e-Line

Summary

Product identification

The Lowara e-LNE Series consists of single-impeller centrifugal pumps with in-line suction and delivery flanges. These pumps feature a "Back pull-out" design, allowing the impeller, adapter, and motor to be extracted without disconnecting the pump body from the piping system.

The series is available in two main constructions:

• LNEE: Extended shaft
• LNES: Stub shaft

The product line is compliant with ErP 2009/125/EC directives, equipped with IE3 motors, and meets hydraulic efficiency requirements.

Standard materials:

• Casing: Cast iron
• Impeller: Cast iron (also available in bronze and stainless steel)
• O-Ring: EPDM
• Mechanical seal: Carbon / Silicon carbide / EPDM (BQ1EGG-WA)

Operating limits

• Fluid temperature range:
  • Standard version (with mechanical seal BQ1EGG-WA and EPDM gasket): -25 to +120 °C
  • Versions on request (depending on mechanical seal and gasket): -20* or -25 to +120 or +140 °C
  • *Fluoro-elastomer: FPM (old ISO), FKM (ASTM & new ISO).
• Maximum operating pressure:
  • Standard version (with mechanical seal BQ1EGG-WA): 16 bar @ 90 °C and 10 bar @ 120 °C
  • Versions on request (with other mechanical seals): 16 bar @ 120 °C and 14.9 bar @ 140 °C
• Maximum ambient temperature: 40 °C
• Pump rotation: Anti-clockwise when facing pump’s suction port.
• Counter-flanges: Not included with the pump.

Feed water

The pumps are designed for use with clean water. For ErP compliance testing, clean water at a temperature not higher than 40 °C is used.

Electrical

The e-LNE Series pumps are equipped with IE3 efficiency motors, compliant with ErP 2009/125/EC directives.

Motor specifications:

• Type: Squirrel cage in short circuit enclosed construction with external ventilation (TEFC).
• Poles: 2-pole and 4-pole ranges.
• Protection degree: IP55 as motor (EN 60034-5), IPX5 as electro-pump (EN 60529).
• Performance: According to EN 60034-1.
• Efficiency level: IE3 (three-phase 0.75 to 375 kW).
• Insulation class: 155 (F).
• Standard voltage (50 Hz):
  • 1 x 220-240 V for power up to 2.2 kW.
  • 3 x 220-240/380-415 V for power up to 3 kW.
  • 3 x 380-415/660-690 V for power above 3 kW.
• Overload protection:
  • Single-phase version (220-240 V 50 Hz): Built-in automatic reset overload protection up to 1.5 kW. For higher powers, protection must be provided by the user.
  • Three-phase version: Overload protection to be provided by the user.
• PTC: Included as standard only for WEG motors (one per phase, 155 °C).

ErP motor efficiency requirements (Regulation (EC) No 640/2009 and (EU) No 4/2014):

• From 1st January 2015: Motors with 7.5 to 375 kW rated powers must have efficiency level IE3 (or IE2 + Variable Speed Drive).
• From 1st January 2017: Motors with 0.75 to 375 kW rated powers must have efficiency level IE3 (or IE2 + Variable Speed Drive).

For detailed motor performance data, including current, efficiency, power factor, and noise levels, please refer to the official PDF datasheet.

Mechanical / hydraulic

• Pump design: Single-impeller centrifugal pump with in-line suction and delivery flanges. Features a "Back pull-out" design.
• Hydraulic performance compliance: ISO 9906:2012 – Grade 3B (Grade 2B and 1B available upon request).
• Maximum delivery:
  • 2 poles range: 305 m³/h
  • 4 poles range: 900 m³/h
• Maximum head:
  • 2 poles range: 95 m
  • 4 poles range: 57 m

ErP pump ecodesign requirements (Regulation (EU) No 547/2012) for end-suction close-coupled in-line pumps (ESCCi):

• Efficiency assessment refers to the pump only (not the pump and motor assembly).
• Applies to pumps with one impeller.
• Nominal pressure PN not higher than 16 bar (1600 kPa).
• Minimum nominal flow not less than 6 m³/h.
• Maximum nominal power at the shaft not higher than 150 kW.
• Designed to operate at a speed of 2900 min⁻¹ (50 Hz 2-pole electric motors) with a head not greater than 140 metres.
• Designed to operate at a speed of 1450 min⁻¹ (50 Hz 4-pole electric motors) with a head not greater than 90 metres.
• Use with clean water at a temperature ranging from -10 °C to 120 °C (test performed with cold water at a temperature not higher than 40 °C).

Minimum Efficiency Index (MEI):

• Water pumps shall have index MEI 0.4 as minimum from 1st January 2015.
• The Lowara e-LNE series is ErP compliant, having an index MEI equal or higher than 0.4.
• The benchmark for most efficient water pumps is MEI ≥ 0.70.
• The MEI is based on the full impeller diameter. The efficiency of a pump with a trimmed impeller is usually lower.
• Operation with variable duty points may be more efficient and economic when controlled by a variable speed drive.

For exact tabulated MEI values for specific models, please refer to the official PDF datasheet.

Mechanical seals:

• Mechanical seals have mounting dimensions according to EN 12756 and ISO 3069.
• Standard mechanical seal: BQ1EGG-WA (Carbon / Silicon carbide / EPDM elastomers, AISI 316 springs and other components).
• Pressure/temperature application limits for standard seal: 16/10 bar, -25 to +90/+120 °C.
• Other mechanical seal types and their pressure/temperature limits are available, including combinations of Silicon carbide, Tungsten carbide, Antimony impregnated carbon, Resin impregnated carbon, EPDM, and FKM (FPM) elastomers.

For detailed material lists of pump components (volute casing, casing cover, impeller, stub shaft, wear ring, impeller lock nut/washer/key, plugs, O-Ring, gasket, motor adapter, fastening bolts/screws, pump base), please refer to the official PDF datasheet.

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Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions from the complete OEM PDF datasheet. Contractual data must always match the specific OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror