CS 3400/805

Summary

Product identification

• Flygt C-pumps 3068–3800 series.
• Submersible waste and raw water pumps.

Operating limits

• General performance range: up to approx. 3000 l/s.

Feed water

• Suitable for a variety of applications, including:
  • Pumping sewage in municipal applications
  • Irrigation
  • Industrial effluent
  • Cooling water
  • Storm water
  • Process water
  • Raw water

Electrical

• Motor:
  • Squirrel cage, high performance induction motor, specially designed and manufactured by Xylem for submersible use.
  • Stator windings are trickle impregnated in resin to Class H insulation.
  • Rated at 180°C (355°F).
  • Many units provide up to 30 starts per hour.
• Motor Ratings:
  • Up to 680 kW (50 Hz)
  • Up to 1040 hp / 775 kW (60 Hz)
• Monitoring:
  • Thermal sensors embedded in the stator windings help prevent overheating.
  • Leakage sensors in the stator and oil housings, together with external monitoring equipment, are available as options.
• Cable Entry:
  • Designed to incorporate both a seal and a strain relief function.

Mechanical / hydraulic

• Construction:
  • Standard version: Made in cast iron.
  • Industrial configurations available for more demanding applications.
  • Explosion-proof versions are available.
• Installation Methods:
  • CS: A semi-permanent, free-standing installation; transportable version with pipe or hose connection.
  • CT: A vertically-mounted, permanent dry well or in-line installation with flange connections for suction and discharge pipe work.
  • CZ: A horizontally-mounted, permanent dry well or in-line installation with flange connections for suction and discharge pipe work.
  • CP: For semi-permanent wet well installations; the pump is installed with twin guide bars on a discharge connection.
• Shaft:
  • A short overhang of the shaft virtually eliminates shaft deflection, resulting in significantly increased seal and bearing life, low vibration, and quiet operation.
• Seals:
  • Two sets of mechanical shaft seals that work independently for double security, designed, patented, and manufactured by Xylem.
• Oil Housing:
  • Food-grade oil-filled compartment that lubricates the seals, diffuses heat from the motor and bearings, and provides additional security against penetration by liquids.
• Impeller:
  • Flygt Nevaclog® impeller: Designed specially for smaller Flygt C-pumps with excellent flow passing properties, eliminating parts that might cause clogging.
  • Multi-vane impellers: For bigger pumps, designed for optimum hydraulic efficiency; dynamically balanced and machined to match the requested duty point.
  • The area in the pump housing at the upper and lower shroud of the impeller has a labyrinth seal design to prevent leakage and clogging, improving efficiency.
  • Replaceable wear rings are standard.
• Seal Wear Protection:
  • Spin-out™ is a patented design that protects the outer seal by expelling abrasive particles from the seal chamber.
• Cooling System:
  • In normal applications, the surrounding liquid cools the pump motor.
  • In more demanding applications, or when dry installed, the pumps can be fitted with an integrated cooling system.

Compliance / Approvals

• All pumps are tested and approved in accordance with national and international standards (IEC 34-1 CSA).
• Explosion-proof versions are available with Factory Mutual (FM) and European Norm (EN) approvals.

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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 official OEM PDF datasheet. Contractual data must always match the specific OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror