150+
FWG control retrofits
Alfa Laval, Atlas
OEM trained on major makes
24/7
FWG support
Experienced
team – 15+ years

💧 fresh water generator control (fwg)

Salinity Control · Ejector Pumps · Level · Temperature · Automation

  • ✓ Automatic Salinity Control Systems – conductivity sensors, diverter valves
  • ✓ Ejector Pump Control – sea water supply, vacuum system
  • ✓ Distiller Level Control – float switches, ultrasonic sensors, PLC
  • ✓ Brine & Distillate Pump Automation
  • ✓ Temperature Control Valves – heating water regulation
  • ✓ Flow & Pressure Monitoring
  • ✓ Alarm & Shutdown Systems – high salinity, low flow, high temp
  • ✓ PLC-based FWG Controllers – Siemens, Rockwell, Mitsubishi
  • ✓ HMI / Touchscreen Interfaces
  • ✓ Remote Monitoring & Integration with IAS
  • ✓ Retrofit of Obsolete FWG Controls
  • ✓ Calibration of Salinity Sensors

Experienced with Alfa Laval, Atlas Danmark, Sasakura, Pall, Westfalia, GEA, Hamworthy – our team delivers.

🔧 fwg control components

Salinity Sensors · Controllers · Valves · Pumps

Salinity sensors & controllers

  • ✓ Alfa Laval – Salinity indicator S00, S02, S04, conductivity cells
  • ✓ Atlas Danmark – Salinity controller type 5400, 5500, sensors
  • ✓ Sasakura – Salinity meters & controllers
  • ✓ Yokogawa – SC series conductivity meters
  • ✓ Honeywell – Durafet, DL400 conductivity sensors
  • ✓ Endress+Hauser – Condumax, Liquiline CM44
  • ✓ JUMO – CTI-750, AQUIS touch S
  • ✓ Mettler Toledo – InPro 7250, 7100 series

Flow, level & temperature control

  • ✓ Flow switches – IFM, KOBOLD, GEMS, Dwyer
  • ✓ Level switches – Magnetrol, KROHNE, VEGA, WIKA
  • ✓ Ultrasonic level sensors – Siemens SITRANS, Endress+Hauser
  • ✓ Temperature controllers – Siemens, ABB, Yokogawa, Omron
  • ✓ Control valves – Samson, Burkert, Danfoss, Spirax Sarco
  • ✓ Pressure transmitters – Rosemount, Yokogawa, WIKA
  • ✓ Ejector pump starters & VFDs – ABB, Siemens, Danfoss

⚙️ fwg control panels & plc

Siemens · Rockwell · Mitsubishi · OEM Panels

OEM FWG control panels

  • ✓ Alfa Laval – AQUA MPC (Micro Processor Control), EPC 60/80
  • ✓ Atlas Danmark – AFGU control panel, type 5500 series
  • ✓ Sasakura – Microx control panel, Vapor compression controls
  • ✓ Wärtsilä Hamworthy – Aquarius control system
  • ✓ Pall – RA-MBT control panel
  • ✓ Westfalia – OSMOTROL, OSMOCONTROL
  • ✓ GEA – Westfalia separator controls integrated

PLC-based retrofits

  • ✓ Siemens S7-1200/1500 – with HMI KTP series
  • ✓ Rockwell CompactLogix / MicroLogix – PanelView Plus
  • ✓ Mitsubishi FX / iQ-F series – GOT HMI
  • ✓ Omron CP / NJ series – NB HMI
  • ✓ Delta DVP / AS series – DOP HMI
  • ✓ Custom PLC programming – for all FWG makes
  • ✓ Remote I/O & Profibus/Modbus integration

💨 vacuum system & ejector control

Ejector Pumps · Vacuum Breakers · Priming

Ejector pump control

  • ✓ Sea water ejector pump starters – DOL, star-delta, VFD
  • ✓ Pressure switch control for ejector
  • ✓ Flow switch monitoring for ejector line
  • ✓ Automatic priming systems
  • ✓ Ejector pump alternation (duty/standby)
  • ✓ Vacuum breaker valve control
  • ✓ Ejector pump protection – dry run, overload

Vacuum monitoring & control

  • ✓ Vacuum pressure switches – Danfoss, SMC, Festo
  • ✓ Vacuum transmitters – 4-20 mA output
  • ✓ Vacuum controller with setpoints
  • ✓ Vacuum breaker solenoid valves
  • ✓ Ejector air bleed valves
  • ✓ Leak detection in vacuum system
  • ✓ Integration with PLC for vacuum control

💧 distillate & brine pump control

Level Control · Transfer Pumps · Alarm Management

Distillate pump control

  • ✓ Automatic start/stop based on distillate tank level
  • ✓ High level alarm & pump shutdown
  • ✓ Low level alarm & pump protection
  • ✓ Conductivity-based divert to bilge/overboard
  • ✓ Flow meter integration for water production
  • ✓ Distillate pump VFD control for constant pressure

Brine ejector & overboard

  • ✓ Brine ejector pump control
  • ✓ Overboard divert valve automation
  • ✓ High salinity alarm & auto divert
  • ✓ Brine line pressure monitoring
  • ✓ Ejector efficiency monitoring
  • ✓ Environmental compliance (overboard prohibition)

⚠️ fwg alarm & safety systems

High Salinity · Low Vacuum · High Temp · Pump Failure

  • ✓ High salinity alarm – adjustable setpoint, automatic divert, shutdown
  • ✓ Low vacuum alarm – indicates ejector problem or air leak
  • ✓ High distillate temperature alarm – cooling water failure
  • ✓ Low seawater flow alarm – ejector pump failure or strainer blockage
  • ✓ High brine pressure alarm – ejector line blockage
  • ✓ Pump motor overload / thermal trip
  • ✓ Level switch failure alarm – distillate tank high/high
  • ✓ Conductivity sensor fault / calibration required
  • ✓ Heating water temperature control failure
  • ✓ Emergency stop & remote shutdown
  • ✓ Integration with engine room alarm panel (AMS)
  • ✓ Historical alarm logging & trending

🔧 fwg retrofit & troubleshooting

Modernization · Legacy Controls · Diagnostics

  • ✓ Legacy FWG control modernization – replacing obsolete relay logic with PLC
  • ✓ Salinity controller replacement – old Alfa Laval, Atlas to digital controllers
  • ✓ Conductivity sensor upgrade – to inductive / 4-electrode technology
  • ✓ HMI upgrade – old push buttons to touchscreen with graphics
  • ✓ VFD installation for ejector pumps – energy savings, soft start
  • ✓ Remote monitoring & IAS integration – Modbus, Profibus, Ethernet/IP
  • ✓ FWG troubleshooting – on-site diagnostics, sensor validation, logic checking
  • ✓ Salinity sensor calibration – certified calibration solutions
  • ✓ Control valve repair & replacement – pneumatic, electric actuators
  • ✓ Spare parts supply – for all major FWG makes
  • ✓ Pump starter panel upgrade – to intelligent motor controllers
  • ✓ Class survey support – FWG control system compliance

🌍 fwg service coverage

Vessels We Serve with FWG Control Expertise

Vessel Types

  • ✓ Tankers (VLCC, Aframax, Product)
  • ✓ Bulk Carriers (Capesize, Panamax)
  • ✓ Container Vessels (Post-Panamax)
  • ✓ LNG / LPG Carriers
  • ✓ Offshore Vessels (PSV, AHTS, OSCV)
  • ✓ Drilling Rigs (Jack-up, Semi-sub)
  • ✓ FPSO / FLNG / FSRU
  • ✓ Ro-Ro / PCTC / Car Carriers
  • ✓ Cruise Ships / Ferries
  • ✓ Naval Vessels
  • ✓ Mega Yachts
  • ✓ Passenger Vessels

Global Service Locations

  • ✓ UAE – Dubai, Abu Dhabi, Fujairah
  • ✓ India – Mumbai, Kochi, Chennai, Kandla
  • ✓ Singapore – Jurong, Tuas
  • ✓ Middle East – Qatar, Saudi, Kuwait
  • ✓ Europe – Rotterdam, Hamburg, Piraeus
  • ✓ Asia – South Korea, China, Japan
  • ✓ Africa – Nigeria, South Africa, Egypt
  • ✓ Americas – Houston, Rio, Panama
  • ✓ Worldwide – all major ports and shipyards

💧 24/7 fresh water generator control support

Need Fresh Water Generator Control
service, retrofit, or troubleshooting?

Our FWG control engineers provide complete installation, troubleshooting, retrofit, and repair services for all fresh water generator control systems – salinity control, PLC panels, sensors, pumps, and alarms. Available 24/7 worldwide.

Email: service@seanav.org | Website: www.seanav.org