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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 of
the inverter to OFF;
•
The DC switch can be secured with a lock in the OFF position or a certain an-
gle beyond the OFF position.
•
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 per-
sons 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, SUN-
GROW shall not be held liable for any damage caused.
Servicing of the device in accordance with the manual should never be under-
taken in the absence of proper tools, test equipments or the latest revision of
the manual which has been clearly and thoroughly understood.
10 Troubleshooting and Maintenance
User Manual
