User Manual EM303B General Purpose Inverter 2.3 Considerations of Installation Site 2.3.1 Installation Site Considerations for installation site: Good ventilation indoor Ambient temperature: -10 C ～ +40 C No high temperature and high moisture, humidity: ＜ 90%RH, no water drops or any other condensation Never install on flammable materials No direct sunlight No flammable, corrosive gas or liquid No dust, floating fiber or metal particles Firm and steady installation base No electromagnetic interference, and keep away from interference source. 2.3.2 Ambient Temperature Install inverter in a place with good ventilation to improve the reliability of inverter operation.
When inverter is mounted inside a cabinet, cooling fan or air conditioner is a must. Keep the ambient temperature below +40 C. 2.3.3 Precautions Please take protective measures during installation to prevent foreign matters like metal particles or dust from entering the inverter when drilling. After installation, please take off the protective devices. 2.4 Direction and Space of Installation Cooling fan(s) installed inside EM303B is for forced air cooling. For good cooling circulation, please mount inverter vertically, and leave sufficient space between the inverter and wall or other objects. See Figure 2-2.
Figure 2-2 Direction and Installation of Inverter 17 - R >150mm >150mm EM303B4.0kW >120mm Vent >120mm Vent