IPE300 series engineering VFD Maintenance
-267-
Check whether conductors are
deformed or color change for
overheat.
Check whether the wire sheaths
are cracked or their color
changes.
Check whether there is damage.
Check whether there is electrolyte
leakage, discoloration, cracks,
and chassis extension.
Check whether the safety valves
are released.
Determine the
service life
based on the
maintenance
information, or
measure them
through
electrostatic
capacity.
Check whether the electrostatic
capacity is measured as required.
Use instruments
to measure the
capacity.
Electrostatic
capacity ≥ initial
value x 0.85
Check whether there is
displacement caused due to
overheat.
Olfactory and
visual
inspection
Check whether the resistors are
disconnected.
Visual
inspection, or
remove one end
of the
connection
cable and use a
multimeter for
measurement.
Resistance range:
±10% (of the
standard
resistance)
Check whether there is unusual
vibration sounds or smells.
Auditory,
olfactory, and
visual
inspection