2.7.3 Replacement of Vulnerable Parts for Inverter
The vulnerable parts of the inverter include cooling fan and îš¿lter 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 replacement according to the operating time.
Cooling fan1)
Possible reason for damage: Bearing is worn and blade is aging.
Judging criteria: Whether there is crack on the blade and whether there is abnormal vibration
noise upon startup.
Filter electrolytic capacitor2)
Possible reason for damage: Input power supply in poor quality, high ambient temperature,
frequent load jumping, and electrolyte aging.
Judging criteria: Whether there is liquid leakage and whether the safe valve has projected, and
measure the static capacitance, and the insulating resistance.
2.7.4 Storage of Inverter
Upon acquiring the inverter, the user shall pay attention to the following points regarding the
temporary and long-term storage of the inverter:
Pack the inverter with original package and place back into the packing box of our 1)
company.
Long-term storage will degrade the electrolytic capacitor. Thus, the product shall be 2)
powered up once every 2 years, each time lasting at least îš¿ve hours. The input voltage
shall be increased slowly to the rated value with the regulator.
Free warranty only applies to the inverter itself.
Our company will provide 18-month warranty (starting from the leave-factory date as 1)
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.
Reasonable repair expenses will be charged for the following situations within 18 months:2)
2.8 Instructions on Warranty of Inverter
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