KE300A Inverter Product Information
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2.7 Routine Maintenance of Inverter
2.7.1 Routine Maintenance
The influence of the ambient temperature, humidity, dust and vibration will cause the aging of the devices
in the inverter, which may cause potential fault of the inverter or reduce the service life of the inverter.
Therefore, it is necessary to carry out routine and periodical maintenance on the inverter.
Routine inspection Items include:
1) Whether there is any abnormal change in the running sound of the motor;
2) Whether the motor has vibration during the running;
3) Whether there is any change to the installation environment of the inverter;
4) Whether the inverter cooling fan works normally;
5)
Whether the inverter has over temperature.
Routine cleaning:
1) The inverter should be kept clean all the time.
2) The dust on the surface of the inverter should be effectively removed, so as to prevent the dust
entering the inverter. Especially the metal dust is not allowed.
3) The oil stain on the inverter cooling fan should be effectively removed.
2.7.2 Periodic Inspection
Please perform periodic inspection on the places where the inspection is a difficult thing.
Periodic inspection Items include:
1) Check and clean the air duct periodically;
2) Check if the screws are loose;
3) Check if the inverter is corroded;
4) Check if the wire connector has arc signs;
5) Main circuit insulation test.
Remainder: When using the megameter (DC 500V megameter recommended) to measure the insulating
resistance, the main circuit should be disconnected with the inverter. Do not use the insulating resistance
meter to test the insulation of control circuit. It is not necessary to conduct the high voltage test (which has
been completed upon delivery).
2.7.3 Replacement of Vulnerable Parts for Inverter
The vulnerable parts of the inverter include cooling fan and filter electrolytic capacitor, whose service life
depends on the operating environment and maintenance status. General service life is shown as follows:
Part Name
Service Life
Fan
2~3 years
Electrolytic capacitor
4~5 years
The user can determine the year of replacement according to the operating time.
