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CronoNorm-NLG 300/550-355/4 | Wilo
Similar to figure

CronoNorm-NLG 300/550-355/4

Article number: 4461281
Technical data
Hydraulic data
Maximum operating pressure PN 16 bar
Min. fluid temperature Tmin -20 °C
Max. fluid temperature Tmax 120 °C
Min. ambient temperature Tmin -15 °C
Max. ambient temperature Tmax 40 °C
Motor data
Mains connection 3~400 V, 50 Hz
Voltage tolerance ±10 %
Rated power P2 355 kW
Motor efficiency class IE3
Rated current IN 617 A
Rated speed n 1480 1/min
Power factor cos φ100 0.86
Insulation class F
Installation dimensions
Pipe connection on the suction side DNs DN 350
Pipe connection on the discharge side DNd DN 300
Materials
Pump housing Ductile cast iron
Impeller Grey cast iron
Shaft Stainless steel
Mechanical seal AQ1EGG
Lantern Ductile cast iron

NLG

Dimensions A1 20 mm
Dimensions A2 280 mm
Dimensions B2 830 mm
Dimensions H 1322 mm
Dimensions H1 470 mm
Dimensions H2 650 mm
Dimensions H3 697 mm
Dimensions L 2858 mm
Dimensions L1 2520 mm
Dimensions L2 250 mm
Dimensions L3 1010 mm
Dimensions L4 2570 mm
Dimensions S1 300 mm
Dimensions S2 28 mm
Dimensions X 250 mm
Dimensions Ød 70 mm
Dimensions DN1 DN 350
Dimensions DN2 DN 300
Product data
Brand Wilo
Product description CronoNorm-NLG 300/550-355/4
Article number 4461281
EAN number 4048482628226
Colour Green
Minimum order quantity 1
Date of sales availability 2015-09-01
Packaging
Packaging type One-way pallet
Packaging property Transport packaging
Pieces per pallet 1
Number per layer 1
Dimension, weight
Length with packaging 2900 mm
Length L 2858 mm
Height with packaging 1537 mm
Height H 1347 mm
Width with packaging 1100 mm
Width W 830 mm
Gross weight, approx. m 3235 kg
Net weight, approx. m 3194 kg
Tender text

Single-stage centrifugal pump as baseplate pump. With axial suction port and radial discharge port, for installation on a base. Pump with support foot and flanged bearing bracket, elastic spacer coupling, coupling guard and motor mounted to same baseplate.

IEC motor with 3 PTC thermistor sensors. Shaft sealing via non-cooled mechanical seal up to max. 120 °C. Spheroidal cast iron housing, stainless steel shaft, grey cast iron impeller (bronze impeller available at additional charge).

Materials
Pump housing Ductile cast iron
Impeller Grey cast iron
Lantern Ductile cast iron
Shaft Stainless steel
Shaft seal AQ1EGG
Operating Data
Min. fluid temperature Tmin -20 °C
Max. fluid temperature Tmax 120 °C
Maximum operating pressure p 16.0 bar
Max. ambient temperature Tmax 40 °C
Minimum efficiency index (MEI) ≥0.4
Motor data
Mains connection 3~400 V, 50 Hz
Voltage tolerance ±10 %
Motor efficiency class IE3
Rated power P2 355000 W
Rated speed n 1480 1/min
Rated current IN 617 A
Power factor cos φ100 0.86
Motor efficiency 50% ηM 50% 96.5 %
Motor efficiency 75% ηM 75% 96.8 %
Motor efficiency 100% ηM 100% 96.5 %
Insulation class F
Installation dimensions
Pipe connection on the suction side DNs DN 350
Pipe connection on the discharge side DNd DN 300
Ordering information
Brand Wilo
Net weight, approx. m 3194 kg
Product description CronoNorm-NLG 300/550-355/4
Article number 4461281
Documents

Installation and operating instructions

Wilo-CronoNorm-NL, NLG

Article Number 4168440
Edition 1111
Number of pages 1
ZIP (47 MB)

Wilo-CronoNorm-NL, NLG

Article Number 4168440
Edition 1111
Number of pages 59
PDF (3 MB)

Wilo-CronoNorm-NL, NLG

Article Number 4168440
Edition 1111
Number of pages 58
PDF (3 MB)

Certification booklet

Wilo-CronoNorm NLG, Wilo-CronoNorm NLG (Bare Shaft)

Article Number 6088779
Edition 2022-05
Number of pages 20
PDF (11 MB)
BIM/CAD

3D_DWG

4461281, NLG300/550-355/4

DWG (2 MB)

3D_STEP

4461281, NLG300/550-355/4

STP (2 MB)

2D_DWG_TOP

4461281, NLG300/550-355/4

DWG (52 KB)

2D_DWG_FRONT

4461281, NLG300/550-355/4

DWG (50 KB)

2D_DWG_RIGHT

4461281, NLG300/550-355/4

DWG (44 KB)
Accessory

Pump control/accessories (25)

Differential pressure detection (7)

Motor protection (1)

Services

With Wilo as your partner, you can not only be sure of choosing high-quality product solutions, but also of benefiting from a comprehensive, worry-free package of well thought-out services. We collaborate to develop a service concept tailored to your individual needs; with our expertise and personal consultancy, we make sure that the operation of your systems is as energy-efficient, reliable and economical as possible. All the while our competent Wilo service technicians are ready to assist you with fast, reliable and on-time support.

Read more

Recommended services

Supervision
Supervision Norm-/SCP pumps
    
2219322

Wilo supports during the concept phase to ensure quality work and cost efficiency. Our competent and qualified Wilo Service will support you with recommendations and technical advice throughout the entire project.

Supervision includes:

  • Regular on-site visits ensure the quality of information and advice
  • Technical consultancy, also available on site
  • Status report with recommendations after the visit
  • Comprehensive support from a Wilo expert
Commissioning
Commissioning Norm-/SCP pumps
    
2160452

For perfect functioning of the pump(s) / system(s), it is recommended to have the commissioning carried out by the works' own WILO SE Customer Service Department. Optimum setting and efficient operation of the system are ensured as a result. Commissioning is comprised of the following points:

  • Commissioning of pump(s) according to checklist
  • Functional check of pump(s)
  • Alignment of pump(s)
  • Practice-oriented operation instruction
  • Wilo commissioning protocol

The price for commissioning only applies to system(s) which have been installed in accordance with the installation and operating instructions and state-of-the-art technology. No costs for any materials which may be required are included.

-NET-

Maintenance
Maintenance BASIC Norm-/SCP pumps
    
2160467

In order to ensure and guarantee operational reliability of the pumps/systems, it is recommended to have regular and DIN-compliant inspections and maintenance carried out by the works' own WILO SE Customer Service Department. The tasks are carried out in accordance with DIN 31051 / DIN EN 13306. The tasks comprise the following points:

  • Visual inspection of the pumps/systems
  • Mechanical check
  • Electrical check
  • Testing pressure vessels that may be on hand
  • Review and, if necessary, adjustment of the system parameters
  • Creating a maintenance protocol

Scheduling and organisation is performed by WILO. Other individual maintenance offers are possible on request. The price of the maintenance is valid inside Germany.

-NET-

Maintenance COMFORT Norm-/SCP pumps
    
2160482

In order to ensure and guarantee operational reliability of the pumps/systems, it is recommended to have regular and DIN-compliant inspections and maintenance carried out by the works' own WILO SE Customer Service Department. The tasks are carried out in accordance with DIN 31051 / DIN EN 13306. The tasks comprise the following points:

  • Visual inspection of the pumps/systems
  • Mechanical check
  • Electrical check
  • Testing and possible filling of pressure vessels that may be on hand
  • Review and, if necessary, adjustment of the system parameters
  • Creating a maintenance protocol
  • Consumable materials are included in the contract price
  • Elimination of payroll and travel expenses for deployments between maintenance intervals (during normal service hours)

Scheduling and organisation is performed by WILO. Other individual maintenance offers are possible on request. The price of the maintenance is valid inside Germany.

-NET-

Wilo-Live Assistant
Wilo-Live Assistant Service
    
2216415

The Wilo-Live Assistant is a technical advisor at your side during pump service. By using the Wilo-Live Assistant, our expert advisers can support you in the boiler or equipment room via video transmission – live and in real time. You use your smartphone to show the installation set-up, while the Wilo expert follows everything on their screen. They can see the components as well as other details and can thus determine where the fault or breakdown originates. We prevent downtime and ensure operational reliability of your pumps and systems!

The Wilo-Live Assistant includes:

  • Interactive live support via video chat
  • Direct contact with an expert
  • Just-in-time solution to ensure maximum operational reliability of your pumps and systems

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Service packages
Service Package L Norm-/SCP pumps
    
2219698

The Wilo service offers predefined service packages in three sizes to make it easier to combine individual services.

The Wilo-Service package L includes:

  • Installation check
  • Supervision
  • Commissioning
  • Maintenance
  • Energy Solutions
  • WiloCare Premium
  • Wilo-Live Assistant

Optional add-on services:

  • System Optimisation
  • Repairs
  • Extended Warranty
Service Package M Norm-/SCP pumps
    
2219669

The Wilo service offers predefined service packages in three sizes to make it easier to combine individual services.

The Wilo-Service package M includes:

  • Installation check
  • Supervision
  • Commissioning
  • Maintenance
  • WiloCare Comfort
  • Wilo-Live Assistant

Optional add-on services:

  • System Optimisation
  • Energy Solutions
  • Repairs
  • Extended Warranty
Service Package S Norm-/SCP pumps
    
2219640

The Wilo service offers predefined service packages in three sizes to make it easier to combine individual services.

The Wilo-Service package S includes:

  • Installation check
  • Commissioning
  • Maintenance
  • WiloCare Basic
  • Wilo-Live Assistant

Optional add-on services:

  • System Optimisation
  • Energy Solutions
  • Supervision
  • Repairs
  • Extended Warranty
Extended Warranty
Extended Warranty Norm-/SCP pumps
    
2219591

In combination of a new pump or system Wilo offers an extended warranty of up to five years in combination with commissioning and maintenance by the Wilo Service.

Extended warranty includes:

  • Full protection and predictable cost security
  • Regular maintenance work by the Wilo Service
Installation
Installation Norm-/SCP pumps
    
2219357

The Wilo service offers installation of our pumps or pumping systems. We offer an end-to-end process from gathering information on site to installing our product in the overall plant. An optimal installation set-up and the interaction of various individual factors lay the foundation for long-term operational safety.

Installation includes:

  • Professional inspection
  • Provision of components/materials from Wilo and third-party suppliers
  • Installation of pipelines and electronics
  • Test runs
System Optimisation
System Optimisation Norm-/SCP pumps
    
2219252

The Wilo Service offers proactive system optimisation by optimising settings and doing minor adjustments to ensure operational reliability. System Optimisation includes among others:

  • Overhaul of pumps/systems to restore full performance
  • Addition of new technologies or functions in older systems to save on capital expenditures (retrofitting)
Energy Solutions
Energy Solutions Norm-/SCP pumps
    
2219287

Wilo Service offers a proactive support to point out possible energy savings. Our service creates an overview of all installed assets to show how the energy consumption of pumps or systems can be reduced. We offer targeted consultancy and analysis, including the involvement of subsidies as well as comprehensive support around the changeover to high-efficiency technologies. Wilo-Energy solution includes:

  • Detailed assessment of the life cycle costs (LCC analysis)
  • Energy audit including information about energy saving potential
  • Proactive recommendation of replacement options
  • Improving the environmental performance of your system
  • Support in the changeover to Wilo high-efficiency pumps
Repair
Repair Norm-/SCP pumps
    
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Wilo Service draws on their competence and experience while consulting on site to decide whether the pump can actually be repaired on site or has to be sent in for a factory repair. Wilo also provides spare parts or a replacement pump to restore the operational reliability of the system.

Repair includes:

  • Verification and elimination of error causes by experienced Wilo experts
  • Non-binding estimate for repairs
  • Electric-hydraulic test run to ensure correct data regarding functionality, quality and performance of the pump or system
  • Coating of various pump or system components for an optimised efficiency factor
  • Use of genuine spare parts only
  • Documentation of the repair in the service report