FCI Watermakers
Controller Technology
  • Overview
  • Features
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FCI V4 Controller Technology Continues to Lead The Market
with Complete Automation and Bridge Certifications.

FCI pioneered remote operation for watermakers over two decades ago with the industry’s most advanced Universal
Reverse Osmosis Controller. Today, we continue this legacy with our 4th generation controller and interface,
which allows complete automation and customization of your watermaker through intuitive advanced touch
screen controls. V4 continues to be the smartest solution, pushing the envelop in watermaker control and system
integration. We manufacture and program our systems in-house to your specifications, ensuring your watermaking
needs are met, and often exceeded.

The V4 interface is accomplished via 7" or 4.3" marine-grade, high resolution, and full-color HMI (Human Machine
Interface) touch screen. Our monitors’ higher heat tolerance and system design allows it to work in the harshest
environments. FCI touch screen displays can be installed with confidence, because they will not interfere with other
on-board electronics. Our monitors are Bridge Classified for marine use with Type Approval Certifications from:
ABS, GL, Lloyd’s Register EMEA, Det Norske Veritas, and Russian Maritime Register of Shipping.

Watersmart Intelligence Does The Work For You

The industry’s most advanced control system is at your fingertips. The intuitive interface includes one-touch
Startup and Fresh Water Flushes with easy access to system customization and automated features. There’s
even an on-screen help menu. V4 enables you to instantly install, run and modify your system to meet your
watermaking needs with complete automation.
HOME screen HOME screen:
Simple one-touch operation. Start or Stop the system,
or perform a Fresh Water Flush.
SETUP screen SETUP screen:
FCI V4 controls let you be in command. Whether it’s adjusting run
time, gallons produced or simply setting up the standard Fresh
Water Flush time, the V4 control is very intuitive and easy to use.
RUN screen RUN screen:
Monitor system data, including PSI, flow rates and system
temperature. View your system’s status any time.
OVERVIEW screen OVERVIEW screen:
Provides a snapshot of your system’s performance and stage
of operation, including production rates and operational PSI.
APC Control APC Control:
With our APC (Automated Pressure Control) your system becomes
fully automated. Run off of tank level controls, time of day, or simply
touch the start icon and walk away.
APC Control When Backwashing, the system with APC will stop the watermaker,
automatically position all valves, proceed to backwash and reposition
the valves when complete. The watermaker will automatically restart,
and be brought back on line.
AQ3 Controller AQ3 Controller
The Aqualite and Aquamiser+ Series controls are packed with the
essential features you are accustomed to with FCI Watermakers.
One-touch operation and customization procedures enable you to
run and modify your system to meet your minute-by-minute needs.
  • V4
  • AQ3
  • Multiple languages
  • Pump Sequence time setting for load management and prime time installation variations.
  • Pretreatment lock out for media filter backwashing or other pretreatment device. Refer to the built-in flush diagram for valve settings, or with APC (Automated Pressure Control), simply press backwash.
  • Adjustable produced water diversion setting. Set the PPM divert level to the water quality of choice.
  • Track the amount of water made at each run time, or the total amount made for the life of the system.
  • Track service intervals for cartridge changes, oil changes, fresh water flush changes either graphically via the built-in service screen or the pop-up notification screens.
  • Program the automatic Fresh Water Flush to engage when you want– daily, weekly or monthly. Set the duration of the flush to coincide with your available fresh water pressure to ensure a through flush.
  • Install a 7” or 4.3” remote station to the existing terminal on the V4.
  • Unique IP address for remote access.
  • Connect the V4 to your NMEA 2000 compatible system (with optional module).
  • Adjust HMI light level for night running.
  • Adjust flow units and pressure to English or Metric.
  • Set up your V4 control to operate automatically with tank level float switches.
  • Monitor high- and low-pressure readings at the system or with the available remote.
  • Built-in or on-screen diagnostics and alarm faults history.
  • Built-in tracking of operational history.
  • Protection against over production.
  • Protection against low flow or low feed pressure condition.
  • Pre-filter and Fresh Water. Flush filter life tracking.
  • Oil change life tracking.
  • On-screen fault condition resolution troubleshooting advice.
  • Worry-free customizable settings. Operational settings can be changed and saved. If you make a mistake, the control can easily be reset to factory defaults.
  • Multi-level security ensures protection against unauthorized system changes. No alterations can be made without the authorization code.
7" and 4.3" Remote Displays 7" and 4.3" Remote Displays
Remote displays are Bridge Certified and
guaranteed to not interfere with other
on-board electronics.
Learn more about The FCI Advantage, and why FCI Watermakers should be the clear fresh water choice.
  • Staged starting of motors
  • Timed start-up (Prime, Init, Run)
  • TDS monitoring of product water
  • Automatic diverting of water above 500 PPM
  • Programmable Fresh Water Flush for automatic and weekly operation; or, convenient one-touch button for manual operation
  • Overpressure protection (HP fault) Loss of Prime/Fouled Filter detection (LP fault)
  • Remote system control up to 150'
  • Readout of product TDS
  • Automatic tank level controls
  • Programmable time/set points and display settings


Digital Remote Displays
Digital Remote Displays

Additional displays enable you
to program and access the system
from a remote location.
Learn more about The FCI Advantage, and why FCI Watermakers should be the clear fresh water choice.
FCI Watermakers are designed to be tolerant of changing water conditions, unlike competing systems where optimal water conditions are essential to achieving stated output. Your vessel travels around the world encountering waters that vary in both salinity and particulate, which may cause other systems to become inoperable or less productive. We have provided the following performance specifications under typical sea water conditions, and guarantee operation in most ocean environments.

25ºC / 77ºF, 32,500 PPM TDS, 820psi @ 60Hz


model per day (gal / L) per hour m3 feed flow rate (GPM)
NM12263S 1200 / 4541 50 / 189 4.50 5
NM18263S 1800 / 6811 75 / 284 6.80 5
NM24263S 2400 / 9081 100 / 378 9.00 8
NM31263S 3100 / 11730 129 / 489 11.70 12
NM43263S 4300 / 16271 179 / 678 16.20 12
NM55263S 5500 / 20812 229 / 867 20.80 12

model hp kw VAC phase Hz
NM12263S 3.0 3.05 220 / 380 3 50 / 60
NM18263S 3.0 3.05 220 / 380 3 50 / 60
NM24263S 5.0 4.58 220 / 380 3 50 / 60
NM31263S 7.5 6.48 220 / 380 3 50 / 60
NM43263S 7.5 6.48 220 / 380 3 50 / 60
NM55263S 7.5 6.48 220 / 380 3 50 / 60

model lbs / kg
NM12263S 300 / 136
NM18263S 315 / 143
NM24263S 340 / 154
NM31263S 370 / 168
NM43263S 390 / 177
NM55263S 410 / 186

Please contact us for parts details, schematics,
user manuals and installation materials.
Neptune Horizontal Information Sheet       750K
Neptune Wall-Mount Information Sheet       750K
Neptune Modular Information Sheet       750K
Neptune Series Brochure       1.5MB
FCI Watermakers Full Product Brochure       3.5MB

Please contact us for parts details, schematics,
user manuals and installation materials.
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