cooling tower overflow Decreasing Water Use via Regular Cooling Tower Maintenance - Regularly check the makeup water float and valve for correct setting and leakage. An incorrect setting, or valve leakage, can cause constant cooling tower overflow resulting in substantial excess water usage. - To reduce water loss from cooling tower drift, water suspended in the air flow through the unit, ensure that the unit drift eliminators are in good working order. - Regularly check the seals in the cooling system recirculation pump(s) for leakage, repair any leakage immediately. - Routinely review the entire cooling system piping system for any leakage, repair immediately. - Prevent any cooling water overflow from the system during cooling tower shutdowns by installing a check valve on the pump discharge and ensuring that the cooling tower sump, or cold well, is properly level controlled and of sufficient size to contain all drain down. - Conductivity meter/contro
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