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Replacing the auxiliary cooling fan, frames R5...R8
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. Remove the front cover (see Installing the drive vertically, frames
R5…R8 (page 63)).
3. Unplug fan power supply wires from the drive.
4. Release the retaining clips.
5. Lift the fan off.
6. Install the new fan in reverse order. Make sure that the arrow on the fan points
up.
Maintenance and hardware diagnostics 115
Replacing the auxiliary cooling fan, frames R5
WARNING! Obey the instructions in chapter Safety instructions on page 11.
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 Precautions before
electrical work on page 14 before you start the work.
2. Remove the front cover (see page 50).
3. Unplug fan power supply wires from the drive.
4. Release the retaining clips.
5. Lift the fan off.
6. Install the new fan in reverse order. Make sure that the arrow on the fan points up.
Capacitors
The drive intermediate DC circuit employs several electrolytic capacitors. Their
lifespan depends on the operating time of the drive, loading and ambient
temperature. Capacitor life can be prolonged by lowering the ambient temperature.
Capacitor failure is usually followed by damage to the drive and an input cable
fuse failure, or a fault trip. Contact the manufacturer if capacitor failure is
suspected. Replacements are available from the manufacturer. Do not use other
than specified spare parts.
Maintenance and hardware diagnostics 135
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