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10-25
10.5 Routine and periodic inspection
To ensure safe and problem free operation, check and maintain the inverter at regular intervals.
Use the checklist below as a maintenance guideline.
Disconnect power and wait approximately 10 minutes unit charge led is no longer lit to make sure no voltages are
present on the output terminals before performing inspection or maintenance.
Items
Details
Checking
period
Methods
Criteria
Remedies
Daily
1Year
Environment & Ground connection
Ambient
conditions on
site
Confirm ambient
temperature and
relative humidity on
site
◎
Measure with
thermometer
and hygrometer
Temperature:
-10
– 40°C
(14-120°F)
Humidity: Below
95%RH
Improve the
ambient or
relocate the
drive to a better
area.
Are there flammable
materials close to the
inverter?
◎
Visual check
Keep area clear
Installation
Grounding
Any unusual vibration
from surrounding
machine
◎
Visual and
noise check
Keep area clear
Secure screws
Is the grounding
resistance correct?
◎
Measure the
resistance with
a multi-meter
200Vclass:
below 100Ω
Improve the
grounding if
needed.
Terminals & Wiring
Connection
terminals
Check for loose
terminals
◎
Visual check
Check with a
screwdriver
Correct
installation
requirement
Secure
terminals and
remove rust
Check for damage to
the base of the
inverter
◎
Check for corroded
Terminals
◎
Wiring
Check for broken
wires
◎
Visual check
Correct wiring
requirement
Rectify as
necessary
Check wire insulation
◎
Input Voltage
Input power
voltage
Check input voltage
◎
Measure the
voltage with a
multi-meter
Voltage must
conform with the
spec.
Improve input
voltage if
necessary.