User Manual
9 Troubleshooting and Maintenance
75
9.2
Maintenance
9.2.1 Routine Maintenance
Items
Methods
Period
Save data
Save the running data, parameters and
log to a disk or a file.
Once 100 days
General state
of system
Visual check for any damage or
deformation of the inverter.
Check there is any abnormal noise during
the running of the inverter.
Check each parameter of inverter
operation.
Check if the temperature of the housing is
normal. Monitor the system using the
thermal imager.
Every 6 months
System clean
Check the temperature and dust of the
inverter. Clean the inverter enclosure.
Check the humidity and dust of the
environment. Meanwhile check whether
the filter function of the air inlet is ok.
Clean the air inlet and outlet, when
necessary.
Six months to a year (it
depends on the dust
contents in air.)
Electrical
connection
Check whether cable connections are
loose. Tighten the loose connections.
Check whether there is damage to the
cables, especially the surface in contact
with metal.
Check whether the wrap belt of the
connection terminals is strip-off.
Six months after
commissioning and
then once or twice a
year.
Fans
Check whether there is crack of the fan
blade
Check whether there is any abnormal
noise when the fan is turning.
Clean or replace the fans.
Once a year
Safety
function
Check the LCD stop and emergency stop
circuit of the system.
Simulate shutdown and check stop signal
communication.
Check the warning labels, and replace
them if necessary.
Once or twice a year
Software
Software optimization.
Check the setting of every parameter.
Once or twice a year
