UO-D 1500 CD
UO-D 7000 ND/FU
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UO-D 3000 ND

Reference: 5110010062

For desalination of softened drinking water according to drinking water regulations (free chlorine not detectable). Mounted on a Stainless steel skid with horizontal membrane housing

Search Name 387 019
Item Name UO-D 3000 ND
Brand Herco
  • Complete unit skid mounted
  • RO Digital controller
  • Recovery: up to 75%
  • Salt rejection percentage: 97%
  • Working pressure: 10 to 14 bar (depending on type)
  • Voltage: 3 x 400V / 50 Hz
  • Digital flow meters
  • Profinet interface (option)

Unit design

  • Stainless steel main frame with plastic front panel.
  • Special inlet filter with 5 µm-filter cartridge and 2 pressure gauges,
  • high pressure pump with frequency converter (only Series ND/FU) low noise, multi-stage centrifugal type,
  • low energy spirally wound modules with energy-effici- ent PA/PS composite membranes in GRP vessels.
  • Valves such as sampling valves for feed water and perme-  ate (each vessel and total), inlet solenoid valve, stainless l steel valves to regulate the flow rate of  permeate,  con- centrate and concentrate recirculation flow rate, permeate check valve for each pressure vessel.
  • Pressure sensors for pump feed pressure, operating pres- sure and concentrate pressure.
  • Flow sensors for permeate, concentrate and   concentrate recirculation flow rate.
  • Conductivity measurement permeate with temperature compensation.
  • Control cabinet with lockable main switch, electrical switchgear for control of the high-pressure pump.
  • Unit is completely wired, pre-assembled and ready for ins- tallation. Electrical equipment in accordance with VDE 0100 part 600, VDE 0113 part 1.

Microprocessor control RO digital

  • for fully automatic monitoring and control of Reverse Osmosis Unit.
  • Process visualization with central display of operational status and data (analogue und digital values ) and hours of operation on 4-line, backlit LCD text display. Simple menu-driven operation of the controller with 6 buttons.
  • Automatic logging of relevant operating data (analogue and digital data, 1960 data sets), storage interval programmable.
  • Highest operational safety due to adjustable alarms and limits of the operating parameters with selectable system response.
  • Operating conditions: permeate production, permeate rejection / recirculation, concentrate displacement / flushing, intermittent flushing when system is idle, shutdown by an external signal.
  • Analogue inputs: permeate conductivity (temperature compensated) permeate temperature, feed water, operating and concentrate pressure, flow rates of permeate and concentrate, calculated feed water flow, 2 additional programmable analogue inputs (e.g. for pressure, flow, level measurement).
  • Digital Inputs: RO-unit start, RO-unit stop, hard water / motor protection, external stop, 3 universal inputs (free configurable)
  • Analogue outputs: 2 universal outputs 4-20mA, e.g. for DDC.
  • Digital outputs: high-pressure pump, valve outputs 3x (24 VDC) for example for feed water, concentrate flushing,permeate rejection or recirculation, collective fault indication as a floating changeover contact, universal output.
  • LED indicators for power and fault, fault alarms as plain text in the display.
Footnotes The units are designed for a maximum TDS of 1,000 mg/l, a water temperature of 15°C, a maximum colloidal index of 3 and free permeate outlet. Under these conditions, the unit still reaches design permeate flow after three years of operation. The permeate recovery depends on the raw water quality and the type of pretreatment.
Additional Options
  • Limitron 1″
  • Permeate recirculation PR3500/24
  • Concentrate rinsing KSE3500/24
  • Connector kit (ARA DN 25) for cleaning set MRA
  • PROFINET-Interface
Height 1650 mm
Membranes 4040 x 9
Controller RO Digital
Width 3500 mm
Permeate Flow 3000 l/h
Recovery 75 %
Max Operating Pressure 14 bar
pH Range 3 – 11
Feedwater Connection DN 32
Permeate/Concentrate Connection DN 25
Minimal Salt Rejection 97 %
Voltage 3 x 400V / 50Hz
Motor Power 4 Kw
Pre-fusing 20 A
Conductivity Range 1 – 999 µS/cm
Feedwater Pressure min./max. 2/6 bar
Feedwater Temperature min./max. 5/35 °c
Ambient Temperature Max. 40°c
Weight 340 kg
Depth 710 mm