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NO.7 Maintenance and Fault Information
NO.7 Maintenance and Fault Information
Regular maintenance and inspection during the application shall make your inverter in
normal condition for long period.
7.1 Maintenance and inspection cautions
1 Be sure to first cut off power supply of inverter (L1. L2. L3) during maintenance and
inspection.
2 Be sure cut off power supply of the inverter and make the display disappear; conduct
maintenance and inspection till high-voltage indicator is off.
3 Never pull up or mismatch internal power supply, wires and cables during the inspection;
otherwise the inverter shall not operate or be damaged.
4 During installation, do not leave the screws and other fittings inside the inverter so as to
avoiding short circuit of circuit board.
5 After the installation, keep the inverter clean and prevent the dust, oil mist or moisture
invading.
7.2 Regular inspection items
1 Confirm the voltage meets the demand of inverter;
(In particular, pay special attention to the damage of power line and motor)
2 Whether the terminal and connector are loose;
(Whether power line and terminal connecting line suffer from strand breakage)
3 Whether there is dust, scrap iron and corrosive liquids inside the inverter;
4 Prohibit measuring insulation impedance of the inverter;
5 Measure output voltage, output current and output frequency of the inverter;
(avoid big difference in measurement results)
6 Inspect whether the ambient temperature is around -5℃-40℃ and installation environment
has good ventilation;
7 Keep the humidity below 90% (without condensing into water droplet);
8 Whether there is abnormal sound or abnormal vibration during the running (avoid placing
the inverter in the place with severe vibration);
9 Please regularly clean venthole.
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