User Manual EM303B General Purpose Inverter During Operation Danger 1. Do not touch cooling fans, heat sink, metal panel, or discharge resistor with bare hands. Risk of burning. 2. Non-professionals shall not detect signals during operation. Risk of personal injury or device damage. Caution 1. Prevent any foreign items from being left in the devices during operation. Risk of device damage. 2. Do not control start/stop of inverter by ON/OFF of contactor. Risk of device damage. Maintenance Danger 1. Maintain and inspect devices after power is off. Risk of electric hazard. 2.
Maintain and inspect inverter only after the voltage is lower than DC 36V between DC bus terminals & , and power is off for 5 minutes. The residual charge on capacitor may cause personal injury. 3. Maintenance and inspection can only be performed by professionals. Risk of personal injury. 4. Parameter setting is required if inverter has been replaced. Plug-in& plug-out should be performed after power-off. 7