256
ACS550 User’s Manual
Maintenance
Main fan replacement
The drive’s main cooling fan has a life span of about 60 000 operating hours at
maximum rated operating temperature and drive load. The expected life span
doubles for each 10 °C (18 °F) drop in the fan temperature (fan temperature is a
function of ambient temperatures and drive loads).
Fan failure can be predicted by the increasing noise from fan bearings and the
gradual rise in the heatsink temperature in spite of heatsink cleaning. 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.
Frame sizes R1
…
R4
To replace the fan:
1. Remove power from drive.
2. Remove drive cover.
3. For frame size:
• R1, R2: Press together the retaining clips on the fan
cover sides, and lift.
• R3, R4: Press in on the lever located on the left side
of the fan mount, and rotate the fan up and out.
4. Disconnect the fan cable.
5. Install the fan in reverse order.
6. Restore power.
Frame sizes R5 and R6
To replace the fan:
1. Remove power from drive.
2. Remove the screws attaching the fan.
3. Remove the fan:
• R5: Swing the fan out on its hinges.
• R6: Pull the fan out.
4. Disconnect the fan cable.
5. Install the fan in reverse order.
6. Restore power.
Arrows in the fan show the directions of the
rotation and air flow.
X0021
3
4
2
X0022
Bottom view (R6)
2
4
Bottom view (R5)
2
3
X5023
Summary of Contents for ACS550 Series
Page 1: ...ACS550 User s Manual ACS550 01 Drives 0 75 132 kW ACS550 U1 Drives 1 200 hp ...
Page 4: ......
Page 10: ...10 ACS550 User s Manual Table of contents ...
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Page 276: ...276 ACS550 User s Manual Technical data WARNING Do not use RFI EMC filters on IT systems ...