Sungrow SG500MX Operation Manual page 49

Operation Manual
Item
Save software
data
System general
running status
and
environment
System cleaning
Power circuit
connection
Terminal and
cable
connection
Fan
maintenance
and
replacement
Device
maintenance
Safety function
Software
maintenance
Method
 Read out SolarInfo Logger data;
 Save running data, parameters and logs to a disk or
a file;
 Check each parameter setting;
 Update software
 Check the inverter for visible damages or
deformation;
 Check the inverter for any abnormal noise during
running;
 Check each parameter of the inverter during
normal operation;
 Check the principal components;
 Check if the enclosure temperature is normal with
the thermal imager;
 Check the air inlet and outlet;
 Check the ambient humidity, dust and air inlet
filter;
Notice! Check the air inlet and outlet. The equipment
may be damaged by overheating.
 Check whether the circuit board and the
component are clean;
 Check the temperature and dust of the heat-sink.
Use vacuum cleaner to clean the module if necessary;
 Replace the air filter.
 Check whether the power cable connections are
loose. Retighten them with the torque specified in
the manual if necessary;
 Check if the power cables and control cables,
especially the surface in contact with the metal are
damaged;
 Check if the wrap belt of the connection terminals
is strip-off.
 Check whether the screws of the control terminals
are loose. Refasten them with screwdriver if
necessary;
 check whether the terminals of the main circuit are
in poor contact and whether the screws are hot;
 check if the connection busbar or screws are
discoloring.
 Visual check the wiring copper bus or bolt for
discoloration;
 check if there is crack in the fan blade;
 Check if there is abnormal noise during the
running of the fan;
 Replace the fan if necessary.
 routine check of the corrosion of the metal
components (once six months)
 annually check the contactors (auxiliary switches
and micro-switches) to ensure the optimal operation;
 Check the running parameters (Voltage and
insulation especially)
 Check the emergency stop button and the LCD
stop function;
 Simulation shutdown and check the shutdown
signal communication signal;
 Check the warning labels and other markings for
damage or unclearness. Replace them if necessary.
 Optimize software
 Check each parameter setting
9 Routine Maintenance
Interval
Once a month
Every six months
From every six
months to annually
depending on the
dust deposits.
Six months after
commissioning for
the first time and
then once every six
month to a year
Once per year
Once per year
From every six
months to annually
From every six
months to annually
From every six
months to annually
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