You are here : Home | Products & Systems | Reverse Osmosis | Herco Range | Soft Water Feed | ND & NDFU | Series 2
Reverse Osmosis – ND & NDFU Series 2
[one_third padding=”0 6px 0 0″]
[su_button url=”https://www.industrialwaterequipment.co.uk/reverse-osmosis-ndfu2000/” background=”#f1f1f1″ color=”#33577a” size=”7″ wide=”yes” center=”yes” radius=”10″ icon_color=”#bebebe” text_shadow=”0px 0px 0px #676867″]2000 ND NDFU[/su_button][/one_third]
[one_third padding=”0 6px 0 0″]
[su_button url=”https://www.industrialwaterequipment.co.uk/reverse-osmosis-ndfu2500/” background=”#f1f1f1″ color=”#33577a” size=”7″ wide=”yes” center=”yes” radius=”10″ icon_color=”#bebebe” text_shadow=”0px 0px 0px #676867″]2500 ND NDFU[/su_button][/one_third]
[one_third_last padding=”0 6px 0 0″]
[su_button url=”https://www.industrialwaterequipment.co.uk/reverse-osmosis-ndfu3000/” background=”#f1f1f1″ color=”#33577a” size=”7″ wide=”yes” center=”yes” radius=”10″ icon_color=”#bebebe” text_shadow=”0px 0px 0px #676867″]3000 ND NDFU[/su_button][/one_third_last]
[one_third padding=”0 6px 0 0″]
[su_button url=”https://www.industrialwaterequipment.co.uk/reverse-osmosis-ndfu3500/” background=”#f1f1f1″ color=”#33577a” size=”7″ wide=”yes” center=”yes” radius=”10″ icon_color=”#bebebe” text_shadow=”0px 0px 0px #676867″]3500 ND NDFU[/su_button][/one_third]
[one_third padding=”0 6px 0 0″][/one_third]
[one_third_last padding=”0 6px 0 0″][/one_third_last]
[su_spacer size=”30″][su_spacer][/su_spacer]
Reverse Osmosis – ND and NDFU Series 2
ND and ND/FU Series: 2000-3500 l/h Standard RO Systems. Stand-type unit for desalination of softened drinking water according to German drinking water regulations (free chlorine not detectable), operating on the principle of reverse osmosis. With RO 1000 controller and horizontal 4” membranes.
Stainless steel base frame with plastic front panel housing the instruments and controls. Special inlet filter with 5 μm-filter cartridge and 2 pressure gauges, high pressure pump, low-noise, multi-stage centrifugal type (incl. frequency converter for ND/ FU systems), low energy wound modules with energy saving PA/PS composite membranes in GRP pressure vessels with inliner.
[su_spacer size=”30″][su_spacer][/su_spacer]
[su_note note_color=”#f4f4f4″]ND and ND/FU Series 2 Specification[/su_note]
Description
Stainless steel base frame with plastic front panel housing the instruments and controls. Special inlet filter with 5 μm-filter cartridge and 2 pressure gauges, high pressure pump, low-noise, multi-stage centrifugal type (incl. frequency converter for ND/ FU systems), low energy wound modules with energy saving PA/PS composite membranes in GRP pressure vessels with inliner. Valves and instruments including feed water sampling valve, solenoid inlet valve, feed water pressure switch, permeate, concentrate and concentrate recirculation flow meters, vibration-resistant pressure gauges for pump and concentrate pressure, stainless steel valves for adjustment of permeate, concentrate and concentrate recirculation flow rate. Microprocessor control system, as described below, electrical switchgear for control of the high-pressure pump, lockable main switch, connecting cable (3 m) with 16 A – 6 h CEE five-pole plug.
RO 1000 microprocessor control system
For fully automated monitoring and control of the reverse osmosis unit with two-line LCD (16 characters per line) and process-visualisation of Operating data: permeate conductivity (temperature-corrected), permeate temperature, operating hours, Malfunction signals: low pressure, hard water, motor overload, high conductivity prealarm, high conductivity fault, status signals: permeate discard, permeate recycling, concentrate displacement, concentrate rinse, intermittent rinse during shut-down, shut-down by external signal (forced stop, regeneration), LEDs for operation, malfunction, regeneration, discard, disinfection and full tank. Inputs (low voltage) for level control with 1 or 2 float switches, hardness monitoring unit (the RO 1000 control system includes control functions for the limitron hardness monitoring unit), shut-downs by external signal (forced stop, regeneration), 2 universal inputs, Outputs for softening unit (230V/50Hz), 2 solenoid valves for concentrate rinse, permeate discard and recirculation, universal output, analogue output conductivity permeate (4-20 mA) and DDC (collective malfunction signal on floating changeover contact). Unit completely wired and pre-assembled and ready for installation. Electrical equipment in accordance with VDE 0100 part 600, VDE 113 part 1. The unit is 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 pre-treatment.