Deragger II

DII resizedThe multi-award-winning Deragger II from Clearwater Controls is the ideal solution for pump blockages and high energy costs – two of the biggest problems faced by the wastewater industry today.


  • Eliminates rags/clogs in wastewater pumps
  • Wealth of diagnostic information and pump data
  • Typical payback in months
  • Reduces operational callout costs
  • Improves electrical efficiency by up to 48%
  • Reduces pollution incidents
  • Minimal interruption to ‘live’ sites
  • No new kiosks, replacement panels or construction works
  • Simple plug and play to any starter type


The key feature of the Deragger II low-voltage, electronic pump management system is real-time pump monitoring.

This enables the patented technology in the Deragger II to identify and eliminate potential pump blockages, monitor the long-term condition of the pumps and reduce wear and tear caused by unbalanced loads.

By maintaining a clean impeller at all times, the Deragger II ends the time-consuming and costly necessity of manually lifting pumps, thus eliminating downtime and other costs associated with pump blockages.

The reduction of environmental incidents, together with less electricity consumption, results in a lowered environmental impact and carbon footprint.

Deragger II Brochure

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Pump Protection
Additional Apps

Not only does the Deragger II automatically prevent blockages in real-time, it provides full pump diagnostic information. The wealth of pump performance data includes individual phase voltage, current and power to Kw/Hrs, run time and a number of start counters.

The device also logs daily average current and power consumption, plus average run cycle time. Three hundred and sixty-five days of data can be easily downloaded and analysed to show pump performance over a year, enabling the asset owner to determine maintenance or replacement schedules for the pumps.

Measuring just 35mm in width, the din rail mounted Deragger II is designed to easily and quickly retrofit into existing control panels, making it the perfect solution for even the smallest pumping stations. It connects easily through plug and play, with In-line (DOL), Delta-wye (Star/Delta), Soft Start or VSD.

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