Chapter 8 Maintenance
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circuit shouldn’t be less than 3 MΩ.
8.1.3 Replace device at regular intervals
For security of the
ac drive operation, to ensure the long term and reliable operation, the
lifetime of components used in the ac drive must be periodically maintained. The
lifetime of the component will be different because of the different environment and
conditions. For constant operation, users can follow the next table to replace the device.
In addition, the operation environment, load status and the current state should be
considered.
Table 8-4 Parts Replacement Schedule
8.2 Storage and Keeping
After bought in, the ac drive needs to be stored temporarily of secularly if it isn’t
immediately:
●Environmental temperature should be in the defined range. Prevent it from being in
contact with damp, dust powder, metal dirt; keep it in a draughty place.
●If stored period has exceeded one year, users should do charging experiment to recover
the characteristics of electrolytic capacitor. When charging, please use voltage
regulator to increase input voltage to rated voltage of the ac drive slowly and last the
charging 1～2 hours.
●Experiment described above should be done at least one time per year.
Voltage proof experiment will shorten life span of the ac drive. For the electric
insulation test, please choose 500V megohm-meter, Earth resistance should not be less
than 4 MΩ.
Parts Standard replacing years
Cooling Fan
2～3years
Electrolytic capacitor
4～5years
Printed Circuit Board
5～8years
Fuses 10years
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