Kruger Ecowatt Drive K120 Series, Operation Manual

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Ecowatt ® Drive K120 series Fault tracking
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6 Fault tracking
6.1 Fault prevention
This chapter describes how to carry out preventive maintenance on VFDs.
6.1.1 Periodical maintenance
If the VFD is installed in an environment that meets requirements, little maintenance is
needed. The following table describes the routine maintenance periods recommended
by Kruger. For more detailed information on maintenance, please contact us.
Subject Item Method Criterion
Ambient environment
Check the temperature, and
humidity, and whether
there is vibration, dust, gas,
oil spray, and water droplets
in the environment.
Visual
inspection,
and use
instruments
for
measurement.
The
requirements
stated in this
manual are
met.
Check whether there are
foreign matters, such as
tools, or dangerous
substances placed nearby.
Visual
inspection
There are no
tools or
dangerous
substances
placed nearby.
Voltage
Check the voltage of the
main circuit and control
circuit.
Use
multimeters
or other
instruments
for
measurement.
The
requirements
stated in this
manual are
met.
Keypad
Check the display of
information.
Visual
inspection
The characters
are displayed
properly.
Check whether characters
are
not completely displayed.
Visual
inspection
The
requirements
stated in this
manual are
met.
Main
circuit
For public use
Check whether the bolts
loose or come off.
Screw them
up.
No exception
occurs.
Check whether the machine
and insulator is deformed,
cracked, or damaged, or
their color changes due to
overheating and aging.
Visual
inspection
No exception
occurs.