1 -10Checking and Controlling the Installation SiteInstall the Inverter in the installation site described below and maintain optimum conditions. Installation SiteInstall the Inverter under the following conditions and a pollution level of 2 or less (UL standard).Protection covers are attached to the top and bottom of the Inverter. Be sure to remove the protection coversbefore installing a 200 or 400 V Class Inverter with an output of 18.5 kW or less in a panel. Refer to Page 1-17on how to remove the protection covers.Observe the following precautions when mounting the Inverter.• Install the Inverter in a clean location free from oil mist and dust. It can be installed in a totally enclosedpanel that is completely shielded from floating dust.• When installing or operating the Inverter, always take special care so that metal powder, oil, water, or otherforeign matter does not get into the Inverter.• Do not install the Inverter on combustible material, such as wood.• Install the Inverter in a location free from radioactive materials and combustible materials.• Install the Inverter in a location free from harmful gasses and liquids.• Install the Inverter in a location without excessive oscillation.• Install the Inverter in a location free from chlorides.• Install the Inverter in a location not in direct sunlight. Controlling the Ambient TemperatureTo enhance the reliability of operation, the Inverter should be installed in an environment free from extremetemperature increases. If the Inverter is installed in an enclosed environment, such as a box, use a cooling fanor air conditioner to maintain the internal air temperature below 45°C. Protecting the Inverter from Foreign MatterPlace a cover over the Inverter during installation to shield it from metal powder produced by drilling.Always remove the cover from the Inverter after completing installation. Otherwise, ventilation will bereduced, causing the Inverter to overheat.Table 1.5 Installation SiteType Ambient Operating Temperature HumidityEnclosed wall-mounted -10 to + 40 °C 95% RH or less (no condensation)Open chassis -10 to + 45 °C 95% RH or less (no condensation)
