Centrifugal pump HEF301...303

for coolantelectricsemi-submersible

Immersion Pumps HEF301...303 are plain centrifugal pumps with the impeller fitted on the driving shaft extension. They are mounted on top of the container, with the pump extension being immersed in the coolant. The HEF pump series maximizes hydraulic efficiencies with its closed impeller design. Pump and motor form a compact and space-saving unit, and the pump mechanism is gasket-less. The maximum coolant level must stay a few millimeters below the mounting flange. Closed impellers are featured in this series.

Applications

• Types of fluid: coolants
• Kinematic viscosity: 1 mm²/s (1 cSt)
• Pumping temperature: 0...60° C

Construction

• Pump body: cast iron
• Cover: cast iron
• Impellers: cast steel
• Shaft: steel
• Noise level: 60 dBA (HEF301/250), 66 dBA (HEF302/320...HEF303/380)

Technical Data (Selection)

• HEF301/250: Volume delivery at manometric delivery head: 300 l/min / 10 m, Height: 294 mm, Depth of immersion: 250 mm, Weight: 18.0 kg, Power: 0.75 kW, Voltage: 220-240 V / 380-415 V, Frequency: 50 Hz, Current: 3.24 A / 1.87 A, Speed: 2850 1/min
• HEF302/320: Volume delivery at manometric delivery head: 300 l/min / 20 m, Height: 350 mm, Depth of immersion: 311 mm, Weight: 28.0 kg, Power: 1.5 kW, Voltage: 220-240 V / 380-415 V, Frequency: 50 Hz, Current: 5.5 A / 3.2 A, Speed: 2880 1/min
• HEF303/380: Volume delivery at manometric delivery head: 300 l/min / 30 m, Height: 408 mm, Depth of immersion: 371 mm, Weight: 36.0 kg, Power: 2.2 kW, Voltage: 220-240 V / 380-415 V, Frequency: 50 Hz, Current: 7.8 A / 4.5 A, Speed: 2890 1/min

Characteristics / Technical Specifications

• Series: HEF301...303
• Pump type: Centrifugal, immersion
• Impeller type: Closed
• Mounting: Top of container, extension immersed in coolant
• Gasket-less pump mechanism
• Compact, space-saving design
• Suitable for coolants with low viscosity
• Operating temperature range: 0 to 60°C
• Materials: Pump body and cover (cast iron), Impellers (cast steel), Shaft (steel)
• Noise level: 60–66 dBA depending on model
• Power range: 0.75–2.2 kW
• Voltage options: 220-240 V, 380-415 V, 460 V
• Frequency: 50/60 Hz
• Speed: 2850–3480 1/min