Evolution Series E9000 User Manual
17
Use the following procedure to install a motor control
center unit:
1. Attach the door hinges to the left side of the
section, line up the door with the hinges, then insert
the hinge pins to secure the door. (For Type 12
enclosures, mount the gasket on hinge side. See
Figure 23.)
2. Start 1/4-20 thread rolling screw in left hinge rail
just below the location for the shelf shown in
Figure 24.
3. At the same time, hook the shelf into the rear wing
plate and onto the started 1/4-20 screw from
step 2.
4. Snap the shelf into the shelf support on the vertical
wireway side of the case and tighten the 1/4-20
screw from step 2.
5. Lower the right side of the shelf and snap the two
detents in the right-side flange into the two holes
in the side of the vertical wiring trough barrier, as
shown in Figure 24. Swivel the shelf hold-down
bracket and grounding spring into place and tighten
the lower case hinge.
6. Examine the new unit carefully, front and rear, to
ensure that all screw terminals are tight, all foreign
material and packing are removed, and the insulating
barriers are secure.
7. The unit disconnect must be in the OFF position
before the unit can be inserted into the vertical
section.
8. If necessary, rotate the latches at the top and
bottom of the unit so that they are horizontal.
9. Remove the snap-in cover over the vertical bus
stab-in openings at the appropriate installation
location for the unit to be installed.
10. Lift the unit and place its base on the front horizontal
surface of the snap-in shelf.
11. Slide the unit into the vertical section, then push
at the top and bottom until the stabs are fully
engaged with the vertical bus.
12. Rotate the latches at the top and bottom of the
unit clockwise to engage the latches with the
horizontal shelves above and below the unit.
See Figures 25 and 26.
13. Verify the operation of the disconnect handle and
safety interlocks, as described later in this manual.
2
3
4
Figure 24. View of the snap-in shelf as installed
Figure 25. Unit disconnect in the OFF position. Two quarter-turn
door latches are located at the top.
Figure 26. Quarter-turn latch located at the bottom of the unit
Latches
