Advertisement
R E L I A G E A R LV M C C LO W V O LTA G E M OTO R C O N T R O L C E N T E R
26
—
Use the following procedure to install a motor
51
control center unit:
View of the snap-in
shelf as installed
1. Attach the door hinges to the left side of the
—
section, line up the door with the hinges, then
52
insert the hinge pins to secure the door. (For
Unit disconnect in
the OFF position. Two
Type 12 enclosures, mount the gasket on hinge
quarter-turn door latches
side. See Figure 50.)
are located at the top.
2. Start 1/4-20 thread rolling screw in left hinge
—
53
rail just below the location for the shelf shown
Quarter-turn latch
in Figure 51.
located at the
bottom of the unit
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 51. 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 54 and 55.
13. Verify the operation of the disconnect handle
and safety interlocks, as described later in this
manual.
2
3
—
51
—
52
—
53
4
Latches
Advertisement
