Scope of the model range of Grundfos CR pumps. Multistage vertical pumps Grundfos pumps type CR

Grundfos CR (Grundfos / Grundfos) is one of the market available series of basic pumps for industrial and household needs, which the company engineers were able to expand and improve due to the competent use of all the capabilities and modifications of component modules. Grundfos pumping equipment has already shown itself in the market as reliable and highly efficient, compact and economical in operation.

The devices allow us to use with conventional water and with poorly aggressive fluids. The technique has an anti-corrosion coating and provides work when high level Pressure.

1 Advantages and Scope of Grundfos Technology

A wide range of applications of the company's devices is provided by competent technical solutionswhich enable the use of equipment at a pressure of up to 50 bar. This is facilitated not only from the rubber of excellent quality, but also various modifications of voltage sources.

For the manufacture of the CR basic series use materials such as:

cast iron brand EN GJL 200 (for model Row CR);
stainless steel The two most durable AISI-304 and AISI-316 brands (for model rows CRI and CRN);
titanium (For the Grundfos CRT model range).

Optimization of technical solutions for details that must be suitable for operation in different conditions Allow effectively apply equipment for:

technical and drinking water supply systems;
detergents, filtration and cleansing systems;
systems reverse osmosis and for use in sea water;
pumping various aggressive materials like alkalis and acids;
use in swimming pools.

technique is regulated by frequency converters;
pressure installation is part of the global water supply system;
the pumping technique should become a critical element of the production process;
phased cleaning or disinfection of large volumes of liquids is required.

1.1 Overview of the GRUNDFOS CR pump device (video)

2 models of pressure apparatus CR series

Industrial pumps Grundfos series CR are produced in four versions, depending on the manufacturer of the parts of the case and the mechanisms. As already written above, these are two types of steel, cast iron and titanium.

The whole series is still more common characteristics. Each of the pumps in this series: centrifugal, vertical, with suction technology "IN-LINE" (IN-LINE). The peculiarity of this technology is that they can be mounted even in a single-pipe horizontally located system of the pipeline, regardless of whether the pressure and suction nozzles lie on the same plane and what diameter they are.

By default, the CR models are not equipped with an engine shaft rotation frequency regulator, which helps to correlate the desired level of performance with the efficiency of energy consumption. But, the "E" series is an option that can be ordered by prior approval with the supplier.

Also, by coordination of the parties, the CR series may be:

in horizontal design (series H);
in horizontal versions for belt drive (Series R);
performed for high pressure with an increased rotational speed of the shaft (Series HS);
with magnetic drive (Series M) or double end seal;
with an increased cavitation reserve (Series K);
for work S. high pressure without tightening bolts (SF)
with dry-run protection sensor (LiQTEC);
in the explosion-proof version (ATEX).

Now we will understand in more detail with the modifications of the CR series, the full range of which is as follows:

Grundfos Cr 5.1S, 1, 3;
Grundfos Cr 10, 15, 20;
Grundfos CR 45, 32, 64, 90, 120, 150;
Grundfos Cre;
Grundfos CRN;
Grundfos crne.

2.1 GRUNDFOS CR 5 4

This is a vertical, multistage centrifugal technique, with a capacity of up to 0.55 kW, with the maximum pressure of up to 27 m, with a speed of rotation of the engine up to 2,900 revolutions per minute. Weight model 24.7 kg, and maximum flow Total 8.3 m³ per hour.

2.2 GRUNDFOS CR 5 10

From the previous model, this is characterized by a capacity that is 1.5 kW, maximum pressure - up to 68 m, and weighing 39 kg. The remaining characteristics are similar.

Both models are successfully used in enterprises for pumping drinking and technical fluids that do not enter the chemical response with parts of the device. Liquids should not include fibrous or solid particles. All devices of this model range can be used in the range of fluids from -20 ° C to + 120 ° C and are designed for pressure from 0 to 16 bar.

2.3 GRUNDFOS CR 15 3

Vertical multistage device, with a capacity of 3.0 kW, with a maximum pressure of 42 meters at 2900 engine speed per minute. Weighs only 55 kg, and works in the temperature range of liquids from -20 ° C to + 120 ° C at a maximum pressure of 16 bar.

The characteristics of this series are different from each other by weight, pressure and power, therefore, for convenience, we describe a few more modifications:

GRUNDFOS CR 16: Power 7.5 kW, weight 55 kg, pressure 83 meters;
Grundfos CR 32 3: Power 5.5 kW, weight 96.3 kg, pressure of 59 meters;
Grundfos CR 32 4: Power 7.5 kW, weight 101 kg, pressure 78 meters;
Grundfos CR 45 3 2: Pump power 11 kW, weight 144 kg, pressure 67 meters;
Grundfos CR 90 3: Power 22 kW, weight 264 kg, pressure 103 meters.

As you can see, the nomenclature of the pumps of the CR model range includes the 13 sizes with various values Consumption, several hundred sizes with different values \u200b\u200bof pressure, weight and power.

Pumps are equipped with a shaft tolerant seal that does not require maintenance, flange for connecting and pipe couplings PJE types (Vitaulic). If we talk about the maximum efficiency, it varies from 35 to 72% as the model marking is asundated in the series.

Engines in the GRUNDFOS series of a standard three-phase bipolar asynchronous closed type. Although, for devices with a capacity of up to 2.2 kW, one can order a one-phase version.

Vertical multistage centrifugal pumps Grundfos CRT

Purchased liquid: Explosion-proof, not containing abrasive and fibrous inclusions, is chemically neutral to the materials of the pump.
To pump chemically aggressive liquids, it is necessary to select the appropriate combination of the pump materials, resistant to the working environment.
Material: Flowing part of titanium.
Facial seal: Paragraph friction tungsten carbide / tungsten carbide, EPDM elastomers (AuUE), Viton (AUUV) on request.
Type of accession: Coupling Victaulic (PJE).
Rated voltage: Up to 1.5 kW (inclusive): 3 x 220-240d / 380-415y B, from 2.2 kW to 5.5 kW: 3 x 380-415d B, from 7.5 kW to 18.5 kW: 3 X 380-415D / 660-690Y B, 1x230 V - on request.
Rated frequency: 50 Hz.
Degree of protection: IP55.
Energy Efficiency Class: From 0.75 kW (inclusive) IE3.
Rotational speed: 2900 rpm.

The Grundfos CR 20-3 pump, CR 3-10, Cr 5-5, CR 10-3 is endowed with high efficiency. Compactness is another property characteristic of CR 10-10.

Pump Grundfos Cr 10-4, Cr 10-6, Cr 15 4, Cr 15-1, Cr 15-5 and other models of this species allow you to rationally use the space sequentially small sizes. The centrifugal pumps Grundfos series CR 1-2, CR 1-3N, CR 1-4 characteristics (prices, power, service life) are optimal for any working conditions.

Pump Grundfos CRA, CR 32-2, CR 45-2 2, CR 45-2, CR 45-4 are used in the field of water supply, water treatment, air conditioning. In addition, such models such as Grundfos Cr 1-3 N, Cr 1-17, Cr 1-10, Cr 5-10, Cr 5-1, Cr 5-10 are integrated into fire mechanisms and boiler nutrition systems.

DESCRIPTION

Vertical, multistage centrifugal pump CR GRUNDFOS with suction and discharge nozzles located at one level (so-called "in-line"), which provides the ability to install in horizontal one-pipe system. Material parts of pumps in contact with liquid, high-quality stainless steel. Cartridge shaft seal provides high reliability, assembly safety, easy maintenance and access. The pump consists of the base and the head. Intermediate chambers and cylindrical casing are interconnected, as well as with the base and head of the pump with the help of tightened bolts. Rotation is transmitted through the clutch. Connecting to the pipeline with a combination of DIN-ANSI-JIS flanges.
The pump is equipped asynchronous electric motor On the paws, with air-cooled.
CR, CRI, CRN pumps are supplied with a standard asynchronous two-particular electric motor with fan cooling. In standard version, all pumps have three phase electric motor MG. For pumps with a capacity of 0.37-2.2 kW, a version with a single-phase electric motor is possible (1x220-230 / 240).
Single-phase electric motors have a built-in thermal relay to protect against overload.
Three-phase electric motors must be connected to a motor starter in accordance with local regulations and rules.
Three-phase electric motors of GRUNDFOS with a capacity of 3 kW and more have a built-in thermistor (PTC).

Areas of use:
filtering and pumping water for water supply stations;
Distribution of water from water supply stations;
increase pressure in trunk pipelines;
Increased pressure in water supply systems of high-rise buildings, hotel complexes, etc.
Increased pressure:
in cold and hot water systems for technological purposes;
on car wash;
in fire extinguishing systems;
In the washers and wastewater treatment facilities.
Pumping:
in cooling systems, air conditioning systems;
In the cooling systems of the tool of metal cutting machines (lubricating fluid supply);
fish farming;
solutions of oils and alcohols;
weak solutions acids and alkalis;
Hydrogen Field Hydrogenation (irrigation, watering)

To selection of the pump of Grundfos, as well as receiving for more information and materials go to the selection program pumping equipment GRUNDFOS PRODUCT CENTER (GPC). The GPC reference is located in the upper right side of the screen.

Home Product Page

If the language of the main page is English, then it can be changed into Russian. For this:

click on the Change Settings string in the upper right side of the screen.
in the Find menu, the Grundfos Product Center field and opposite the name of Regional Settings click Edit.
choose mutual language GRUNDFOS PRODUCT CENTER (Count Language - "Russian");
in this submenu, you can also choose a regional product line to eliminate the choice of goods that are not sold in Russia (Count Product Range - "Russia")
press the "OK" button and then the return button to the product menu.

Under brief description Product There are two additional tabs - Subgroups and Documentation.

Documentation

Brochures - Brief overview materials, in which the main features and advantages of this equipment are collected;

Installation and Operation Manuals - the most detailed technical information. The designation of Pii corresponds to the type of document created for the technical regulations of the Customs Union. If there is no document with the designation of Pioi in the list - then use the document with the Multi Language designation, where Russian is among the proposed languages.

Service - Service documents, such as Service Guide and Spare Parts and Spare Parts (Service Kit Catalogue).

Catalogs - Overview documents with consumerial curves, dimensional and assembly dimensions.

Subgroups

On this tab, you can find subtypes of this equipment, divided into more specific groups (for example, sizes of pumps separated by electric motors). If the type and name of the required product is known, then in the appropriate subsection you can press the button " Show subgroup"And go to the selection menu of the specific subgroup pumps.

ATTENTION: In some products there are no division into subgroups and the shared tab immediately opens the menu of selecting specific pumps.

If the product name is unknown, you can approximately select the desired range of equipment at the operating point by clicking the "Show Q & H" button.

Read more about the menu " Show subgroup"And" Show Q & H»:

Show subgroup

In the menu column " List of sorting"You can mark the well-known necessary parameters depending on the type of equipment ( Rated power; Number of electric motor poles; Number of steps; Type of impeller; etc.) and narrow the search framework.

A set of parameters may vary depending on the type of equipment.

The list of equipment that meets the designated requirements will be removed in the right window "All Suitable Results". Clicking on the icon with the image of the magnifier, you can see the expenditure curve and the power curve of this model (if available).

ATTENTION: The nominal working point of the pump will not necessarily be actual, in expenditory characteristics, it is given in estimated purposes. In each case, the competent selection of pumping equipment is required.

For convenience of viewing the expenditure characteristics, you can go to the pass-through viewing fields by pressing the button " Characteristics».

In this case, the "All Suitable Results" window is transformed from the list of models in the list of characteristics, which will make it easier for the visual selection of the pump. You can return to the text listing of models using the " List».

Show Q & H

This menu is available only for products divided into subgroups and allows you to select an approximate operating point, which lies in the range of this subgroup of pumps. This can be done either on the expenditure-pressure characteristic on the right, or by selecting the necessary parameters of the pump in the online menu on the right.

In the drop-down submenu, the "liquid" you can select the parameters of the pumped liquid, which will be taken into account when selecting the pump.

After entering the necessary parameters and pressing the "Sumbit" button, the GPC will give the most optimal options For specific operating parameters.