CFW701 | 35
Troubleshooting and Maintenance
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Table 6.3:
Recommended periodic inspections - Every 6 months
Component
Abnormality
Corrective Action
Terminals, connectors
Loose screws
Tighten
Loose connectors
Fans /Cooling systems
Dirty fans
Cleaning
Abnormal acoustic noise
Replace the fan. Refer to the
and
Check the fan connections.
Blocked fan
Abnormal vibration
Dust in the panel air filters
Cleaning or replacement
Printed circuit boards
Accumulation of dust, oil, humidity, etc.
Cleaning
Odor
Replacement
Power module/ Power
connections
Accumulation of dust, oil, humidity, etc.
Cleaning
Loose connection screws
Tightening
Capacitors of the DC link
(Intermediate Circuit)
Discoloration/ odor / electrolyte leakage
Replacement
Safety valve expanded or broken
Frame expansion
Power resistors
Discoloration
Replacement
Odor
Heatsink
Accumulation of dust
Cleaning
Dirt
6.5 CLEANING INSTRUCTIONS
When it is necessary to clean the inverter, follow the instructions below:
Ventilation system:
Disconnect the inverter power supply and wait at least 10 minutes.
Remove the dust from the cooling air inlet by using a soft brush or a flannel.
Remove the dust from the heatsink fins and from the fan blades by using compressed air.
Electronic boards:
Disconnect the inverter power supply and wait at least 10 minutes.
Remove the dust from the electronic board by using an anti-static brush or an ion air gun
(Charge Buster Ion Gun - reference A6030-6DESCO).
If necessary, remove the boards from the inverter.
Always wear a ground strap.
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