SMA SB 3300 Installation - Manual (Page 45)

SMA Solar Technology AG Opening and Closing
Installation Guide SB33_38-IEN111851 45
8. Loosen the screws of the enclosure lid.
9. Pull the lid forward smoothly.
☑ The inverter is now open and free of voltage.
7.3 Closing the Inverter
1. Secure the lid with the 4 screws and the safety
washers with the toothing facing toward the lid. The
screws must be tightened with approximately 6 Nm
torque to ensure the sealing of the enclosure and
the grounding of the lid.
2. Check the DC plug connector for correct polarity and connect it.
To release the plug connectors see section 7.2 ”Opening the Inverter” (page 43).
DANGER!
Danger to life due to high voltages in the inverter!
The capacitors in the inverter require 15 minutes to discharge.
• Wait 15 minutes before opening the inverter.
DANGER!
Danger to life due to live lid!
The grounding of the lid is ensured by the safety washers.
• Fasten the safety washers for all 6 screws with the toothing facing toward the lid.