Rockwell Automation 7000L PowerFlex 7000 Medium Voltage AC Drive C Frame - Marine - Manual (Page 218)

4-42 Component Definition and Maintenance
7000L-UM302B-EN-P – June 2013 7000 ―C‖ Frame - Marine
PowerCage Removal
1. Ensure there is no power to the equipment.
and Replacement
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 board. 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. Before removing the PowerCage, all the components located
within the PowerCage need to be removed to avoid any damage
to the components. Consult the required sections to remove
clamping pressure, SGCT and SCR boards, detachment of
cooling system, and chill block removal.
A T T E N T I O N A T T E N T I O N The SGCT and SCR can be destroyed or
damaged by static charges. Personnel must be
properly grounded before removing circuit
boards from the PowerCage. Use of damaged
circuit boards may also damage related
components. A grounding wrist strap is
recommended for handling.
3. With all the components removed, detach the manifold assembly
by removing the bolts on the outer flange. Carefully lift the
PowerCage down, placing the front face down. Do not
overtorque these bolts when replacing the PowerCage.
I M P O R T A N T I M P O R T A N T The PowerCage is heavy and it is preferred
that two people should extract the
PowerCage from the drive to prevent injury
or damage.
4. When replacing the PowerCage, it is important to place the bolts
on the outer flange loosely. Torque bolts alternately on one
flange and then the opposite flange to ensure even tightening of
the module. A suggested sequence for torquing PowerCage bolts
is shown in Figure 4.32.
I M P O R T A N T I M P O R T A N T When replacing the PowerCage, always be
sure all the PowerCage components are
removed.
5. After the PowerCage is securely fastened to the backplane refer
to the appropriate sections to replace all other components.