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5.3 Routine and periodic inspection
To ensure stable and safe operations, check and maintain the inverter at regular intervals.
Use the checklist below to carry out inspection.
Disconnect power after approximately 5 minutes to make sure no voltage is present on the output terminals
before any inspection or maintenance.
Items
Ambient
Confirm the temperature
conditions at
and humidity at the machine
the installation
Installation
Is the grounding resistance
Grounding
correct?
Any loose parts or
terminals?
Connection
Any damage to the base ?
terminals
Any corroded Terminals?
Any broken wires?
Wiring
Any damage to the wire
insulation?
Input power
Is the voltage of the main
voltage
circuit correct?
Any contamination or
Printed circuit
damage to printed circuit
board
board?
Any dust or debris
Power
component
Check resistance between
terminals
Unusual vibration and
noise?
Cooling fan
Excessive dust or debris
Heat sink
Excessive dust or debris
Is the ventilation path
Ventilation Path
blocked?
Checking
Details
Daily
Environment & Ground connection
◎
Terminals & Wiring
voltage
◎
Circuit boards and components
Cooling System
◎
◎
◎
period
Methods
1Year
Measure with
thermometer
and
hygrometer
Measure the
resistance
◎
with a
multi-tester
◎
Visual check
Check with a
◎
screwdriver
◎
◎
Visual check
◎
Measure the
voltage with a
multi-tester
◎
Visual check
◎
Measure with
◎
a multi-tester
Visual and
◎
sound check
Visual check
5-7
Criteria
Remedies
Temperature:
Improve the
-10 ~40°C
ambient or
(14~120°F)
relocate the
Humidity:
drive to a
Below
better area.
95%RH
Improve the
200Vclass:
grounding if
below 100Ω
needed.
Correct
Secure
installation
terminals and
requirement
remove rust
Correct wiring
Rectify as
requirement
necessary
Voltage must
Improve input
conform with
voltage if
the spec.
necessary.
Clean or
Correct
replace the
circuit board
component
Clean
condition
components
No short
circuit or
Consult with
broken circuit
the supplier
in three
phase output
Consult with
the supplier
Clean the fan
Correct
Clean up
cooling
debris or dust
Clear the
path
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