SMA SB 3300-11 Installation - Manual (Page 43)

SMA Solar Technology AG Opening and Closing
Installation Manual SB33-38-11-IA-en-62 43
8. Loosen the screws of the enclosure lid.
9. Pull the enclosure lid forward smoothly.
☑ The inverter is open and no voltage is present.
7.3 Closing the Inverter
1. Attach the enclosure lid using the 4 screws and the
conical spring washers with the toothing facing
toward the enclosure lid. Tighten the screws to a
torque of approx. 6 Nm in order to ensure the
sealing of the enclosure and the grounding of the
enclosure lid.
2. Check the DC connectors for correct polarity and connect them.
To unlock the DC connectors see section 7.2 "Opening the Inverter" (page 41).
3. Close all the DC inputs that are not needed as described in section 5.5.4 "Connecting the PV
Array (DC)" (page 34) to seal the inverter.
DANGER!
Danger to life due to the enclosure lid carrying voltage.
The grounding of the enclosure lid is ensured by the conical spring washers.
• Attach the conical spring washers for all screws with the toothing facing toward the
enclosure lid.