Chapter 2 Product Information
-19-
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.
NoteNote
The maintenance cannot be performed
immediately because there still is high
voltage on the filter capacitor after
disconnecting the power. The repair or
maintenance can be conducted only after
the charge LED indictor is OFF and the
bus voltage measured with multimeter is
less than 36V.
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 heatsink fan
works normally;
5) Whether the inverter has over
temperature;
Routine cleaning:
The inverter shall be kept clean all the
time.
The dust on the surface of the inverter
shall be effectively removed, so as to prevent
the dust entering the inverter.
Especially the metal dust is not allowed.
The oil stain on the inverter heatsink fan
shall 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:
Check and clean the air duct periodically;
Check if the screws are loosened;
Check if the inverter is corroded;
Check if the wire connector has arc signs;
Main circuit insulation test
Remainder: When using the megameter (DC
500V megameter recommended) to measure
the insulating resistance, the main circuit shall
be disconnected with the inverter. Do not
use the insulation resistance meter to test the
insulation performance of the control loop. 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 to 3 years
electrolytic capacitor 4 to 5 years
The user can determine the year of
efesotomasyon.com
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