ICC Commercial Mechanical Practice Exam

Regular cleaning of cooling towers is essential to prevent the growth of bacteria and scale buildup. Cooling towers operate by evaporating water to dissipate heat, creating a moist environment where bacteria, such as Legionella, can thrive if not properly maintained. Routine cleaning helps to eliminate biological growth and sediment buildup, which can cause blockages or impair system efficiency. Furthermore, scale buildup can reduce heat transfer efficiency and lead to increased operational costs. Therefore, consistent maintenance, including cleaning, is vital for ensuring the safe and efficient operation of cooling towers. This practice safeguards public health and improves the longevity and performance of the equipment.

The other options are important but not as critical as regular cleaning in the context of cooling tower maintenance. Annual inspections and regular repainting help with overall longevity and structural integrity, while weekly filter replacements are more relevant for systems such as air handling units rather than the cooling towers themselves.