INVT DBU100H Series - Page 25

Operational manual for dynamic braking unit
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Checking part
Checking item
Checking
method
Criterion
circuit
loose screws and
contactors.
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
Consult the local INVT Service representative for more details on the maintenance. Visit the