Allis-Chalmers LA-1600, Instruction Book

Page: 4 / 100

IN!..>
I
i"UCT
I C>NS
FOR THE INSTALLATION
At-lD
OPERATION
OF ALLIS-CHALMERS TYPE
11LA11
LOW VOLTAGE AIR CIRCuiT BREAKERS
AND
AUXILIARY
SECTION INSTALLATION
.l\ND
INS?ECTION
A.
The type
11LA11
a
i
r circuit breakers may
be furnished for
mounting in any
one
of
t
h
r e
e ways. They
m
a
y be used
In metal enclosed switch­
gear of the drawout type,
in i n d
i
vidu
a
l
enc losures (pullout t
y
p e
),
or for
s
t
ati
o
n
a r
y
mounting in a
c
u
s
tom er
'
s
own
e n cl o
s
i n
g
case
or s
w i
t
c
h b o a
r
d
.
All
"LA" b
r e
a
k
e
r
s are
completely
a
s
se mb le
d
,
tested,
and calibrated
at
the factory
in
a
v
e
r
t
i
c
a
l
position
and
must be
s o installed to operate
properly.
Cust�1er1s
p
r
im a
r
y connections should be adequately braced
a
g
a
i
n
st
the
effects of
short
circuit
c
u
rre
nts
to p
r
e
ven
t
overstressing
the breaker terminals.
8.
\.IARRANTY A
l
l
i
s
- Ch
a
l
mer s
11LA11
air
c irc
ui
t breakers are
warranted to
be
free
of d ef e
c
t
s
In m
a
te r
i
a
l and workmansh ip for a
period of
one ye
a r after
delivery
to the o
r
i
gi
n
a
l
purchaser. This
wa
rra
n
t
y is
l
i
m
i
t
e d
to t
he f ur
n i s h i n g
of
any part which to
ou r
satisfaction has b e
e
n
proven
defective. Allis­
Chalmers
will
not In any case assume
respon sibi 1 1
ty f o
r allied
e q
u
i pme n
t
of
any
kind.
C.
AND INSPECT:ON FOR DAMA�E
I
mm
e
d
i
at
e
ly
upon
rec
e i
pt
of this
e
q
u
i
p
me
nt
,
carefully remove
all
packing
traces
and examine parts,
ch
e c
k
i n g
them
a g ai
n
s t
th
e p a
c
k
i
ng llst and
n
o t i ng
any
dam a g
e
s
incurred in
transit. If such
is d
i
s
clo
s
e
d
,
a
d
a
m
a g
e
claim should be fi
Jed
at
once with the
transportation
compg n
y
and Allis-Chalmers notified.
0 .
CAUTIONS TO BE OBSERVED IN THE INSTALLATION
AND CPE'RAT:O� CIRCUIT BREAKERS
I .
f3!ll_l
ns t
r�.:c:
t Book before
ins
ta
11
i ng or makl
ng
any
changes or
adjustments on the breaker.
2 .
A
s
the closing
s
p
r
in
gs o n stored-energy
breakers may b e
charged In
ei
t
her the breaker
open or closed position, extreme care
should
be
taken to
dis c
h
a
r
g
e
the
s
p
ri
ng
s
before
w
o r
k
in
g
on
t
h
e
breaker.
3.
When
c
l
o sing
manually-operated breakers, always
grasp
closing
handle
firmly
unti
I it is returned to
the normal
v
ert
i
c
a
l
p
o
s
it i
o
n
.
4. Check current ratings and serial numbers
against single line diagram
to assure
that
breakers are properly
l
o c
a
t ed
in
switchgear at
installation.
5.
Check
the alignment
of
the se
co
n
d
ar y
disconnect f
i
n
g
e
rs to
ensure
against
m
i
s
a
l
i
g
n
m
e
n
t due
to possible di
s
t
or
t
i
o
n
of
f
i
n
ge
r
s during
s
h
i
p
m e
n
t and hand!
ing.
6.
Once the breaker
I
s
energized, It should
not be
touched,
exc
e
p
t
for
operating,
since most· of
t h
e
component part$
are also energized.
- I -