GEK-721 01, Low
V oltoge
Swifchgeor
ASSEMBLY OF
EQUIPMENT
(coni.)
14.
Install the breaker hoist. When supplied
with indoor
equipment,
this
is shipped
completely assembled in a sep-
arate carton. To install it, remove
the
lifting
plates
from
the front of the equipment. Lift the hoist into
position
on
top
of
the
switchgear
so
that
the end with the single
roller
is toward the
rear
of the equipment. A channel is
provided
on the top of the equipment
which serves as the track for
the single
wheel
on the
rear of the hoist assembly. If
space
is
available at the end of the equipment, the hoist may
be
assembled
by sliding
the
rear wheel under the top
leg
of
the channel and then
lifting the front end of the hoist over
the
stop clip and
positioning
the front wheels so that they
will
straddle the
tapered front track. If space
at
the ends
of the equipment is
restricted,
the
angle which is bolted to
the hoist side
frames immediately in front of the single
rear
roller must
be removed. The rear wheel can then be
hooked under the channel and
the front wheels
can
be
positioned
on the front track. The retaining angle
at
the
rear should then
be
reassembled.
Stop clips are
provided
at each end of the front
track to
prevent
the hoist from
riding
off the
ends
of the
track.
When a hoist is
provided
with outdoor equipment, it
is
shipped mounted and
secured in
place.
The
yellow
ship-
ping
supports
at either
end
of
the
hoist
movable track must
be
removed as shown in
Figure 14. To free
the
hoist
dolly,
remove
the wire that is
used to keep it in
place
during
shipment.
15. Before
placing
breakers in the equipment, check each
breaker
compartment for
bolted
joints
in the
primary
dis-
connect
bars.
Where
such
joints
exist, check
the
bolts for
tightness, Refer
to Table A for the
proper
torque values.
Also
check the contact
areas on each
primary
disconnect
bar or cluster
of fingers for foreign matter
that may have
accumulated.
Clean these areas if necessary.
Be sure
that
a thin film of
D50H47
grease
covers
the
contact
areas
before
putting
a breaker in the compartment.
Check to see that the
breakers
match
their respective
compartments. Each
breaker is assigned
a
part
or mark
number.
This number is
shown
on the
breaker sheets of
the
summary, the front view drawings, the breaker name-
plate,
ahd
on the identification card on the breaker ship-
^:-- ^^+^-
Prrrli
Lar Lwrr.
To locate
the breaker in the
proper
compartment, refer
to the breaker
location
list on the front
view
drawing.
Find
the
proper
breaker by the identification card on the breaker
carton, or the mark number on the breaker nameplate. All
identical breakers will
have the
same
mark number.
BREAKER INSERTION
Before
installing or operating a breaker,
refer
to the
breaker
instruction
manual for
preoperation
inspection and
test.
Check thoroughly for any
damaged
or loose
parts
and
for any dirt or foreign matter
which
may
be
in the breaker.
Be
sure that a thin film
of
D50H47
grease
is
present
on
disconnects
before
installine the breaker.
HOISTING
AND INSERTING AK BREAKERS
With the
inner housing
in the compartment in
the
CON-
NECTED position, proceed
as follows:
1. Put
the breaker in front of the unit in which
it is to
be installed.
Be sure it is tripped.
2.
Insert
handle on
jackscrew
shaft
located on left hand
side of compartment.
3. Rotate handle counter-clockwise
until
jackscrew
is
stopped.
(Indicator
should
read
DISC).
Inner
house
is now
in the DISCONNECTED position.
4.
Remove handle and
open
compartment door.
5. Rotate the
two track lock links and
pull
the right
track to the limit
of its travel. See Figure 16A.
6. Pay out
enough hoist cable to
place
the hooks
in the
slots
on the breaker side frames. See Figure 168.
CAUTION:
DO NOT UNWIND
CABLE COM-
PLETELY
FROM
DRUM.
OPERATING
CRANK
MUST TURN CLOCKWISE TO HOIST
THE
BREAKER, COUNTER.CLOCKWISE TO
LOWER IT.
7.
Place
the
cable
eye
just
under the ball nearest
the
hoist
(fourth
ball from the hooks) and
take
the
slack out
of the cable
with
the
hoist. See
Fieure
16C.
WARNING:
DO NOT
STATTD
UNDER BREAKER
DU
RI N
G
TlOlSTlNG
OPE RATION.
8. Raise the breaker until
the breaker
mounting
pins
are
approximately
one inch above the tracks. See Figure l6D.
9. Pull the remaining track
out to the limit
of its travel
and lower breaker so the
breaker mounting
pins
drop
into
the slots in the
track. Remove the liftins device.
See Fie-
ures 16E and F.
10. Push the breaker in against the track stops. Rotate
the two
track
lock
links to
lock
the breaker in
place.
Close
the compartment door. See Figure 16G.
11. Insert handle on
jackscrew
shaft and rotate clockwise
to move breaker into the compartment. Breaker is in CON-
NECTED
position
when
jackscrew
can
no longer be ro-
tated.
(Indicator
should read CONN).
'16
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