In environments with high temperatures and humidity, corrosive gases such as sulphur, nitrogen, andchlorine compounds will cause chemical processes on the frequency converter components.Such chemical reactions will rapidly affect and damage the electronic components. In such environments,mount the equipment in a cabinet with fresh air ventilation, keeping aggressive gases away from thefrequency converter.An extra protection in such areas is a coating of the printed circuit boards, which can be ordered as anoption.NB!Mounting frequency converters in aggressive environments increases the risk of stoppagesand considerably reduces the life of the converter.Before installing the frequency converter, check the ambient air for liquids, particles, and gases. This isdone by observing existing installations in this environment. Typical indicators of harmful airborne liquidsare water or oil on metal parts, or corrosion of metal parts.Excessive dust particle levels are often found on installation cabinets and existing electrical installations.One indicator of aggressive airborne gases is blackening of copper rails and cable ends on existing in-stallations.Vibration and ShockThe frequency converter has been tested accord-ing to a procedure based on the shown standards:The frequency converter complies with require-ments that exist for units mounted on the wallsand floors of production premises, as well as inpanels bolted to walls or floors.IEC/EN 60068-2-6: Vibration (sinusoidal) - 1970IEC/EN 60068-2-64: Vibration, broad-band ran-domFC 300 Design GuideIntroduction to FC 30016 MG.33.B7.02 - VLT is a registered Danfoss trademark
