SolarEdge SE3000H-US Installation Manual page 77

Replacing the DC Safety Unit
3. Turn OFF the DC Safety Unit.
4. Open the DC Safety Unit cover: Release the four Allen screws and remove the cover.
5. Open the inverter cover as described in Removing the Inverter Cover on page 54.
6. Disconnect the DC and AC cables from the DC Safety Unit.
7. Disconnect the wires connected between the inverter and the DC Safety Unit:
Antenna cable from the communication board
l
DC and AC wires in the DC Safety Unit
l
Grounding cable
l
8. Disconnect the DC Safety Unit from the inverter by opening the two clips securing the Safety Switch
to the inverter: Carefully place a screwdriver between the clip and the enclosure and pull the clip.
9. Detach the DC Safety Unit from the i nverter.
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.
12. Reconnect the cables: Follow the instructions of Installing the Inverter on page 23.
13. Close the inverter cover.
14. Perform the commissioning steps as described in Commissioning the Installation on page 32.
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Single Phase Inverter with HD-Wave Technology Installation MAN-01-00306-1.1
Figure 38: Disconnecting the DC Safety Unit from the inverter