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To prevent misuse or accidents caused by unrelated personnel: Post prominent
warning signs or demarcate safety warning areas around the inverter to prevent
accidents caused by misuse.
Restart the inverter only after removing the fault that impairs safety performance.
As the inverter contains no component parts that can be maintained, never open
the enclosure, or replace any internal components.
To avoid the risk of electric shock, do not perform any other maintenance opera-
tions beyond those described in this manual. If necessary, contact your distributor
first. If the problem persists, contact SUNGROW. Otherwise, the losses caused is
not covered by the warranty.
Touching the PCB or other static sensitive components may cause damage to the
device.
• Do not touch the circuit board unnecessarily.
• Observe the regulations to protect against electrostatic and wear an anti-static
wrist strap.
9.2.2 Routine Maintenance
Item Method Period
Device Clean
Check the temperature and dust of the
inverter. Clean the inverter enclosure if
necessary.
Six months to a year
(depending on the dust con-
tents in air)
Electrical
connection
Check whether all cable are firmly con-
nected in place.
Check whether there is damage to the
cables, especially the surface in con-
tact with metal.
6 months after commissioning
and then once or twice a year
General status
of the system
• Visual check for any damage or de-
formation of the inverter.
• Check any abnormal noise during
the operation.
• Check each operation parameter.
• Be sure that nothing covers the
heat sink of the inverter.
Every 6 months
9 Troubleshooting and Maintenance User Manual
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