I.
(
R
e
f
e
r
to Figure 2)
Trip iatch
(216)
should
h
a
v
e
an
e
ng
ag
e
m
e
n
t of
.06211
plus
or
m
i
n u
s
.015"
on
t
r
i
p shaft
(
2
1
5
).
Measurement
is
m
a
de
with
the
l
a
t
c
h
re�ting
on
t
h
e
s�aft
in
the reset
position.
2 .
Main
Contact �ake
(
Ref�r
to
Fig�re 6)
Compression of
c
on
t
a
c
t
fingers (619)
should
be between .093"
ar.d
.125''. This
is
the
difference
in
the
m
e
a
s
u
r
eme
n
t
from
the
breaker
base to
the
c
e
n
t e r
of
t
h
e
finger
c
o
nt
a
c
t
surface
w
h
e
n
the
breaker
is
open
and
the
measurement
in the same
place
wnen
the breaker is
closed. Th!s
is
checked
with
a
n
o
rma
l
closing
operatic�
-
not
maintenance
closing.
Adjustment
is
provided
by positioning
screws
(603) after
loosening
n
u
t
s
(62 1).
Counterclockwise ro
t
a
tio
n
of
screws {608} in
c
re
a
se
s
compression.
Care
s
h
o
u
l
d
be taken to
re
tighten
nuts
(621)
after
adjustment.
If
it
is
d
e
s
i
r
e
d
to
check
contact
pressure,
a push-type
spring �cale
can
be
u
s
e
d
to cQncrcss
contact
fingers (619),
w
i
t
h
breaker open.
C
o
nt
ac
t
pressure
sho�ld
be
between 20 and
30
po�nds.
·
3.
Make (Refer
to
F
i
g
ur
e
6)
With movable
a
r
c
i
n
g
contact (620)
in
any
one phase touching
the
mating stationary
contact
when the
breaker
is closed by
the
main
te,ance
closing
method. (see
Table
3),
the
p
h
a
s
e
to
p
h
a
s
e
variation
should not
exceed
.062".
A
d
j
us
t
m
e
n
t
may
be
made
by positioning
screws (608)
as
In
p
a
r
a
g
r
a
ph 2, but it is
e
s
s
e
n
t
i
a
l
that
the
main
contact coo1pression
be
m
a
i
n
t
a
i
ned
within
the tolerance
l
i
s
t
e
d
in
paragraph 2.
Arcing contact
pressure
sho�ld
be between
30
and
40
pounds when
checked
w
i
t
h
a pull-type
spring scale
at
the
base
cf
the
a
r
c
i
n
g
contact t i p
insert
with
the breaker
c
o
n
t
a
c
t
s
closed.
4.
Electricalh,
ereakers (Refer
to
Figures
2A
and
3)
a)
..-iotor Cut-Off
Switch
and
i
i t ion Switch -
The!e
Sl·'ii tches are
mounted
on
a conmo11 bracket
that
Is set
and
rol
!-pinned
in position
d
u
r
i
n
g
prod�ction
t
es
t
in
g
.
J f
replace
ment is
required.
the
bracket must
be positioned
so
that
when
roll
pins (236) in
gear (235)
are
at the
top
position,
thev hdve
moved
plunger (233} against
the
roller
of motor
c
u
t
-
off switch
(232) to
shut
off
the
motor .
As
the
springs are charged.
drm
(231)
mvst
engage
the
roller
of
spring-position �witch
(230}.
Pi
lot
holes
arc
provi ded :n the
rno•>·lting
bracket
for
dri
II
ing
and
roll-pinr.ing
the
replaceme'1t
assembly
in
the
correct
pes
i t i on.
- a -
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