Inspection And Maintenance; Daily Inspection And Regular Maintenance - INVT Goodrive390L Series User Manual

Goodrive390L Series Lift-Dedicated VFD

9.1 Daily inspection and regular maintenance

The VFD internal components will become aging due to the influence of environmental
temperature, humidity, dust, vibration and other factors, which causes the potential
failure or shortens the service life. Therefore, to extend the VFD service life and prevent
safety hazards, daily inspection and regular maintenance are required.
Check item
Daily inspection: Recommended on each day.
Whether the ambient temperature, humidity, vibration,
dust, gas, and oil are too great, and whether there is
condensation or water droplets inside and outside the
Ambient
environment
machine
Whether there are foreign matters, such as tools, or
dangerous substances placed nearby
Power supply Whether the voltage between the main circuit and
voltage
control circuit is normal
Whether display is clear
Keypad
Whether some characters or fields are displayed
incompletely
Fan
Whether it runs normally
Whether the motor is overloaded or overheating, or it
Load
sounds abnormally.
Regular maintenance: Recommended on a quarterly basis, especially in harsh
environments such as with dust, oil, or corrosive gases. Before regular maintenance,
cut off the power and wait at least 15 min.
Whether the bolts become loose or come off
Whether the machine is deformed, cracked, or
damaged, or the color changes due to overheating and
aging
Machine
Whether much dirt or dust is attached
Whether there is abnormal sound or vibration, odor,
discoloration (transformer, reactor and fan)
Whether the installation is secure, motor insulation is
Motor
normal, and the fan runs properly
Whether there is discoloration, deformation, or damage Visual inspection
Cable
Whether the cable connectors or bolts become loose
202403 (V1.0）

9 Inspection and maintenance

Content
Inspection and maintenance
Method
Visual inspection,
and
instruments
measurement.
Visual inspection
Multimeter
voltage meter
Visual inspection
Visual inspection
Visual inspection
Visual inspection
Visual inspection
Visual inspection
Visual inspection
Auditory, olfactory,
and
inspection
Instrument
visual inspection
Visual inspection
use
for
or
visual
or
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