The pumping station does not supply water. Reckless: malfunction of the pumping station. What does a pumping station consist of?

The pumping station is the heart of the water supply system for a cottage or private home. This simple but functional device, capable of providing good pressure, can be purchased at retail by choosing the model that has the optimal characteristics. Pumping stations, when installed correctly, are reliable, stable, and do not require periodic maintenance. However, failures in their operation inevitably occur over time. Know the faults pumping station and ways to eliminate them are necessary for every owner of such equipment. In some cases, it is quite possible to carry out repairs yourself.

A pumping station is a complex of a pump, a hydraulic accumulator-compensator and automatic control. Such a system is capable of:

supply water to the home network and maintain the required level of pressure in it;
provide pressure regulation to supply water to the second floor or satisfy the maximum level of consumption;
protect the pipe system from water hammer, which can lead to the destruction of parts of the water supply system;
store a certain supply of liquid inside the accumulator, which will be useful when the power supply is turned off or the water source is depleted.

Specific engineering solution pumping station may be different. For example, for deep wells it is used submersible pump. When drawing water from a shallow well, use surface blower. The volume of the hydraulic accumulator may vary, depending on the consumption parameters calculated for a private home.

Automation and safety equipment

To understand how to quickly diagnose and troubleshoot problems, you need to know about the pumping station controls and the principle of its operation.

The causes of pump failure include dirt and mechanical suspensions. Therefore, it is necessary to install on the supply pipe coarse filter.
To avoid problems when the station does not pump water, it must be mounted on the supply pipe check valve. It will prevent water from going back into the well and prevent air from entering the working circuit.
- the main device for monitoring the operation of the station and the condition of the water supply network. Mounted on the outlet pipe, it shows the pressure and allows for instant assessment.
Pressure parameters are adjusted corresponding relay. It is included in the list of accumulator components and is responsible for turning the supercharger motor on and off.

Everything works quite simply. During initial start-up, the pump pumps water into the accumulator. Inside it there is a membrane, a rubber bulb. Filling with water and expanding, it compresses the air in the container. The sensor monitors the increasing pressure. When the set level is reached, the relay turns off the pump. The pressure gauge shows the pressure reached in the water supply. When a tap is opened inside the house, water enters the network, taken from the accumulator bulb. When the pressure drops below the configured limit, the relay activates the pump and the cycle repeats.

Malfunctions and methods for their elimination

Unfortunately, over time, the pumping station may begin to operate abnormally. It is impossible to avoid this, since eternal materials do not exist; oxidation and leakage processes In addition, dirt accumulates in the station components during operation. If the water supply system begins to work poorly, you should slowly check the condition of the pump unit and eliminate shortcomings that you can deal with yourself.

The pump does not turn on

There may be several reasons why the pump does not respond to start commands and does not start.

Checked power supply condition. The integrity of the power cable is assessed (there should be no insulation wear or fractures).
Being tested mains voltage. When low, the pump does not work.
Checked connection quality of contact groups(sockets, operation of circuit breakers).

If checks show that everything is in order, but cleaning the contacts did not bring results, the problem may be pressure sensor operation: it doesn't work. The hydraulic accumulator control unit is partially disassembled, the condition of the relay (contacts, springs) is checked, and if necessary, the parts are cleaned of corrosion and dirt.

If the pump does not start after the measures taken, the problem may be combustion of the windings. Such repairs cannot be carried out at home.

The engine makes a hum, but the pump does not start

If the station is idle for a long time, its owner may encounter a situation where, when turned on, the pump hums, but does not pump. The reason is the turbine impeller sticking, sticking to the housing. This problem is resolved as follows.

The station is disconnected from the power supply; it is necessary to close the inlet and outlet pipes.
Using drainage, it is necessary to drain the water from the supply system.
The pumping station is being partially dismantled.
The impeller is rotated manually or removed.
It is recommended to remove the impeller from the pumping station to thoroughly clean the internal surfaces of the housing and the part itself.

Advice! After long downtime may lose their properties and other functional elements. If you have already had to disassemble the station, it is recommended to check whether the oil seal or parts of the sealing system require replacement.

The pumping station operates jerkily and does not hold pressure

If the pump is turned on and off frequently (it runs jerkily), and also when the station does not hold pressure, it is worth looking for the source of the problem in the accumulator unit and pipelines. There may be several reasons:

violation of sealing;
low air pressure in the accumulator body;
water leaving the system through a check valve;
leaks when the rubber element is damaged.

The last problem on the list is the easiest to diagnose. If, when the spool or nipple outlet of the pressure control on the hydraulic accumulator is weakened, water comes out of it and not air, then the bulb needs to be changed. During long-term use, rubber (including due to chemical composition water and impurities in it) loses flexibility and may crack.

How exactly to replace the pear is done, you should find out from the documentation for specific model hydraulic accumulator. Individual manufacturers may use sealing systems that differ from each other, provide a unique arrangement of elements and membrane design.

Advice! Before such repairs, you need to purchase or order a bulb for a specific hydraulic tank model.

Monitoring accumulator parameters

If everything is in order with the bulb, and when you open the control outlet, air comes out of it, you need to check the correctness of the parameters of the hydraulic accumulator. Back pressure in the tank body checked with a pressure gauge. It is connected to the spool or nipple outlet of the hydraulic tank. If there is no pressure at the level of 1.5 - 1.8 atm, it must be adjusted. Usually the value shown by the pressure gauge is less. Air must be pumped using a compressor or bicycle pump directly through the control outlet.

Check valve malfunction

Another reason for the drop in pressure and the operation of the station in jerks is dysfunction check valve installed on the supply pipe. This node needs to be cleaned, check its functionality. If repair is impossible, you need to make a replacement, and then do everything again. commissioning works for the station.

Leaks and Leaks

The final cause of jerky operation is leaks and leaks. To make sure there are no water leaks, check all connections of incoming and outgoing pipes. If no deficiencies are found, then the problem is in the accumulator and air leakage. Checking the tightness of the housing is carried out as follows:

the soap solution is diluted;
soap emulsion is applied to problem points of the structure (welding lines of installation elements, places with abrasions, traces of corrosion);
leak locations are determined.

Advice! It is recommended to eliminate leak points using a welding machine. However, if you consider that such a DIY repair of a pumping station requires special equipment and skills, the holes found can be closed with a “cold welding” type compound.

The pump does not build up pressure or does not turn off automatically

Problems of pressure mismatch with the specified parameters and lack of shutdown are always associated with the operation of the hydraulic tank control relay. Salts are deposited on the elements of this unit; its contact groups may oxidize over time.

If the pump does not gain pressure, but turns off automatically - the relay can be readjusted, without having the skills to disassemble and clean contacts. This is done by searching through the position of the regulator and monitoring pressure indicators using a pressure gauge installed at the station output. In cases where the blower does not turn off for a long time, it is recommended replace relay. If this cannot be done, the station must be disconnected from the network, the control unit must be partially disassembled and all elements of the sensor structure must be thoroughly cleaned. It is recommended to pay special attention to traces of corrosion. You can get rid of them using special means.

Important! It is highly undesirable to operate a station that does not turn off automatically. This can lead to a very rapid failure of its functional elements or rapid breakdown of the pump motor and turbine parts.

The reason that the pressure drops or the pump often turns on in systems with water rising from the depths with a surface blower may be problems with the ejector. This unit has a plastic diffuser, which is extremely negatively affected by impurities in the water. If it breaks down, the ejector does not pump water, and the pump cannot cope with the task on its own. To check the condition of the diffuser and other elements, the entire assembly must be disassembled. Repair consists of replacing broken parts or thorough cleaning and reassembly.

The station does not pump water

The reason that the station has stopped pumping water may be its banal absence in the supply pipe. First of all, check Is the intake hose immersed in the fluid source?. The condition of the filter at its end is also assessed.

If everything is ok, check check valve status. Due to accumulated dirt, this unit may not open and block the access of water to the station system. Minimal repair of a check valve consists of disassembling it and thoroughly cleaning it. If individual structural elements are deformed or damaged, the entire assembly must be replaced.

The most difficult and troublesome breakdown is pump output. The impeller and housing wear out during operation under the abrasive action of mechanical impurities in water. At the same time, the maximum supply pressure drops, and at certain critical levels of wear, the pump stops pumping water.

You can inspect the impeller, measure the gap between it and the housing, and assess the degree of wear only after disassembling the pump. If during such an inspection it is discovered that the permissible parameters (given in the passport for the device) are exceeded, the damaged parts of the mechanism should be replaced.

In the most difficult cases you will have to change the body, which with certain pump designs can be a big problem that requires skills, knowledge, and money to eliminate.

Air in the pumping station

Another reason that the pumping station does not supply water or does not turn on when the idling prevention sensor is triggered is the presence of air in the supply pipeline. To eliminate this problem, even at the stage of equipment installation, it is necessary to provide a pipe for forced filling of the system. Until the inlet pipe is filled with water, the station will not work. In some cases, you can use a simple technique: pull out the supply hose, raise its end above the pump installation point and manually pour water into it.

Advice! To avoid the problem of air getting into the pumping station, it is recommended to buy a model with a so-called self-priming pump. It has a unit for automatic filling of the supply line, without human intervention.

What to do if the pumping station is frozen

As a conclusion, it is worth touching on the issue of resuscitation of the pumping station. Despite clear instructions for operating equipment only in a warm room, situations when the pumping station freezes do occur. Water can turn into ice:

inside the underwater pipe to the house, at the border of soil freezing;
in supply pipes coming from a well or well;
in the part of the pipeline immediately adjacent to the pump:
in the most difficult cases - inside the mechanics of the pump.

If, during an inspection of the condition of pipes and the pumping station, cracks in metal, plastic, and structural elements are found, the repair is reduced to disassembling the equipment, part of the water supply network and replacing damaged parts and pipes. However, when a liquid freezes, it does not immediately rupture the metal, and there is a non-zero chance of saving the equipment.

Important! Before defrosting work, the station must be disconnected from the water supply network, if possible, open the shut-off valves or unscrew the flanges of the problem area, creating vanishing points for expanding water.

The procedure for handling pipes depends on their type, as well as the tools and tools available. Leads can be defrost with boiling water, steel pipes warm up with a blowtorch. The temperature increase process must be gradual so as not to cause damage due to sudden changes.

Advice! Before pouring boiling water over the pipes, they should be wrapped in a cloth and poured with cool water. You need to start using a blowtorch carefully, slowly increasing the intensity of the impact.

The most effective, but long way defrosting pump mechanics – installation of incandescent lamps. The heating object must be placed in some limited space, for example, surrounded by a box turned upside down, the walls of which are 200 millimeters or more away from the heat source. After this, the lamp turns on, its power should be at least 100 watts.

Pipes can be heated heating cable , which is easy to purchase at any store that sells electric heating systems. By wrapping the frozen area and applying 220V voltage to the cable, you can quickly and safely defrost the system. Good results from using this method are also observed when working with pump mechanics.

For reliable operation, the pumping station requires correct installation. To guarantee long, trouble-free operation, you need to:

install the pump on a flat, rigid platform or support that does not allow vibration;
operate the station only at positive temperatures;
avoid overheating in the area where the pump is located (temperatures above 40 degrees), for which purpose it is rational to provide a blowing or ventilation system;
use only pipes of the diameter recommended in the documentation for supplying and discharging water, so that the pump can show its declared characteristics;
do not allow pipes to bend;
provide a drainage system for emergency drainage, as well as pipes for pouring water into the supply circuit.

If water is drawn from a shallow well by a surface pump, measures must be taken to ensure that the turbine impeller is always in the water. To do this, the end of the hose or pipe is immersed in water, making sure that as much of its length as possible is in the liquid. The best way will guarantee security equipping the intake line with a float. Its task is to raise and lower the end of the hose, constantly keeping it submerged in water.

The periodic system maintenance list includes control of pressure parameters. The air in the pumping station is checked through a spool or nipple outlet on the accumulator body. By attaching a pressure gauge to it, it is easy to see the indicators. Nominal pressure - from 1.5 to 1.8 atm. If there is insufficient air, air is pumped through the outlet using a compressor or bicycle pump.

The purpose of the pumping station is to provide water supply to private sector. The equipment is installed if there is no central highway nearby. Water is lifted from a reservoir or well. In order to save money, it is possible to carry out repairs and maintenance yourself.

Composition of the pumping station and purpose of parts

Pumping equipment consists of units connected together, these include:

Pump. Its task is to lift water from a reservoir and deliver it through a pipeline to its destination.
Hydraulic accumulator. Divided into 2 parts by a special elastic partition. One is filled with gas, and the other with water. The purpose of the unit is to maintain the required pressure level in the system during a temporary shutdown of the station.
. Its task is to keep the liquid from flowing back when the pump is turned off.
The control unit consists of a pressure gauge and a relay. These devices record the pressure level in the pipeline and control the operation of the system.
Power supply.

Before turning on the equipment, the upper and lower pressure thresholds are set using a relay. Fluid is supplied to the accumulator until the pressure in it is equal to the set upper value. After this, the pump automatically turns off.

When the tap is opened, liquid enters the pipeline from the accumulator, and the pressure begins to decrease. As soon as it reaches the lower value, the relay sends a signal to the pump to pump water again.

In the case of continuous fluid flow, the system does not turn off because the pressure is not able to reach the upper limit.

After turning off the taps, the equipment continues to operate in order to reach the upper threshold level, and then turns off. During the next switch-on, the pressure begins to rise again.

Problems and malfunctions of pumping stations and their correction

During operation of water pumps, various breakdowns occur. In order to carry out quality repairs of pumping stations, you need to know which components most often fail and how to troubleshoot. Whatever equipment is installed for a private home, breakdowns are always typical.

The pumping station does not turn off and does not build up pressure

The reasons are as follows:

Lack of water in the well. This should not be allowed, because there is a risk of engine burnout as a result of overheating. To prevent this from happening, a sensor is required that would send a shutdown command.
Insufficient highway traffic. The reason may be small pipe diameter, blockage or loss of tightness.
Check valve failure. It requires disassembly and troubleshooting.
Filter clogged. It needs to be cleaned or replaced.
Oxidation of relay contacts. The device is removed and cleaned of scale.
Development of the pump impeller. Water stops flowing upward. If it is not possible to replace the part, a new pump must be installed.
Low voltage in the network. As a result, the relay does not operate. A stabilizer connection is required.

Pumping station repair: turns on frequently

Frequent switching on has a negative impact on the operation of the device. Reasons may include:

Small volume of hydraulic accumulator. The stored water is used quickly. Due to its constant shortage, the pump has to turn on more often. To prevent this from happening, it is possible to connect an additional storage tank.
Incorrectly set relay. Frequent activation occurs because the pressure being formed in the accumulator is lower than that set on the device.
Check valve failure. There is no water shutoff, the liquid leaves uncontrollably, the voltage of the water flow in the system is constantly decreasing.
Membrane disruption. This leads to a sharp decrease in pressure when the tap is turned on.
The accumulator spool nipple does not hold. It needs to be replaced.

Air in water

The presence of air in the pipeline is a constant phenomenon, but a large amount of it leads to the flow of liquid through the tap in jerks.

This happens for the following reasons:

The water level in the well has dropped and the lower hose is above the surface. To eliminate this reason, you simply need to lower the pipe so that its lower part is completely covered with water.
Loss of pipeline tightness. Air leaks through the cracks formed. All butt connections need to be checked. Any gaps found require elimination.

The pumping station does not turn on

If the pumping station does not start, then pay attention to the following factors:

Voltage. If the network does not provide the necessary parameters, the station will not work.
The pump has failed. In this case, it requires replacement or repair.
Broken cord. We need to find this place and close the gap.
Oxidation of contacts. They need cleaning.

The motor hums, but does not pump water, the impeller does not rotate

The reasons can be either electrical or mechanical in nature.

Low voltage.
Burnout in the capacitor terminal block. Determined by the tester and changed if necessary.
The check valve is clogged. It needs cleaning.
Impeller jamming. To do this, the pump is raised to the surface and an attempt is made to rotate the shaft manually. If this fails, the unit is disassembled and the cause of the problem is investigated. In some cases, it can be eliminated at home, and sometimes you have to turn to specialists.

Some types of repair work

Depending on the complexity of the breakdown, repairs are carried out with your own hands or specialists are invited for this purpose. TO simple work include cleaning the filter or removing a clogged check valve. A faulty hydraulic accumulator requires more complex repairs. Here you need to have knowledge and experience of such work.

Replacing the hydraulic accumulator bulb

The first sign of a broken membrane (“pear”) will be a sharp decrease in water pressure. The liquid is supplied along with air. The first step is to check the pressure in the accumulator, which should correspond to 1.5 atm. If it is missing, then the membrane is replaced. The operating procedure is as follows:

The device is disconnected from the network, the water is drained and the flange is unscrewed.
The torn pear is removed and the tank is inspected for rust. If it is present, it must be removed. After this, the container is dried.
A new membrane is installed in place of the old bulb, and the flange is put in place.

One of the manifestations of system malfunctions is a situation when a characteristic hum and vibration emanates from the units, but there is nothing in the pipes except air. When the pumping station is working but pumping water, the reasons may be different, but you need to find the one that has caused the system to fail and eliminate it. Most breakdowns can be repaired on your own.

Frequent breakdowns of the water station

In most cases, the answer is simple - the liquid level in the source has decreased. Then the intake does not reach it, and the equipment runs idle. The danger is that when operating in this mode, pumping stations quickly fail.

When the pump does not pump water from the well, the cause may be a clogged coarse filter. Silt, sand, clay and debris clog the mesh and prevent normal fluid intake into the hose. In this case, it needs to be cleaned and rinsed under running water. But if the pumping station does not pump water, this may not be the reason. Therefore, you need to pay attention to how the units operate.

The pump turns, but does not pump water

This manifestation may indicate that:

Mechanical components are worn out. Submersible pump does not pump if the blades are broken, the wheel is disconnected from the shaft, or there is wear on the walls of the working chamber. In addition, the pumping station is humming, but there is no liquid in the pipes when the bearings crumble and debris jams the wheel.
The water intake has become disconnected. Depressurization results in air being pumped into the hose instead of liquid. This can happen if the clamp has rotted or the flexible tube has become unusable due to mechanical stress. In any case, the consequences of this failure can be seen without disassembling the pump.

There are other reasons, but they are much less common. Malfunctions of internal components suggest that the pump is de-energized, disconnected and will have to be disassembled. Worn parts must be replaced immediately.

The unit works without stopping

If serviceable borehole pump does not pump water when all connections and pipes are in order, then the reason may lie in the incorrect operation of additional equipment or the system as a whole. If the network voltage is insufficient electric current, then the power is simply not enough to lift the liquid from underground to the surface.

In this case, there is no pressure in the pipeline, and the relay does not turn off. The danger is that the unit overheats and may fail completely. The solution is to measure the voltage, and if the situation in the region is considered normal, you need to include a step-up stabilizer in the system. When wondering why the pump does not pump water from the well, the voltage is checked first, and the equipment is immediately de-energized.

Prevention

All of the above consequences can be avoided if periodic audits are carried out. The fact that a system is able to operate autonomously does not mean that its functioning can be left to chance. But most importantly, most of the reasons that the pump hums but does not pump is due to the fact that errors were made when selecting equipment or when installing the system.

Insufficient power of the pumping station also causes a lack of water in the pipes. Overload and overheating are detrimental to equipment if it does not have appropriate protection. The electric motor turns, but its power is not enough to lift water from the depth of the well to the surface.

It makes sense to recalculate all the parameters and compare the required and actual characteristics of the equipment. The depth of the aquifer, the distance of the consumer from the source, as well as its flow rate are taken into account. If it is too small, then after turning on there will be water, but when there is not enough inflow, the level drops and the intake begins to suck in air instead of liquid.

It is usually created using a pumping station. It’s clear that it’s better if it works without problems, but breakdowns do happen from time to time. To quickly restore water supply and save on services, you can repair the pumping station yourself. Most of the breakdowns can be fixed on your own - you don’t have to do anything too complicated.

Composition of the pumping station and purpose of parts

A pumping station is a collection of individual devices connected to each other. To understand how to repair a pumping station, you need to know what it consists of and how each part works. Then troubleshooting is easier. Composition of the pumping station:

Each part is responsible for a specific parameter, but one type of malfunction can be caused by the failure of various devices.

Operating principle of the pumping station

Now let's look at how all these devices work. When the system is first started, the pump pumps water into the accumulator until the pressure in it (and in the system) is equal to the upper threshold set on the pressure switch. While there is no water flow, the pressure is stable, the pump is turned off.

Somewhere they opened a tap, drained the water, etc. For some time, water comes from the accumulator. When its quantity decreases so much that the pressure in the accumulator drops below a threshold, the pressure switch is activated and turns on the pump, which pumps water again. It is again switched off by the pressure switch when the upper threshold is reached - the shutdown threshold.

If there is a constant flow of water (the bathtub is running, watering the garden is turned on), the pump works long time: until it is created in the hydraulic accumulator required pressure. This periodically happens even when all the taps are open, since the pump supplies less water than flows out from all points of analysis. After the flow has stopped, the station operates for some time, creating the required reserve in the gyroaccumulator, then turns off and turns on after water flow appears again.

Problems and malfunctions of pumping stations and their correction

All pumping stations consist of the same parts and their breakdowns are mostly typical. It makes no difference whether the equipment is Grundfos, Jumbo, Alco or any other company. The diseases and their treatment are the same. The difference is how often these malfunctions occur, but their list and causes are usually identical.

The pumping station does not turn off (does not gain pressure)

Sometimes you notice that the pump has been running for a long time and will not turn off. If you look at the pressure gauge, you can see that the pumping station is not gaining pressure. In this case, repairing the pumping station is a long process - you will have to go through a large number of reasons:

If the shutdown limit of the pressure switch is much lower than the maximum pressure that the pump can create, and for some time it worked normally, but then stopped, the reason is different. Possibly at the pump the impeller has worked. Immediately after the purchase, he coped, but during operation the impeller wore out and “now I don’t have enough strength.” Repair of the pumping station in this case means replacing the pump impeller or purchasing a new unit.

Another one possible reason —low voltage in the network. Maybe the pump is still working at this voltage, but the pressure switch is no longer triggered. The solution is a voltage stabilizer. These are the main reasons why the pumping station does not turn off and does not build up pressure. There are quite a lot of them, so the repair of the pumping station can take a long time.

Pumping station repair: turns on frequently

Frequent activation of the pump and short periods of its operation lead to rapid wear of the equipment, which is very undesirable. Therefore, repairs to the pumping station must be carried out immediately after the “symptom” is detected. This situation occurs for the following reasons:

Now you know why the pumping station often turns on and what to do about it. By the way, there is another possible reason - pipeline leakage or some kind of connection, so if all of the above does not apply to your case, check if the joint is leaking somewhere.

Air in water

There is always a small amount of air in the water, but when the faucet starts spitting, something is not working correctly. There may also be several reasons:

The pumping station does not turn on

The first thing to check is the voltage. Pumps are very demanding when it comes to voltage; at low voltage they simply don’t work. If everything is normal with the voltage, the situation is worse - most likely the motor is faulty. In this case, the station is taken to a service center or a new pump is installed.

If the system does not work, you need to check the electrical part

Other reasons include a faulty plug/socket, a frayed cord, burnt/oxidized contacts where the electrical cable is attached to the motor. This is something you can check and fix yourself. More serious repairs to the electrical part of the pumping station are carried out by specialists.

The motor hums, but does not pump water (the impeller does not rotate)

This malfunction may be caused low voltage in the network. Check it, if everything is normal, move on. We need to check if it's burned out capacitor in terminal block. We take it, check it, change it if necessary. If this is not the reason, we move on to the mechanical part.

First, you should check whether there is water in the well or borehole. Next, check the filter and check valve. Maybe they are clogged or faulty. Clean, check operation, lower the pipeline into place, and start the pumping station again.

We check the impeller - this is already a serious repair of the pumping station

If that doesn't help, the impeller may be jammed. Then try turning the shaft manually. Sometimes, after a long period of inactivity, it “sticks” - it becomes overgrown with salts and cannot move on its own. If you cannot move the blades by hand, the impeller may be jammed. Then we continue the repair of the pumping station by removing the protective casing and unlocking the impeller.

Some types of repair work

Some steps to repair a pumping station with your own hands are intuitive. For example, cleaning a check valve or filter is not difficult, but replacing a membrane or bulb in a hydraulic accumulator can be difficult without preparation.

Replacing the “pear” of the hydraulic accumulator

The first sign that the membrane is damaged is frequent and short-term switching on of the pumping station, and the water is supplied in jerks: sometimes strong pressure, sometimes weak. To make sure that the problem is in the membrane, remove the plug on the nipple. If it is not air but water that comes out of it, then the membrane is torn.

To begin repairs, disconnect the system from the power supply, relieve the pressure - open the taps and wait until the water drains. After this you can turn it off.

Loosen the flange at the bottom of the tank. We wait until the water drains.
Unscrew all the bolts and remove the flange.
If the tank is 100 liters or more, unscrew the membrane holder nut at the top of the tank.
We remove the membrane through the hole in the bottom of the container.
We rinse the tank - there is usually a lot of rust-colored sediment in it.
The new membrane must be exactly the same as the damaged one. We insert the fitting into it, which secures the upper part to the body (tighten it).
We install the membrane in the accumulator tank.
If there is one, install the membrane holder nut in the upper part. If the tank is large, you won't be able to reach it with your hand. You can tie the holder to a rope and install the part in place by screwing on the nut.
We tighten the neck and press it with a flange, install the bolts, sequentially tightening them several turns.
We connect to the system and check the operation.

Replacement of the pump station membrane is completed. The matter is not complicated, but you need to know the nuances.

Household appliances are a vital necessity in the absence of a centralized water supply in a country house or country house. The hydraulic pumping station can be easily installed in a separate special room, water automatically flows from a river or well. They are reliable in operation, but if used incorrectly or worn out, malfunctions or breakdown of one or another spare part for pumping stations occur.

All owners of wells or boreholes face repairs to pumping stations.

If possible, be sure to contact a specialist about repairs. In case of remoteness from civilization, evaluate possible malfunctions and ways to eliminate them yourself.

Common important causes of frequent breakdowns

The pumping station has a certain configuration: consisting of a pressure gauge, a pressure regulating relay, a pump, a hydraulic storage tank and other components. stations out of order, spare parts, changing electrical wiring, ensuring the supply of the required amount of water. Causes of emergency:

pump failure;
there is no electricity or insufficient supply;
there is not enough water supply, it is absent;
damaged hydraulic tank;
The automatic control sensor unit is faulty.

To identify inoperability conditions, it is first important to check the power consumption and the reliability of the circuit connection. At low voltage, a connection to a stabilizer is required. Then you need to turn off the power supply and rotate the shaft to eliminate possible wheel locking. The next step is to check the operation of the starting device.

The pump may not supply water for the following reasons: if its seal is broken, if there is an air plug in the housing or along the overpass. Insufficient level, low pressure, inconsistency, clogging or breakdown of pipelines and valves are factors that often cause work failure. Let's take a closer look at methods for identifying the main types of breakdowns and home repairs of water pumps.

Repair the pumping station with your own hands only when the unit is completely de-energized. Be sure to remove the water, disconnect the pressure switch for the compressor, and the tank.

Brief analysis of the most popular problems and ways to solve them

The main problems are characterized by the following indicators: the pumping station does not turn on. The engine is running, but the pump does not operate, or water does not flow. The station's action is jerky. The pumping station does not turn off at all. Frequent switching from working mode to non-working mode.

When such violations occur, the pumping unit requires urgent restoration. Malfunctions of the pumping station are dangerous and can lead to a fire in the electrical wiring of the dacha building.

Knowing the operating principles of pumping stations, you can troubleshoot problems yourself

When turned on, the pump rotates, but no water enters the station system

What to do when incorrect operation is caused by other factors?

If there is water in the pipeline, work “dry”. Check the water level, top up the pump if necessary, or lower the leading hose down the well. To prevent insufficient water, the pipe is installed with an inclination to the surface of the intake site. Carefully monitor the filling of the well.
Solution to the problem when the integrity or tightness of the pipeline is compromised: it is necessary to patch the joints, gaps, and holes. All parts damaged by corrosion require immediate replacement.
If the hydraulic tank, pipeline, or check valve is contaminated with debris or sand, you need to clean them with a jet of water under pressure. The valve spring may break, requiring a new part.
When the suction pipe forms airlock, you need to fill, flood the internal space with water, increase its pressure in order to eliminate the air.
For detailed cleaning, you will need to disassemble the pump, buy spare parts for the pumping station: housing, impeller, and replace them.

If the above measures do not bring positive result repair the water pump, replace it membrane tank better in a special workshop.

The pumping station operates intermittently and jerkily

Problems with frequent switching and uneven water supply are caused by a violation of the integrity of the housing or the internal membrane of the hydraulic tank. During such failures, the indicators of the pressure gauge device jump sharply up, then drop.

Carry out a test: press the tank nipple, if air comes out, the membrane is not damaged. When it breaks, a trickle of water will appear from the hole. It is necessary to disassemble the battery case and replace the old membrane with a new part.
The problem of depressurization of the housing, caused by a crack or hole in the housing, is accompanied by a drop in pressure of the accumulator. You need to seal the hole, pump the missing air into the tank using a bicycle or car pump to the normal level (from 1.5 to 1.8 atm.).
Jerky water supply occurs when the integrity of the joints is damaged, there are cracks in the suction hose (pipeline), or the check valve is blocked. The reason is worn parts.

Disadvantages that arise due to depressurization can be easily eliminated during home repairs.

The pump does not turn on when starting

Possible malfunctions: fuse has blown, power supply has been turned off. Breakage, charring of insulation on the wire network. Destruction of relay contacts. The pump does not work if the motor shaft is jammed or the motor is burned out.

Necessary actions:

check the power connection diagram of the station; eliminate cable breaks, replace the plug and fuse;
make sure that the contacts inside the pressure switch are working properly;
check the condition of the capacitor special device– tester;
clean the pump;
rotate the impeller to check the engine wedging.

You can check the engine unsticking by turning the impeller

To avoid engine combustion, do not turn on the pump again until fault factors have been eliminated. A sign of insulation breakdown or engine failure is a burning smell.

The pumping station may turn on, but does not rotate

If the pumping station has not been used for a long time, the impeller and pump housing may have become stuck. To eliminate the blocking process, you need to manually make several turns when turning off the power supply.

Another reason for the breakdown is that the capacitor has failed. To restore functionality, you will have to purchase a new replacement part for the device.

If you hear a humming sound when there is no rotation, the power supply may be insufficient. Solution to the problem: connecting the installation to the network through a voltage stabilizer.

The station unit works uninterruptedly, but does not turn off automatically

The cause of the failure is a failure of the pressure switch or an incorrect action. The pump runs continuously unless the automatic device is triggered.

It is adjusted using two nuts with springs located under the cover. Tightening one of them (large) determines the parameters of the lower and upper pressure of the relay, the other (small) determines the difference between the levels of the upper and lower indicators.

What is the operating principle of the relay when setting up?

Achieving the minimum value is carried out without water with the pump turned off and the tap open.
The pump uses a pressure gauge inside the hydraulic tank to reach normal pressure.
Unscrew the surface cap of the tank. The large spring is loosened, the pump is connected, and the nut is slowly tightened. The water station is gaining pressure. When water enters, the pressure value is already equal to the parameters of the air indicator.
The process of regulating the differential begins: turn off the pump, measure the pressure of the relay. If the indicators are not satisfactory, tighten the small spring (or each one in turn). Then check the maximum value, bringing the pressure to normal.

A factor that causes incorrect operation of the relay when the station does not turn off is contamination of the contacts with deposits of metal salts if the source water is of poor quality.

The situation can be corrected by thoroughly cleaning the contacting surfaces with fine sandpaper. It is imperative to clear its water inlet from calcified or rusty iron deposits, debris, and sand.

A few notes about adjusting the pressure switch

If the values of the pressure switch for the compressor in the hydraulic accumulator differ from the norm, the station will fail and the engine will burn out. In this case, the unit is not subject to warranty repair.

In addition, the moving components of the station wear out, which significantly changes the pressure, so after time it is necessary to adjust the indicators, repair the relay, and replace parts.

Initial factory setting The relay changes over long periods of use as the springs stretch.

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It is safer to entrust the repair of a hydraulic accumulator, engine, tank to a specialist, since it is not easy to select the necessary spare parts for pumping stations, due to the exclusion of outdated models of devices from production.