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8 System Decommissioning
8.1 Disconnecting the Inverter
For maintenance or other service work, the inverter must be switched off.
Proceed as follows to disconnect the inverter from the AC and DC power
sources. Lethal voltages or damage to the inverter will follow if otherwise.
1. Stop the inverter via the LCD menu. For details, see “7.6
Starting/Stopping the Inverter”.
2. Disconnect the AC circuit breaker and secure it against reconnection.
3. Rotate the DC switch to the “OFF” position and then disconnect all of the
PV string inputs.
4. Wait at least 10 minutes until the capacitors inside the inverter
completely discharge.
5. Ensure that the DC cable is current-free via a current clamp.
6. Insert a MC4 wrench into the notch and press the wrench with an
appropriate force to remove the DC connector.
7. Lay the tool in the location of snap and press the tool down. Remove the
AC connector, ensure that the AC wiring terminals are voltage-free via a
multimeter, and remove the AC wires.
8. Install the MC4 waterproof plugs and AC waterproof cover.
For further disconnection and reconnection instruction, please visit
the webpage of respective component manufacturer.
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