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Abnormal Phenomenon Major Cause(s) Remedy
The power unit rises in temperature
during operation.
• High ambient
temperature
• Poor ventilation
• Considerable voltage
drop
• Overload
• High number of starts
• Make sure the power unit is
complying with the
environmental
specifications.
• Perform inspection and
cleaning according to
“Engine & Electric Motor
Spec. Operation”.
• Replace the cabtire cable
with one adhering to
specifications.
• Reduce loads.
• Reduce the number of
starts.
The leak detector of the Inverter unit
main breaker is tripped.
• High humidity
• Presence of water
droplets
• Poor grounding
• A break in stator
winding
• Make sure the power unit is
complying with the
environmental
specifications.
• Attach the cover properly.
• Adhere to grounding
standards.
Inspection, repair,
replacement
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