GE AK-1-15 Series - Page 12

rmc
.
i
GEH
-
1
C
07
Air
Circuit
Breakers
Typo
AIUl
-
15
and
AK
-
1
*
25
Stationary
Contact
(
8
)
Fig
,
4
0
DOWELS
1
,
Remove
arc
quencher
(
see
Replacements
"
under
Arc
Quencher
)
*
2
,
Remove
upper
stud
Cflp
(
f
!
>
)
by
removing
two
bolding
»
orew
»
T
3
,
3
?
ry
the
stationary
contact
(
3
)
from
upper
stud
(
20
)
*
On
CmtaidC
poles
,
thS
stationary
contacts
are
readily
accessible
*
On
the
center
polo
,
it
is
recommended
that
the
mechanism
bo
taken
off
the
breaker
to
facilitate
removal
of
the
contact
*
.
This
may
bo
done
by
following
stop
*
1
to
B
of
the
procedure
for
replacing
;
movable
contacts
*
4
,
Replace
the
new
stationary
contact
in
re
*
-
verse
order
,
(
It
may
be
necessary
to
tap
the
new
stationary
contact
into
placeoy
using
a
rawhide
mallet
)
.
5
,
Adjust
eoutact
wipe
and
contact
pressure
(
see
above
)
*
I
1
»
$
w
K
A
9
ffg
.
6
fhwovs
)
of
Stationary
Content
#
trip
devices
a
,
re
uejtu
&
ted
,
Lateh
adjusting
screw
(
9
)
limit
®
the
rotation
of
the
trip
fiilwift
(
12
)
and
thus
determine
!
!
the
Amount
of
latch
engagement
.
To
operate
i
the
breaker
mantutUy
pee
section
on
"
Operation
”
,
i
ADJUSTMENTS
,
FIG
.
JO
Latch
(
15
)
id
adjusted
to
provide
approximately
5
/
JW
"
engagement
between
latch
and
roller
(
6
)
,
To
adjust
for
proper
latch
engagement
,
follow
the
pro
-
cedure
described
below
:
1
.
loosen
Locknut
on
adjusting
screw
(
9
)
.
2
.
Hold
breaker
eontecte
in
a
position
in
which
the
movable
contacts
are
Just
touching
the
stationary
contacts
.
This
may
be
done
by
any
of
tlte
provided
means
of
manual
closing
,
3
.
Turn
down
adjusting
screw
(
9
)
until
breaker
«
trips
open
.
Normally
the
force
required
to
3
rotate
the
trip
shaft
is
small
enough
so
that
S
3
the
spring
on
the
buffer
paddle
(
10
)
is
not
noticeably
deflected
.
If
any
deflection
is
it
observed
!
|
While
turning
down
the
screw
,
back
off
screw
until
spring
returns
,
then
turn
w
down
Bedew
again
.
If
deflection
persists
,
w
check
trip
shaft
for
binds
.
E
4
.
Mark
position
of
5
.
Repeat
stops
2
and
f
rijj
*
7
Uoo
*
«
oinc
Lower
Mounting
Bolts
*
i
*
OPERATING
MECHANISM
WmiOUT
CLOSING
HANDLE
The
operating
uieclianlsm
,
see
.
Fig
.
10
,
Is
«
up
~
ported
between
two
molded
side
f
rames
in
front
Of
the
-
center
pole
unit
.
It
consists
of
a
toggle
linkage
(
19
)
,
crank
(
5
)
,
latch
(
IB
)
,
trip
shaft
(
12
)
,
roller
(
«
)
,
closing
links
(
1
)
,
and
armature
(
14
)
.
When
the
coil
(
a
)
ia
onorgisicd
it
pulls
armature
(
14
)
downward
,
which
,
through
closing
Zinks
(
1
)
,
causes
the
toggle
linkage
(
19
)
to
straighten
.
This
motion
causes
the
main
shaft
(
1
,
8
)
and
movable
contacts
to
move
to
the
closed
position
.
As
soon
a
the
toggle
linkage
is
straightened
the
prop
moves
on
top
of
prop
pin
(
20
)
and
roller
(
0
)
moves
on
latch
(
15
)
thereby
holding
the
mechanism
In
the
closed
position
.
Tlie
motion
of
the
prop
(
23
)
causes
switch
(
25
)
to
operate
,
thus
do
-
energteing
the
closing
coil
.
The
breaker
mechanism
is
tripped
by
rotating
the
trip
shaft
(
12
)
,
and
releasing
latch
(
15
)
which
toggle
linkage
to
collapse
,
tliereby
The
stop
nuto
(
13
)
should
be
adjusted
so
that
'
lowing
the
opening
springs
(
IV
)
to
push
the
main
there
is
appraidpmtely
.
1
/
16
"
clearance
between
jau
^
movable
C
<
:
mtacts
_
forward
to
the
open
the
bottom
Of
the
magnet
and
the
upper
stop
nut
.
position
.
Trip
latch
(
15
)
la
automatically
reset
This
will
restrict
linkage
movement
in
tripping
but
during
the
opening
operation
providing
none
of
the
allow
enough
movement
for
the
mechanism
to
reset
.
adjusting
screw
head
,
adjusting
screw
Axi
Won
.
"
!
j
6
.
U
adjusting
screw
is
in
tike
name
position
aa
it
was
in
;
tire
first
tripping
,
back
off
tiie
screw
9
*
UM
turni
?
AM
ttehtou
locknut
.
K
it
is
not
,
repeat
steps
ft
mi
$
until
a
constant
tripping
position
is
determined
before
back
*
*
ing
off
;
tlie
three
turns
and
locking
.
This
chock
it
?
necessary
to
avoid
a
false
netting
clue
to
accidental
tripping
*
7
.
Operate
the
breaker
electrically
times
to
I
make
sure
that
tlu
&
mechanism
functions
correctly
.
0
or
(
23
several
v
>
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