Maintenance; Precautions; Routine Inspection; Periodical Inspection - LG SV-iS5 Instruction Manual

8.5 Maintenance

The iS5 series is an industrial electronic product with advanced semiconductor elements. However, temperature,
humidity, vibration and aging parts may still affect it. To avoid this, it is recommended to perform routine inspections.
8.5.1

Precautions

Be sure to remove the drive power input while performing maintenance.
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Be sure to perform maintenance only after checking that the bus has discharged. The bus capacitors in the
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electronic circuit can still be charged even after the power is turned off.
The correct output voltage can only be measured by using a rectifier voltage meter. Other voltage meters,
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including digital voltage meters, are likely to display incorrect values caused by the high frequency PWM output
voltage of the drive.
8.5.2

Routine Inspection

Be sure to check the following before operation:
The conditions of the installation location
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The conditions of the drive cooling
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Abnormal vibration
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Abnormal heating
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8.5.3

Periodical Inspection

Are there any loose bolt, nut or rust caused by surrounding conditions? If so, tighten them up or replace them.
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Are there any deposits inside the drive-cooling fan? If so, remove using air.
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Are there any deposits on the drive' s PCB (Printed Circuit Boards)? If so, remove using air.
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Are there any abnormalities in the various connectors of the drive' s PCB? If so, check the condition of the connector
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in question.
Check the rotating condition of the cooling fan, the size and condition of the capacitors and the connections with the
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magnetic contactor. Replace them if there are any abnormalities.
8.5.4 Internal Fuse Replacement
When the internal fuse is opened the IGBT ' s should be checked thoroughly before replacing the fuse.
Contact the factory for replacement fuse information.
Morek IT OÜ, Rauna 24, 76506 Saue Harjumaa, Estonia. www.morek.eu Tel. +372 604 1423 Fax +372 604 1447 morek@morek.eu
Chapter 8 - Troubleshooting & Maintenance
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