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 Clean
Abnormal acoustic noise Replace the fan
Blocked fan
Clean or replaceAbnormal vibration
Dust in the cabinet air filter
Printed circuits boards
Accumulation of dust, oil, humidity, etc. Clean
Odor Replace
Power module / Power
connections
Accumulation of dust, oil, humidity, etc. Clean
Loose connections screws Tighten
DC bus capacitors
(Dc link)
Discoloration / odor / electrolyte leakage
ReplaceExpanded or broken safety valve
Frame expansion
Power resistors
Discoloration
Replace
Odor
Heatsink
Accumulation of dust
Clean
Dirt
(*) The CFW100 fan can be easily replaced as shown in Figure 6.1 on page 38.
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 for 10 minutes.
Remove the dust from the cooling air inlet by using a soft brush or cloth.
Remove the dust from the heatsink fins and from the fan blades by using compressed air.
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