RW-200-280

Summary

Product identification

The Sulzer RW 200 / RW 280 series are compact submersible mixers designed for flushing and cleaning pump sumps. They prevent sedimentation deposits and floating scum.

An example identification code RW 2022 13/4 Ex breaks down as:

• RW: Mixer series
• 20: Propeller diameter (cm) nominal
• 2: Propeller type
• 2: Hydraulic number
• 13: Motor power P2 kW x 10 (e.g., 1.3 kW)
• 4: Number of poles
• Ex: Motor version (EX only on request)

Operating limits

• Maximum continuous running time: 1 hour
• Maximum total running time: Up to 8 hours in every 24 hours
• Maximum allowable medium temperature: 40 °C
• Sump cleaning capacity:
  • Up to Ø 5 m or 24 m²
  • RW 200: Up to Ø 3.5 m
  • RW 280: Up to Ø 5.0 m
  • RW 200 (rectangular): 3.0 x 5.0 m
  • RW 280 (rectangular): 4.0 x 6.0 m

Feed water

For optimum selection in general mixing applications, the following information is required:

• Application
• Tank / sump dimensions
• Medium to be mixed
• Viscosity and specific weight of medium
• Temperature, dry matter content etc.

Electrical

• Motor type: 3-phase, 4-pole, modular motor
• Minimum speed: 1 450 r/min
• Insulation class: F
• Protection class: IP 68
• Thermal protection: Thermal sensors in the stator provide warning and switch-off if excessive motor temperatures are reached.
• Standard cable: 10 m cable with free cable ends.

Technical Data (50 Hz)

*P1 = Power taken from mains. **P2 = Power at motor shaft.

Mechanical / hydraulic

• Construction: Water-pressure-tight encapsulated modular motor with cast iron housing, oil chamber, and propeller, forming a compact, robust unit.
• Rotor shaft: Supported in lubricated-for-life ball bearings.
• Shaft sealing: Tandem shaft sealing with lip seal and silicon carbide mechanical seal as standard. Viton mechanical seal option available.
• Solids protection: Patented solids deflection ring protects the mechanical seal from damage by ingress of solid or fibrous matter.
• Propeller: Blockage-free, cast iron, 2-blade propeller.
• Adjustment: Mixer position can be adjusted horizontally or vertically (± 30°) on the mounting bracket for optimum flow direction. Horizontal adjustment is not possible in guide rail installations.
• Standard supply: Coupling bracket, adjusting plate, and 10 m cable with free cable ends.

Materials

• Motor housing: Cast iron EN-GJL-250
• Motor shaft: Stainless steel 1.4021 (AISI 420)
• Oil chamber: Cast iron EN-GJL-250
• Propeller: Cast iron EN-GJL-250
• Fasteners: Stainless steel 1.4401 (AISI 316)

Accessories

• Mounting brackets:
  • Wall or floor (Part no. 62995000)
  • Wall (extended) (Part no. 62990006)
  • Pipe G 1½” (Part no. 62990007)
  • Guide rail 60 x 60 mm open (Part no. 61265048)
  • Guide rail 60 x 60 mm closed (Part no. 61265049)
  • Guide rail 50 x 50 mm open (Part no. 61265050)
  • Guide rail 50 x 50 mm closed (Part no. 61265051)
• Concrete base: (Part no. 62990008)

Dimensions and Weights

• Propeller angle: 16°
• Weight:
  • RW 200: 26.0 kg
  • RW 280: 32.0 kg
• Overall dimensions: See the official PDF for exact tabulated values and detailed diagrams.

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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