Rockwell Automation 2100 CENTERLINE Low Voltage Motor Control Centers - Manual (Page 47)

Rockwell Automation Publication 2100-IN012E-EN-P - February 2012 47
Chapter
4
Installing and Removing Plug-in Units
Installing Plug-in Units For unit installation, refer to CENTERLINE 2100 Motor Control Centers
(MCC) Units with Vertical Operating Handles Installation Instructions,
publication
2100-IN014 , and CENTERLINE 2100 Motor Control Center
(MCC) Units with Horizontal Operating Handles Installation Instructions,
publication
2100-IN060 .
ATTENTION: When installing or removing MCC units, when possible, de-
energize, lockout, and tag-out all sources of power to the MCC. If the
MCC units will be installed or removed with power applied to the main
power bus, follow established electrical safety work practices. Refer to
the NFPA 70E Standard for Electrical Safety in the Workplace publication.
ATTENTION: Review your company safety lockout and tag-out
procedure.
De-energize all units before installing or removing.
ATTENTION: All covers and doors must be in place before applying
power to the MCC. If units are removed, they must be replaced with the
appropriate items such as units, doors, and unit support pans.
ATTENTION: When installing units for CENTERLINE 2100 Motor Control
Centers with the ArcShield rating, you must make sure you are installing a
unit that has the same arc resistance rating as the MCC in which it is
being installed. The arc resistance rating can be found on the ArcShield
label on the vertical wireway door.
Units that are not rated for 100 ms arc duration must not be installed in a
section that is rated for 100 ms arc duration. The arc resistant rating will not
apply if that is done.