370 Maintenance and hardware diagnostics
Cooling fan
The life span of the cooling fan depends on the drive usage and ambient
temperature. Automatic fan on/off control increases the life span (see parameter
1612 FAN CONTROL).
When the assistant control panel is in use, the Notice handler assistant informs when
the definable value of the operating hour counter is reached (see parameter 2901
COOLING FAN TRIG). This information can also be passed to the relay output (see
group 14 RELAY OUTPUTS) regardless of the used panel type.
Fan failure can be predicted by the increasing noise from the fan bearings. If the drive
is operated in a critical part of a process, fan replacement is recommended once
these symptoms start appearing. Replacement fans are available from ABB. Do not
use other than ABB specified spare parts.
Replacing the cooling fan (frame sizes R1…R4)
Only frame sizes R1…R4 include a fan; frame size R0 has natural cooling.
WARNING! Read and follow the instructions in chapter Safety on page
17. Ignoring the instructions can cause physical injury or death, or
damage to the equipment.
1. Stop the drive and disconnect it from the AC power source.
2. Remove the hood if the drive has the NEMA 1 option.
3. Lever the fan holder off the drive frame with, eg, a screwdriver and lift the hinged
fan holder slightly upward from its front edge.
4. Free the fan cable from the clip.
5. Disconnect the fan cable.
6. Remove the fan holder from the hinges.
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