320+
Purifier control retrofits
Alfa Laval, GEA
OEM trained on major makes
24/7
purifier support
Experienced
team – 15+ years

🔄 purifier control systems (pcs)

Auto-discharge · Sludge Monitoring · Temperature Control · Feed Pump

  • Automatic Discharge ControlAlfa Laval EPC, Westfalia VESA
  • ✓ Sludge Monitoring & Discharge – optical sensors, timers, PLC
  • ✓ Temperature Control – heater control, PID, 4-20mA output
  • ✓ Feed Pump Control – variable frequency drives, soft starters
  • ✓ Bowl Speed Monitoring – proximity sensors, speed switches
  • ✓ Vibration Monitoring – for bearing protection
  • ✓ Water / Oil Interface Control – for clarifiers, separators
  • ✓ Pressure & Flow Monitoring – inlet/outlet
  • ✓ Remote Start/Stop – from ECR or bridge
  • ✓ Integration with IAS/AMS – Modbus, Profibus, Ethernet
  • ✓ Alarm & Trip Annunciation – high sludge, high vibration, high temp
  • ✓ Retrofit of Obsolete Purifier Controls

Experienced with Alfa Laval, GEA Westfalia, Mitsubishi, Mitsui, Zanotti – our team delivers.

🎛️ purifier control units

Alfa Laval · GEA · Mitsubishi · Mitsui · Zanotti

Control unit makes & models

  • Alfa Laval – EPC 40, EPC 50, EPC 60, EPC 70, Paniers, SOU, PCS
  • GEA Westfalia – VESA 1, VESA 2, VESA-E, MSC, FPC 01, FPC 02
  • Mitsubishi – SJ Series control panels (SJ10T, SJ20T, SJ30T)
  • Mitsui – ZHS, ZK series purifier controls
  • Zanotti – ECS series (EcoControl System)
  • RWO – OSD control panels
  • Foster Wheeler – legacy purifier controls
  • PLC-based retrofits – Siemens, Allen Bradley, Mitsubishi

Control functions & features

  • ✓ Automatic sludge discharge – time / volume controlled
  • ✓ Bowl opening/closing monitoring
  • ✓ Temperature controller – PID, auto-tuning
  • ✓ Heater control – solid state relay, contactor
  • ✓ Feed pump VFD control – pressure constant
  • ✓ Vibration switch / sensor input
  • ✓ Remote I/O – Profibus, Modbus, DeviceNet
  • ✓ Touchscreen HMI – for operation and trending

⚙️ purifier models

Alfa Laval · GEA · Mitsubishi · Mitsui · Zanotti

  • Alfa Laval – MAB 103, MAB 104, MAB 206, MAPX 203, MAPX 204, MAPX 205, MAPX 207, PX 90, PX 95, PX 97, PX 99, WHPX, S 926, S 936
  • GEA Westfalia – OSA 7, OSA 20, OSA 35, OSA 44, OSA 45, OSA 47, OSA 49, OSD 2, OSD 6, OSD 8, OSD 10, OSD 15, OSE 3, OSE 5, OSE 10, OSE 20, OSE 30, OSE 40, OSE 60, OSE 80, RSE 60, RSE 80, RSE 100, RSE 150
  • Mitsubishi – SJ10, SJ20, SJ30, SJ40, SJ50, SJ60, SJ70, SJ80, SJ100, SJ110, SJ120, SJ130, SJ150, SJ200, SJ300, SJ400, SJ500, SJ600, SJ700, SJ800, SJ900, SJ1000
  • Mitsui – ZHS 30, ZHS 40, ZHS 50, ZHS 60, ZHS 70, ZHS 80, ZK 20, ZK 30, ZK 40
  • Zanotti – ECS 10, ECS 20, ECS 30, ECS 40, ECS 50, ECS 60, ECS 70, ECS 80, ECS 90, ECS 100
  • RWO – OSD 2, OSD 3, OSD 4, OSD 5, OSD 6, OSD 7, OSD 8
  • Foster Wheeler – legacy models (retrofit specialist)
  • Alfa Laval & Westfalia spare parts support – control cards, sensors, displays

🧹 auto-discharge & sludge monitoring

Sludge Detection · Discharge Control · Bowl Cleaning

Sludge monitoring methods

  • ✓ Optical sludge detection – Alfa Laval (EPC), Westfalia (VESA)
  • ✓ Time-based discharge – programmable interval
  • ✓ Volume-based discharge – flow meter integrated
  • ✓ Sludge tank level monitoring – ultrasonic, pressure
  • ✓ Bowl cleaning cycle optimization
  • ✓ Sludge discharge valve control – solenoid, pneumatic
  • ✓ Discharge counter and monitoring

Auto-discharge control components

  • ✓ Discharge timer modules – replacement for legacy
  • ✓ Solenoid valves – for operating water
  • ✓ Proximity sensors – bowl speed / position
  • ✓ Sludge detector calibration – optical alignment
  • ✓ Discharge sequence PLC programming
  • ✓ HMI with discharge history and trending
  • ✓ Remote discharge inhibit / override

🌡️ temperature control & heater management

PID Control · Heater Elements · Sensors

Temperature control makes

  • Alfa Laval – EPC integrated PID, Paniers controllers
  • GEA Westfalia – VESA temperature control module
  • Mitsubishi – built-in heater control
  • Omron – E5CN, E5CC digital controllers (retrofit)
  • Siemens – S7-1200 with PID block
  • Yokogawa – UT series temperature controllers
  • Honeywell – UDC series

Heater & sensor components

  • ✓ Heater elements – immersion heaters, flanged
  • ✓ SSR (Solid State Relay) – for precise control
  • ✓ Temperature sensors – PT100, thermocouple
  • ✓ Temperature transmitters – 4-20mA output
  • ✓ Heater contactors and overloads
  • ✓ Heater failure detection – current monitoring
  • ✓ Heater cleaning / descaling service

⚙️ feed pump control & vfd

Constant Pressure · Flow Control · Soft Starter

Feed pump control methods

  • ✓ Direct-on-line (DOL) starting
  • ✓ Star-delta starting
  • ✓ Soft starter – Danfoss, Siemens, ABB
  • ✓ Variable Frequency Drive (VFD) – constant pressure
  • ✓ Flow control – based on purifier load
  • ✓ Pressure transmitter feedback
  • ✓ Pump run hours monitoring

VFD / soft starter makes

  • Danfoss – VLT series, FC 102, FC 202
  • Siemens – Sinamics G120, V20
  • ABB – ACS 355, ACS 580, PSE soft starters
  • Schneider – Altivar 320, 630
  • Mitsubishi – FR-D700, FR-A800
  • Allen Bradley – PowerFlex 525, SMC soft starters
  • Fuji – Frenic series

🔧 pcs retrofit & troubleshooting

Modernization · Legacy Controls · Diagnostics

  • Legacy purifier control replacement – Alfa Laval EPC 40/50 to EPC 60/70, Westfalia VESA to VESA-E
  • PLC-based purifier control – Siemens, Allen Bradley, Mitsubishi, Omron
  • HMI upgrade – touchscreen, multi-language, trending
  • Temperature controller retrofit – analog to digital PID
  • Sludge detector upgrade – optical to modern sensor
  • Vibration monitoring addition – for bearing protection
  • Feed pump VFD retrofit – energy saving, soft start
  • Network integration – Modbus, Profibus, Ethernet/IP to IAS/AMS
  • Spare parts supply – control cards, sensors, displays, relays
  • On-site troubleshooting – fault diagnosis, software update
  • Emergency service – 24/7 worldwide
  • Class survey support – documentation, testing

🌍 pcs service coverage

Vessels We Serve with Purifier 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

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
  • ✓ Worldwide – all major ports and shipyards

🔄 24/7 purifier control support

Need Purifier Control System
service or retrofit?

Our purifier control engineers provide complete installation, troubleshooting, retrofit, and repair services for all purifier control systems – Alfa Laval, GEA Westfalia, Mitsubishi, Mitsui, Zanotti, auto-discharge, temperature control, feed pump VFD. Available 24/7 worldwide.

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