LS SV-iG5H Series, Manual, Page: 209 / 226

Troubleshooting & Maintenance
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12.3 Precautions for maintenance and inspection
Make sure to remove the input power while performing maintenance.
Make sure to perform maintenance after checking the DC link capacitor has discharged. The
bus capacitors in the inverter main circuit can still be charged even after the power is turned off.
Check the voltage between terminal P or P1 and N using a tester before proceeding.
SV-iG5H series inverter has ESD (Electrostatic Discharge) sensitive components. Take
protective measures against ESD before touching them for inspection or installation.
Do not change any inner parts and connectors. Never modify the inverter.
12.4 Check points
Daily inspections 12.4.1
Proper installation environment
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Cooling system fault
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Unusual vibration and noise
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Unusual overheating and discoloration
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Periodic inspection 12.4.2
Screws and bolts may become loose due to vibration, temperature changes, etc.
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Check that they are tightened securely and retighten as necessary.
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Alien substances are clogged in the cooling system.
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Clean it using the air.
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Check the rotating condition of the cooling fan, the condition of capacitors and the
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connections with the magnetic contactor.
Replace them if there are any abnormalities.
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