EM630/TC6A Closed-Loop Vector Hoist Inverter User Manual Maintenance Danger 1. Maintain and inspect the device only after the inverter is powered off to avoid an electric shock. 2. Maintain and inspect the inverter only after the main circuit is powered off and the CHARGE indicator is off. Otherwise, the residual electric charge of the capacitor may result in personal injury. 3. Maintenance and inspection can be performed by well-trained technicians only, so as to avoid personal injury. 4. Parameter setting is required if the inverter has been replaced. Plug-in & plug-out should be performed after power-off. 5