Goodrive350-19 series VFD for crane
Maintenance
-398-
9 Maintenance
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.
Check scope
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
Common
Check whether the bolts loose or
come off.
Screw them up.
No exception
occurs.
Check whether the machine is
deformed, cracked, or damaged, or
their color changes due to
overheating and aging.
Visual
inspection
No exception
occurs.
Check whether there are stains
and dust attached.
Visual
inspection
No exception
occurs.
Note:
Discoloration of
copper bars does
not mean that they
cannot work