MD380 User Manual Maintenance and Troubleshooting
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9.1.3 Replacement of Vulnerable Components
The vulnerable components of the AC drive are cooling fan and lter electrolytic capacitor.
Their service life is related to the operating environment and maintenance status. Generally,
the service life is shown as follows:
Component Service Life Possible Damage Reason Judging Criteria
Fan 2 to 3 years
• Bearing worn
• Blade aging
• Whether there is crack on the blade
• Whether there is abnormal vibration
noise upon startup
Electrolytic
capacitor
4 to 5 years
• Input power supply
in poor quality
• High ambient temperature
• Frequent load jumping
• Electrolytic aging
• Whether there is liquid leakage.
• Whether the safe valve has projected.
• Measure the static capacitance.
• Measure the insulating resistance.
9.1.4 Storage of the AC Drive
For storage of the AC drive, pay attention to the following two aspects:
1) Pack the AC drive with the original packing box provided by Inovance.
2) Long-term storage degrades the electrolytic capacitor. Thus, the AC drive must be
energized once every 2 years, each time lasting at least 5 hours. The input voltage
must be increased slowly to the rated value with the regulator.
9.2 Warranty Agreement
1) Free warranty only applies to the AC drive itself.
2) Inovance will provide 18-month warranty (starting from the leave-factory date as
indicated on the barcode) for the failure or damage under normal use conditions. If
the equipment has been used for over 18 months, reasonable repair expenses will be
charged.
3) Reasonable repair expenses will be charged for the damages due to the following
causes:
• Improper operation without following the instructions
• Fire, ood or abnormal voltage.
• Using the AC drive for non-recommended function
4) The maintenance fee is charged according to Inovance's uniform standard. If there is
an agreement, the agreement prevails.
9.3 Faults and Solutions
The MD380 provides a total of 24 pieces of fault information and protective functions. After a
fault occurs, the AC drive implements the protection function, and displays the fault code on
the operation panel (if the operation panel is available).
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