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5. Disconnect the DC wires from the inverter and the AC wires from the DC Safety Unit.
6. Disconnect the wires connected between the inverter and the DC Safety Unit:
Antenna cable from the communication board
RS485 and/or Ethernet connection from the communication board
Grounding cable
7. Open the DC Safety Unit bracket screws.
Figure 30: DC Safety Unit bracket
8. Disconnect the DC Safety Unit from the inverter by opening the two clips securing
the DC Safety Unit to the inverter: Carefully place a screwdriver between the clip and
the enclosure and pull the clip.
Figure 31: Disconnecting the DC Safety Unit from the inverter
9. Detach the DC Safety Unit from the inverter.
10. Place the new DC Safety Unit and secure it to the inverter using the clips.
11. Insert the wires from the inverter into the openings in the DC Safety Unit and the
ferrite bead.
12. Reconnect the cables: Follow the instructions of
Installing the Inverter on page 19.
13. Close the inverter cover.
14. Fasten the DC Safety Unit bracket using a standard bolt.
Single Phase Inverter with HD-Wave Technology Installation MAN-01-00540-1.0
68
Replacing the DC Safety Unit