Data Sheet Liquitron™ DC4500 Series Conductivity Controller Cooling Tower Controller Bleed & Feed with Dual Biocide Additions The Liquitron DC4500 Series Conductivity Controller is a microprocessor based control system that will operate in a variety of water treatment applications. The DC4500 provides a set point and relay for conductivity control, and a variety of timer functions to control chemical addition, including dual biocides. Pumps may be controlled in either ON/OFF or External Trigger mode. Programming this controller is simple and is accomplished using only three keys. The backlit LCD display and LEDs provide a visual indication of operating conditions and equipment status. Features • • • • • • • 0-20,000 µS Control Range Display units in µS or in PPM/TDS Temperature Display in °C or °F High and Low Alarm with Output Relay Water Meter Totalizer (Gallons) 4-20 mA Recorder Output (Standard) Flow Switch Compatible (N.O. or N.C.) • Backlit LCD Alpha / Numeric Display • Timer or Conductivity Based Prebleed • Bleed Output Relay • Inhibitor Chemical Pump Output (ON / OFF or External Trigger) • Dual Biocide Pump Output (ON / OFF or External Trigger) • UL, CUL, CE - Certified 8 Post Office Square Acton, MA 01720 USA TEL: (978) 263-9800 FAX: (978) 264-9172 http://www.Imipumps.com Replaces same of Rev. E 4/98 1788. F 9/99

Liquitron DC4500 Series Specifications Enclosure Electrical NEMA 12X Type (prewired version) Hardwiring makes the unit suitable for NEMA 4X applications Material Housing - Flame retardant, molded TPE Cover - Clear molded polycarbonate, lockable Environment 32° F to 122° F (0° C to 50° C) 0% to 95% (non-condensing) Relative Humidity Hardware 115 VAC ON/OFF units provided with a 6 ft (2 m) power cord and plug, plus three 1 ft (30 cm) output power cords for pumps 230 VAC ON/OFF units provided with a 6 ft (2 m) power cord and plug and throughput connectors for hardwire connections of controlled devices...