Is the Deragger II a mechanical attachment for the pump?
No, it’s an electronic device that clips in the control panel of the pump.
How does the Deragger II protect the pump?
The Deragger II has full IEC 60947 thermal pump protection. It also has over/under current, over/under voltage, current imbalance, phase failure and frequency out of range.
What is the biggest pump the Deragger II can be fitted to?
With the standard power modules, it can go up to 800A. However, we can provide custom power modules on request to go much higher than this.
Is it one Deragger II per Pumping Station?
You require one Deragger II per pump.
Does it matter if the pumps are dry well or wet well submersibles?
The Deragger II is equally effective on both dry and wet well applications.
How is the Deragger II different from other anti-ragging devices?
The Deragger II is the only device that monitors the torque or the pump in real time to detect the smallest of rags building up on the impeller. It can detect when one or two wipes sticks to the inside of the pump, if required.
Do I need a new pump starter?
For your convenience, the Deragger II is designed to plug and play with the existing starter.
Does your device just monitor?
No, the Deragger II also prevents blockages. On detection of a partial blockage the pump will be stopped, reversed for a few seconds and then will run forward again.
What happens if the Deragger II can’t remove the blockage?
It will try to perform another clean. If it attempts too many consecutive cleans it will trip out. This number is set in the configuration software.
What starter types does the Deragger II work with?
The Deragger II works on all starter types. The one unit covers all pumps up to 800A.
How does the Deragger II integrate with the controls in the electrical panel?
The Deragger II uses the start signal to the existing starter to start itself. It has forward and reverse outputs that then control the starter in the appropriate direction. The Deragger II utilises a volt free Normally Open and Normally Closed contact to replace the fault contact on the existing motor protection.
How does the Deragger II save energy?
The Deragger II can save up to a proven 48% by running a clean impeller clean all the times. Not only does running a clean impeller reduce the instantaneous power, it will increase the pump flow rate, meaning run times are significantly reduced.
Can I incorporate the Deragger II into my SCADA?
Yes, the Deragger II support Modbus RTU RS485 and Profibus DP to allow control and signals from the Deragger II to be present on the SCADA system.
What other functions does the Deragger II perform?
The Deragger II has full 3 phase power monitoring built in. This can be logged via our Deragger II Datalogger or presented to SCADA.
FAQ December 18th, 2014Clearwater Controls