NKE 250-315/260-210 - Industrial pump Grundfos - Free user manual and instructions

Brand	Grundfos
Model	NKE 250-315/260-210
Category	Industrial pump
Type	Single-stage inline centrifugal pump
Suction diameter	DN 250 (250 mm)
Discharge diameter	DN 315 (315 mm)
Rated motor power	260 kW
Number of motor poles	2 (3000 rpm at 50 Hz)
Supply voltage	400 V / 690 V, three-phase, 50 Hz
Motor protection rating	IP55
Motor insulation class	F (155 °C)
Rated flow	500 m³/h
Rated head	70 m
Fluid temperature	From -20 °C to +120 °C
Pump body material	Cast iron GG25
Impeller material	Cast iron GG25
Approximate weight	2500 kg
Dimensions (L x W x H)	2000 × 800 × 1200 mm
Flange connection	PN 16 (EN 1092-2)
Main functions	Pumping of clean or slightly contaminated water in distribution networks, heating, air conditioning, irrigation
Maintenance and cleaning	Regularly check alignment, lubricate bearings, clean suction strainer
Safety	Motor thermal protection, overload protection, CE marking
Spare parts and repairability	Mechanical seal, bearings, impeller, wear ring available from Grundfos

Frequently Asked Questions - NKE 250-315/260-210 Grundfos

What does the model NKE 250-315/260-210 mean?

The model indicates: NKE = inline pump series, 250 = suction diameter in mm, 315 = discharge diameter in mm, 260 = motor power in kW, 210 = impeller code or variant.

Can this pump operate with hot water?

Yes, the pump accepts fluids up to 120 °C with suitable seals. For higher temperatures, contact the manufacturer.

What type of mechanical seal is used?

The pump is typically equipped with a Grundfos SIC/SIC mechanical seal for optimal reliability and wear resistance.

How to bleed air before commissioning?

Use the vent plug located at the top of the pump body. Open it slowly to release air until a steady stream of water flows, then close.

What is the recommended supply voltage?

The pump is designed for a three-phase voltage of 400 V or 690 V at 50 Hz. Check the nameplate for star/delta connection.

How to reverse the rotation direction if necessary?

To reverse direction, swap two phases of the power supply. The correct direction is indicated by an arrow on the motor.

What is the recommended maintenance frequency?

It is advised to check bearings and mechanical seal every 5000 hours of operation, and change bearing oil every 2000 hours (if applicable).

Can the pump be installed outdoors?

Yes, thanks to its IP55 protection rating, it resists dust and water jets. However, protect it from frost and direct weather.

What to do in case of leakage at the mechanical seal?

Excessive leakage indicates seal wear. Stop the pump and replace the mechanical seal. Refer to the manual for disassembly procedure.

Where to find spare parts for this pump?

Original Grundfos parts are available from authorized distributors or after-sales service. Use the model number to order.

USER MANUAL NKE 250-315/260-210 Grundfos

TPE, TPED Series 1000; NBE, NBGE, MTBE, NKE, NKGE; TPE, TPED, NBE, NKE Series 2000

Sigurnosna uputstva

TPE, TPED Series 1000; NBE, NBGE, MTBE, NKE, NKGE; TPE, TPED, NBE, NKE Series 2000

Installation and operating instructions http://net.grundfos.com/qr/i/98476024

GRUNDFOS

TPE, TPED Series 1000; NBE, NBGE, MTBE, NKE, NKGE; TPE, TPED, NBE, NKE Series 2000

English (GB)

Safety instructions....6

Български (BG)

EU declaration of conformity 105

UK declaration of conformity. 109

UK declaration of conformity....1 1 0

Moroccan declaration of conformity....111

Ukrainian declaration of conformity 1 1 3

Ukrainian declaration of conformity 1 1 5

Operating manual EAC 117

■ Prevod originalne engleske verzije

Ova bezbednosna uputstva daju brzi pregled mera predostrožnosti koje treba preduzeti kod bilo kog posla na ovom proizvodu. These safety instructions give a quick overview of the safety precautions to be taken in connection with any work on this product.

Sledite ova bezbednosna uputstva tokom rukovanja, instalacije, rada, održavanja, servisiranja i popravke ovog proizvoda.

GB: EU declaration of conformity

We, Grundfos, declare under our sole responsibility that the products TPE, TPED Series 1000; NBE, NBGE, MTBE, NKE, NKGE; TPE, TPED, NBE, NKE Series 2000, to which the declaration below relates, are in conformity with the Council Directives listed below on the approximation of the laws of the EU member states.

Machinery Directives (2006/42/EC and 2009/127/EC)

Standard used: EN 809:1998 + A1:2009

Ecodesign Directive (2009/125/EC)

RoHS Directives (2011/65/EU and 2015/863/EU)

Standard used: EN IEC 63000:2018

Products with motors marked with HMI 100, HMI 200 or HMI 300, and with CIM 250 or CIM 270.

Radio Equipment Directive (2014/53/EU)

Standards used: EN 61800-5-1:2007, EN 61800-3:2004+A1:2018, EN 62479:2010, EN 301 489-1 V2.2.0, EN 301 489-17 V2.2.1, EN 301 489-52 V1.1.0, EN 301 489-7 V1.3.1, EN 300 328 V2.1.1, EN 301 511 V12.5.1

Products with motors marked with HMI 100, HMI 200 or HMI 300, and with all other CIMs than CIM 250 or CIM 270, incl. without CIM.

Radio Equipment Directive (2014/53/EU)

Standards used: EN 61800-5-1:2007, EN 61800-3:2004+A1:2012, EN 62479:2010, EN 301 489-1 V2.2.0, EN 301 489-17 V2.2.1, EN 300 328 V2.1.1

Products with motors marked with HMI 101, HMI 201 or HMI 301, and with CIM 250 or CIM 270

Radio Equipment Directive (2014/53/EU)

Standards used: EN 61800-5-1:2007, EN 61800-3:2004+A1:2012, EN 62479:2010, EN 301 489-1 V2.2.1, EN 301 489-52 V1.1.0, EN 301 511 V12.5.1

Products with motors marked with HMI 101, HMI 201 or HMI 301

EMC Directive (2014/30/EU)

Standard used: EN 61800-3:2004+A1:2012

This declaration of conformity is only valid when published as part of the Grundfos Safety Instruction and other important information (publication number 98476022).

Suzhou, Jiang Su Province, PRC, 08 September 2022

Joachim Krogshave

Head of PD CBS

Grundfos Holding A/S

Poul Due Jensens Vej 7

8850 Bjerringbro, Denmark

Manufacturer and person empowered to sign the EU declaration of conformity.

[10000089839]

UK declaration of conformity

We, Grundfos, declare under our sole responsibility that the products to which this declaration below relates, are in conformity with UK regulations, standards and specifications to which conformity is declared, as listed below:

Valid for Grundfos products:

TPE, TPED Series 1000

NBE, NBGE, NKE, NKGE

TPE, TPED, NBE, NKE Series 2000

Supply of Machinery (Safety) Regulations 2008

Standard used: EN 809:1998 + A1:2009

The Ecodesign for Energy-Related Products and Energy Information Regulations 2019.

The Ecodesign for Energy-Related Products and Energy Information Regulations 2021.

The Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Regulations 2019

Standards used: EN IEC 63000:2018

Products with motors marked: HMI 100, HMI 200 or HMI 300, and CIM 250 or CIM 270

Radio Equipment Regulations 2017

Standards used: EN 61800-5-1:2007, EN

61800-3:2004+A1:2012, EN 62479:2010, EN 301

489-1 V2.2.0, EN 301 489-17 V2.2.1, EN 301 489-52

V1.1.0, EN 301 489-7 V1.3.1, EN 300 328 V2.1.1, EN 301 511 V12.5.1

Products with motors marked: HMI 100, HMI 200 or HMI 300, and all other CÍM than CIM 250 or CIM 270, incl. none.

Radio Equipment Regulations 2017

Standards used: EN 61800-5-1:2007, EN

61800-3:2004+A1:2012, EN 62479:2010,EN 301

489-1 V2.2.0, EN 301 489-17 V2.2.1, EN 300 328

V2.1.1

Products with motors marked: HMI 101, HMI 201 or HMI 301, and CIM 250 or CIM 270

Radio Equipment Regulations 2017

Standards used: EN 61800-5-1:2007, EN

61800-3:2004+A1:2012, EN 62479:2010, EN 301

489-1 V2.2.1, EN 301 489-52 V1.1.0, EN 301 511

V12.5.1

Products with motors marked: HMI 101, HMI 201 or HMI 301

Electromagnetic Compatibility Regulations 2016

Standard used: EN 61800-3:2004+A1:2012.

This UK declaration of conformity is only valid when published as part of the Grundfos Safety Instruction and other important information (publication number 98476022).

Suzhou, Jiang Su Province, PRC, 08 September 2022

Joachim Krogshave

Head of PD CBS

Grundfos Holding A/S

Poul Due Jensens Vej 7

8850 Bjerringbro, Denmark

Manufacturer and person empowered to sign the UK declaration of conformity.

[10000433350]

UK declaration of conformity

We, Grundfos, declare under our sole responsibility that the product MTBE, to which this declaration relates, is in conformity with UK regulations, standards and specifications to which conformity is declared, as listed below:

Valid for Grundfos products:

MTBE

Supply of Machinery (Safety) Regulations 2008

Standard used: EN 809:1998 + A1:2009

The Ecodesign for Energy-Related Products and Energy Information Regulations 2021.

The Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Regulations 2019

Standards used: EN IEC 63000:2018

Radio Equipment Regulations 2017

Standards used: EN 61800-5-1:2007, EN 61800-3:2004+A1:2012, EN 62479:2010, EN 301489-1 V2.2.0, EN 301489-17 V2.2.1, EN 300328V2.1.1

This UK declaration of conformity is only valid when accompanying Grundfos instructions. 98476022 Suzhou, Jiang Su Province, PRC, 08 September 2022

Joachim Krogshave

Head of PD CBS

Grundfos Holding A/S

Poul Due Jensens Vej 7

8850 Bjerringbro, Denmark

Manufacturer and person empowered to sign the UK declaration of conformity.

[10000433355]

GB: Moroccan declaration of conformity

We, Grundfos, declare under our sole responsibility that the products to which the declaration below relates, are in conformity with Moroccan laws, orders, standards and specifications to which conformity is declared, as listed below:

Valid for Grundfos products:

TPE, TPED Series 1000

NBE, NBGE, MTBE, NKE, NKGE

TPE, TPED, NBE, NKE Series 2000

Law No 24-09, 2011 Safety of products and services and the following orders:

Order No 2573-14, 2015 Safety Requirements for Low Voltage Electrical Equipment

Standards used: NM EN 61800-5-1:2014, NM EN 809+A1:2015

Order No 2574-14, 2015 Electromagnetic Compatibility

Standards used: NM EN 61800-3:2018

This Moroccan declaration of conformity is only valid when accompanying Grundfos instructions. 98476022

NBE, NBGE, MTBE, NKE, NKGE

TPE, TPED, NBE, NKE Series 2000

NBE, NBGE, MTBE, NKE, NKGE

TPE, TPED, NBE, NKE Series 2000

Suzhou, JiangSu Province, PRC, 08 September 2022

Joachim Krogshave

Head of PD CBS

Grundfos Holding A/S

Poul Due Jensens Vej 7

8850 Bjerringbro, Denmark

GB: Manufacturer and person empowered to sign the Moroccan declaration of conformity.

GB: Ukrainian declaration of conformity

We, Grundfos, declare under our sole responsibility that the products to which the declaration below relates, are in conformity with Ukrainian resolutions, standards and specifications to which conformity is declared, as listed below:

Valid for Grundfos products:

TPE, TPED Series 1000

NBE, NBGE, NKE, NKGE

TPE, TPED, NBE, NKE Series 2000

Resolution No. 62, 2013 - Technical Regulations on Safety of Machines

Resolution No. 533, 2018 - Amendments to some provisions

Standards used: ДСТУ EN 809:2015

Resolution No 804, 2018 - Establishing a Framework for the Setting of Ecodesign Requirements for Energy-related Products

Resolution No. 139, 2017 - Technical Regulations on Use of Certain Hazardous Substances in Electrical and Electronic Equipment

Standards used: ДСТУ EN IEC 63000:2020

Resolution No. 1077, 2015 - Technical Regulations on Electromagnetic Compatibility

Resolution No. 533, 2018 - Amendments to some provisions

Standards used: ДСТУ EN 61800-3:2015

Resolution No. 355, 2017 - Technical Regulation on Radio Equipment

103, Stolychne Shose, UA-03026 Kyiv, Ukraine

Phone: [phone]

Email: [e-mail]

This Ukrainian declaration of conformity is only valid when accompanying Grundfos instructions. 98476022

NBE, NBGE, NKE, NKGE

TPE, TPED, NBE, NKE Series 2000

Suzhou, Jiang Su Province, PRC, 08 September 2022

Joachim Krogshave

Head of PD CBS

Grundfos Holding A/S

Poul Due Jensens Vej 7

8850 Bjerringbro, Denmark

GB: Manufacturer and person empowered to sign the Ukrainian declaration of conformity

GB: Ukrainian declaration of conformity

We, Grundfos, declare under our sole responsibility that the products to which the declaration below relates, are in conformity with Ukrainian resolutions, standards and specifications to which conformity is declared, as listed below:

Valid for Grundfos products:

MTBE

Resolution No. 62, 2013 - Technical Regulations on Safety of Machines

Resolution No. 533, 2018 - Amendments to some provisions

Standards used: ДСТУ EN 809:2015

Resolution No. 139, 2017 - Technical Regulations on Use of Certain Hazardous Substances in Electrical and Electronic Equipment

Standards used: ДСТУ EN IEC 63000:2020

Resolution No. 1077, 2015 - Technical Regulations on Electromagnetic Compatibility

Resolution No. 533, 2018 - Amendments to some provisions

Standards used: ДСТУ EN 61800-3:2015

Resolution No. 355, 2017 - Technical Regulation on Radio Equipment

Standards used: ДСТУ EN 61800-5-1:2015, ДСТУ EN 61800-3:2015, ДСТУ EN 62479:2015, ДСТУ ETSI EN 301 489-1:2019, ДСТУ ETSI EN 301 489-17:2008, ETSI EN 301 489-52 V1.1.0, ДСТУ ETSI EN 301 489-7:2008, ДСТУ ETSI EN 300 328:2017, ДСТУ ETSI EN 301 511:2016

Importer address:

LLC Grundfos Ukraine, Business Center Europe

103, Stolychne Shose, UA-03026 Kyiv, Ukraine

Phone: [phone]

Email: [e-mail]

This Ukrainian declaration of conformity is only valid when accompanying Grundfos instructions. 98476022

Suzhou, Jiang Su Province, PRC, 08 September 2022

Joachim Krogshave

Head of PD CBS

Grundfos Holding A/S

Poul Due Jensens Vej 7

8850 Bjerringbro, Denmark

GB: Manufacturer and person empowered to sign the Ukrainian declaration of conformity

TP(D), TPE(D), TPE2 (D), TPE3 (D), NK, NK(G)E, NB, NB(G)E, MTB

TP(D), TPE(D), TPE2 (D), TPE3 (D), NK, NK(G)E, NB, NB(G)E, MTB

Пайдалану бойынша нускаулык

TP(D), TPE(D), TPE2 (D), TPE3 (D), NK, NK(G)E, NB, NB(G)E, MTB

TP(D), TPE(D), TPE2 (D), TPE3 (D), NK, NK(G)E, NB, NB(G)E, MTB

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vtnwptnjwl»; TP TC 020/2011 «Sthuhlywlqwl uhqngutnh tltynnwuwqluhwlywlu hawuuntntghnlrjwl vtnwptnjwl»:

TP, TPD, TPE, TPED

http://net.grundfos.com/qr/i/98777373

NB, NBG, NBE, NBGE

http://net.grundfos.com/qr/i/98848768

TPE(D), NB(G)E, NK(G)E, TPE(D) серии 2000

до 11 кВт

http://net.grundfos.com/qr/i/99153908

Last updated: June 2022

www.grundfos.com/tr

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Tel.: [phone]

Fax: [phone]

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GRUNDFOS Canada inc.

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9847602211.2022

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