7
I.B. 8926-1A
access to the bolts, and eliminates the need to
remove the horizontal bus barriers in that
structure. Should the existing bus be oxidized,
sand lightly with a fine aluminum oxide paper.
CAUTION – Do not use emery cloth or any
abrasive containing metal.
3.
Remove the upper horizontal wireway door from
the structure on the right side of the left-
hand(LH) section and remove the two-piece
wireway barrier to provide access to the ends of
the bus in that section.
4.
Move the section in place, aligning the upright
structural channels and bottom channels.
Alignment of the section with floor sills and
foundation provisions will be facilitated by
removing the bottom horizontal wireway doors.
Using the “U” type frame clamps provided,
clamp adjacent front upright channels together
at the top, bottom and approximate center of the
vertical structure. This operation will be
facilitated by removing the vertical wireway
doors from the left-hand structure and one or
more
drawout units from the right-hand
structure. See Part 9.
5. If rear access is available, “U” clamps should
also be used to clamp the rear upright channels
together. In front-mounted-only structures this
will require removal of the adjacent back sheets.
In a back-to-back mounted structure, remove the
vertical wireway doors and one or more drawout
units as above.
6. Secure the sections to the floor sills or mounting
bolts as provided for the installation.
7. Bolt the horizontal bus splice plates to the bus in
the left-hand structure, torquing all bus splice
bolts to 360 pound-inches (30 pound-feet). See
Figure 5.
8. Replace all unit, bus barriers, and doors.
JOINING INCOMPATABLE SECTIONS
Joining a Freedom 2100 Motor Control Center to
other equipment such as Type W and 11-300
Control Centers will usually involve a transition
section, installed between the two varieties of
equipment. This transition section will be detailed on
drawings provided by Cutler-Hammer and the
applicable contact drawings. If provided separately,
it should be installed first. Review the overall
installation task to determine whether the transition
section should be attached to the existing equipment
or to the Freedom 2100 section, before it is moved
into place, and select the sequence which will
provide best access to bus splicing and joining of the
structures.
Figure 4 Splice Plates Attached to RH Section
Figure 6 Single Bar Splice Kit
