SMA SUNNY BOY 3000-US Installation Manual page 84

11 Cleaning and Care
If no voltage is present at the DC varistors, replace all DC varistors.
• Insert the insertion tool into the rectangular
opening of the terminal.
• Remove the DC varistor.
• Insert the new DC varistor into the terminal.
• Pull the insertion tool out of the rectangular
opening of the terminal.
6. Ensure that all DC varistors in the terminals are securely in place.
7. Re-insert all string fuses into the DC Disconnect:
• Remove the 4 fuse extractors without string fuses from the fuse holders of the DC Disconnect.
• Equip the 4 fuse extractors with functional string fuses.
• Insert the 4 fuse extractors with string fuses into the fuse holder of the DC Disconnect.
8. Re-connect the string connectors of all ungrounded DC cables to the PV array.
9. Close the DC Disconnect (see Section 9.4).
10. Commission the inverter (see Section 8).
84 SB30-40-US-IA-en-33
SMA America, LLC
Installation Manual