Inovance MD380 Series, User Manual

Page: 294 / 304

Maintenance and
Troubleshooting MD380 User Manual
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Chapter 9 Maintenance and Troubleshooting
9.1 Routine Repair and Maintenance of the MD380
9.1.1 Routine Maintenance
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of the devices in the AC drive, which may cause potential faults or reduce the service life of
the AC drive. Therefore, it is necessary to carry out routine and periodic maintenance.
Routine maintenance involves checking:
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Routine cleaning involves:
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Keep the AC drive clean all the time.
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Remove the dust, especially metal powder on the surface of the AC drive, to prevent
the dust from entering the AC drive.
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Clear the oil stain on the cooling fan of the AC drive.
9.1.2 Periodic Inspection
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Periodic inspection involves:
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Check and clean the air duct periodically.
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Check whether the screws become loose.
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Check whether the AC drive is corroded.
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Check whether the wiring terminals show signs of arcing.
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Carry out the main circuit insulation test.
Note
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Before measuring insulating resistance with megameter (500 VDC megameter recommended),
disconnect the main circuit from the AC drive.
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Do not use the insulating resistance meter to test the insulation of the control circuit. The high
voltage test need not be performed again because it has been completed before delivery.
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