Rockwell Automation 7000A PowerFlex Medium Voltage AC Drive - Air-Cooled (A Frame) - Manual (Page 266)

5-24
Component Definition and Maintenance
7000A-RM001A-EN-P – January 2011 7000 “A” Frame
Heatsink Replacement The PowerFlex drive uses an aluminum or copper heatsink, depending on
the drive rating.
Figure 5.19 – Heatsink
1.
Ensure there is no power to the equipment.
A T T E N T I O N A T T E N T I O N To prevent electrical shock, ensure the main
power has been disconnected before working on
the drive. Verify that all circuits are voltage free
using a hot stick or appropriate voltage-
measuring device. Failure to do so may result in
injury or death.
2.
Remove the load from the clamp head per the procedure on page
6-19.
3.
Completely remove the SGCT from the heatsink that is being replaced
per the instructions on pages 6-22 to 6-27.
4.
There are 2 bolts that secure the heatsink to the PowerCage. They are
13-mm bolts, and should be removed using several extenders to get
the socket wrench out past all the sensitive gate driver boards.
5.
Loosen the two bolts and carefully remove the heatsink from the
PowerCage.