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Danish company GRUNDFOS since 1945, since its foundation, develops and manufactures pumps. The company produces Grundfos pumps for various purposes in the amount of 20 million per year, their share on the world market is 50%.Grundfos Group has its own production in many countries. It is noteworthy that for the purpose of financial independence, the concern develops through reinvestment, without credit obligations, and is a private company. Read also about the choice of pumping stations for giving!
Why Grundfos pumps are in demand
From the moment of the creation of the first samples, the quality of performance and the new model development, the introduction of management innovations into devices, have been given priority. The result was a credibility of the Grundfos brand. Experts believe that under any request you can find the right pump Grundfos. Excludes the use of the apparatus for pumping corrosive liquids and mineral oils. The pumps of the Danish manufacturer are multifunctional, they can be installed in various systems, taking into account the characteristics of the model:
- The small weight of the compact device simplifies its installation.
- Aggregates operate with low noise and low power consumption;
- Grundfos pumps are automatically controlled, the device adjusts to the set parameters.
In the manufacture of equipment, the manufacturer uses the best materials - stainless steel, cast iron, titanium. Use and polymers that do not degrade the quality of products.
The modern line includes directions:
- single and dual circulation pumps with a wet rotor and dry type;
- Grundfos submersible and surface pumps for wells, wells and pumping water for irrigation with flow rates up to 470 cubic meters / hour and head up to 670 meters;
- water cantilever, used for pumping technical hot and cold water in boilers for heating;
- vertical sectional, multistage, can be used, including, to increase the pressure;
- block surface and submersible pumps for pumping domestic wastewater.
In the line more than a hundred of developed models, and the company continues to create new devices equipped with software, called "smart".Pumps are in demand because of the developed service network.
To exclude the purchase of a counterfeit, you need to buy pumps and components at dealerships. The warranty is given not only on the product, on any spare part purchased from the manufacturer.
Versions of submersible pumps.
Equipment installed in a layer of liquid in wells, boreholes or open water bodies is a housing in which a protected engine and a working part are mounted. The special design creates a sealed compartment for the Grundfos submersible pump motor. Goes deep into the device on a special cable.
There are several types of submersible equipment:
- vibrating;
- centrifugal;
- Drainage KP Series.
Vibratory pumps are simple in design and relatively low cost. The working range of the tool is limited to a depth of 50 m. In the layer on the sand, most filter wells are arranged.
The principle of operation is based on the creation of a magnetic field in a coil, with the passage of electricity. The core vibrates, raises and lowers the diaphragm connected to it. The movement of the membrane creates a vacuum in the chamber, as a result of which water fills the chamber. When the membrane space is compressed, water raises the pillar located in the injection pipe and an outflow occurs on the surface. Thanks to a modern control unit, the process is under control. The SP series includes Grundfos well submersible pumps that can supply turbid water with moderate amounts of abrasive particles. Their productivity reaches 470 m3 / h, the pressure - up to 670 m.
The SQ series represents centrifugal pumps for operation in a well under the bay. The working body is a centrifugal wheel of one or several lifting steps. As the impeller rotates, water rises along the walls of the chamber into the discharge line hose. A pump is used in narrow well casing. The linear size of the product depends on the depth of the well; for deep pumps it can reach 2.5 meters.
The Grundfos KR series drainage pump can be used as a submersible borehole pump, lifting water from a depth not exceeding 50 m. KR means that the pump is made of stainless steel. The device works in sewer wells, pumps out household drains.
The advantage of the device:
- can pump water with inclusions up to 10 mm in diameter;
- has protection against dry running and overheating;
- has an automatic float switch;
- stainless steel design allows you to pump a wide range of fluids.
Models KP pumps have low power consumption, produce low noise during operation, pump up to 8 cubic meters of liquid per hour at a pressure of 5 meters. There is a product, depending on the characteristics of $ 190-230.
Grundfos pumps designed for use in domestic conditions, the performance of which is marked by enhanced corrosion protection, have the letter O in the designations of the series.options.
A prerequisite for long-term operation of machinery is compliance with the instruction manual. The manual is written in good Russian, with color design. The installation in front of the pump is filtering mandatory even when pumping clean water.
Self-repairable troubles, and solutions are described in the instructions. In other cases, expensive equipment is repaired in specialized workshops. Service prices are available to all.
The following problems are fixed on their own:
- pump has stopped turning off - check if the voltage matches the rated value;
- does not turn on, check power supply, switch lock buttons;
- turns off during operation - check the voltage, cool the case;
- turns on and off often - system airing;
- appeared vibration - check mount.
When complying with the requirements, without comment, the equipment of the Danish company has been operating for 8-10 years.
