Water fed to the top of the cooling tower enters
distribution boxes and passes through orifices and nozzles. If these nozzles
are plugged, missing, broken, or water is not being evenly distributed, the
tower fill will not receive an even water spray. The maintenance staff is
also prone to break these nozzles or force them loose in their frustration
to keep them running clear. Blocked nozzles commonly cause the distribution
boxes to overflow, and broken or missing nozzles typically cause water to
stream unevenly on the outside of the tower.
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