6 Mechanical Installation - Frame Size A, B and C6.1.1 Safety Requirements of Mechanical InstallationPay attention to the requirements that apply to integration and field mounting kit. Observe the information in the list to avoid seriousdamage or injury, especially when installing large units.The frequency converter is cooled by means of air circulation.To protect the unit from overheating, it must be ensured that the ambient temperaturedoes not exceed the maximum temperature stated for thefrequency converter and that the 24-hour average temperatureis not exceeded. Locate the maximum temperature and 24-hour average in the paragraphDerating for Ambient Temperature.If the ambient temperature is in the range of 45 °C - 55 ° C, derating of the frequency converter will become relevant, seeDerating for AmbientTemperature.The service life of the frequency converter is reduced if derating for ambient temperature is not taken into account.FC 300 Design Guide6 Mechanical Installation - Frame Size A, B andCMG.33.BC.02 - VLT® is a registered Danfoss trademark 1176