What could be malfunction at the circulation pump?

In private houses and summer cottages are often installed. With all the variety of models in today's market, the principles of operation of the instruments are no different. Any malfunction of the heating pump leads to the fact that the entire system stops. A little pleasant in what happened, because without heat, the house will not be comfortable and cozy. It is important to immediately apply for the help of a specialist in the service center or, if there is tools and appropriate skills, repair the circulation pump of heating with your own hands. In this article we will give tips on preventing breakdowns, as well as consider the most common damage to the heating systems.

Operating Rules

The service life of heating equipment depends on the right operation. Observing some non-good rules, you will save the property from damage:

• the operation of the heating unit with zero feed is prohibited;
• if there is no liquid in the pipeline, the pump is prohibited by prohibited;
• from how low or high, the coherent operation of the device depends on how low or high. If the feed is broken, the device may come to disrepair;
• to prevent the oxidation and blocking the shaft during the downtime, you need to turn on the pump 1 time per month by a quarter of an hour. So you will prolong the use of moving parts;
• follow the water temperature in the water supply pipeline. The perfect indicator is + 65º. Excess rate leads to the loss of rigid salts in precipitate and rapidly deterioration.

From time to time (preferably at least 1 time per month) pay attention to maintenance. Such a warning step provides a well-coordinated operation of the system and will prevent the late breakdown, and respectively, the repair of the heating circulation pump.

Regularly check the serviceability of the equipment. The inspection scheme includes visual inspection and high-quality performance indicators:

• turning on the heating unit, make sure that the system does not have noncharacteric noise and vibrations;
• check whether the water pressure corresponds to the stated in the characteristic (technical data);
• check the heating of the device, it should not be excessive;
• check if there is a ground between the equipment and the terminal;
• please note whether there are leaks in those places where the equipment is connected to the pipeline. Tighten the connections and replace the gaskets if necessary;
• check the condition of the wires in the terminal box, it also should not be moisture.

The main fault of the heating circulation pump

Composite parts of the circulation pump

Many typical heating equipment malfunctions can be established by their own. It is enough to have an idea of \u200b\u200bthe pump design, a set of tools and minimal knowledge in the repair area. It is also important to know how to disassemble the heating circulation pump. Before restoring damage, check the power supply. The voltage must comply with the stated technical passport.

Below are the common heating pump malfunctions, their causes and methods for solving problems.

Problem number 1. Noise pump heating

The reasons:	Remedy methods:
1. Pump has fallen long and the engine shaft oxidized	● disassembling the heating pumpit begins with disconnecting the supply of electricity; ● freeing the pump and adjacent pipelines from the remnants of the coolant; ● Remove the locking housing of the pump screws and the engine; ● disassemble the electric motor and rotor; ● It is necessary to rest in the working notch, turn the rotor hand.
2. A foreign object blocks the wheel	● Disconnect the heating device; ● From the pump and adjacent pipelines, remove the coolant; ● Remove the locking housing screws and the engine; ● get a foreign body; ● Insert the mesh filter to protect the inlet pipe from dirt and scale.

Problem number 2. The equipment does not rotate and does not make up characteristic sounds.

Tester Check the power supply and voltage on the terminals, and correctly connect the device to the power supply. Many models have a fuse that quickly blows up from voltage jumps. Solving the issue - Replacing the fuse.

Problem number 3. When switching on circulation pump noise

When the air is accumulated in the pipeline, uncharacteristic noise appears. Solution - . If you install an automatic node at the top of the pipeline, the air will be automatically produced.

Problem number 4. Heating equipment does not turn on

The problem is in power supply. Check the phases and fuses. If the inspection did not fix the situation, the drive winding is most likely. In this case, self-repair is impossible.

Problem number 5. The pump is turned on, but turns off in a couple of minutes of work

If the wires are connected incorrectly, then it is necessary to repair the circulation pump with their own hands. Look at the terminal box and check the connection of the wires by phases. Also, if the contact of your fuse is weak, it must be removed and cleaned all the stuck elements.

Problem number 6. Strong vibration pump

The most common cause of the repairs of the heating pump with their own hands is the amortization of the bearing. Replacement details eliminates malfunction.

Problem number 7. Insufficient pump pressure

Preparing equipment for heating season

It is necessary to prepare the equipment in advance to the heating season

In order to do not engage in the repair of the heating circulation pump, it is necessary to check its serviceability before the onset of cold.

1. Connecting pumping equipment to the pipeline must be correct. Install the device in a place where the possibility of the formation of air traffic jams is minimized (the perfect option is before the boiler).
2. Check if there is a lubricant on the gasket and nozzles. If they fucked, the lubricant needs to be restored.
3. Inspect the grid filter. If, as a result of a long work, he clogged, clean it.
4. Tester check the correct connection of the heating equipment to the network.
5. Before the beginning heating season Swipe the test switching on the unit.

Before dismantling the device, a number of preparatory actions must be made.

First of all, check whether there is a voltage supply to the device terminals. The indicator will help in this issue.

Often the repair of the heating pump is preceded by a fan lock. In the process of use, due to chemical impurities in the coolant, salts are postponed on the fan. Turning a screwdriver shaft, the system will earn again.

If the specified actions did not solve the problem, make sure your circulation unit is generally disassembled. Some models are simply not subject to recovery. Detail of the repair of the heating pump is presented in the video.

Preparatory stages before dismantling equipment: to de-energize the heating device; overlapping bypass, but water circulation is not stopped; Install the backup pump (in case of protracted repair work); Direct disassembly pump.

By purchasing heating equipment, check the ability to repair the heating unit at home by own forces. Ask the consultant whether there are spare elements for the device. Sometimes it is easier to put a new device than to engage in exhausting troubleshooting.

Circulation pumps of various types today are often used in country houses and dachas, which makes it possible to make the operation of autonomous heating systems more efficient and while saving on energy resources spent. Meanwhile, at the failure of such a hydromachine, the entire heating system ceases to function, which puts its user before choosing: use the services of qualified professionals or repair the heating circulation pump with their own hands.

The reasons for the breakage of circulation pumps, the types of which differ from each other with certain constructive features are associated both with non-compliance with the rules of operation of such equipment and with the quality of the coolant, drops in the power supply network, as well as a number of other factors. Before deciding on the independent repair of circulation pump, it is necessary to understand the design and principle of the operation of such a device, which will make it possible to establish the exact cause of its failure and eliminate it.

Device, types and principles of circulation pumps

Not knowing the circulation pump device, you will not only be able to repair such hydromachines, if there is a need for this, but also to deal with regular maintenance. The design of circulation pumps is:

• case made of stainless steel or non-ferrous alloys;
• the electric motor, the shaft of which is connected to the rotor;
• the rotor itself, on which the wheel with blades is installed - the impeller (its blades, constantly in contact with the pumped medium, can be made of metal or polymeric materials).

There is a circulation pump regardless of its constructive design according to the following principle.

• After the electric current is supplied, the drive motor shaft begins to rotate the rotor on which the impeller is installed.
• Incoming interior The pump through the suction pipe fluid-coolant is discarded by the impeller and the centrifugal force to the walls of the working chamber.
• The liquid on which the centrifugal force affects is pushed into the injection pipe.

As mentioned above, depending on the design features, the heating circulation pump may relate to different types. So, allocate devices with a rotor:

• "Wet";
• "Dry".

In private homes, the circulation pumps "wet" type are most commonly used.

In circulating pumps of the first type, which are used mainly to equip household heating systems, the rotor is constantly in a liquid medium. This contributes not only to the lubricant of moving elements, but also to their effective cooling. The main advantages of the equipment of this type should be attributed to:

• low noise when working, as water in which all moving elements of such a device are located, perfectly absorbs vibrations;
• easy of installation (such pumps are simply crashed into pipeline), maintenance and repair.

Meanwhile, the pumps with a "wet" rotor, if we talk about their disadvantages, differ not too high efficiency, can be installed only in a horizontal position and are very critical to the absence of fluid in the heating system.

The pumps with the "dry" rotor are installed in separate boilers and are used in systems heating large areas.

The drive motor of pumps with the "dry" rotor is carried out in a separate unit. Rotation from the electric motor shaft is transmitted to the impeller by means of a special clutch. Unlike devices with a "wet" rotor, this type of pump is characterized by a higher efficiency (up to 80%), but also a more complex design, which somewhat complicates procedures for their maintenance and repair. Circulation pumps with a "dry" rotor are cut into the pipeline and fasten their housing to the wall, for which a special console is used.

Operating and maintenance rules

In order not to encounter situations in which the circulation pump installed in the heating system will require repair, it is necessary to strictly follow the rules of operation of such equipment that are as follows.

1. If there is no water in the pipeline, it is impossible to run the circulation pump.
2. The magnitude of the water being formed should be within the characteristics specified in the circulation pump technical passport. If the device is reduced low or, on the contrary, increased water pressure, it can lead to its rapid wear and, accordingly, failure.
3. During the period in which the heating system is not used, the pump must be included on the circulation at least once a month by a quarter of an hour, which will prevent oxidation and blocking its moving parts.
4. It is very important to ensure that the water temperature in the heating system has not been more than 65 °. In water heated to a higher temperature, begins to actively fall out of the precipitate, which, interacting with the moving parts of hydromachines, contributes to their active wear and, accordingly, failure the entire device.

Inspect the circulation pump and check the correctness of its work is necessary monthly. Such events allow us to identify malfunctions in the work of the equipment at the initial stage and promptly take appropriate measures.

Checking the circulation pump for the correctness of the work includes such actions as:

1. the inclusion of hydromachines on the operating mode and checking the level of the noise and vibrations created by it;
2. the pressure test (pressure level) of the coolant created in the discharge nozzle (as mentioned above, the pressure of the fluid must be within the values \u200b\u200bgiven in the technical passport);
3. control the degree of engine heating, which should not be too high;
4. checking the presence of lubrication on the threaded coupling elements of the pump and its application, if there is no;
5. checking the presence and correctness of the grounding of the hydromachine housing;
6. checking the presence of leaks both on the pump housing and in places where it is connected to the pipeline (if there are flows in such places, you must tighten the threaded connections and check the integrity of the installed pads);
7. inspection of the terminal box and checking the fixation in it (in addition, it is necessary to check whether the moisture does not fall into the terminal box, which is unacceptable).

The most typical faults and their elimination

You can select several of the most typical of circulation pumps of faults that are completely realized with their own hands. It is possible to identify such malfunctions according to characteristic features, even without disassembled the pump and without applying complex diagnostic equipment.

The pump is buzzing when turned on, but the impeller does not rotate

The cause of the situation when the pump is noise, but the impeller is fixed, often the oxidation of the shaft of the drive motor. This may occur due to the fact that the hydromist was not used for a long time. To repair the heating pump with your own hands with such a fault, you must perform the following actions:

• turn off the power supply;
• merge from the pump and adjacent pipeline all the water;
• by unscrewing the appropriate screws, dismantle the drive motor together with the rotor;
• relieving into the working notch of the rotor with a hand or a screwdriver, turn it by force by shifting from a dead point.

Circulating pump disassembled

The pump will be noise, but do not work in the event that a foreign object hit its inside, which blocks the rotation of the impeller. To repair the circulating pump in such a situation, the following steps:

• turn off the power supply;
• drain water from the pump and the adjacent pipeline;
• disassemble the pump according to the scheme described above;
• extract the foreign object;
• install the mesh filter on the inlet nozzle.

The pump is not buzzing and does not work

If the included circulation pump is not no cozy, but also does not work, there are problems with power supply. To identify the cause and elimination of such fault, the disassembly of the circulation pump may not be required: using the tester, check the level and the presence of voltage on the terminals of the device. In many cases, to eliminate such a fault, it is enough to connect the pump to the power supply network.

If there is a fuse in the circulation pump design, it could overdo the voltage in the power supply in the electrical outlet, which can also be the reason why it does not work and the heating pump does not turn on. To restore the pump operation, it is enough to simply replace the blown fuse.

After short work, the pump is independently disconnected

In the event that a layer of lime deposits was formed on the inner surface of the stator, the pump will periodically stop. To solve such a problem, you need to disassemble the pump and clean all its internal parts from lime deposits.

When switching on the pump begins to work, but it makes a strong noise

The cause of the strong noise of equipment during fluid pumping may be in the pipeline of a large amount of air. To eliminate such a problem, it is enough to keep air from pipes. In order not to encounter this in the future, you can install a special node at the top of the contour of the heating system, which will be released from the pipeline automatically.

Strong vibration of circulating pump

If the housing of the hydromachine is strongly vibrated when pumping the coolant, it may say that the bearing that ensures the rotation of the impeller, was strongly worn out. Repair of the circulating pump for heating in this case is to replace the worn bearing.

The end graphite bearing of the pump "Grundfos"

Circulation pump issues insufficient fluid pressure

Among the causes of the fluid pressure inconsistency with the regulatory values \u200b\u200bat the output of the centrifugal pump, the following can be called.

• The impeller rotates not to the side.
• The terminal box is incorrectly connected phase wires (with three-phase connections).
• Too high viscosity of the coolant used.
• The filter set on the suction line was hampered.

The indicated problem is eliminated in accordance with the reason that caused its appearance.

The pump is disabled after a while after switching on

The reasons for such a malfunction can be an incorrect connection of phase wires in the terminal box, bad or oxidized contacts in the safety unit of the device.

The pump is heating

This is another trouble that when operating such an equipment is found quite often. Why is the circulation pump heats? Causes may be different, but such a situation always suggests that your equipment works with an increased load.

Thus, with many situations in which the circulation pump does not work or work incorrectly, it is possible to cope with independently, without resorting to the services of qualified specialists and not acquiring expensive parts and components for repair.

How to prepare a circulation pump to the heating season

Before the heating season, in order not to encounter subsequently at the failure of the circulation pump and its repair, it is necessary to prepare the device to a long period of intensive work accordingly.

1. It is necessary to check the correctness of the pump in the pipeline, focusing on the arrow on the case and the impeller rotation indicator. When installing a new pipeline for installing circulating hydromachine, it is better to choose a plot directly in front of the boiler, where the risk of air traffic jams is minimized.
2. On the gaskets and pipes of the pump should be lubricant to prevent their drying.
3. It is necessary to check the state of the net filter on the suction nozzle and, if it is clogged, clean it thoroughly.
4. It is also required to assess the correct connection of the pump to the power supply network, for which the tester is used.
5. It is necessary to check the tightness and reliability of the junction nodes of hydromachines.
6. You need to perform a trial launch, the results of which will show whether your equipment is ready for the heating season.

Before disassembling the circulation pump, if there is a need (for example, when repaired), it is necessary to turn it off from the power supply and remove from the pipeline by unscrewing all the fastener threaded items.

After the pump is dismantled from the heating system, you can proceed to its disassembly:

1. The lid is removed, which is fixed on the pump housing using special bolts.
2. After removing the lid from the inside of the pump, an impeller is retrieved.

After that, access to all internal pump details will be provided, they can be examined, clean or replace with new, if there is a need.

A very good sequence of disassembling circulation pumps of various models for repair demonstrates video that is easy to find on the network.

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Repair of the circulation pump with their own hands - step by step instructions

Circulating pumping devices are very popular with owners of private houses and dachens. The range of pumping equipment is quite wide, but the general principles of the device are the same. Such equipment can stop from minor damage for example: what to do? Take a broken pump to the service center? It costs money, and in many regions of serving companies simply not. Therefore, the economic owner of the house should know how to install.

To understand how to independently disassemble, maintain, repair the circulation pump you need to know its device. Such equipment is arranged as follows:

• all nodes and mechanisms are placed in corpswhich is manufactured from steel (mainly stainless), aluminum and other alloys;
• inside the housing is located electric motor with rotor;
• on the rotor is installed wheel with wings - impellerThat is usually produced from technical polymers.

Principle of operation of circulating type pumps

After turning on the electrical circuit, the engine begins to rotate the rotor with the impeller fortified on it. A liquid is supplied to the central part of the pump. The blades rotate and discard the water or another coolant to the outer part of the case. Under the action of centrifugal forces, the liquid moves and enters the outlet nozzle of the pump.

Types of circulation pumps

Currently, there are two main types of circulating pumping devices.

1. "Wet type" - In such equipment, the rotor is completely immersed in the pumped liquid. A significant advantage of such a configuration is the cooling of rubber and heating parts by contact with the liquid. Such equipment is quieter working and less. When it is installed, it is necessary to withstand the position of the body (usually horizontal), as the rotor must be completely immersed in the liquid. Also, the "wet type" devices are more simple in service, but are very sensitive to the absence of fluid in the system (the work "dry" can quickly output the pump).
2. "Dry type" - In such devices, the pump engine is put into a separate compartment or the module, and the transmission of the torque on the rotor is performed through the drive device (coupling). Dry type pumps are more efficient, but also have a more complex device. "Dry" pump can work without damage and in the absence of fluid in the system, but such a work will lead to increased drive wear.

How to operate correctly

In order not to disassemble or repair your equipment once again, it must be operated correctly.

1. Never turn on the pumping device without fluid in heating pipelines.
2. Keep the volume of water pumped by the pump within the operational characteristics. Exceeding or lowering the volumes of pumped water, relative to the indicators specified in the technical passport, are not allowed. If the pump is designed for pumping from 5 to 100 liters of water per hour - pumping 3 or 103 liters of water strongly flashes it.
3. If your pump is idle for a long time, then once a month, turn it on about a quarter of an hour. This will help prevent the oxidation of moving parts and their subsequent damage.
4. Support the temperature in water supply pipelines not more than 65 degrees. If the temperature of the coolant is exceeded, the precipitate may damage the moving parts of the pumping device. The temperature of the water is over 65 degrees (for example, 70-80 ° C) promotes rapid equipment wear.

How to carry out regular maintenance of pumps?

From time to time, it is advisable not less than once a month, it is necessary to produce an external inspection and verification of the quality work of your circulation pumping device.

1. Turn on the pump and on operating mode Check the absence of extraneous noise and excessive vibration.
2. Check the head of the coolant, issued by the pump. It must comply with the indicators declared in a technical passport.
3. Make sure there is no excessive heating of the electrical engine of the device.
4. Check the presence of lubrication on the threaded flanges and, if necessary, restore it.
5. Ensure that grounding between the pumping device housing and the corresponding terminal.
6. Inspect the pump from all sides and make sure there is no leaks. Typically, such vulnerable places are the pairing unit and the pumping device housing. Check the tightening level of the bolts and the normal state of the gasket.
7. Inspect the terminal box. All wires must be securely fixed. The presence of moisture is unacceptable in the node.

How can I eliminate typical circulating pump faults?

In circulation pumping devices, there are a number of typical faults that can be eliminated independently. Each block will describe the signs of malfunction, its causes and repair actions with their own hands.

The pump is buzzing, no rotation

The reason can be engine shaft oxidation with long-term pump. Problem troubleshooting instructions.

1. We remove water from the pump and pipelines adjacent to it.
2. We dismantle the electric motor complete with the rotor.
3. We turn the rotor with your hand, or a screwdriver, resting in the working notch.

The next reason for such a malfunction can be non-foreign objects.

1. Turn off the power of the equipment.
2. We remove water from the pump and pipelines.
3. We remove the screws fixing the housing and the electric motor.
4. Remove a foreign object.
5. We protect the pump inlet pump with a mesh filter.

Also the reason for the absence of rotation can be no power. To do this, we check the presence of power on the terminals in the box and the correct connection of electrically conductives.

The pump is not buzzing and does not rotate

The main reason for such a malfunction can be no power supply or insufficient network voltage. To eliminate, check the tester tension on terminals and, if necessary, the correct connection of the device to the power supply.

Many electric pumps are equipped with a fuse. With voltage jumps, it burns out and requires replacement.

The pump begins to work, but after a while stops

The reason for such a malfunction can be the deposition of lime scale between the stator and the rotating rotor. The fault is eliminated by dismantling the electric motor and its cleaning from limestone deposits.

Pump is very noise when turned on

The reason for such a malfunction may be air in the pipeline of the heating system. To eliminate it, it is necessary to release air from pipes. For automatic release of air, it is recommended to install automatic node in the upper segment of the pipeline.

If a sharp noise is accompanied by increased vibration, it is recommended to increase the pressure at the input to the pumping device. The insufficient pressure can be compensated by increasing the coolant level in the system.

Pump vibrates strongly

The reason for such a malfunction is usually becoming strong bearing wear, providing rotation of the impeller. The fault is eliminated by replacing the worn bearing.

What if the pump gives out insufficient pressure?

The cause of such a defect can be an incorrect direction of rotation of the wheel with blades. The cause of such a phenomenon is usually incorrectly connected phase in three-phase equipment connections.

Also, the reduction of pressure can be caused by an increased viscosity of the coolant, then the impeller meets too much resistance. To eliminate, you must clean the filter from deposits on the inlet nozzle, check the cross section of the incoming pipeline and set the necessary pump adjustment parameters.

What if the pump stops after the start?

Most likely, the cause of such a malfunction can be an incorrect connection of wires by phases in the terminal box. Perhaps the fuse on your pump has not sufficiently tight contact. Remove it and clean the clamps.

How to prepare circulating pumps to the winter heating season

In order for your uninterruptedly worked around all the cold season, it is necessary to carry out regulatory service before the heating season.

1. Check that the pump is connected to the heating pipeline. Pumping equipment must be installed in such a place of the irrigation network, where there is a minimum possibility of forming air traffic jams. Rationally place it on the line of the return, in front of the heating heating boiler.
2. Before exploiting operation make sure all the network connecting elements have retained their tightness. To prevent the gasket, the inlet and outlet nozzle during the interruption is covered with canning lubrication.
3. Check the condition of the filter before the inlet nozzle of the pump. If necessary, replace or clean it.
4. Check that the device is connected to the power supply.. Not only the density of contacts on the terminal box, the safety of the fuse, but also correctly connect the phases and the value of the operating voltage in the network. Check these characteristics are best tester.
5. Before using the heating circulation pump in obligatory test startwhich must confirm the complete tightness of the system and the health of all its components and equipment.

How to dismantle and disassemble the circulation pump

If the test launch of the equipment revealed disadvantages of the pump device, which cannot be eliminated without disassembling it and disassembly, you will have to perform the following operations.

1. At the preparatory stage, the pumping equipment is de-energized. When installing the pump to the system of pipelines, bypass is embedded - the heating pipe is embedded. In normal operation, it overlaps. With long-term repair, it may be necessary to connect to the system of an additional pumping device.
2. Unscrew the locking valves fixing the pump, remove it.

The dismantling of the pump before repair is especially necessary, there are your heating pipelines metal-plastic. Repair "on weight" can damage such pipes.

We disassemble the circulation pump

With serious repair of pumping equipment, not only its disassembly is needed, but also disassembly. It is performed in the following sequence.

1. The cover of the circulation pump is fixed on the housing using bolts. It can be bolts under a crusade screwdriver or hexagon. During operation, the bolts can "acciterate". You can solve such a problem with the help of specialized aerosols, also called "liquid key". It is applied to the bolt and after a few minutes it can be easily unscrewed.
2. Remove the lid. Before us is a rotor with a rotor with a wheel with blades fixed on it. It usually holds on the locks, or on bolts. Remove it and you will get access to the "insoles" of pumping equipment.
3. Inspect the pump, determine the defective node and replace it.

It should be carried out independently of the circulation pumps only after the end of the warranty period or if it is impossible to obtain qualified technical assistance. A number of nodes of pumps is quite difficult to find in a free sale. It is usually caused by the trading policy of the manufacturers, so be prepared for the fact that in some cases it is cheaper to purchase new equipment, and not to repair broken.

In order to get acquainted in more detail with the technology of repairing circulation pumps, see the learning video.

Video - Repair of the circulation pump do it yourself, step by step instructions

The main purpose of the circulation pump is to create forced circulation in the home heating system. With it, it is possible to improve the process of heat transfer, increase the efficiency of the system, as well as to save on materials - for the device of the heating system with forced convection, you can use pipes with a smaller diameter than it is required when installing the heating system with natural convection.

Modern circulation pumps are available in two types:

• with a "dry" rotor,
• with a "wet" rotor.

Why is the noise circulating pump? The fact is that for cooling the engine, the device with a "dry" rotor is equipped with a fan, which during operation and creates elevated level noise. Such equipment is used in homes with a large area and is installed in a special room.

Devices with a "wet" rotor are arranged in such a way that when working in the system, the rotor is completely immersed in the pumped liquid. The coolant not only washes the sliding bearings, but also cools the engine. Thanks to this principle, the pump does not need the use of the fan, which significantly reduces the noise level during its operation. It is often difficult to determine the sound works with a "wet" rotor or not. This type of equipment is installed in the premises near which people live. However, what should I do if the pumping equipment began to buzz while working? We highlight the main causes of problems and ways to eliminate them.

Causes for which circulation pump noise

The main condition for the long-term and fragible operation of the device is the competent installation, which is made with a clear compliance with the manufacturer's recommendations.

If the circulation pump is buzzing, you should make sure that all installation operations are made without disorders. To prevent the occurrence of this problem, experts are recommended to install a pressure membrane tank (hydrocompensator). With it, you can control the static pressure in the system. The membrane tank will exclude cavitation loads that not only contribute to the creation of the Gula, but also negatively affect the service life of the device.

In order to create comfortable conditions for accommodation in the house, you should choose the right place to install the pump. It should be determined by the design features of the equipment. Special attention should be paid to the water purification used in the system.

Many are worried about why the circulation pump is buzzing at the beginning of the heating season? As a rule, this is due to the fact that when filling communications with liquid system, air enters thermal conducting pipes and the housing of the rolling device. Remove air traffic jams through special holes equipped with screw plugs. Valves to remove air from the system should be located at the upper points of the elements of the heating system. Before each starting system, make sure that there is no air in the system. Modern models of circulation pumps due to their design features do not need prophylaxis. Eliminate dirt accumulated during the summer downtime, it is possible when you turn on the pumping motor to the maximum power.

Circulating type pumps with automatic adjustment during operation do not create noise in thermostatic valves of pipelines. They quickly react to

the slightest changes in the heating system. For example, when opening or closing the thermostatic valve, the device automatically changes its specificationswithout spending electricity over the norm. Devices with electronic adjustment do not need manual lifting.

So, the hum in the heating system is most often caused incorrectly selected (heavy duty) pump. When the device is selected, it is necessary to consider the technical characteristics of the system.

Circulation pump can be buzzing as a result of mechanical breakdown. It is possible to eliminate it only after mounting and disassembling the device. As a result of long-term operation of the equipment, technological gaps increase. It is possible to solve the problem by replacing the adjusting washers. This measure will prevent the axial beating of the engine shaft.

Also the cause of loud operation of the pump can be the wear of the working surfaces and the shaft sleeves. In this case, it will take a replacement of parts that have come to a malfunction with the simultaneous shaft ross. This will help to prevent the radial bias of the nodes.

The causes of the occurrence of the noise of the cyclic type in the circulation pump are the burning of the motor windings or inter-touch cliffs. Eliminate such breakdowns under the power to repair electric motors with professional skills and the desired set of tools.

How to disassemble and repair the heating circulation pump with their own hands

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Owners of country houses are equipped with individual heating. This is due to a number of reasons: there is no centralized highway, the search for the most economical option, the convenience of heating (i.e. the ability to include the heating system regardless of the time of year).

Check the price and buy heating equipment and related products you can have. Write, call and come to one of the shops in your city. Delivery throughout the Russian Federation and CIS countries.

The key link in such a system is circulation pump Heating. It is responsible for creating a forced circulation of hot fluid for heating at home. Very often in work circulating pump There are failures and defects, which urgently need to be eliminated, otherwise the entire system can simply fail. In the article, we will look at the reasons for the circulation of the circulation pump.

Circulation pumps

Device and principle of operation of the circulation pump

If you do not know what the principle of operation of the circulation pump is, it will be difficult for you to make repair and maintenance.

The circulation pump is designed from the following elements:

• the case, which is made of stainless steel or non-ferrous alloys;
• electric engine, the shaft of which is connected to the rotor;
• the rotor on which the wheel with blades is mounted - the impeller (its blades are in constant contact with the pumped medium, they are performed from metal or polymeric materials).

Circulating pumps There are two types:

• with wet rotor;
• with a dry rotor.

At the units with a wet rotor, this item is placed in a liquid medium. Such pumps are usually supplied with household heating systems. Due to the fact that the rotor is located in the liquid, all moving parts are not only lubricated, but also efficiently cooled.

The main advantages of this type of circulation pump are:

1. In the process of work, they practically do not make noise, since the water in which all the details of the device are located well absorb vibrations.
2. In the installation, they are simple, it is enough to embed them into the pipeline, also repair and maintenance does not take much time and effort.

As disadvantages of pumps with a wet rotor, it is worth considering a little productivity, they should be mounted exclusively in a horizontal position. Also, if there will be no liquid in the heating system, such devices may fail.

Circulation pump and pump

Drive engine pumps with dry rotor is highlighted in a separate group. Rotation from the electric motor shaft is transmitted to the impeller using a special coupling. Compared to the previous view, this is characterized by higher performance, efficiency reaches 80%. Also, the design of units with a dry rotor is more complicated, in connection with this, it is somewhat more difficult to maintain and repair.

The most frequent malfunctions, their causes and ways to eliminate

There are situations where the heating circulating pump does not work. Many of the problems can be eliminated independently. You can learn the faults in a number of distinctive characteristics for them.

The circulation pump is buzzing, but the impeller does not rotate

Users are often wondering: why is the heating circulating pump buzzing and what to do in this situation? Often, the noise of the pump and at the same time the complete immobility of the impeller occurs due to the oxidation of the shaft of the drive motor.

This situation may happen due to the fact that the hydromoline has not functioned for a long time. In order to repair the pump with your own hands, you need to perform a sequence of actions:

• initially, you must turn off the power supply;
• then it is necessary to drain all the liquid from the pump and the pipeline adjacent to it;
• after that, you need to unscrew the screws and disassembling the drive motor in conjunction with the rotor;
• and the last thing you have to do is move the pump from a dead point, for this you need to touch the hand or screwdriver to the operating notch of the rotor.

Composite parts circulation pump

The pump will make noise, but do not function and in the event that a foreign object will fall inside the design, which will be an obstacle to the wheel rotation. Here you need to check the heating circulation pump, find an excess part and resort to the repair of circulation pump:

• initially turns off the power supply;
• next, the water drops from the pump and pipeline,
• after which it is necessary to disassemble the circulation pump as shown in the diagram in the figure;
• next you need to remove the foreign object;
• and at the final stage, a strainer is installed on the inlet nozzle.

The circulation pump is heated

It is important that the temperature mode of the device is identical to the temperature regime of the coolant pipe. If he rose, then the shortcomings were made in the installation process or you simply use it wrong. The reasons why the device can be warm up:

1. Installation was incorrect. To identify the problem simply: if the pump is basked immediately after installation, then the reason clearly lies in it.
2. Clogging system. With long-term operation in the pipes, various sediments accumulate and rust is formed, which makes it difficult to pass the fluid. Consequently, the pump is overloaded in order to ensure normal circulation of the coolant. At the same time, the engine overheating occurs, but the problem can solve unscheduled maintenance.
3. Foreign object. When there are too many slag in communications from pipes and radiators, the pieces of rust or plaque begin to flap. Their entering the device jars an electric motor. If you do not disassemble and clean the device on time, then there will be a high probability of breakdown of the electric motor coil and you will come across the problem that the circulation pump for heating will not be turned on at all.
4. Bearings are not lubricant. When there is not enough lubricant material, the bearings are very quickly beginning to be stitched, which negatively affects the service life of the device as a whole.
5. Low voltage in the network. At voltage below 220 V, the electric motor is very quickly overheated, which entails the failure of the failure.

The pump is not buzzing and does not work

If the pump does not make any noise, but it does not function, then some kind of electrical power facilities are possible. It is important to know how to check the heating circulating pump in this case.

For this, it is not necessary to resort to the disassembly of the unit. You need to take the tester and check the level and presence of voltage at the terminals of the device. Most often, it is enough to solve this problem only to make the correct pump connection to the power supply.

If a fuse is present in the circulation pump design, he could simply turn into the voltage transmission process into electrical networks.

In order to bring the pump to action, you need to replace the blown fuse.

Circulation pump power supply circuit

How to repair the heating circulation pump, if it turns off by itself

If you encountered a situation when a layer of lime deposits appeared on the inner walls of the device and the functioning pump is periodically turned off, then you need to urgently solve this problem.

You need to disassemble the device and clean all its inner parts. The procedure should be performed as soon as possible. The lateness is fraught with the final failure of the circulation pump.

Why noise circulating heating pump

Release of air from the circulation pump

Often loud noise It appears due to too much air in the pipeline. In order to solve the problem, you need to know how to pull the air from the heating circulation pump.

To solve this problem once and for all, you can install a special node in the upper portion of the heating system, which will independently produce air from the pipeline.

Knock in the circulation pump of heating or severe vibration

Here, most likely the problem is to wear the bearing. All you need to do is replace this detail.

Bearing circulating pump

How to disassemble the heating circulation pump with their own hands

To repair the circulation pump, it is necessary to make it dismantle and high-quality disassembly.

Initially, the device must be turned off from the electrical network. To disconnect the cable from the terminal box, it is necessary to remove the housing from the power supply unit. Then you need to overlap the water supply by side valves and drain the residue in the system. Next, the pump must be unscrewed by a hex screwdriver.

You may encounter a problem when the bolts are baked. They need to moisten the WD-40 fluid and after 20-30 minutes try unscrew again.

After dismantling, you must remove the device cover. Under it there is a rotor with a wheel and blades. You need to remove the rotor, which is usually fixed with bolts. So you will get free access to the inner details of the pump. Then you should carefully inspect the device and troubleshoot.

Summing up all the above described, it is worth noting again that the circulation pump is a very important element of the heating system on which serious functions are assigned. That is why it is very important to control his work and carry out regular service. In the event of malfunction failures, you need to immediately take the necessary measures, otherwise you can run your unit simply fail.