User Manual of EM730/EM730E Series Inverter
310
Maintenance
9.3
Daily Maintenance of Inverter
The inverter may be subject to various faults due to changes in its operating environment,
such as the impact of temperature, humidity, smoke, dust and the like, and ageing of internal
components. Thus, daily inspection and regular maintenance should be carried out to the
inverter during storage and operation.
Check whether the components of the inverter are intact and whether the screws are
tightened after transportation and before operation.
During the normal operation of the inverter, clean dust on a regular basis and check
whether the screws are tightened.
If the inverter is not in use for a long time, it is recommended to power it on (preferably
30 min) once every six months during storage, to prevent the failure of electronic
components.
The inverter should not be used in the humid place or place with metal dust. If necessary,
use the inverter in an electrical cabinet with protective measures or an on-site protective
cabin.
Please check the following items during the normal operation of the inverter:
Check the motor for abnormal sound and vibration.
Check the inverter and motor for abnormal heating.
Check whether the ambient temperature is too high.
Check whether the output current is normal.
Check whether the cooling fan of the inverter works properly.
Depending on the usage, the user needs to check the inverter on a regular basis to eliminate
faults and safety hazards. Prior to the inspection, turn off the power supply and wait until the
LED indicator of the keyboard is OFF, and then wait for 10min. The check content is shown in
