Equipment or Machinery Operated: Air compressors, refrigerated and desiccant air dryers, package boilers, water softeners, deionizers or demineralizers, reverse osmosis and installation equipment, clean steam generators, electrical and turbine driven centrifugal chillers, absorption chillers, water cooling towers, condensate equipment, vacuum pumps, catalytic oxidizers, closed-loop building water systems and chemical treatment and testing equipment, and all other equipment necessary for the operation of building utilities systems. Compressors, pumps, electric generators, package boilers, distilled water stills, water cooling towers, deionized water units, reverse osmosis units, water softeners, clean steam generators, condensate, equipment, vacuum pumps, heating equipment, water chillers, chemical treatment and testing equipment, computer-aided control/management systems catalytic oxidizers, and all other equipment necessary for the operation of building utility systems.