The second edition of this Recommendation concerns application of the machinery safety directive to cooling towers, closed circuit coolers, condensers and thermal storage products. This Recommendation is to be used as a guideline by the manufacturers of cooling towers, closed circuit coolers, condensers and thermal storage products. Cooling towers, closed circuit coolers, condensers and thermal storage products shall be intended as partly completed machinery. Manufacturers are not allowed to fix a CE marking on the above products. The document supersedes its previous edition from 1999 and is available in the English language.