Water Conditioning & Purification Magazine

Variable-frequency drives


Variable-frequency drives SJE-Rhombus® introduces the SubCon(TM) variable-frequency drive, an energy efficient, state-of-the-art solution for residential water well pump control. Set pressure and other parameters are easily adjusted via the keypad. Easy-to-read alphanumeric displays feature current psi, target pressure setting, pump speed (Hz), pump amps, pump run time and error codes. Advanced protection features include adjustable electronic motor overload protection, over temperature, high- and low-discharge pressure alarms and pressure transducer fault. Available for 1.5 and 3.0 HP 230V applications and supplied in a NEMA 1 enclosure with a 4-20 mA (0-145 psi) pressure transducer. UL/cUL listed.www.sjerhombus.comsje@sjerhombus.com

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