Sungrow SG2500U-MV, Системное руководство

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12 Routine Maintenance System Manual
86
Once any unconformity is found during routine maintenance of the MV Station
and internal devices please make correction immediately. If any doubts arise,
please contact Sungrow.
Item Method Interval
External checking
Make correction immediately once the following
items are found:

Check if there are flammable materials on top of
and around the MV Station; and if there are other
factors that may impair the system operation

Check if the MV Station and the foundation are
firmly connected and if there is rust
Every quarter
System states and
cleaning

Check the MV Station and internal devices for
deformation and damages

Check the MV Station and internal devices for
abnormal noise

Check if the MV Station internal and device
enclosure temperature is too high

Check if the MV Station internal humidity and
dust deposition are too heavy. Clean the MV
Station.

Check if the air inlet and outlet are blocked;
Once a month
MV Station
cleaning

Check if the circuit board and the component are
clean;

Check the temperature and dust of the heat-sink.
Use vacuum cleaner to clean the MV Station if
necessary;

Replace the air filter if necessary

Notice! Check the air inlet and outlet. The device
may be damaged by overheating.
From every six
months
to
annually
depending
on
the dust
deposits.
Warning labels

Check if the warning labels are clearly visible.
Replace them if necessary
Once per year
Cable connection
Check the cable connection after the MV Station and
internal devices are voltage free. Make correction
once unconformity is found.

Check if all cable entries are sealed properly;

Check if there is water leakage inside the MV
Station; check if MV Station windows and doors
can close and open flexibly; check if the sealing
strip is sealed properly

Check if 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
Once per year
Air inlet/outlet
Check if the air inlet filter and ventilation ducts of the
MV Station and internal devices are normal
Clean or replace the filter
Every six
months or
maintain
according
to
real situation