INVT Goodrive350-19 Series Operation Manual page 388

Goodrive350-19 Series VFD for Crane
Check scope
Cooling fan
Cooling
system
Ventilation duct
For more details about maintenance, contact the local INVT office, or visit our website www.invt.com,
and choose Support > Services.
9.3 Cooling fan
The service life of the cooling fan of the VFD is more than 25,000 hours. The actual service life of the
cooling fan is related to the use of the VFD and the temperature in the ambient environment.
You can view the running duration of the VFD through P07.14 (Accumulated running time).
The increase of the bearing noise indicates a fan fault. If the VFD is applied in a key position, replace
the fan once the fan starts to generate unusual noise. You can purchase spares of fans from INVT.
Cooling fan replacement:
Read chapter 1 Safety precautions carefully and follow the instructions to perform
operations. Ignoring these safety precautions may lead to physical injury or death, or
device damage.
Item
Check whether there is
unusual smell or discoloration.
Check whether
cracks, damage, deformation,
or rust.
Check whether
electrolyte leakage
deformation.
Check whether
unusual sounds or vibration.
Check whether the bolts loose. Screw them up.
Check whether
discoloration caused due to
overheat.
Check whether
foreign matters blocking or
attached to the cooling fan, air
inlets, or air outlets.
Check whether
foreign objects attached.
Method
Olfactory and visual
inspection
there are
Visual inspection
Visual
there is
and determine the
service life based
or
on the maintenance
information.
Auditory and visual
there are inspection, and turn
the fan blades with
your hand.
Visual
there is and determine the
service life based
on the maintenance
information.
there are
Visual inspection
there are
-376-
Maintenance
Criterion
No exception
occurs.
No
occurs.
inspection,
No
occurs.
The rotation
smooth.
No
occurs.
inspection,
No
occurs.
No
occurs.
exception
exception
is
exception
exception
exception