General FeaturesLow sound levelLow heightNo vibration transmissionFRP Casing, free of maintenance and corrosionFully assembled in our factoryIntegrated frame supportCoilSulzer H.C.S (High Conductivity System)Modular constructionEpoxy coated fansDocumentation DOWNLOAD Assembly and Operation Manual DOWNLOAD Sound LevelsConfigurationModel* Dissip. (kW)Dry Weight (kg)Service Weight (kg)Recirculation Pump (kW)Fan Power (kW)Length (mm)Width (mm)Height (mm)Dim. DrawingPlane DWGTechnical FeaturesWITHOUT ATTENUATIONEWK-DC 225/399136023600.753.0345916122170Open Download [-]EWK-DC 225/4128148024800.753.0345916122470Open Download [-]EWK-DC 225/5165166026600.753.0345916122470Open Download [-]EWK-DC 324/3180170531801.54.0378418962215Open Download [-]EWK-DC 324/4203190134501.54.0378418962535Open Download [-]EWK-DC 324/5230214537801.54.0378418962535Open Download [-]EWK-DC 450/3218204039202.27.5439522092265Open Download [-]EWK-DC 450/4301227541852.27.5439522092565Open Download [-]EWK-DC 450/5383258544652.27.5439522092565Open Download [-]EWK-DC 680/3383328062004.07.5543123692600Open Download [-]EWK-DC 680/4410360065004.07.5543123692870Open Download [-]EWK-DC 680/5450396069004.07.5543123692870Open Download [-]EWK-DC 900/3492388072004.011.0676220922600Open Download [-]EWK-DC 900/4555420076004.011.0676220922870Open Download [-]EWK-DC 900/5559456080104.011.0676220922870Open Download [-]WITH ATTENUATIONEWK-DAC 225/399171027100.753.0445916123165Open Download [-]EWK-DAC 225/4128183028300.753.0445916123165Open Download [-]EWK-DAC 225/5165201030100.753.0445916123165Open Download [-]EWK-DAC 324/3180235538551.54.0478418963230Open Download [-]EWK-DAC 324/4203255140511.54.0478418963550Open Download [-]EWK-DAC 324/5230279542951.54.0478418963550Open Download [-]EWK-DAC 450/3218264046302.27.5534022093300Open Download [-]EWK-DAC 450/4301287548652.27.5534022093600Open Download [-]EWK-DAC 450/5383318551752.27.5534022093600Open Download [-]EWK-DAC 680/3383340067004.07.5642623693890Open Download [-]EWK-DAC 680/4410380071004.07.5642623694160Open Download [-]EWK-DAC 680/5450420075004.07.5642623694160Open Download [-]EWK-DAC 900/3492503084004.011.0777220923890Open Download [-]EWK-DAC 900/4555535088004.011.0777220924160Open Download [-]EWK-DAC 900/5559571091604.011.0777220924160Open Download [-]* Heat rejection at the following conditions: Tin: 35,0 ºC, Tout: 30,0 ºC, Twb: 24,0 ºCAdditional EquipmentSound attenuators for air inlet and outlet.Electric water control level in the Basin.Winter Pack (Thermostat & immersion heater).Variable speed drives.Water treatment dosing systemsSwitch level controlWorking PrinciplesThe fluid to be cooled (usually water or glycol water) flows through the tubes of the coil without coming into direct contact with the external air, preventing dirt or pollution from entering the primary water circuit. The heat – from the fluid is conducted through the tube walls to the water, which is sprayed over the coil.The fan at the base of the tower forces air in counterflow to the water, causing a small proportion of the spray water to be evaporated. The evaporative process cools the remaining water causing heat from the coil surface to be transferred from the spray water to the atmospheric air passing through the tower. The remaining water is re-circulated by the spray water pump from the basin to the spray nozzles. (Secondary circuits). A small quantity of heat is also transmitted by sensible heat exchange to the atmospheric air in a similar manner to an air cooler.