Astraada DRV-24 - Cooling Fan

Astraada DRV-24 frequency inverters Fault tracking
85
Checking part
Checking item
Checking
method
Criterion
multimeters
Transformers and
reactors
Ensure there is no
abnormal vibration,
noise and smelling,
Hearing,
smelling and
visual
examination
NA
Electromagnetism
contactors and
relays
Ensure whether there
is vibration noise in the
workrooms.
Hearing
NA
Ensure the contactor is
good enough.
Visual
examination
NA
Control
circuit
PCB and plugs
Ensure there are no
loose screws and
contactors.
Fasten up
NA
Ensure there is no
smelling and
color-changing.
Smelling and
visual
examination
NA
Ensure there are no
crackles, damage
distortion and rust.
Visual
examination
NA
Ensure there is no
weeping and distortion
to the capacitors.
Visual
examination or
estimate the
usage time
according to the
maintenance
information
NA
Cooling
system
Cooling fan
Estimate whether
there is abnormal noise
and vibration.
Hearing and
Visual
examination or
rotate with
hand
Stable rotation
Estimate there is no
losses screw.
Tighten up
NA
Ensure there is no
color-changing caused
by overheating.
Visual
examination or
estimate the
usage time
according to the
maintenance
information
NA
Ventilating duct
Ensure whether there
is stuff or foreign
objection in the cooling
fan, air vent.
Visual
examination
NA
6.1.1 Cooling fan
The inverter’s cooling fan has a minimum life span of 25,000 operating hours. The actual life span