User Manual of A90 Series Inverter
264
Chapter 10 Maintenance
10.1 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. The check content is shown in Table
Check Item
Check contents
Solution
Screws of main
circuit terminals
Check whether the screws are
loose.
Tighten
the
screws
with
a
screwdriver.
