5 Maintenance
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5.2 Periodic Inspection
Inspection
Item
Inspection Details
Inspection Method and
Troubleshooting
Inspection
Period
Checked
Mechanical
components
Check whether abnormal
noise or vibration exists.
Check whether fasteners such
as screws are loose.
Check whether deformation
or damage occurs.
Check whether discoloring
occurs due to overheat.
Check whether dust or de-
facement exists.
◆
Check by observing and
hearing.
◆
Tighten fasteners.
◆
Replace the deformed
or damaged compo-
nent.
◆
Clean dust with a vac-
uum cleaner, and wipe
surface dirt gently with
a soft cloth immersed
in neutral detergent.
Half a year
Cables
Check whether discoloration
exists on the cables and con-
nections.
Check the cable insulation
layer for aging or wear.
◆
Replace cracked cables.
◆
Replace damaged ter-
minals.
Half a year
Air filter
Check whether the air filter
and heatsink are clogged or
stuck with any foreign matter.
Check whether the air inlet
and outlet are clogged or
stuck with any foreign matter.
◆
Clean the air filter and
heatsink.
◆
Clean the air inlet and
outlet.
Half a year
Control
circuit
Check whether control com-
ponents are in poor contact.
Check whether terminal
screws are loose.
Check whether control cable
insulation is cracked.
◆
Clear away foreign
matters on the surface
of control cables and
connection terminals.
◆
Replace damaged or
corroded control ca-
bles.
Half a year
5.3 Replacement of Wear Parts
5.3.1 Lifetime of Wear Parts
Wear parts of the AC drive include the cooling fan and filter electrolytic capacitor. Their
lifetime is related to the operating environment and maintenance. The lifetime of the
two components under general conditions is listed as below.
Component
Lifetime
[1]
Cooling fan
≥ 5 years
Electrolytic capacitor
≥ 5 years
