User Manual of EM730/EM730E Series Inverter 2.3.3 Preventive measures Take protective measures to the inverter during installation to prevent metal fragments or dust generated in drilling and other processes from falling into the inverter. Remove the protection after installation. 2.4 Installation Direction and Space The EM730/EM730E-1R5-3B inverters and above are equipped with the cooling fan for forced air cooling. To ensure good cyclic cooling effects, the inverter must be installed in a vertical direction, and sufficient spaces must be reserved between the inverter and adjacent objects or baffles (walls). Refer to Fig. 2-2. Fig.2-2 Inverter Installation Direction and Space 25