SMA WB 3000-21 Installation - Manual (Page 74)

11 Troubleshooting SMA Solar Technology AG
74 WB3-5TL-21-IA-en-10 Installation Manual
6. Insert the new varistor into the terminal. The marking
on the varistor must point left to the enclosure.
7. Remove the insertion tool from the contacts of the
terminal block.
8. Place the upper enclosure lid with the 5 screws and
conical spring washers on the enclosure and
tighten them using an Allen key (AF 4) in the order
1 to 5. The teeth of the conical spring washer must
face the enclosure lid.
9. Re-commission the inverter (see Section 10).
ETFV 20K510 1
132
ETFV 20K510 1 132
3
5
4
2
1