high compared to connecting to shared networks water supply Savings will manifest themselves in the near future, since there will be no payment for water use.

Your own pumping station is not only savings Money, but also additional obligations imposed on the owner. Repair and periodic maintenance of the system will not take long, so the homeowner should be aware of how it is carried out DIY pump station repair.

Like the human body without a heart, the water supply system cannot function without a pumping station. Any autonomous water supply system must be connected to a well capable of supplying a certain area required quantity water.

People living in private houses extract water using pumps, since the depth of wells can sometimes reach several tens of meters. The pumping station is used to maintain constant pressure in the water supply system and pump liquid from one place to another.

What does it consist of?

The average pumping station has three main components, namely:

• pumping device;
• hydraulic accumulator;
• automation block.

Now let's look at each element in more detail.

Pumping device

Water supply stations are most often equipped with surface pumps, whose names indicate their location. They are installed in specially equipped xenon systems, or inside residential premises. Pumps are used with quite high power, since it is necessary for raising water from wells and transporting it to the house.

A small device is enough to service one home

Hydraulic accumulator

A hydraulic accumulator (also called a pressure accumulator) is metal device, the purpose of which is to maintain a certain level of pressure on a constant basis. The most popular is a model that is a small metal cylinder with an elastic membrane installed inside. During operation, the rubber membrane is deformed to a certain point. When work stops, it returns to its original position, displacing liquid from the cylinder.

Hydraulic accumulator device

Automation block

It is designed to promptly stop the operation of the device. It works like this:

• the pressure decreases to a certain point;
• the relay starts to operate;
• the pump comes into play and the accumulator begins to fill with water;
• Once the optimal pressure is reached, the operation of the device is suspended.

As you have already noticed, a pumping station is a combination of components and assemblies, the operation of which can also be done separately. In most cases everything the main components of the unit are installed on one housing, however, there are also models in which the pumping device is installed on a pressure accumulator. Device automatic control is also located on one body.

Automation unit for pump

Throughout warranty period There are practically no problems with the equipment during operation. But this does not mean at all that you will not have to deal with the need to troubleshoot various components. For a long time operational period any part of the mechanism can break, so you need to be prepared for anything that happens. Let's look at the possible causes of failure and options for resolving these problems.

Causes of breakdowns

Even the most reliable mechanism does not last forever, and this also applies to the pumping station. There are quite a lot of breakdowns due to which work is disrupted or stopped altogether. Here are the most common ones:

• membrane tank is broken;
• pump is broken;
• there is no liquid in the system;
• the automatic unit is damaged;
• no electricity and others.

Simplicity of household design pumping stations allows you to carry out diagnostic and repair work independently. Sometimes it is enough just to replace a non-working part. In some cases, it is necessary to resume sealing in the tank by sealing the crack, and sometimes even to determine the flow of electricity to the mechanism. Each specific case comes down to a single question - why is the pumping station not pumping water and how can the problem be solved? In unsuccessful attempts to identify optimal solution It makes sense to seek help from specialists.

How repairs are made

Repair of a pumping station - the most common problems

We will analyze in detail all common problems in work, possible causes of their occurrence and options for quickly eliminating them. with my own hands, without the help of specialists.

There is no water in the system, although the pump is running

The water has stopped flowing, but the pump impeller is operating normally. If such a problem occurs with your station, then read the following recommendations.

1. Carry out a thorough inspection of all connecting pipelines for breaks and cracks (even the smallest ones). Valve malfunctions are the main contender among all causes of malfunction. Check its condition for any external damage. For those who don’t know where the check valve is located: between the top of the well and the pipe. Foreign objects caught in this valve can easily break it. It may also be that the spring that controls the operation of the valve has broken or failed. To solve the current problem, a replacement will be required. If you find a large amount of dirt in the valve, remove it and clean it. In the event of a breakdown, complete replacement valve
2. The pumping equipment has not been used for a long time - because of this, water may disappear in the pipeline (just in the place between the pump and the well). To fill the void in the pipeline, you need to use a special filling hole.
3. Seasonal decrease in water level in the well. To solve this problem, it will be enough to lower the lower part of the pump a little lower into the well. Be careful when doing this, as submerging the pump too deeply can cause contamination. To prevent contamination, there are special filters that need to be equipped with the pump. You can also make them yourself.
4. Power outages can also lead to poor water supply. If the pump rotates but there is no water flow, check the voltage electrical network. For this you will need a power supply tester. The fact is that the rotor in the system will work, but due to low voltage the rotation speed will drop and this is no longer enough to move liquid from the well to the house.
5. Pay attention to the condition of the pump impellers. Over the course of many years of operation, they can become very worn out. To solve this problem, you will need to remove the pump impeller while disassembling the pumping device. In almost all models, the impeller is hidden under the housing cover, secured with two bolts. Long term operation will make itself felt, and unscrewing these bolts will become quite a difficult task for you. Thanks to the creators of WD-40. Having finally removed the housing cover and reached the impeller, carefully inspect it. If there is damage, it must be replaced, but there is one big “but”. The fact is that many manufacturers do not produce small parts separately, so you will most likely have to make a replacement. Alas, this is now the policy of manufacturers.

Important: Problem with low voltage especially relevant for residents rural areas. Therefore, before starting repair work, you must inspect it first.

The pumping station operates jerkily

There are several possible reasons, one of which is a malfunction of the automation unit. Its main component is a pressure gauge (this is a special device that measures pressure). The pressure gauge needle will make sudden movements from wall to wall of the pressure gauge during such inadequate jerky operation.

Damage to the membrane may well be the main cause of malfunction of station components. The operation of the membrane in a hydraulic accumulator was mentioned earlier.

The membrane can only be reached through a nipple installed in the rear side of the pump housing. Lightly press the nipple and you will feel a stream of air coming from it. Well, if instead of air you see a trickle of water, then the accumulator membrane needs to be replaced. To do this, you will need to disassemble the battery case.

Video - Replacing a pear in the hydrosphere

Another common reason bad work system - low pressure in the bulb. We are talking about a pressure drop in the area behind the membrane. The factory standard assumes a pressure of 1.8 at, but during operation the tightness of the pipelines and housing may be compromised, causing the pressure level to drop. The pressure level can be increased through a nipple installed in the back of the housing. If there are microcracks, this method will not help; a different approach is needed here - “ cold welding", thanks to which it is possible to repair the resulting cracks. If welding does not help or the cracks are too large, then the accumulator housing needs to be replaced.

What does a pear look like in a hydraulic accumulator?

Another, albeit quite rare, reason is that the automatic adjustment unit has broken down. In this case, only a complete replacement of the device will help.

Water supply is intermittent

The cause of intermittent water flow will most likely be air entering the pipeline. Air entry most often occurs in the section between the inlet and suction pipes of the device. Troubleshooting can be done only by one method - you need to ensure complete tightness of all pipelines, including connections. If possible, lower the suction pipe slightly lower than the ground level.

The unit works continuously without stopping

The most likely causes of such a problem include an unregulated relay designed to fix the pressure level. The procedure for adjusting the pressure switch can be done by changing the position of two springs - small and large.

small spring

It is installed on the relay and is intended to equalize the pressure between minimum and maximum.

Big spring

This spring is installed on the relay to create limits for turning on or off the system.

Pressure switch device

During operation, the operation of the springs may be disrupted due to their premature stretching. As a result, the initially established indicators are lost. In addition, when long work There is a risk of wear on the moving parts of the pump, causing the pressure readings to drop.

Possible reasons for the malfunction of the adjusting relay include a decrease in the size of the hole in the relay; it is also called “output”. The narrowing occurs due to deposits located in well water. Clean the relay and the problem will go away on its own.

The pump does not turn on

The pumping station is powered by electrical energy, the absence or fall of which will certainly cause the device to stop working. Using an electrical tester, check the voltage level.

If there are no power outages, you need to look for the cause of the malfunction elsewhere. IN in this case this is a winding failure electric motor. The presence of breakdowns in the winding is accompanied by the engine stopping and the appearance of a burning smell (the insulating materials). Only a complete replacement of the electric motor will help solve this problem.

The pump makes noise, but the shaft does not rotate

With pumps that long time lay without work, such a problem may happen. This is due to the fact that due to downtime, the moving parts jammed over time (for example, they became stuck or rusted). Try to start the blocked impeller yourself. If everything worked out and you managed to turn it on, great, but if not, disassemble the pump and solve the jamming problem.

The combustion of a capacitor can lead to similar “symptoms”. It is installed in the terminal box of the unit. To identify and eliminate this malfunction, you will need an electrical tester.

Most often, the capacitor burns out in those engines that are connected using a three-phase circuit.

A little about relay adjustment

Do not forget about the seriousness of adjusting the relay - this is a delicate procedure that must be treated with extreme caution. One minor error in adjustment can lead to damage to the entire system, which means wasted time and money on repairs. In addition, the warranty does not provide for breakdown of the unit in such cases.

How to adjust the pressure switch

Initially, it is necessary to achieve the optimal pressure in the accumulator. This can be done by disconnecting the pumping station from the power supply and draining all accumulated liquid in the tank. Now, using a special compressor with a sensor, create the optimal pressure level in it. Then remove the cover over the relay, giving full access to the small and large adjustment spring.

Setting the minimum pressure is achieved by turning a large spring: to increase the indicator - clockwise, to decrease it - counterclockwise.

As you can see, you can handle most of the problems yourself, without the help of specialists. This will help you save money and, most importantly, give you a new experience in working with pumping stations.

Video - DIY pumping station repair

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