During the summer heat, problems with industrial cooling units can be minimized by taking a few extra preventive maintenance steps. Pfannenberg, Lancaster, N.Y., offers the following advice:
  • Clean the unit periodically. Your unit may need a "dusting off," especially in environments with heavy contaminants in the air. Do this by simply removing the exterior cover and using compressed air to blow any buildup out of the heat exchanger. A soft bristle brush also can be used to help loosen any debris.

  • Visually inspect the unit. Make sure moving parts are not showing signs of fatigue. The fans on cooling units use sealed bearings and run without maintenance, but all moving parts eventually will wear out. The fan should spin freely when not connected to power. If there is any resistance, the fan may need replacing.