User Manual
9 Troubleshooting and Maintenance
71
9.2 Maintenance
Risk of inverter damage or personal injury due to incorrect service!
Always keep in mind that the inverter is powered by dual sources: PV
strings and utility grid.
Before any service work, observe the following procedure.
Disconnect the AC circuit breaker and then set the DC load-break
switch if the inverter to OFF;
Wait at least 10 minutes for inner capacitors to discharge completely;
Verify that there is no voltage or current before pulling any connector.
Keep non-related persons away!
A temporary warning sign or barrier must be posted to keep
non-related persons away while performing electrical connection and
service work.
Restart the inverter only after removing the fault that impairs safety
performance.
As the inverter contains no component parts that can be maintained,
never arbitrarily replace any internal components.
For any maintenance need, please contact SUNGROW. Otherwise,
SUNGROW shall not be held liable for any damage caused.
Servicing of the device in accordance with the manual should never
be undertaken in the absence of proper tools, test equipments or the
latest revision of the manual which has been clearly and thoroughly
understood.