Routine Maintenance; Maintenance Instruction - Sungrow SG33CX User Manual

9 Troubleshooting and Maintenance
Risk of inverter damage if it is improperly serviced.
Use accessories and spare parts approved by the inverter manufacturer
only. Never modify the inverter or other components of the inverter.
Unauthorized alterations will void guarantee and warranty claims and in
most cases terminate the operating license. SUNGROW shall not be held
liable for any damage caused by such changes.
Any malfunction that may impair the inverter safety operation must be
repaired immediately before the inverter is restarted.
Inverter contains no customer serviceable parts inside. Please contact local
authorized personnel if any service work is required.

9.2.1 Routine Maintenance

Item Method
System Check the temperature and dust of the
clean inverter. Clean the inverter enclosure if
necessary.
Check if the air inlet and outlet are
normal. Clean the air inlet and outlet, if
necessary.
Fans Check whether there is fan warning
using APP.
Check whether there is any abnormal
noise when the fan is turning.
Clean or replace the fans if necessary
(see the following section).
Cable entry Check whether the cable entry is
insufficiently sealed or the gap is
excessively large, and reseal the entry
when necessary.
Electrical Check whether all cable are firmly in
Connection place.
Check whether a cable is damaged,
especially the part contacting the metal
enclosure.

9.2.2 Maintenance Instruction

Fan Maintenance
Fans inside the inverter are used to cool the inverter during operation. If the
fans do not operate normally, the inverter may not be cooled down and inverter
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User Manual
Period
Six months to a year
(depend on the dust
contents in air.)
Once a year
Once a year
Six months to a year