Symbols
Inspection, maintenance action if neededI
Inspection in harsh conditions, maintenance action if needed(I)
ReplacementR
Replacement in harsh conditions(R)
Other work (commissioning, tests, measurements, etc.)O
* Ambient temperature constantly over 40 °C, especially dusty or humid ambient conditions, cyclic heavy load,
or continuous rated (full) load.
To maintain the best possible performance and reliability of the drive, inspect the drive annually. Contact ABB
Service at least once in three years for replacement of aging components.
Note:
Recommended maintenance intervals and component replacements are based on operation in specified am-
bient conditions.
Heatsink
The drive heatsink fins pick up dust from the cooling air. The drive can run into
overtemperature warnings and faults if the heatsink is not clean. When necessary, clean
the heatsink as follows:
WARNING!
Obey the instructions in chapter Safety instructions (page 11). Ignoring the
instructions can cause physical injury or death, or damage to the equipment.
WARNING!
Use a vacuum cleaner with antistatic hose and nozzle. Using a normal vacuum
cleaner creates static discharges which can damage circuit boards.
1. Stop the drive and disconnect it from the power line. Wait for 5 minutes and then make
sure by measuring that there is no voltage. See section Electrical safety
precautions (page 14) before you start the work.
2.
Remove the cooling fan(s). See section Electrical safety precautions (page 14).
3. Blow clean, dry and oil free compressed air from bottom to top and simultaneously use
a vacuum cleaner at the air outlet to trap the dust.
Note:
If there is a risk of dust entering adjoining equipment, perform the cleaning in another
room.
4. Reinstall the cooling fan(s).
Fans
See section Maintenance intervals (page 101) for the fan replacement interval in average
operation conditions.
In a speed-controlled fan, the speed of the fan matches the cooling needs. This increases
the life span of the fan.
Maintenance and hardware diagnostics 103
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