1. Regularly check whether the wiring of each part of the inverter is firm and loose, especially carefully check the fan, power module, input terminal, output terminal and grounding.

2. once the alarm stops, can not start immediately, should find out the cause and repair the start again, check should be strictly in accordance with the inverter maintenance manual steps.

3. the operator must be specially trained, can judge the cause of the general failure, and can eliminate, such as skilled replacement of fuses, components and damaged circuit boards. Without training personnel, shall not operate the equipment.

4. If there is an accident that is not easy to be ruled out or the cause of the accident is not clear, it should make a detailed record of the accident and inform the inverter manufacturer to solve it in time.