Jan 17, 2019 | DERAGGER
Clearing detrimental materials such as rag balls before they cause harm in a system increases the efficiency of pumps, which reduces energy consumption and cuts operational costs.
The installed pump monitoring system is designed to prevent ragging with early detection. (Image courtesy of Deragger Inc.)
One way to remove materials before they cause harm is a technology that uses a power analyzer to deliver real-time pump protection. Measuring the pump’s raw power signature and understanding the torque profile of the pump are offerings included in new technologies. One such device monitors and detects initial rags catching the impeller. At this point, the technology slows and reverses the pump to dislodge the rags, passing them through, rather than allowing them to weave into a full obstruction over time. Software with complex algorithms is designed to understand the pump behavior, and detect and control the pump. This means each reversal, or “clean cycle,” is started before the buildup of damaging rag balls.
The device does not reverse the pump in an arbitrary fashion and it does not wait for a high current setpoint to be reached. Both arbitrary reverses and delayed response can be problematic in the long term.
What Are the Alternatives? What Systems Need This Kind of Technology?
Finish reading here: Overcome Pump Ragging to Improve Efficiency
Aug 20, 2018 | DERAGGER, Municipal Product
Among the problems created by the proliferation of wipes is the unpleasant, time-consuming and costly job of periodically pulling rags from pumps.
Many clean-water plants have tackled the problem by installing choppers or grinders that macerate the wipes into particles that pumps can easily pass. Now United Kingdom-based Clearwater Controls (doing business as DERAGGER in the U.S.) offers a technology that instead uses intelligent pump control to allow wipes to pass without cutting.
The DERAGGER+ anti-ragging device monitors the pump’s power signature and detects when a wipe is interfering with the pump’s operation. At that point, it runs the pump through a reverse cycle that releases the wipe, which then passes through when normal operation is restored.
Read full article from TPO Treatment Plant Operator: Here’s a Way to Deal With Rags and Wipes Without Grinding or Chopping
May 22, 2018 | DERAGGER
The DERAGGER+ constantly monitors the torque signature of a pump’s motor, and can dislodge and pass rags in Real Time should they become stuck on or inside the impeller/volute.This is achieved with a tuneable “clean cycle” involving a brief and unique series of forward and reverse motions of the impeller. By maintaining a clean impeller at all times, the DERAGGER+ ends the time-consuming and costly necessity of manually lifting pumps, thus eliminating downtime and other costs associated with pump ragging. 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.
COOL FACT
The DERAGGER can easily protect a pump from running dry should the float or level sensor fail.
