Hydro-Unit Cube

Summary

Product Identification

The Hydro-Unit CUBE is a two-pump booster unit available in Cube FR (Multi Frequency) and Cube DOL (Direct On Line) series. It consists of DPVME vertical multi-stage centrifugal pumps.

Operating Limits

• Ambient temperature: 0 - 30 °C
• Liquid temperature: +4 - 40 °C
• Maximum working pressure: 1,000 kPa
• Supply pressure:
  • Minimum: 120 kPa (non-cavitating)
  • Maximum: Supply pressure plus pump pressure must not exceed 1,000 kPa
• Maximum level: 1000 m above sea level
• Minimum frequency (with VFD): 10 Hz (to ensure sufficient cooling)

Feed Water

The unit is suitable for (drinking) water supply systems and pressure boosting in apartment buildings. No specific feed water quality parameters are provided.

Mechanical / Hydraulic

• Water Leakage Detection: An internal detector triggers an alarm if water is present inside the Cube, active in both horizontal and vertical positions.
• Membrane Tank: 8 litres, flow-through type, ensuring water inside the tank is always refreshed with flow.
• Basic Materials:
  • Hydraulic part casting parts: 1.4308 (AISICF8)
  • Sealing pump: EPDM
  • Non return valve: POM, Rubber
  • Valve: 1.4301 (AISI304)
  • Manifolds: 1.4301 (AISI304)
  • Membrane tank connection part: AISI, Butyl-rubber
  • Pressure transmitter: 1.4305 (AISI303)
  • Housing: PP 30 V1
  • Miscellaneous: May contain brass parts
• Construction / Pressure Class: PN 10
• Run-dry Protection: Provided by a pressure transmitter.
• Discharge Pressure Control: Provided by a pressure transmitter.
• Manifold Connections: G 5/4 or G 6/4 (AISI304 material).
• Fittings: AISI304 G 5/4.
• Mass: 85 kg (for listed HU CUBE 2 DPVME FR and DOL models).
• Dimensions: See the official PDF for detailed dimensional drawings.
• Included Components:
  • Two DPVME vertical multi-stage centrifugal pumps with AISI304 wetted parts and built-in non-return valves.
  • Four AISI304 ball valves.
  • AISI304 manifolds, without dead-spot pipe.
  • Run-dry protection kit (pressure transmitter).
  • Discharge pressure control kit (pressure transmitter).
  • 8 litres flow-through membrane tank.
  • Completely enclosed housing with Cube control system.
  • For each pump: a frequency converter (MC MF) or a motor starter relay (MC DOL).
  • 2.5 m cable with a junction box complete with load switch.
  • For each pump: a thermal motor protection switch.
  • Fail-safe potential free failure outputs (urgent and non-urgent, NO and NC) with external plug connection.
  • 4 vibration isolators.
• Cube Control Microprocessor Module Functions:
  • Pressure control
  • Pump staging
  • Continuously optimised minimum-run time of the pumps
  • Adjustable correction factor for pressure loss in the system
  • 24-hours test-run function
  • Adjustable delay of the underpressure/run-dry protection
  • Display options: current system values, pump status, operating hours, comprehensive failure interface.

Electrical

• Standard Motor Data (3-phase, 2-pole, 50 Hz):
  • Rated Power Output [kW]: 0.37, 0.55, 0.75, 1.1, 1.5, 2.2
  • Rated Voltage [V]: 230/400
  • Rated Amperage [A]: 1.6/0.95, 2.1/1.2, 3.1/1.8, 4.21/2.4, 5.7/3.3, 8.2/4.7
  • Voltage Tolerance: 10%
  • Rated Speed [rpm]: 2865, 2880, 2865, 2870, 2900, 2870
  • Motor Efficiency: 76, 82, 80, 81, 81.8, 83.5
  • Sound Pressure [dB(A)]: 60, 60, 60, 60, 56, 56
  • Max. Starts per Hour: 50, 50, 50, 50, 50, 30
  • IP Rating: 55
• Unit Electrical Specifications:
  • Frequency: 50 Hz
  • Insulation Class (unit): IP21
  • Maximum Current (unit): 13 A (FR models), 10 A (DOL models)
  • Maximum Fuse: 16 A
  • Power Supply: 3 x 400 V + N

Performance Characteristics

Hydraulic performance curves for DPVME 2, DPVME 4, and DPVME 6 pump types are provided for both 50 Hz (~2850 rpm) and 60 Hz (~3450 rpm) operation (1 pump in operation). These curves illustrate capacity, pressure, NPSH, hydraulic efficiency, and required power. See the official PDF for exact tabulated values and performance curves.

Auxiliaries and Accessories

• Mounting Sets: Various mounting kits are available for wall mounting and different connection types (capillary and clamping) in AISI304, with sizes such as G 5/4 > 35 mm, G 5/4 > 42 mm, G 6/4 > 42 mm, G 6/4 > 54 mm, G 5/4 > G 5/4 BI, G 5/4 > G 6/4 BI, G 6/4 > G 6/4 BI, G 6/4 > G 2 BI. A wall socket with load switch (3-phase + N + Earth, 6H 16A 400V, IP66) and a plug with phase converter are also listed.
• Pressure Reducing Valves: A range of pressure reducing valves are available as accessories, with various connections (e.g., G 1/2, G 3/4, G 1, G 5/4, G 6/4, G 2, 22 mm CAP, 28 mm CAP, 35 mm CAP, 42 mm CAP, 54 mm CAP), bore sizes (DN15, DN20, DN25, DN32, DN40, DN50), pressure classes (PN15, PN16, PN25), and pressure ranges (e.g., 0.5-2 bar, 1.5-5 bar, 1.5-6 bar, 1.5-12 bar). Specific materials are listed as MS (Brass). See the official PDF for the full table of available pressure reducing valves.

Article Number Structure

The document includes a table detailing the structure of article numbers, breaking down components such as unit type, number of pumps, pump type, pump size, stages, material + pressure class, manifolds, control, starting method, construction, description, and design version.

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

Official datasheet (PDF)

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