Chapter 9 Maintenance and Repair
104
Chapter 9 Maintenance and Repair
9-1.Inspection and Maintenance
During normal use of the inverter, in addition to routine inspections, the regular
inspections are required (e.g. the overhaul or the specified interval, and the interval shall
not exceed 6 months),please refer to the following table to implement the preventive
measures.
Check Date
Check
Points Check Items
Check to be
done
Method
Criterion
Routine Regular
√
Di
sp
la
y
LED/OLED
display
Whether
display is
abnormal or
not
Visually
check
As per
use status
√
√
C
ool
ing
sy
st
em
Fan
Whether
abnormal
noise or
vibration
exists or not
Visually
and
audibly
check
No abnormal
√
B
ody
Surrounding
conditions
Temperature,
humidity,
dust, and
harmful gases
Visually
check
with
smelling
and
feeling
As per
Section 2-1
√
In
pu
t/o
utp
ut
ter
m
in
al
s
Voltage
Inputs, output
voltage is
abnormal
Test R,
S, T and
U, V, W
terminals
As per
standard
specifications
√
M
ai
n ci
rcu
it
Overall
Whether
these
phenomenon
of loose
fastenings,
overheat,
discharging,
much dust, or
blocked air
duct exist or
not
Visually
check,
tighten
and clean
No abnormal
