Replacing The Dc Safety Unit - SolarEdge Delta SE12.5K Installation Manual

7. Remove the screws securing the inverter to the mounting bracket and remove the
inverter from the mounting bracket.
NOTE
If you remove the old inverter and do not immediately install a new one, use
insulation tape to isolate each of the AC and DC wires
8. Place the new inverter on the mounting bracket; insert the screws securing the
inverter to the mounting bracket.
9. For inverters with a Connection Unit, screwthe two conduit nuts in the inverter
securing the DC Safety Unit to the inverter.
10. Connect all the wires to the inverter: Follow the instructions of Installing the Inverter
on page 19 and Activating, Commissioning and Configuring the System on page 33.
11. Close the DC Safety Unit cover (if applicable) and the inverter cover.

Replacing the DC Safety Unit

Removing the DC Safety Unit
1. Turn OFF the inverter ON/OFF/P switch, and wait until the green LED is blinking ,
indicating that the DC voltage is safe (<50V), or wait five minutes before continuing
to the next step.
2. Turn OFF the DC Safety Unit and the AC breaker of the distribution panel.
3. Open the inverter cover.
4. Disconnect the DC and AC wires from the inverter. If there are ferrite beads on the
DC and AC wires in the inverter, open them and set aside.
5. Disconnect the RS485 connector from the inverter communication board.
6. Unscrew the two conduit nuts in the inverter securing the DC Safety Unit to the
Three Phase System MAN-01-00505-1.5
Appendix F: Replacing and Adding System Components
Figure 34: Conduit nuts
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