SMA STP 15000TL Installation - Manual (Page 80)

Troubleshooting SMA Solar Technology AG
80 STP20TLHE-IA-IEN122222 Installation Manual
9. Pre-screw all screws and the corresponding conical
spring washers for the upper enclosure lid and then
tighten them in the sequence shown on the right
(torque: 6.0 Nm). The toothing of the conical spring
washers must point towards the enclosure lid.
The scope of delivery of the inverter includes a
spare screw and conical spring washer.
10. Restart the inverter as described in Section 7 "Commissioning" (page 55).
☑ The varistors have now been replaced and the inverter is back in operation.
DANGER!
Danger to life due to live enclosure lid
The earthing of the upper enclosure lid is ensured by the toothed conical spring washers.
• For all 6 screws attach the conical spring washers with the toothing facing towards
the enclosure lid.