Air Inlet Louvers

Potential Problems:

Scaled Inlet Louvers on AT Units

Potential Causes:

  • Improper water treatment
  • Insufficient bleed rates
  • Excessive cycling of the fan motor
  • High concentrations of solids in water

Scale should not be removed using a power washer or wire brush because it could damage the louvers. Remove the louver assemblies and let them soak in the cold water basin of the unit. The water treatment chemicals in the unit will neutralize and dissolve the buildup of scale. Please note that the time required for soaking the inlet louvers depends on the severity of the scale buildup. Note: This assumes chemicals are being used.