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 129) 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.
Replacement fans are available from the manufacturer. Do not use other than
specified spare parts.
￭
Replacing the cooling fan, frames size R0…R4
WARNING!
Obey the instructions in chapter Safety instructions (page 15). Ignoring the
instructions can cause physical injury or death, or damage to the equipment.
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 18) before you start the work.
2. Lever the fan assembly off the drive frames with for example a screwdriver
(2a), and pull out the fan assembly (2b).
3. Unplug fan power supply wires from the drive.
4. Install the fan assembly in reverse order.
132 Maintenance and hardware diagnostics
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