Wilo-Actun FIRST-SPU4

Multistage 4" submersible pump with a shroud design for vertical and horizontal installation

• For water supply from boreholes and rainwater reservoirs
• For domestic water supply, sprinkling and irrigation
• Pressure boosting
• Lowering of the water level
• For pumping water without long-fibre, abrasive constituents

• Multistage submersible pump with radial and semi-axial impellers
• Rewindable, oil-filled motor
• Integrated non-return valve
• NEMA coupling
• Single-phase or three-phase AC motor

• Mains connection: 3~400 V, 50 Hz
• Submerged operating mode: S1
• Fluid temperature: 3-30 °C
• Minimum flow rate at motor: 0.2 m/s or 0.5 m/s (depending on performance)
• Max. sand content: 50 g/m3
• Max. number of starts: 10 -20/h (depending on performance)
• Max. immersion depth: 200 m
• Protection class: IP68
• Pressure connection: NPT 1¼, NPT 1½, NPT 2

• Hydraulics housing: Stainless steel 1.4301
• Impellers: Noryl
• Pump shaft: 1.4104 stainless steel
• 1.4301 stainless steel motor housing
• Motor shaft: 1.4305 stainless steel

Submersible pump for vertical and horizontal installation.

Hydraulics

Multistage submersible pump with radial or semi-axial impellers with a shroud design. Integrated non-return valve. All parts that come into contact with the fluid are made from corrosion-resistant materials.

Motor

Rewindable, corrosion-resistant alternating current motor or three-phase current motor for direct starting. Sealed using a mechanical seal with self-lubricating bearings with oil filling.

Cooling

The motor is cooled by the fluid. The motor must always be immersed when operated. The limit value for the maximum fluid temperature may not be exceeded. The limit value for the minimum volume flow may not be exceeded. Vertical installation is possible with or without cooling shroud. A cooling shroud is required for horizontal installation.

• Hydraulics + motor completely assembled
• 2.0/2.5 m connection cable (cross-section: 4 x 1.5 mm²)
• Installation and user manual

• Motor variants: 1~230 V, 50 Hz; 3~400 V, 50 Hz; 1~220 V, 60 Hz; 3~220 V, 60 Hz; 3~380 V, 60 Hz; 3~460 V, 60 Hz

• Mains connection: 3~400 V, 50 Hz
• Submerged operating mode: S1
• Fluid temperature: 3-30 °C
• Minimum flow rate at motor: 0.2 m/s or 0.5 m/s (depending on performance)
• Max. sand content: 50 g/m3
• Max. number of starts: 10 -20/h (depending on performance)
• Max. immersion depth: 200 m
• Protection class: IP68
• Pressure connection: NPT 1¼, NPT 1½, NPT 2

• Hydraulics housing: Stainless steel 1.4301
• Impellers: Noryl
• Pump shaft: 1.4104 stainless steel
• 1.4301 stainless steel motor housing
• Motor shaft: 1.4305 stainless steel

Submersible pump for vertical and horizontal installation.

Hydraulics

Multistage submersible pump with radial or semi-axial impellers with a shroud design. Integrated non-return valve. All parts that come into contact with the fluid are made from corrosion-resistant materials.

Motor

Rewindable, corrosion-resistant alternating current motor or three-phase current motor for direct starting. Sealed using a mechanical seal with self-lubricating bearings with oil filling.

Cooling

The motor is cooled by the fluid. The motor must always be immersed when operated. The limit value for the maximum fluid temperature may not be exceeded. The limit value for the minimum volume flow may not be exceeded. Vertical installation is possible with or without cooling shroud. A cooling shroud is required for horizontal installation.

• Hydraulics + motor completely assembled
• 2.0/2.5 m connection cable (cross-section: 4 x 1.5 mm²)
• Installation and user manual

• Motor variants: 1~230 V, 50 Hz; 3~400 V, 50 Hz; 1~220 V, 60 Hz; 3~220 V, 60 Hz; 3~380 V, 60 Hz; 3~460 V, 60 Hz