9.
Install aisle floor plates in the same manner as for single
aisle layouts.
10. Install roof support (item 78) from cubicles to end of work
space area.
11. Put all roof decks in place and bolt to the top of the end
plate and to the roof support. Leave hardware finger tight
until step 13 is complete.
12. Fasten roof decks together with 3/8” hardware.
13. Mount trim angle. Tighten all hardware.
14. Set roof channels over roof deck joints, bolt to clips welded
to roof with retainer nuts.
15. Mount aisle conduit, switches, receptacle and wire to the
junction boxes. See conduit arrangement.
16. If equipment consists of more than one shipping group,
caulk each vertical shipping split at the back of the
switchgear with metal filler provided.
Expanding Length of Existing Shelter-Clad Switchgear by
Addition of Units
The new extended foundation, be it slab, pier or pilings, must
be constructed in the same careful manner as described under
“Outdoor Foundations”. The new foundation must be level and in
the same plane within 0.06” (1.6mm) as the existing foundation.
Certain items will be removed from the existing installation as
described in the following instructions. Remove these items care-
fully and store them for re-mounting in the expanded setup.
1.
Remove the channel-shaped covers over roof joints from
both aisle and switchgear unit.
2.
Remove the trim angle from the outer edge of the roof
deck.
3.
Remove the back plates to provide access to the hard-
ware securing the end cover. Remove the end cover with
associated parts and save for later re-installation.
4.
Disconnect aisle conduit.
5.
Remove all hardware securing the side plate to the
switchgear frame and hardware securing aisle end plate
to the aisle wall. It may be necessary to tap a knife blade
down the vertical seam between the aisle wall and the
end plate to cut the caulking. Remove the side plates
from both switchgear and aisle.
6.
The lineup is now ready for installation of the new unit or
units. If the foundation was carefully constructed there
should be no problems with lineup of the base or match-
ing the level of existing equipment.
7.
With new units in true alignment with existing and properly
leveled, bolt units together with 1/2” hardware provided.
8.
Run aisle wiring from the terminal block in existing end units,
through the barrier and header to the junction box area.
9.
Mount other parts removed from existing equipment and
caulk all external seams with metal filler.
10. Make all electrical connections as instructed in installation
manual or shown on drawings.
11. Caulk each vertical split at back of switchgear between the
existing equipment and the new addition with metal filler.
Replace bus compartment barriers and install back plates.
Anchoring, Leveling, and Assembling Conventional
Outdoor (Non-Walk-In) Switchgear
In conventional outdoor (non-walk-in) arrangements the
switchgear (as shipped) is true and in correct position relative
to its support base. The formed floor base sections are a per-
manent part of the switchgear, and are not to be loosened or
moved from position.
Verify the anchor bolt locations in the concrete and all points
shown in the general arrangement plan view. Sweep the foun-
dation to make certain it is free of pebbles and other debris.
Check the general arrangement drawing for positioning of the
switchgear and sequence of installation if arrangement con-
sists of more than one shipping group.
1.
Remove nuts from all anchor bolts, remove caps from all
secondary conduit stubs, and remove covers from secondary
openings in cubicle floor plates.
The arrangement may consist of a single complete shipping
group, or may be split into a number of shipping sections
for a long lineup. Refer to the general arrangement drawing
for instructions as to which shipping group should be
installed first, and in what sequence the remaining groups
are to be installed. Move the first group into position as
shown on the general arrangement drawing.
Note:
Place lift truck (if supplied) for upper cell breakers
inside the aisle enclosure before installation of the last door
assembly to the enclosure. The lift truck is wider and higher
than the hinged aisle door opening, which prevents convenient
entrance of the lift truck if the door assemblies are in place.
Installation
17
DANGER
Hazardous voltages and high-speed moving parts.
Will cause death, severe personal injury or
property damage.
Do not work on energized equipment. Always de-
energize and ground the equipment before work-
ing on the equipment.
