INVENTOR: MAYER, ROBERT52 Whitemarsh RoadArdmore, County of DelawareCommonwealth of Pennsylvania 19003TITLE OF THE INVENTION: "CONTROL SYSTEM FOR COOLING TOWER FANS"ABSTRACT OF THE DISCLOSUREA control system for automatically controllingthe operation of a plurality of fans for a cooling towerso that the minimum number of fans and the lowest speedsare used to provide the required cooling necessary at anyone time. The fans are individually controlled in responseto the temperature of the working fluid, to he either offor operated at a low or high speed so that as the temperatureof the working fluid increases, more fans are turned onfirst to their low speed and then to their high speed.Safety features are provided for starting the system andfor changing the speeds of the fans to prevent damage tothe control system and unnecessary wear on the fan motors.
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