2025 Nelsen Corporation Catalog - Catalog - Page 192
7 RO Control Boxes, Option Packages
Reverse Osmosis
Commercial RO Optional Accessories
These optional accessory packages installed at time of assembly.
RO CONTROL BOX
The RO Control Box controls all the functions of the RO system. It also incorporates a TDS monitor as
well as feed water temperature. It also controls the timing sequences of the solenoids and low pressure
switch, which are impossible to control mechanically. In addition it gives a time delay for motor start
and controls the float switches. It also controls higher functions such as the fast flush or permeate
flush when ordered with the system. The Control Box has four different switchable programs installed.
Custom controller programming is available to each customers preference as well as custom graphics.
Not available on SIMPLX.
NRO-CONTROLLER
Control Box w/Low Pressure, Permeate, TDS & Level Controls
NRO-CONTROLLER 5&6
Control Box w/Low Pressure, Permeate, TDS & Level Controls for
5 & 6 membrane systems
CHIP CONTROL BOX
The Chip Control Box is an economical option for a RO controller available for both the SIMPLX and NRO440 systems up to 4 membranes. The smaller modular design allows for easier assembly, service and
flexibility with a clean and logical layout. It features 6 LED lights to indicate system operation of the RO
Unit. The controller removes the need for a low pressure switch to control the pump and a start delay to
prevent system cycling. A switching power supply operates on 96-264VAC, automatically adjusting to
operating voltage. Voltage at the supply terminals is the voltage for the pump and valves. The controller
allows for tank level, system flushing, pre-treatment lockout, & start-up delays.
NRO-CONT-CHIP-SIMPLX
CHIP Controller, SIMPLX, 110/220v
NRO-CONT-CHIP-FS
CHIP Controller, Floor Stand, 1-4 Mem, up to 2HP
NRO TDS MONITORING
The panel mounted PSC-60D from HM Digital offers dual display monitoring for the industrial water
treatment professional. This extended range EC/TDS “mini” monitor continuously monitors 2 lines
simultaneously, and the dual line display shows feed and product water. The unit features digital
calibration, 2 stainless steel electrodes and 120v power source (separately or through the chip
controller). Measurement Range: Temperature: 0.0 - 75.0 °C / 33.0 - 167 °F, TDS: 0 - 9999 ppm, EC:
0 - 9999 μS.
NRO-OPT-FS-TDS-1-2
TDS Monitor for 1 & 2 Membrane NRO Systems
NRO-OPT-FS-TDS-3-4-5-6
TDS Monitor for 3 thru 6 Membrane NRO Systems
NRO-OPT-SIMPLX-TDS NO CHIP TDS Monitor for SIMPLX Systems w/o Chip Cont
NRO-OPT-SIMPLX-TDS WITH CHIP TDS Monitor for SIMPLX Systems wChip Cont
NRO MEMBRANE AUTO FLUSH
Auto flush creates a turbulent water action to remove organic and inorganic contaminants from the
membrane surface. Any standing, idle water in the membrane module is automatically purged to
the drain. Virtually all system manufacturers recommend that their membranes be flushed regularly
to insure proper performance and extended membrane life. Requires NRO Controller. Not available
on SIMPLX.
NRO-OPT 2 AF
Auto Flush - Requires NRO Controller
NRO-OPT 2 AF-110
110 Volt Auto Flush - Requires NRO Controller
NRO-OPT 2 5&6 AF
Auto Flush - 5, 6 & 8 Membrane Systems
NRO MEMBRANE PERMEATE FLUSH
Uses the RO permeate water for flushing foulants from the system. Soaking the RO elements during
standby with permeate can help dissolve scale and loosen precipitates, reducing the frequency of
chemical cleaning. Can't be used with Option 2 Auto Flush. Requires NRO Controller. Not
available on SIMPLX.
NRO-OPT 3 PF
Permeate Flush - Requires NRO Controller
NRO-OPT 3 PF-110
110 Volt Permeate Flush - Requires NRO Controller
NRO-OPT 3 5&6 PF
Permeate Flush 5, 6 & 8 Membrane Systems - Requires NRO Controller
7 - 30
For more information visit – NelsenCorp.com • NelsenWaterSolutions.com • VESTAwater.com
All prices and products subject to change without notice. ©Nelsen Corporation
