82
Item Check method
Air inlet and outlet
Check the temperature of the heat sink and the amount of dust
accumulated. Clean heat-dissipation modules with a vacuum
cleaner if necessary.
Device maintenance
• Carry out regular inspection for corrosion of all metal
components.
• Check the contactor to ensure a normal mechanical
operation.
• Check the operation parameters (especially voltage and
insulation).
The recommended routine maintenance periods in the table are only for reference.
The actual maintenance period shall be determined reasonably in consideration
of the specific installation environment of the product.
Power plant scale, location, site environment, and other factors also affect the
maintenance period of the product. It is necessary to shorten the maintenance pe-
riod and increase the maintenance frequency in the event of a heavy sandstorm
or dust in the operating environment.
11.3 Common Maintenance Items
It is recommended to clean the inverter once every six months. If the inverter works in harsh
environments, such as desert areas, the maintenance cycle should be shortened.
11.3.1 Cleaning Air Inlet of Inverter
Overview
The following figure shows the heat dissipation mode of the inverter. The air inlet is located
at the higher parts of the DC cabinet while the air outlet is located at the lower parts of the
AC cabinet.
11 Routine Maintenance System Manual
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