INVT Goodrive350-19 Series Operation Manual page 386

Goodrive350-19 Series VFD for Crane
9.1 What this chapter contains
This chapter describes how to carry out preventive maintenance on the VFD.
9.2 Periodical inspection
Little maintenance is required when the VFD is installed in an environment that meets requirements.
The following table describes the routine maintenance periods recommended by INVT. The following
table describes the routine maintenance periods recommended by INVT.
Check scope
Ambient environment
Voltage
Keypad
Main
Common
circuit
9 Maintenance
Item
Check the temperature, and
humidity, and whether there is
vibration, dust, gas, oil spray,
and water droplets in the
environment.
Check whether there are
foreign matters, such as tools,
or dangerous substances
placed nearby.
Check the voltage of the main
circuit and control circuit.
Check the display of
information.
Check whether characters are
not completely displayed.
Check whether the bolts loose
or come off.
Check whether the machine is
deformed, cracked, or
damaged, or their color
changes due to overheating
and aging.
Check whether dirt or dust is
attached.
Method
Visual inspection,
and use instruments
for measurement.
Visual inspection
Use multimeters or
other instruments
for measurement.
Visual inspection
Visual inspection
Screw them up.
Visual inspection
Visual inspection
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Maintenance
Criterion
The requirements
stated in this
manual are met.
There are no tools
or dangerous
substances
placed nearby.
The requirements
stated in this
manual are met.
The characters
are displayed
properly.
The requirements
stated in this
manual are met.
No exception
occurs.
No exception
occurs.
No exception
occurs.
Note:
Discoloration of
copper bars
does not mean
that they cannot