INVT Goodrive20-EU Series Operation Manual page 108

Goodrive20-EU Series VFD
Item to be checked
Transformers
and reactors
Electromagnetic
contactor and
relay
Control
PCB and plugs
circuit
Cooling
Cooling fan
system
Details
Ensure there is no
abnormal vibration,
noise and smelling,
Ensure whether there is
vibration noise in the
workrooms.
Ensure the contactor is
good enough.
Ensure there are no
loose screws and
contactors.
Ensure there is no
smelling and
color-changing.
Ensure there are no
crackles, damage
distortion and rust.
Ensure there is no
weeping and distortion
to the capacitors.
Estimate whether there
is abnormal noise and
vibration.
Estimate there is no
losses screw.
Ensure there is no
color-changing caused
by overheating.
-103-
Check mode
multimeters
Hearing, smelling
and visual
examination
Hearing
Visual examination NA
Fasten up
Smelling and visual
examination
Visual examination NA
Visual examination
or estimate the
usage time
according to the
maintenance
information
Hearing and Visual
examination or
rotate with hand
Tighten up
Visual examination
or estimate the
usage time
according to the
maintenance
information
Fault tracking
Criterion
NA
NA
NA
NA
NA
Stable rotation
NA
NA