Dual cooling tower spillover temperature control system is intended for chilled water processes and allows two or more cooling towers to be individually controlled. The control system allows the controller to establish different setpoints for each cooling tower. The variable control option helps processing plants continuously reduce energy costs. The system utilizes an Allen-Bradley RS Logix 5000 PLC with a unique proprietary ladder-logic and structured text program in conjunction with variable-frequency drives to control the fans speed.

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