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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.
Step 1
Disconnect the external AC circuit breaker or disconnect to prevent it
from accidentally reconnecting to the utility grid.
Step 2
Rotate the D
C switch to the “OFF” position for disconnecting all of the PV
string inputs
Step 3
Wait about 5 minutes until the capacitors inside the inverter have been
discharged.
Step 4
Ensure that the DC cable is current-free via a current clamp.
Step 5
Insert a MC4 wrench into the notch and press the wrench with an
appropriate force to remove the DC connector.
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Step 6
Remove the AC junction box, ensure that the AC wiring terminals are
voltage-free via a multimeter, and remove the AC wires.
Step 7
Install the MC4 waterproof plugs and AC waterproof cover.
For further disconnection and reconnection instructions, please visit the
webpage of respective component manufacturer.
8.2 Dismantling the Inverter
Refer to Chapter 5 and Chapter 6 to dismantle the inverter in reverse steps.
