Maintenance 117
Heatsink
The drive module heatsink fins pick up dust from the cooling air. The drive runs 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. If you
ignore them, injury or death, or damage to the equipment can occur.
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 do the steps in section Precautions before electrical work before
you start the work.
2. Remove the drive module from the cabinet.
3. Remove the module cooling fan(s). See section Fans below.
4. Blow dry, clean 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.
5. Reinstall the cooling fan.
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