Chapter 2 Product Information
2.7 Daily Maintenance of Inverter
1) Daily Maintenance
2) Periodical Checking
3) Replacement of Wearing Parts
Daily Maintenance :
Daily Cleaning :
Checking items :
Insulation test (use DC 500V Mega-Ohm-Meter)should be done separately after disconnecting
Note :
Since the influence of ambient temperature , humidity , dust and vibration , the components in
inverter may for aging and wearing ,which will give rise to the occurrence of potential faults and reduce
the life of inverter . Therefore , it is quite necessary to perform routine and periodic maintenance to the
inverter .
Periodically check the places that are hardly checked during the running.
The wearing parts of inverter mainly include the cooling fan and filtering electrolytic capacitor .
Their lifetime is closely related to the operating environment and maintenance . Generally, their lives are :
User could determine to replace them according to their work time
Component Life
Fan
Capacitor
the input power cables from the inverter ; or else , the inverter will be damaged . The mega-ohm-Meter
test had been done at factory . Therefore ,users need not do this test again .
As the filter capacitor still has high voltage after the power supply to the inverter is switchedNote :
off , do not maintain or repair the inverter until the bus voltage is below 36V .
a Check if there is any abnormal noise during the running of motor、
a Keep the inverter in a clean status .、
a Check the ventilation channels and clean them periodically、
b Check if the screws are loose、
c Check if the inverter is rusted、
d Check if the input/output terminals has burning mark、
e Check the insulating in main circuit、
b Clear the dust from the inverter and prevent the dust, especially the metal powder, from entering、
c Clear the oil dirt in the cooling fan of the inverter .、
the inverter .
b Check if there is any vibration of motor、
c Check if the installation environment of inverter changes、
d Check if the cooling fan of inverter works normally、
2to3years
4to5years
10
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General