Rockwell Automation 2100 CENTERLINE Low Voltage Motor Control Centers - Manual (Page 54)

54 Rockwell Automation Publication 2100-IN012E-EN-P - February 2012
Chapter 4 Installing and Removing Plug-in Units
For the CENTERLINE 2100 MCC units with arc-resistant door latches,
you may need to tilt the top of the unit slightly to the rear to avoid
interference with the top arc latch bracket before removing the unit. If you
do not have enough clearance, you will need to loosen the latch bracket
screw (approximately two turns) to remove the unit.
9. Remove the unit from the MCC.
10. Carefully install protective caps or close manual shutters after the unit is
removed.
Automatic shutters will close as units are removed.
TIP For dual-mounted, fusible-feeder disconnect switch units, you
will need to remove the bottom arc latch bracket. You can do this
by first removing the unit below the dual disconnect unit.
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.
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.
Latch Bracket
Latch Bracket