Rockwell Automation 7000 PowerFlex Medium Voltage AC Drive (B Frame) - ForGe Control - Manual (Page 100)

100 Rockwell Automation Publication 7000-UM202B-EN-P - June 2014
Chapter 3 Component Definition and Maintenance
4. To detach the PowerCage itself, remove the bolts on the outer flange.
Carefully lift the PowerCage down, placing the forward face down. Do
not over-torque these bolts when replacing the PowerCage.
5. Refer to appropriate section for component replacement.
6. When replacing the PowerCage, it is important to place the bolts on the
outer flange in loosely. Torque bolts alternately on one flange and then the
opposite flange to ensure even tightening of the module. Use the suggested
torquing sequence shown in
Figure 89 .
Figure 89 - Typical torque sequence
Note: The PowerCage is shown with switching components, heat sinks and
clamps removed for ease of lifting.
7. Replace interior assembly in the reverse order of removal.
IMPORTANT The PowerCage can be heavy. Use two people to extract the PowerCage from
the drive to prevent injury or damage to the module.
IMPORTANT A heat pipe PowerCage does not have to be removed to access the snubber
resistors. The resistor cage can be removed within a heat pipe PowerCage
(
Figure 63 ).