A90 series Inverter User Guide 7 Maintenance and Inspection 7.1 Routine Maintenance and Inspection of inverter Due to the use of the inverter environment, as well as the internal components of the inverter aging and other factors, may lead to a variety of inverter failure. Therefore, in the storage, the use of the inverter must be carried out on a regular basis maintenance. Before using inverter, user shall check if the components are broken or the screws are loose during transportation. While using inverter, user shall regularly clean the dust and check whether the screws are loosened.
If inverter is left unused for a long term, user is recommended to power on inverter every half year during the storage. Every time, inverter shall be powered on for half an hour. This will prevent the electronic device from invalidation. The frequency converter should avoid the use of moisture, vibration, oil, salt spray, corrosive gas, conductive dust environment. If used in such an environment, it must be placed in a cabinet with protective measures or in a small room with environmental protection. When the inverter is running normally, please confirm the following: Whether the motor has abnormal sound and vibration, the motor is abnormal heat.
Whether the ambient temperature is too high. The output current value is normal. Whether the cooling fan of the inverter is operating normally. eliminate faults and safety hazards. Check, be sure to cut off the power, until the keypad LED off Depending on the usage, the customer should periodically check the frequency converter to 10 minutes before the check. Check the contents shown in Table 7-1. Table 7-1 Periodically check the contents 38 Items Inspection content Countermeasures Screws of main circuit terminal and control circuit terminal. Whether the screws are loosened. Tighten the screws with a screwdriver. Cooling fin Whether there is dust or foreign object.
Clean up dust and foreign objects with dry-compressed air of 4-6kg/cm2 pressure. PCB