11 PREVENTIVE AND CORRECTIVE MAINTENANCE
3BHS213401 E01 REV H ACS1000 AIR-COOLED USER MANUAL 178/184
1. Disconnect all power supplies to the drive and ground the drive.
2. To isolate the fan from the auxiliary power supply, switch off the motor starter of the fan.
3. Remove the panels.
- If the fan is removed towards the front of the cabinet, the top panel can stay on the
cabinet.
- If the rear panel is not accessible, remove the sound absorbing panels on the side where
the fan is replaced.
Figure 11-14: Redundant fan unit – removing the panels
4. Unplug the power supply cable.
For more information, see “11.6.2 De-energizing the drive locally” on page 162.
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