GE Limitamp CR194 - Controller Reassembly Procedures; Replacing Contactor in Enclosure

CM
94
Vacuum
Li
mi
tamp
400
Ampere
Control
Control
wires
coming
up
through
the
floor
should
be
run
just
behind
the
door
hinges
inside
the
channel
(
see
Figure
47
)
provided
for
this
purpose
and
the
wires
should
be
terminated
on
the
terminal
board
in
the
low
-
voltage
compartment
.
Control
wires
entering
from
the
top
of
the
enclosure
should
also
be
run
in
the
channel
provided
just
behind
the
low
-
voltage
door
hinges
and
terminated
on
the
terminal
block
.
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8
Reassembly
After
all
power
and
control
-
wire
connections
are
made
,
the
Vacuum
Limitamp
controller
must
be
reassembled
by
following
the
sequence
on
pages
13
and
14
in
reverse
order
.
If
the
controller
is
enclosed
in
a
NEMA
type
3
enclosure
,
refer
to
Figure
51
for
assembly
instructions
.
Npte
:
Do
not
attempt
to
operate
without
all
barriers
reassembled
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Replacing
Contactor
In
Enclosure
When
replacing
the
contactor
in
the
enclosure
,
the
following
procedures
should
be
followed
:
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1
o
.
#
e
400
-
Ampere
Contactor
1
.
Before
installing
the
coxitactor
,
ensure
that
the
cables
attached
to
the
line
side
of
the
contactor
are
properly
tightened
to
35
lb
-
ft
.
2
.
Remove
the
three
bus
bar
bolts
that
were
placed
in
position
during
contactor
removal
arid
slide
the
contactor
onto
its
mounting
base
and
ensure
that
the
retaining
studs
protrude
through
the
front
of
the
contactor
side
bars
.
Also
ensure
that
the
armature
interlock
is
properly
engaged
in
the
interlock
pawl
on
the
lower
-
right
side
wall
.
(
See
Figures
17
and
25
)
Note
:
This
mechanism
transmits
the
contactor
armature
motion
to
the
mechanical
interlock
and
it
is
vital
that
this
mechanism
function
properly
.
3
.
Install
and
tighten
the
three
load
-
side
connection
bolts
.
See
Figure
29
.
Caution
:
Be
absolutely
certain
that
these
bolts
are
properly
in
-
stalled
and
tightened
.
These
are
current
carrying
connections
and
must
be
tight
or
damage
will
result
.
These
connections
must
be
tightened
to
16
lb
-
ft
.
See
Figure
29
.
4
.
Install
the
mounting
nuts
on
the
retaining
studs
on
each
side
of
the
contactor
and
tighten
.
5
.
Attach
the
line
cables
to
the
bottom
of
the
fuse
assembly
.
Be
absolutely
certain
that
these
connections
are
properly
tightened
to
9
lb
-
ft
.
See
Figure
48
.
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;
T
ft
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i
:
Figure
48
.
Line
connection
bolts
for
400
-
ampere
contactor
.
Warning
:
Make
certain
that
all
barriers
are
replaced
and
bolted
tightly
into
position
.
Make
sure
the
line
and
load
side
termina
-
tions
of
the
contactor
are
tightened
properly
.
Failure
to
perform
these
operations
could
result
in
failure
of
the
unit
to
operate
safely
and
reliably
.
Mechanical
Operation
Check
All
Power
Off
With
the
main
incoming
power
removed
,
operation
of
the
isolating
switch
should
be
checked
.
This
may
be
accomplished
as
follows
:
1
.
With
the
high
-
voltage
door
open
(
and
power
discon
-
nected
)
push
in
the
door
-
operated
release
(
A
)
,
Figure
49
,
with
your
left
hand
.
This
is
not
a
normal
function
and
should
only
be
used
for
initial
equipment
check
out
.
2
.
Push
in
the
handle
latch
release
(
B
)
,
Figure
49
,
with
the
thumb
of
your
right
hand
and
lift
the
handle
(
C
)
in
a
rapid
,
positive
motion
from
the
OFF
to
the
ON
posi
-
tion
.
The
door
operated
release
(
A
)
can
now
be
6
.
Manually
operate
the
contactor
armature
and
observe
released
.
Near
the
top
of
the
handle
movement
a
sharp
that
the
mechanical
interlock
functions
properly
.
If
so
,
snap
should
be
heard
and
the
isolator
switch
contacts
the
contactor
is
properly
installed
.
should
be
in
the
closed
position
.
The
contacts
may
be
viewed
by
looking
through
the
window
supplied
in
the
main
fixed
barrier
.
The
contacts
should
be
fully
seated
on
all
three
phases
.
The
handle
latch
release
(
B
)
,
Figure
49
,
should
pop
fully
out
at
the
top
of
the
handle
travel
(
See
Figure
57
)
.
7
.
Reconnect
the
control
umbilical
cord
to
the
contactor
and
be
sure
the
retaining
wing
nuts
are
tight
.
Installation
of
the
contactor
is
now
complete
.
24
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