Main benefits
  • Operates as a standalone monitoring unit
  • Connects to a CA 511 graphical display to provide a full user interface for viewing and setting all parameters
  • Minimizes operating costs and increases pumping station availability
  • Connects to any Supervisory Control and Data Acquisition (SCADA) or telemetry system supporting the Modbus or Comli communication protocols
Main applications
  • Monitoring and controlling municipal wastewater pumping stations
  • Viewing alarms, manually controlling pumps, and changing settings, either locally via the graphical user interface or using the AquaProg software
  • AquaProg software can be used for backing up the controller settings on the hard disk and also for downloading alarms, events and historical data
Advanced features

Users can operate the PC 441 as a standalone monitoring unit. Alternatively they can run the AquaProg configuration software on a PC connected directly to the local service port or remotely, such as via modem. Settings are password-protected at two levels in order to avoid unauthorized or accidental changes.

Five additional units can be connected for more advanced monitoring:

  • CA 441: Moisture monitoring unit for connecting four pumps with combined alarms or three separate alarms using one unit per pump
  • CA 442: Temperature monitoring unit for connecting four pumps with combined alarms or four separate alarms using one unit per pump and a separate mA input for a vibration sensor
  • CA 443: Electrical supply and consumption monitoring, as well as measuring device for a complete station and/or one per pump
  • CA 622: Communication unit for sending and receiving information to peripheral products via RS 485 Modbus interface
  • CA 781: Expansion unit for connecting an extended number of pumps


The PC 441 offers two possibilities for level sensing:

  • Connection of hydrostatic or other devices with 4 to 20 mA signal
  • Float switches
Main design features
  • Pump start/stop based on:
    Level set point, random start level, speed of level change, tariff control, alternative stop level, remote communication, pump stop after max. runtime setting, cyclic pump motion timer
  • Pump alternation: normal or asymmetrical
  • Pump run confirmation via motor current or contactor feedback
  • Emergency pump run timer on high float
  • Overflowcalculation and monitoring
  • Pulse frequency to analog, value conversion (energy/rain/flow inputs)
  • Alarm dial-up
  • GSM/SMS alarms
  • GPRS modem support
  • Modbus and Comli communication protocols
  • Analog data logger: 16 channels, 1–60 minutes/sample.
    Values measured: Level, motor current on P1/P4, inflow/outflow, pressure, motor, bearing
  • Temperature (Pt 100) on P1/P4, calculated energy/rain/flow
  • Digital Data logger: P1/P4 on/off, alarms on/off/acknowledged
  • Real Time (RT) clock for date and time, with 6 h internal backup
  • Inflow calculation
  • Outflow calculation
  • Pump capacity calculation and alarm
  • Personnel alarm
  • Auto pump reversal
  • Pump exercising (forced start)
  • Auto reset motor protector
Key characteristics
  • Advanced monitoring of one to four pumps
  • Advanced control of one to four pumps
  • Communication via GPRS, GSM, telemodem or cable
  • Logging of analog signals, digital signals and alarms
  • Level sensing by 4-20 mA sensor of float switches
  • Mixer and flush valve control
  • Advanced pump capacity and outflow calculation with alarm handling
  • Overflow measurement
  • DIN rail mounted
Case studies
  • Revolutionizing pumping station control
    Sulzer-led award-winning project improves performance and control of sewage pumping stations.

  • Smarter control of wastewater pump networks transforms performance, reliability and cost-efficiency
    Data flows faster than water, providing a stream of optimization opportunities. The latest in control technology allows pumping stations and wastewater treatment facilities to talk to each other, providing a better picture of real-time conditions and enabling smarter, more proactive management of the whole network.

  • Case studies
    Wherever fluids are pumped, mixed, controlled or applied, we are there. See how our solutions create value for customers and learn how we can make your pumping and mixing processes more efficient and profitable, safeguarding your production and ensuring lasting reliability.

Data sheets

Installation manuals

  • Commercial waste disposal from toilets
    Commercial wastewater from toilets comprises all sewage water flushed from toilets on commercial, industrial or public properties.

  • Commercial wastewater without toilet waste
    Commercial wastewater without toilet waste includes drainage and grey wastewater.

  • Flood control
    Climate change is challenging natural disaster prevention. When water runs off the land in large quantities, Sulzer’s comprehensive range of pumps provide reliable, cost effective and efficient solutions for flood control.

  • Inlet pumping station
    Inlet pumping stations are somewhat similar to large terminal pumping stations. Depending on the depth of the incoming sewer, the lifting heads can range from around 2 up to 30 meters. To prevent hydraulic shock loads, which negatively impact the biological process, the stations often make use of variable-speed drives and/or several pumps in parallel.

  • Network pumping station
    Network pumping stations collect municipal wastewater from residential homes and communal schemes. Installed in dry or wet wells, the pumps deliver the effluent to a terminal pumping station. Since most pumping stations are not equipped with screens, the pumps must cope with difficult materials such as fibrous sanitary and packaging items.

  • Outlet pumping stations
    Outlet pumping stations are required when the level of the treatment plant is lower than that of the receiving water. This is especially true when discharging into a river, which can rise during heavy rain or flood periods, or into the sea, where the level varies with the tide. Outlet pumping stations may also be needed to compensate for increasing frictional losses in the outgoing pipe at high flows, for example in long sea outfall pipes.

  • Storm water pumping station
    During heavy rainfall, storm water pumping stations deliver large volumes of water at low head to receiving surface waters or sewers. Having long been a part of flood management, they are increasingly involved in climate adaptation strategies for low-lying coastal cities.

  • Storm water retention tank
    Storm water retention tanks act as a buffer during periods of heavy rainfall. This is increasingly important as areas become more developed, with hard surfaces such as roofs, roads and parking lots that cannot absorb the rainwater. When storm water retention tanks are implemented, gravity or pumps can be utilized to provide a reduced continuous flow into the sewer system. Sulzer expertise makes it possible to avoid peak hydraulic loads and to limit the stresses on existing sewer systems.

  • Terminal pumping station
    Terminal pumping stations receive municipal wastewater from network pumping stations. Installed in dry or wet wells, the pumps forward the medium to a treatment plant for final purification. Due to the lack of screens at most pumping stations, difficult materials such as fibrous sanitary and packaging items are a constant threat to uptime.
Related products
  • Graphical operator interface type ABS CA 511
    The CA 511 is an operator panel for advanced monitoring of pumping stations. It can only be used in combination with the PC 441 monitoring/controller unit. The CAN-bus manages communications and supplies power. The TFT 480x272 pixel display includes 28 keys to simplify operations and ensure user-friendly operation.

  • Moisture monitoring module type ABS CA 441
    The CA 441 performs leakage monitoring on submersible pumps. With four signal inputs, it monitors up to four individual pumps or one pump with separate alarms. The unit can be mounted either in the cabinet or up to 250 meters away from the pump (when using the same earth potential). CA 441 can only be used in combination with the PC 441 monitoring/controller unit.

  • Temperature monitoring module type ABS CA 442
    The CA 442 is a temperature monitoring unit with four signal inputs. It can monitor one to four pumps with combined alarms (one alarm per pump) or up to four separate alarms using one unit per pump. The CA 442 can be connected to the PC 441 via a CAN-bus interface and can only be used in combination with the PC 441 monitoring/controller unit.

  • Motor and supply power monitoring module type ABS CA 443
    The CA 443 is an electrical property measuring device used either for a complete station or for a single pump. It can be connected to the PC 441 via a galvanic-isolated CAN-bus interface and can only be used in combination with the PC 441 monitoring/controller unit.

  • RS 485 communication module type ABS CA 622
    Communication module type ABS CA 622 allows you to send and receive information to your peripheral products via your existing pump controller PC 441 using a RS 485 Modbus interface.

  • Output expansion module type ABS CA 781
    With output expansion module CA 781 you can control an extended number of pumps with your existing PC 441 system.

  • Submersible pumps
    Sulzer offers one of the most comprehensive ranges of submersible pumps available on the market today. The applications extend from pumping of light and medium duty within residential and commercial properties to pumping of heavy duty with high concentration of rags and solids in municipal wastewater collection networks and in industrial wastewater applications.

  • Submersible mixers
    Sulzer's energy efficient submersible mixers are suitable for a wide range of applications in industry and municipal treatment plants. They provide the right solution to match mixing tasks for agitating, blending, mixing, dissolving and suspension of solids in industry and municipal treatment plants.
The Sulzer pump control system offers a proactive solution for the network of pumping stations

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