GE Magne-Blast AM-13.8-1000-3H - Primary Contact Wipe Adjustment; Arcing Contact Wipe Specification; Primary Contact Gap Adjustment; Trip Latch Wipe

GEE
-
88766
"
DO
NOT WORK
ON
EITHER
THE
BREAKER
OR
MECHANISM UNLESS
THE
CLOSING
SPRINGS
fftiARE
BLOCKED
AND
THE
OPENING
SPRINGS
HAVE
BEEN
TRIPPED
OPEN OR
MECHANICALLY
'
BLOCKED
,
THIS
MEASURE
IS
REQUIRED
TO
PREVENT
ACCIDENTAL
CLOSING OR
TRIP
-
PING
.
"
Primary
Contact
Wipe
When the
breaker
is
closed
*
as
shown
in
Fig
.
8
,
,
the
stationary
primary
contacts
(
l
)
should
rise
5
/
16
”
4
»
0
—
l
/
l
6
"
on
the
1200
A
,
breaker
and
1
/
4
'
V
0
“
l
/
l
6
ff
on
3000
A
breakers
, ,
Before
checking
this
dimension
be
sure
the
mechanism is
re
-
set
so
that
the
prop
pin
(
13
)
Fig
.
5
is
resting
p
on
the
prop
.
To
obtain
the
proper
contact
adjustment
*
open
the
breaker
wand
,
referring
to
Pig
.
9
>
loosen the check
nut
(
4
)
and
turn
the
adjusting
nut
(
3
)
.
Screwing
up
on
the
adjusting
nut
will
decrease the
primary
con
-
tact
wipe
,
down
will
increase
it
.
Tighten
the
check
nut
*
close
the
break
-
er
and recheck
the
wipe
.
With
the
primary
contact
wipe
correctly
adjusted
,
the
clearance between the
contact
arm
.
(
6
)
and
the
buffer
block
should
be
l
/
l
6
,
s
or
greater
(
as
shown
in
Fig
.
8
)
when the
breaker
is
fully
closed
.
Arcing
Contact
Wipe
Refer
to
Fig
.
8
»
Close
the
breaker
until
the
arcing
contacts
just
touch
.
This
can
be
determined
with
the
use
of
a
circuit
continuity
tester
such
as
a
light
indicator
or
bell
set
.
In
this
position
*
the
gap
between
the
stationary
primary
contacts
(
1
)
and the
movable
primary
contact
(
2
)
should be
5
/
l
6
"
or
greater
.
This
setting
has
been
made
in
the
factory
,
.
and
no
adjustment
is
provided
.
A
wipe
of
less
than
5
/
16
"
is
usually
an
Vindication
that the
arcing
contacts
need
to
be
replaced
.
When
making
this
check
*
also
see
that the
movable
arcing
contact
(
5
)
passes
between
the
sides
of
the
arc
chute
throat
without
touching
.
Primary
Contact
Gap
Refer
to
Fig
.
9
-
With
the
breaker
closed
*
press
the
manual
trip
button
*
allowing
the
breaker
to
trip
open
normally
.
Do
not
force the
contacts
open
wider
by
hand
.
The
gap
between
the
stationary
primary
contacts
(
5
)
and
the
movable
primary
contact
(
6
)
should be
5
-
1
/
45
/
1611
-
1
/
8
"
for
the
1200
A
breaker and
5
-
13
/
16
"
4
=
5
/
16
"
-
1
/
8
"
for the
3000
A
breaker
,
change
this
gap
*
loosen
the
check
nut
(
17
)
*
Fig
.
5
and
turn
the
adjust
-
ing
nut
(
18
)
on
stud
(
19
)
«
Screwing
the
adjusting
nut
down
will
decrease
the
primary
contact
gap
.
Tighten
the check
nut
and
re
-
measure
the
con
-
jjjjg
,
tact
gap
(
close and
trip
the
breaker before
checking
the
measurement
)
.
Trip
Latch
Wipe
TO
Refer
to
Fig
.
5
.
The
wipe
of the
trip
latch
(
8
)
on
the
trip
roller
(
9
)
should
be from
3
/
16
"
to
1
/
4
"
.
This
can
be
measured
by
putting
a
film
of
grease
on
the latch
(
8
)
*
closing
the breaker
part
way
*
and
tripping
.
The
mechanism
has the
proper
trip
latch
wipe
when the
latch
rests
against
the
stop
pin
(
23
)
.
No
adjustment
is
provided
and
a
visual
Inspection
is
usually
all that
is
required
.
If
this
setting
is
not
correct
*
look
for
insufficient
travel
of the
trip
shaft
(
7
)
.
ft
7
Courtesy of NationalSwitchgear.com