Which Grundfos water pump is suitable for domestic plumbing. Smart pump for a well - selling equipment in an online store. Favorable prices, wide selection, fast delivery What is a smart pump

Servicing the heating system. Water supply is no less (or even more) complicated thing, requiring a competent approach. There are pumps various types- vortex, vibration, centrifugal and so on, and they serve a variety of purposes - from watering personal plot before setting the sea vessel in motion (in fact, a water-jet propulsion unit is the same water pump). Fun fact is that the centrifugal pump was invented by our compatriot, Russian military engineer Alexander Aleksandrovich Sablukov back in 1838. Moreover, he first designed a centrifugal fan designed to supply clean air into the mines, and then specially for a submarine designed by his friend and colleague Karl Schilder, he developed a similar design that allows water to be distilled. So Russia played an important role in the development of water collection. And we’ll talk about pumps for a very specific purpose - self-priming pumping units to maintain constant pressure in private homes. It’s so nice when you open the tap and water comes out with normal pressure (and, by the way, normal temperature).

Why is the pressure weak?

Problems with water pressure seem to be known to everyone. But in apartment building they are relatively difficult to solve - the pressure depends on the overall water intake, as well as on the condition of the water supply system. In a private household, these problems depend only on what the pump costs and how it works. It is clear that there is additional factors- the depth of water, for example, or the number of points where water is supplied (showers, baths, etc.), but in general all this can be adjusted. Sometimes the pressure of only one of the taps changes - hot or cold. Then the total water temperature changes sharply, and this, as you might guess, is not very pleasant.

There are two main reasons for changes in pressure: - change in inlet pressure; — simultaneous use of several water points. If we talk about city water supply, then in a single house the pressure changes along with the pressure in the entire system. In the morning, when people shower, eat breakfast (and use the sink), etc., the water pressure decreases. This is where you need the right pump with an “intelligent” element, that is, a device that is capable of maintaining constant pressure at the inlet, regardless of external factors. Let's look at an example - the Grundfos SCALA2 model.

The Legend of Constant Pressure

This pump belongs to the class of so-called “smart” pumps. It is equipped with a built-in sensor that measures the pressure at the outlet of the pump. If the pressure drops below a set level, the pump increases the shaft speed and compensates for the drop in pressure so that the pressure remains constant and does not “jump” throughout the system. Simply put, it provides constant pressure at variable flow. The user does not notice the differences. It would seem quite simple idea, but it is not implemented in all systems. In order for it to work exactly as intended, the pump must be correctly installed and, most importantly, configured. Although everything is simple here. It can be installed both indoors and outdoors (but - what is important - the temperature limits environment range from 0° to 55°C), and it can take water from the central city water supply system, from a reservoir, and from a well up to 8 meters deep.

There should be silence in the house!

One of the common problems with pumps installed inside the house is noise and vibration during operation. Especially if the pump is installed incorrectly - but we will not consider this option.

Savings on bills

SCALA2 is powered by a highly efficient motor permanent magnets— its efficiency is noticeably higher than that of a standard electric motor. Plus the device has a built-in a frequency converter and a “smart” control system as a whole, due to which it does not constantly operate at maximum energy consumption (which in itself is not very high, 0.55 kW), but consumes exactly as much as is needed under load at any given moment. On average, SCALA2 will consume only 0.4 kW. Compared to a standard analogue, the SCALA2 pump is approximately three times more energy efficient.

Finally, the pump is resistant to voltage surges, and characteristics close to the rated ones will be at voltages from 150 to 300 V. This is especially true for country houses, where voltage surges often lead to household appliances out of service.

To summarize, we can highlight the points that are worth paying attention to Special attention when choosing a pump. These are: - ease of installation and compactness; — minimal noise and vibration; — the ability to maintain stable pressure in the system; — reliability and durability; — energy efficiency and resistance to voltage surges. If the pump meets these requirements, it can be purchased. In our opinion, Grundfos SCALA2 corresponds. It’s not for nothing that we took him as an example. Choose wisely!
Areas of application for Grundfos SCALA2:

— increasing pressure from city highways; — water supply from wells (depth up to 8 m); - water supply from storage tanks(reservoirs); — manual and automatic watering systems; — pumping clean water from reservoirs.

Specifications:

— ambient temperature — up to 55 °C — temperature of the pumped liquid — up to 45 °C — operating pressure— 10 bar — insulation class — X4D (installation on outdoors) — number of floors of the building — no more than 3 — number of water points — no more than 8 — dimensions: height — 304 mm, length — 403 mm, width — 193 mm — weight (net) — 10 kg

Water pumps from the Danish company Grundfos are surface self-priming units designed for use in summer cottages and agricultural areas, in private houses and apartments. They are capable of raising the pressure in the system when supplying water to a certain height (depending on the model) and providing water supply using water from a well, borehole or open reservoir. They are also used for watering gardens and vegetable gardens.

Technical "stuffing"

The Grundfos automatic surface pump consists of a motor, an impeller, a diaphragm barrel, a pressure switch, check valves, flow sensor and electronic board.

When the pressure drops, the relay starts the pump and maintains a constant pressure until the tap is turned on, or when the pressure reaches 2.8 atm.

Grundfos models are suitable for private water supply:

Operating Parameters

The installation is cooled by the water it pumps. Overheat protection automatically turns off the pump when the water temperature is above 35 o C. The maximum pressure varies from 35 to 45 m. From a well or borehole, the device lifts liquid to a height of 8 m.

The pump automatically turns on when the pressure is below 2 bar or when the water flow drops to 1.2 l/min. The manufacturer declares a low level of vibration and noise - up to 55 dB (A), which is equal to the height of the sounds emitted by office equipment.

There is an automatic restart function 30 minutes after an emergency shutdown.

The device goes into emergency mode in three cases:

1. Dry running;
2. Hot water in the system (above 35 o C);
3. Engine overheating.

Restart is disabled manually. The device is turned on and off using a single button located on the body. ABOUT current state pump signals led indicator on the control panel.

For arrangement pumping station In addition to the pump itself, you will need:

• Hydraulic accumulator with membrane;
• Supply pipes.

Surface Pump Maintenance

For inspection, diagnosis or repair, it is better to contact any of the service centers.

Self-disassembly may result in complete malfunction of the device and a safety hazard.

The following video shows the process of service disassembly of the MQ model:

Helpful Tips:

• Incorrect location and angle of inclination will render the device inoperable in a matter of months. The pump must stand strictly horizontally on the surface.
• To reduce noise levels, it is recommended to install the pump on the floor with concrete screed and a rubber gasket. Incorrect installation leads to strong vibrations, increased noise during operation of the device, and even rapid breakdowns.
• For normal operation, it is recommended to install a hydraulic tank on the line after the pump, where a certain amount of liquid will remain. This reserve is enough for several minutes of operation without being plugged into the network. In addition to reducing energy costs, this option allows you to reduce the number of pump starts, during which the maximum current value has a destructive effect on the unit.

Operation under warranty

The manufacturer guarantees uninterrupted two-year service for all models of automatic surface pump ov.

Grundfos service centers are organized into a wide network and support customers in almost all regions. They will eliminate any technical issues. Free - if they occur through no fault of the user.

Some stores additionally provide their own warranty, but it usually does not exceed 1 year.

The pump takes up minimal space. For MQ models it is 570x218x320 mm. These parameters allow the pump to be installed in utility rooms located near or well, right in the house or apartment.

It is advisable to have a professional install the Grundfos pump. You can do everything yourself, but only subject to strict adherence to the installation algorithm and basic safety rules.

Connecting the pump yourself: preparation

1. The housing is installed on a solid base (concrete floor). The legs are secured with four bolts or anchors.
2. The supply hole of the pump is connected to the fitting, to the outlet of the fitting using a soft hose, or the hydraulic accumulator tank is directly connected.
3. The home pipe is connected to the inch hole of the fitting, and a pressure gauge is screwed to the quarter outlet.
4. Lastly, the pressure switch included in the kit is connected.
5. A suction port is connected to the suction pipe. A check valve and a coarse filter are put on this end, after which the pipe can be lowered to the bottom of the well.
6. The power cord is connected to the terminals of the pressure relay, which are in the open state, and the relay itself is plugged into a standard outlet.

Launch

There is a special bolt on the pump body that can be easily unscrewed with a screwdriver. It serves as a lid on the pump's working reservoir. A watering can is inserted here and water is carefully poured. The first start is possible only after this procedure, because If the device is dry, it will not turn on. The bolt is screwed back in by hand, without a screwdriver. Then you need to do everything strictly point by point:

• Close the taps and wait until the tank is filled. When the pump is turned off, the pressure level is checked using a pressure gauge.
• The taps are opened until the pump is turned on again. The pressure mark is fixed when turned on.
• If the received numbers do not match the receiver’s passport data, the pressure switch is adjusted again.

All connections to the fitting are equipped with nuts with union couplings for ease of assembly. They are tightened by hand without using a wrench.

Certified stores

The manufacturer Grundfos on the official website indicated a network of retail and wholesale stores for each region (in Moscow - PTF Hydran LLC, Time LLC, Elite Company, etc.). These representative offices have undergone proper training and certification, thanks to which they can not only sell Grundfos pumps, but also repair and service them.

Some online stores have undergone the same training. In Moscow these are the following resources:

• www.teploradiator.ru
• www.voda-vsem.ru
• nasos.exemer.ru
• www.mirvent.ru

In St. Petersburg you can make a purchase through the website www.im.astiv.ru, in Vladivostok - www.tsbdv.ru.

Well drilling has been completed. For quality water supply, it is necessary to resolve the issue of water delivery to the house. "Heart" plumbing system is the pump.

The intensity of the pressure, the quality of the water entering the house and the proper operation of the entire water supply system depend on the decision of which borehole pump to choose. The article discusses questions about the types of units and their DIY installation.

What parameters are used to select a pump for a well?

As a rule, the owner must know to what depth the well is drilled and its diameter, from this for the most part pump selection depends. If the owner decided to drill a well on his own, then it is recommended to determine these criteria in advance, but when the work was carried out by a specialized organization, then these data are indicated in.

Most pumps are designed for wells with a diameter of 3 or 4 inches (1 inch equals 2.54 cm), with a much larger choice of the latter.

Based on the parameters of your source, we determine the following criteria:

1. Water level.

Which pumps are best for a well? The characteristics of the pumps must indicate the immersion depth of the unit; there are devices that operate only at a depth of up to 9 meters, and there are those that lift water from 50 meters.

If you do not know the height of the water column of your well, then you can determine it yourself using a rope with a weight at the end, lowering the device into the hole to the bottom. Then all that remains is to measure the dry and wet parts of the rope: the first number will show the distance from the surface to the water surface, and the second will show the height of the water column.

If the depth of the well is known, then it will be enough for the load to submerge slightly in the water. Then it is enough to subtract the footage of the dry part of the rope from the total depth to get the height of the post.

Each well produces a specific amount of water over a certain period. This mass is called debit. The required parameter is determined as follows: the time during which the water is completely pumped out from the well is recorded, and then the time it takes for the water column to recover. Dividing the second number obtained by the first, we obtain the desired characteristic.

It must be said that the data calculated in this way is quite approximate, but it will be sufficient to select a pump.

1. Performance.

If you haven’t decided yet, then pay attention to the performance of the unit.

This factor directly depends on the owner’s water consumption. It is necessary to determine what functions the device will perform - serve only for home use or also for watering the area.

Water dispensing gradation modern pumps wide: from 20 to 200 liters per minute. It is estimated that one person consumes approximately 200 liters per day, then for an average family of 4 people a pump with a capacity of 30–50 l/min will be sufficient.

If you plan to water the site (and this is approximately plus another 2000 liters per day), then the unit should accordingly produce more water. This means you need to choose a pump with a capacity of 70–100 l/min; of course, the price of such a device will be an order of magnitude higher.

1. Pressure

Not only should a properly selected pump deliver uninterrupted required quantity water, the pressure should also be such that the liquid flows not in a thin stream, but in a normal stream, which will water the garden and Appliances will serve.

Calculating this parameter is easy to do with your own hands: take the depth of the well in meters, add 30 meters to this number, and you get the height of the water column that the unit must handle. To be on the safe side, they usually add another 10% of the amount received.

For example, the depth of the well is 20 m, add 30 m and get 50 m, adding another 5 m (10%), we find the estimated height of the column - 55 m. So, to the question “Which well pump to choose with these parameters?”, we answer: the best option will purchase a unit with a pressure of at least 60 m.

These are the main ones specifications necessary to select a pump for a well. In addition to these, there are several other factors that are also worth paying attention to.

Types of pumps for wells

All models are divided into:

• . The devices are partially or completely immersed in water.
• Superficial. They are used when the water level is not lower than 9 meters. Their installation can be carried out on the ground or on a floating platform, but a prerequisite is that water does not get inside the engine.

Tip: You should always choose a device with a power reserve, which will allow you to upgrade your water supply system at any time without replacing the pump.

Operating principle and installation rules for surface pumps

The operation of a well pump is as follows:

• A pump is mounted on the rotating shaft of the electric motor, which has holes for supplying and withdrawing water.
• The intake is carried out with a sleeve or hose with a check valve. The element must be good quality, otherwise depressurization of the unit may lead to the engine not starting.

Tip: You need to make sure that after stopping the pump the pump is not left without water, which will cause the device to run idle and may break it. You can turn it on only after filling the pump with water.

• You can increase the depth of water intake above 9 meters using an external ejector, lowered under the water along with a hose. In this case, when the pump operates, some of the water drops into the ejector, and the pressure in the hose increases, which increases the pressure. But loud noise, created by the installation, does not allow you to use this option permanently.
• Installing a surface pump is very simple. The unit is placed near the well, a hose is lowered into the water, and the device is connected to the network.
• It is better to install the pump in a heated room or in an insulated container.

Types of submersible pumps for wells

Manufacturers produce three types of submersible equipment:

• Centrifugal. These are the most expensive devices. Designed to lift water from a depth of more than 100 meters.
  Its composition of sand can exceed 180 g/m. A feature of the units is greater power and increased productivity.
• Vortex. With their help, water with an impurity content of up to 40 g/m can be pumped, and the depth of the wells is from 30 to 100 meters.
• Screw. The price of such devices is the lowest. They are used to organize water supply from wells with a depth of up to 15 meters or open reservoirs. The maximum presence of abrasive particles is 40 g/m.

Tip: Before purchasing a pump, you need to carry out laboratory analysis water to determine the composition and concentration of impurities. The use of vibration devices in wells can lead to rapid wear and tear of the structure.

For wells, those with high power are used.

The optimal dimensions of such devices allow them to be installed in narrow wells. The length of the elongated pump cylinder is from 50 centimeters to 2.5 meters, and outside diameter about 10 centimeters.

If the question arises, which pump to choose for a 15-meter well, then the deep pump is optimal solution. It is good for mine wells, deep sandy or artesian wells, technological tanks. High quality stainless steel is used for their production.

Centrifugal pumps for wells

The features of the unit are:

• The design of the device includes a motor shaft on which there is a wheel consisting of two plates connected by blades.
• The centrifugal force of the pump captures the water with the blades and then throws it into the supply pipe. - the most common type of equipment for wells. This is the most universal mechanism.
• Their main purpose is to pump clean water. This indicates that there should not be even a small amount of sand in the water.
• The cost of centrifugal pumps depends on the number of stages and some design features.
• For household needs Most often, single-stage pumps are used, but if greater water pressure is needed, multi-stage pumps should be chosen, where several operating wheels are located on one shaft.

Vibration Pump Applications

Vibration pumps are used for the following purposes:

• Pumping water from the tank. It can be used to drain a newly dug well or to clean it when necessary.
• Raising water from a reservoir for domestic use.
• Supplying water from an open source such as lakes, swimming pools, rivers, etc.
• Supplying water from a pre-filled container, which can include a tank, tank, etc.
• Pumping water from a flooded room, basement, trench, etc.
• Pumping water from a well can also be done using, but reviews about the use of this unit in such conditions vary greatly. Some speak positively about the pump’s performance, using it for years, while others talk about a damaged well and a collapsed foundation.

How does the type of pump depend on the depth of the well?

The type of pump is selected based on the depth of the well.

Therefore, when choosing a pump, you should consider:

• Depth of aquifers.
• If there is already a well on the site, but its depth and location of the water level are not exactly known, then the question of which submersible well to choose can be decided after measuring it.

This is done like this: a small load is lowered into the well on a dry rope, after which the distance to the water level is determined using the wet mark.

• These values ​​are usually indicated in the device passport.

Advice: It is necessary to take into account that different product models can operate continuously and uninterruptedly only within a certain range.

Recommendations for choosing pumps for wells of different depths

So:

• Which pump should I choose for a 60-meter well - a powerful deep well or a household pumping station? It is not very easy to lift water from such a depth, which requires the installation of at least two check valves. To supply water from great depths, the pump is installed directly into a drilled well. Dimensions deep well pumps They are small, but they perfectly provide autonomous water supply for a private house, dacha, or cottage. Using special equipment, the housing of deep-well pumps is lowered into the well, then secured to the surface with a cable.
• Which pump to choose for a 50-meter well - the most powerful household pump or a pumping station? The pump must be submersible, centrifugal type. A surface pump cannot cope with the task. A deep well type pump is suitable. When using a pumping station, it must include a hydraulic accumulator, a self-priming pump and a pressure switch.
• If the question arises of which pump to choose for a 30-meter well, then it is better to first calculate the power of the device required to supply water from such a depth. To do this, take the depth of the existing well in meters and add 30 to it. This will be the height of the water column.

A margin of 10% is added to the resulting value. For example, with a well depth of 25 meters, it is necessary to purchase a pump with a pressure: 25+30=55. 55+10%=65. This means that the pump pressure should be 70 meters.

• Which pump to choose for a 20 meter well? Here the answer is clear - a submersible well pump is indispensable, preferably a centrifugal type.

A short overview of well pumps

So, you have decided to purchase a well pump, which one will last better and last longer? Let's look at a few of the most popular models.

GILEKS Water cannon PROF 55/75 House

• View – submersible.
• Country of origin: Russia.
• Immersion depth – 30 m.
• Capacity – 55 l/min.
• Lifting height – 75 m.
• Pump diameter – 98 mm.

With this performance, the pump is capable of providing water to several distribution points in the house and watering the garden. The pump is fully adapted for operation in Russian climate conditions.

The unit is equipped with a hydraulic accumulator, has good pressure, soft start, almost complete absence of vibration, convenience and ease of maintenance, as well as the ability to work in sand-filled wells. Automated control equipped with protection functions against “dry running” and overheating.

The disadvantages include the rather high price, which is compensated by the reliability of the unit.

Grundfos SQ 2-55

• View – submersible.
• Country of origin: Denmark.
• Immersion depth – 55 m.
• Productivity – 33 l/min.
• Lifting height – 68 m.
• Pump diameter – 74 mm.

A rather expensive pump, but this is exactly the case when the quality of the unit exceeds the declared cost. With a diameter of 3 inches, the device is suitable for narrow wells, equipped with functions of protection against overheating and dry operation, etc.

The pump has high wear resistance, smooth start, high efficiency, will easily provide good water supply to 3 points of analysis. It works completely silently, is ergonomic, and in addition, the manufacturer gives good guarantee(10–15 years).

Pumps are available in both horizontal and vertical versions, which significantly increases their functionality. Comparison well pumps other manufacturing companies with the unit of this company will not be in favor of the former.

The downside is poor resistance to voltage surges; you will have to additionally purchase a stabilizer. It is not recommended to use the pump in heavily sandy wells; it is advisable to pump clean water.

UNIPUMP ECO 1

• View – submersible.
• Country of origin: Russia.
• Immersion depth – 20 m.
• Capacity – 80 l/min.
• Lifting height – 52 m.
• Pump diameter – 96 mm.

The pump is designed for poorly sanded wells and has automatic control with protection against overheating and dry running. With such high performance, the unit will completely provide the house with drinking water and sufficient watering even large plot. The pump is characterized by quiet operation, efficiency and ergonomics, as well as at an affordable price.

Disadvantages include sensitivity to hard water and a weak power cord.

Belamos TF3-80

• View – submersible.
• Country of origin: Belarus.
• Immersion depth – 80 m.
• Capacity – 45 l/min.
• Lifting height – 85 m.
• Pump diameter – 75 mm.

The pump for narrow wells has an affordable price, good performance, stable pressure over a wide range of water flow and high quality assemblies. Guarantee period, specified by the manufacturer, is 12–15 years.

The design of the unit provides the ability to clean the pump part with your own hands, without contacting a specialized organization. The pump has built-in thermal protection with forced activation, eliminating engine damage in emergency situation, is not afraid of voltage surges, the kit includes a 50 m cable and a plug with a grounding contact.

One of the disadvantages is the high energy consumption.

Hand pump device

The photo shows simplest form hand pump.

This is the most reliable and easy-to-use unit for extracting water from a well. Its advantage is that if there is a power outage, the owner of the site will not be left without water.

But such a device can be used with a well depth of no more than 8 meters, which means that it is applicable only where a surface pump is installed. No special instructions are needed to connect it.

The principle of operation of the device is as follows: the suction device is driven by a wing, to which the movement is transmitted from a hand lever. The entire system is connected by a shaft and protected by the pump housing.

The main advantage of such a unit, along with energy independence, is its low cost; it is several times cheaper than any electric analogue.

Which well pump to choose and how to install it can be seen in the video. This article offers only a few options for well pumps and their advantages.