GE AK-1-15 Series - Page 13

-
U
V
.
1
J
nVHL
-
.
Air
Circuit
Breakers
’
i
'
yjpo
AK
-
l
~
i
5
and
AK
>
3
U
28
GEH
|
-
1807
!
i
Opening
Springs
(
17
)
Fig
*
10
or
(
10
)
Fig
,
11
REFIACEMJENTS
,
FIG
*
10
;
;
V
;
schaniem
Opening
ftaringa
may
be
replaced
by
following
me
first
two
steps
of
the
procedure
for
replacing
1
,
Remove
arc
quenchers
(
see
"
Replacement
"
the
movable
contact
assembly
,
under
f
,
Aro
Quencher
0
)
*
'
2
-
Remove
escutcheon
(
4
)
r
3
,
If
breaker
is
supplied
with
a
terminal
block
,
dismount
block
by
removing
two
screws
in
back
which
fasten
it
to
the
(
supporting
bracket
.
4
.
Remove
shunt
trip
supporting
bracket
by
hiking
out
the
two
screws
which
fasten
it
to
the
mechanism
side
frame
.
The
nuts
for
these
screws
are
loosely
held
in
the
recesses
on
the
Inner
side
of
the
frame
*
If
breaker
is
su
>
implied
with
an
under
voltage
device
,
also
will
be
dismounted
nines
it
is
held
by
the
same
supporting
bracket
.
5
*
If
breaker
is
supplied
with
a
closing
switch
,
dismount
Switch
base
by
removing
two
screws
(
10
)
,
Fig
,
14
.
0
.
Remove
solenoid
control
device
7
,
Remove
X
contactor
and
.
Y
relay
together
,
first
removing
two
screws
securing
Y
relay
to
arm
which
projects
from
magnet
,
then
loosening
th
©
three
screws
which
fasten
the
X
contactor
to
the
supporting
arms
,
Roth
devices
can
then
removed
by
lifting
slightly
and
moving
towards
front
of
breaker
.
6
.
Remove
stop
nuts
from
armature
plunger
(
13
)
,
Fig
.
10
,
.
9
.
Remove
lower
section
of
magnet
and
closing
coil
by
taking
out
four
screws
(
7
)
*
10
,
Remove
upper
sectioti
of
magnet
by
taking
out
two
screws
which
fasten
it
to
media
-
nism
side
frames
*
(
See
Fig
,
(
I
)
.
11
-
Remove
auxiliary
switch
by
taking
out
bolt
(
1
)
and
screw
(
4
)
,
Fig
.
13
,
12
.
Remove
cutoff
switch
(
25
)
by
removing
lock
-
nuts
(
24
)
.
IB
.
Remove
tru
~
a
.
ro
smd
take
out
main
shaft
(
18
)
.
being
careful
not
to
lose
opsuing
spring
(
:
L
7
)
and
cap
which
may
pop
out
when
main
shaft
is
re
moved
.
14
.
Take
off
mecjhanteni
by
removing
mounting
screws
from
mechanism
frame
.
15
.
Mechanism
may
now
be
rplaced
ara
a
unit
or
disassembled
and
then
reassembled
with
new
parts
as
needled
,
16
.
Reassembly
of
the
breaker
is
accomplished
by
reversing
the
procedure
described
.
In
replacing
the
mechanism
,
make
sure
that
the
dowels
on
the
mecimnism
side
frames
are
properly
seated
in
the
dowel
holes
in
the
pole
unit
base
}
alno
that
tine
opening
springs
!
and
caps
are
positioned
properly
placing
the
main
shaft
17
.
Adjust
prop
switch
as
described
under
"
Ad
~
juBtamnte
0
in
“
Monoid
Control
System
*
’
and
check
operation
of
breaker
manually
and
electrically
.
tide
cover
.
s
3
*
*
»
r
?
*
510
-
8
01
fcPSQHniJflfl
Uppar
Section
of
Magnet
lr
WITH
CU
)
mm
HANDLE
,
FIG
.
n
i
The
electrically
operated
mechanism
equipped
with
a
manual
operating
lumdle
is
shown
In
Fig
,
11
.
This
mechanism
is
similar
to
the
one
furnished
without
an
optaiting
handle
with
the
following
ex
-
ceptions
:
j
a
.
There
iM
only
one
stop
nut
(
11
)
on
the
lower
end
of
(
he
rod
extending
from
the
armature
(
12
)
nhide
there
Is
no
need
to
provide
for
operatiwj
by
the
maintenance
handle
,
b
.
The
mechanism
which
is
furnished
with
an
operating
handle
contains
a
cam
support
(
7
)
and
cam
(
6
)
,
(
sec
Fig
,
11
)
,
whereas
the
v
,
meolmuifun
furnished
without
an
operating
NOTE
:
If
a
reasonable
amount
of
care
is
handle
oontniim
neither
of
these
parte
,
exercised
,
wiring
lead
connection
*
will
not
bo
|
f
overstressed
and
need
not
be
dteconncctod
in
the
The
sequence
for
electrical
operation
is
the
•
^
urse
of
the
disassembly
procedure
*
The
electrical
same
as
given
-
frir
the
mechanism
furnished
without
.
;
lessories
may
be
tied
up
out
of
the
way
of
the
an
operating
Ixancfle
*
(
Refer
to
the
second
paragraph
wpewitor
.
K
leads
*
xv
disconnected
.
,
they
should
be
under
*
"
Operating
tfechAntem
-
Without
Casing
marked
to
avoid
incorrect
reconnection
*
lihmdlH
-
'
•
1
&
whew
ro
-
•
13
Courtesy of NationalSwitchgear.com