Rockwell Automation 2193FZ Feeder Circuit Breaker Units Secure Support Pan and ChangeDoor Latch - Manual (Page 9)

Rockwell Automation Publication 2100-IN092A-EN-P - April 2013 9
Feeder Circuit Breaker Units Secure Support Pan and Change Door Latch
1. Remove the protective caps from the stab openings or open the manual
shutters if present (automatic shutters open as the units are inserted).
2. For 0.5 space factor units, place the unit on the bottom unit support pan,
slide the unit interlock to the left and push the unit into the section until it
is in the desired position, then release the unit interlock.
3. For 1.0 space factor and larger units, place the unit on the unit support pan
and slide it into the section until it is flush with the front of the structure
and the power stabs are connected to the vertical bus.
ATTENTION: Plug-in MCC units can be heavy or awkward to handle. Use an
assistant or a platform lift device if necessary to help you handle the unit.
Bushing Slot
Unit Support Pan
Right Unit Guide
Left Unit Guide
Disconnected Position
Normal Operating Position
Unit devices have been
omitted for clarity.
IMPORTANT Note that there are two positions available (normal operating and
disconnected). In the normal operating position, the power and ground stabs
are connected to their respective busses. In the disconnected position, the unit
is partially removed from the MCC and the intermediate slot in the interlock
plate is in line with the bushing located in the unit support pan. When the unit
is locked in this position, the unit power and ground stabs are disengaged. This
position can be used to prevent insertion of a unit into the MCC.
ATTENTION: For proper operation of the latch/interlock mechanism, a style 3
unit-support pan with bushing must be used below the unit. If the unit support
pan with bushing is not used, the unit could be removed under load, resulting in
injury or death.
TIP Reposition your hands as necessary to properly support the unit while you are
installing the unit into the MCC.
TIP For Feeder units, you need to tilt the top of the unit slightly to the rear to avoid
interference with the top angle latch bracket. If you do not have enough
clearance, you need to loosen the angle latch bracket screw (approximately
two turns) to install the unit.