7 Routine Inspection and Maintenance
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7.3.4 DC Bus Electrolytic Capacitors
1. Possible causes of damage: input power supply in poor quality; high ambient temperature; frequent load
jumping; and electrolytic aging.
2. Judging criteria: Whether there is liquid leakage; whether the sage valve has projected; measure the static
capacitance; and measure the insulation resistance.
3. Replacement of Electrolytic Capacitor: as the replacement concerns the internal components of the drive,
contact the agent or Inovance to perform the replacement.
7.4 Storage
For storage of the AC drive, pay attention to the following three aspects:
1. Pack the AC drive with the original packing box provided by Inovance.
2. Do not expose the AC drive to moisture, high temperature or outdoor direct sunlight for a long time.
3. The electrolytic capacitor will deteriorate after being stored for a long time. Thus, the AC drive must be
switched on once every 6 months, each time lasting at least 5 hours. Ensure to increase the input voltage
gradually to rated value by using a voltage regulator.
7.5 Warranty
Free warranty only applies to the AC drive itself.
Inovance will provide 18-month warranty from date of manufacturing for the failure or damage under nor-
mal use conditions. If the equipment has been used for over 18 months, reasonable repair expenses will be
charged.
Reasonable repair fee will be charged for the damages due to the following causes in 18 months:
1. Improper operation without following the instructions
2. Fire, ood or abnormal voltage.
3. Using the AC drive for non-recommended function
4. Using the AC drive without following the specications
5. Damage caused by force majeuer, such as natural disaster, earthquake and lightning stroke
The maintenance fee is charged according to Inovance's uniform standard. If there is an agreement, the agree-
ment prevails.
For warranty details, refer to the Product Warranty Card.
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