GE ML-14-0 User manual

INSTRUCTIONS
GEK
7153
c
SUPERSEDES
GEK
-
7163
F
SPRING
-
CHARGED
OPERATING
MECHANISM
t
TYPE
ML
-
14
-
0
r
.
i
FOR
&
<
OIL
-
BLAST
CIRCUIT
BREAKERS
!
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CONTENTS
Introduction
.
.
Receiving
,
Handling
and
Storage
,
.
Description
.
.
.
Installation
.
.
.
Operation
.
.
.
Maintenance
.
.
Replacement
Parts
3
)
3
3
5
22
25
33
;
GENERAL
ELECTRIC
Courtesy of NationalSwitchgear.com

GEK
7153
Spring
-
charged
Operating
Mechanism
Type
ML
-
14
-
0
*
—
——
—
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08
ER
CIRCUIT
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REFER
TO
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PURCHASERS
WIRING
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Close
Control
Power
-
Fused
Disconnect
Switch
Heater
Power
-
Fused
Disconnect
Switch
Trip
Control
Power
-
Fused
Disconnect
Switch
Recloser
Cut
-
out
Switch
Oil
Circuit
Breaker
8
C
Permissive
Control
Switch
Opened
by
manual
tripping
device
on
the
mechanism
-
Hand
Reset
to
Close
ACR
Recloser
Interlocking
Relay
and
Contacts
for
79
Recloser
Timing
Motor
Clutch
Release
Unit
and
Contacts
for
79
Anti
-
pump
Unit
and
Contacts
for
79
69
8
H
8
T
79
E
?
?
43
A
M
i
52
R
V
Normally
Open
Auxiliary
Switch
-
Open
when
52
is
open
Normally
Closed
Auxiliary
Switch
-
Closed
when
52
is
open
Closing
Coil
Control
Switch
Z
a
•
•
ft
i
b
CC
cs
CL
/
MS
Closing
Latch
Monitoring
Switch
lc
Trip
Latch
Checking
Switch
M
Spring
-
charging
Motor
SM
/
LS
Limit
Switch
for
Spring
-
charging
Motor
TC
Trip
Coil
FU
Fuse
Green
Indicating
Lamp
Heater
Resistor
Red
Indicating
Lamp
Protective
Device
G
HTR
RES
R
Anti
-
pump
Auxiliary
Relay
Y
PD
Fig
.
1
Typical
Connection
Diagram
Breaker
Position
-
Open
Closing
Springs
—
Discharged
(
For
actual
wiring
see
connection
diagram
furnished
with
equipment
)
u
2
Courtesy of NationalSwitchgear.com

SPRING
-
CHARGED
OPERATING
MECHANISM
TYPE
ML
»
14
~
©
INTRODUCTION
operating
equipment
are
enclosed
in
a
weatherproof
housing
designed
for
mount
-
ing
on
the
front
end
of
the
breaker
.
D
-
c
voltage
is
required
for
the
control
circuit
.
OPERATION
.
The
following
instructions
A
-
c
voltage
is
recommended
for
the
will
provide
information
for
placing
the
spring
-
charging
motor
and
required
for
mechanism
and
breaker
in
service
and
for
the
heater
circuits
.
Since
the
control
the
necessary
maintenance
.
It
should
be
circuit
requires
very
low
operating
cur
-
kept
in
mind
that
the
illustrations
in
the
rents
,
the
.
necessity
for
large
storage
instruction
book
are
for
illustrative
pur
-
batteries
or
rectifiers
is
eliminated
,
poses
and
may
not
always
be
an
actual
Batteries
are
recommended
for
the
d
-
c
picture
of
the
equipment
being
furnished
,
source
.
The
mechanism
and
its
accessories
For
final
information
always
refer
to
the
will
operate
at
the
standard
ANSI
voltage
drawings
that
are
furnished
separately
ratings
.
The
breaker
nameplate
is
with
the
equipment
.
For
additional
mounted
on
the
inside
of
the
front
door
of
the
mechanism
housing
.
PROPER
INSTALLATION
AND
MAINTENANCE
ARE
NECESSARY
FOR
CONTINUED
SATISFACTORY
The
Type
ML
-
14
-
0
operator
is
a
spring
operated
mechanism
for
outdoor
oil
-
blast
circuit
breakers
.
It
is
designed
for
high
speed
operation
during
the
circuit
breaker
interruption
of
faults
and
high
speed
reclosing
.
It
is
mechanically
trip
-
free
and
non
-
pumping
when
closed
on
short
circuits
.
Its
high
speed
characteristic
is
the
result
of
a
simple
,
ingenious
,
rugged
linkage
design
having
low
-
friction
bear
-
ings
.
instructions
on
the
circuit
breaker
,
refer
to
the
breaker
instruction
book
.
mechanism
and
associated
The
RECEIVING
,
HANDLING
AND
STORAGE
Each
mechanism
is
carefully
in
-
removed
carefully
using
a
nail
puller
,
to
prevent
rusting
.
If
stored
for
any
spected
and
packed
by
workmen
exper
-
Check
all
parts
against
the
packing
list
to
length
of
time
,
periodic
inspections
fenced
in
the
proper
handling
and
packing
make
certain
that
no
parts
have
been
should
be
made
to
see
that
corrosion
has
of
electrical
equipment
.
Immediately
overlooked
while
unpacking
.
Always
not
taken
place
and
to
insure
good
mech
-
upon
receipt
of
a
mechanism
,
an
examin
-
search
the
packing
material
for
hardware
anical
condition
.
If
possible
,
the
space
ation
should
be
made
for
any
damage
that
may
have
loosened
in
transit
,
sustained
during
shipment
.
If
injury
or
rough
handling
is
evident
,
a
damage
claim
should
be
filed
with
the
transportation
company
,
and
the
nearest
General
Elec
-
in
the
proper
location
immediately
,
and
it
trie
Apparatus
Sales
Office
should
be
is
necessary
to
store
the
equipment
,
it
under
unfavorable
atmospheric
condi
-
promptly
notified
.
©
heater
should
be
energized
to
prevent
moisture
condensation
inside
the
mech
-
anism
housing
.
If
the
mechanism
cannot
be
installed
Should
the
mechanism
be
stored
should
be
kept
in
a
clean
,
dry
place
pro
-
tions
,
steps
should
be
taken
to
dry
out
tected
from
mechanical
injury
.
Machined
the
mechanism
before
it
is
placed
in
The
crating
or
boxing
must
be
parts
should
be
coated
heavily
with
grease
service
DESCRIPTION
located
a
motor
for
charging
the
closing
springs
,
closing
spring
’
s
operating
mech
-
The
control
house
for
this
mech
-
anism
,
auxiliary
switch
and
the
control
anism
is
a
steel
weatherproof
house
panel
with
its
relaying
,
operating
and
which
contains
a
felt
strip
as
a
sealant
control
switches
and
BCT
terminal
around
the
doors
.
Inside
this
housing
are
boards
.
The
ML
-
14
spring
-
charged
operator
consists
of
motor
operated
closing
springs
with
the
associated
mechanism
and
control
equipment
.
The
unit
is
designed
to
operate
large
outdoor
oil
circuit
break
-
ers
with
provision
for
closing
,
opening
,
trip
-
free
and
reclosing
operations
These
instructions
do
not
purport
to
cover
all
details
or
variations
in
equipment
nor
to
provide
for
every
possible
contingency
to
be
met
in
connection
with
installation
,
operation
or
maintenance
.
further
information
be
desired
or
should
particular
problems
arise
which
are
not
cove
2
:
ed
sufficiently
for
the
purchaser
’
s
purposes
,
the
matter
should
be
referred
to
the
General
Electric
Company
.
©
Should
To
the
extent
required
the
products
described
herein
meet
applicable
ANSI
,
IEEE
and
NEMA
standards
;
.
but
no
sticb
assurance
is
given
with
respect
to
local
codes
and
ordinances
because
they
vary
greatly
.
3
Courtesy of NationalSwitchgear.com

GEK
7153
Spring
-
charged
Operating
Mechanism
Type
ML
-
14
-
0
-
-
53
'
'
I
MULTI
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-
7
9
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s
ON
5
s
GO
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N
ob
E
23
.
Closing
Latch
Monitoring
Switch
Operating
Lever
Manual
Close
Push
Rod
Button
Eccentric
Manual
Charging
Stud
(
5
/
8
inch
hex
)
Driving
Link
Right
Closing
Spring
Breaker
Nameplate
Current
Transformer
Nameplate
Driving
Chain
Heater
Charge
-
discharge
Indicator
Window
Closing
Spring
Blocking
Device
Operation
Counter
Trip
Coil
(
52
TC
)
Operation
Counter
Window
Lock
-
out
Switch
(
69
Device
)
Bushing
Current
Transformer
Terminal
Boards
Manual
Trip
Lever
Trip
Latch
Roller
Manual
Trip
Push
Button
Ratchet
Wheel
13
.
1
.
House
Support
Bracket
2
.
Breaker
Vertical
Operating
Rod
3
.
Auxiliary
Switch
4
.
Output
Crank
5
.
Prop
Reset
Spring
6
.
Trip
Latch
7
.
Charge
-
discharge
Indicator
8
.
Guide
Block
9
.
Motor
Limit
Switches
10
.
Latch
Checking
Switch
11
.
Spring
-
charging
Motor
12
.
Left
Closing
Spring
14
.
24
.
15
.
25
,
16
.
26
.
17
.
27
.
28
.
18
.
29
.
30
.
19
.
31
.
20
.
32
.
21
.
33
.
22
.
i
Fig
.
2
Front
View
of
Mechanism
4
Courtesy of NationalSwitchgear.com

Spring
-
charged Operating
Mechanism
Type
ML
-
14
-
0
GEK
7153
Remove
the
wax
NOTE
:
paper
strips
which
are
be
-
tween
the
door
jam
and the
doors
of
the
control
house
is
either
ac
or
d
-
e
,
but
preferably
a
-
c
.
when
in
use
.
NEVER
AT
-
TEMPT
SLOW
MANUAL
CLOSING
WITH
THE
BLOCKING
DEVICE
IN
PLACE
AND
THE
BREAK
-
ER
IN
SERVICE
.
OPERATE
SLOWLY
AND
MANUALLY
ONLY
WHEN
THE
BREAK
-
ER
HAS
BEEN
COMPLETE
-
LY
DEENERGIZED
AND
ISOLATED
.
f
)
Also
provided
on
the
equipment
is
a
manual
trip
device
.
This
consists
of
a
mechanism
for
manually tripping
the
breaker
and
a
lock
-
out
switch
for
opening
the
closing
circuit
,
io
prevent
the
breaker
from
closing
from
a
remote
source
when
it
is
tripped
by
this mechanism
locally
.
before
energizing
the
heater
.
These
strips
are
for
paint
pro
-
tection
during
shipment
and
will
not
make
a
good
weather
seal
if
left
in
place
.
Control
voltages
are
given
on
the
nameplate
.
The
motor
operating
voltage
NOTE
:
This
mechanism is
designed
for
electrical
closing
INSTALLATION
During
the
installation
of
the
mech
-
obtain
the
correct
alignment
of
the
ver
-
anism
,
it
is
necessary
to
make
reference
tical rod and
its
cover
pipe
,
to
the
instruction
book
for
the oil circuit
breaker
that
it
operates
.
Use
control
wiring
of
adequate
size
so
that
with full
operating
current
flow
-
ing
to
the
operating
mechanism
,
the
voltage
across
the
terminals
of
tire mech
-
anism
will
be within
the limits
specified
as
standard
for
the
range
of
control
voltage
.
Raise
the
mechanism
with
a
crane
and
align
the
mounting
stud
holes
in
the
The mechanism
and
housing
are
mechanism
housing
to
those
on
the
normally
shipped
fastened
directly
to
the
breaker framework and
insert
the
studs
,
frame
of
the oil
circuit
breaker
.
The
Tighten
all
nuts
securely
and
lock with
mechanism
is
installed and
properly
ad
-
set
screws
.
Use
the
proper
connection
diagram
justed
when
received
.
The
trip
latches
are
*
for
each
individual
job
for
testing
and
fastened
during
shipment
and this
fasten
-
Install the
vertical
operating
rod
making
connections
.
The
mechanism
is
ing
should be
removed
after
the
breaker
cover
pipe
between
the
front
crank
cover
wired
completely
at
the
factory
to
has been
moved
into
position
.
support
and
the
top
of
the mechanism
terminal
boards
mounted
on
the
bottom
housing
.
Sometimes
it
is
convenient
to
of
the
control
panel
.
Incoming
conduits
install
this
cover
pipe
prior
to
raising
the
can
be
terminated
in
a
removable
plate
in
housing
into
position
on
the
breaker
If
the
mechanism and
housing
are
tank
.
Next
install the vertical
operating
shipped
separately
,
or
the mechanism
and
ro
(
j
,
The
length
of
the
operating
rod
housing
have
been
removed
from
the
be
adjusted
by
means
of
right
-
and
left
-
breaker
for
shipment
,
then
it
is
necessary
hand threaded
couplings
on
the ends
to
to
fasten
the mechanism
and
housing
in
obtain
the
required
breaker
adjustment
position
.
MOUNTING
the
housing
floor
directly
under
the
terminal boards
.
This
plate
can
be
drilled
to
suit
any
conduit
requirements
.
It
is
recommended
that all
conduits
entering
the mechanism
housing
be
sealed
off
at
their
entrances to
the
housing
.
can
,
as
described
in
the
breaker
instruction
book
.
ADJUSTMENTS
The
breaker
frame
to
which
the
oper
-
ating
mechanism
is
to
be mounted
should
first be
plumb
.
This
procedure
is
described
in
the
breaker
instruction
book
.
By
mounted
,
electrical
connections
can
be
placing
a
plumbed
straight
edge
extending
made
.
Before
making
these
,
precautions
from
top
to
bottom
against
the
mech
-
should be taken
to
see
that
all
leads
to
be
anism
mounting
pads
on
the
breaker
connected
to
the
mechanism
are
de
-
framework
,
determine the
amount
of
energized
,
shim washers
needed
to
make
them
all
flush
.
To
this
amount
add
an
equal
number
of
shims
to
each
of
the
pads
so
as
it
is
practicable
.
Control
wires
must
be
that
there
is
a
nominal
one
-
quarter
inch
run
separately
and
remote
from
high
thickness
of
shims
.
A
single
brass
washer
tension
leads
and
not
in
the
same
duct
or
is
to
be
placed
between
the
steel washers
parallel
to
high
tension
leads
unless
the
and
the
mechanism
housing
and
against
distance
separating
the
two
sets
of
wiring
the
gasket
for
more
effective
sealing
is
sufficient
to
prevent
posssible
commun
-
against
the
entrance
of
water
.
It
may
be
ication between
them
as
a
result
of
short
necessary
to
add
or
remove
steel
shims
to
circuits
.
CONNECTIONS
Although
the
mechanism
has
been
adjusted
and
tested
at
the
factory
,
it
is
advisable
to
check
all
the
following
points
as
well
as
those
listed
under
FINAL
INSPECTION
to
be
sure
that
no
change
has
occurred
during
shipment
and
instal
-
lation
.
No
adjustments
should
be
altered
unless
this
inspection
indicates
it
is
neces
-
sary
.
9
After
the
mechanism
has
been
Rim
control
wires
in
conduit
insofar
Use
manual
operation
for
all
pre
-
liminary
inspection
.
After
the
mechanism
is
connected
to
the
breaker
,
operate
it
slowly
to
see
that
the
operation
is
smooth
throughout
the
closing
stroke
,
that
no
binding
occurs
,
and
that
no
excessive
play
o
5
Courtesy of NationalSwitchgear.com

GEK
7153
Spring
-
charged
Operating
Mechanism
Type
ML
-
14
-
0
When
the
springs
have
reached
the
Fig
.
2
,
no
longer
is
advanced
.
The
closing
fully charged
position
the
indicator
(
7
)
}
spring
blocking
device
(
13
)
,
Fig
.
2
,
can
Fig
.
2
,
will
read
“
CHARGED
”
,
and
the
now
be
removed
,
DO
NOT
OPERATE
driving
pawl (
4
)
,
Fig
.
5
,
will be
raised
OR
PUSH
THE
MANUAL
CLOSE
BUT
-
from
the
ratchet
wheel
teeth
,
Additional
TON
(
24
)
,
FIG
.
2
,
WHILE
THE
BREAK
-
turning
of
the
eccentric
will
not
advance
ER
IS
IN
THE
CLOSED
POSITION
,
the ratchet wheel
.
The
latching
and
safety
Damage
to
the
linkage
,
ratchet
wheel
and
pawls
(
16
)
,
Fig
,
3
,
work
in
conjunction
pawls
might
occur
,
This
damage
would
be
with
the
driving
pawl (
4
)
,
Fig
.
5
,
to
pre
-
caused
by
the
energy
of
the
springs
not
vent
the ratchet
wheel
(
73
)
,
Fig
.
10
,
from
being
absorbed
by
the
mechanism
linkage
turning
backwards
due
to
the
force
of
the
and
breaker
in
the
spring
hitting
a
station
-
closing
springs
as
the
ratchet
wrench
(
7
)
,
ary
linkage
instead
of
pushing
a
movable
Fig
.
5
,
is
operated
.
linkage
.
Insert
the
spring
blocking
device bar
(
13
)
,
Fig
.
2
,
into
both
springs
and
man
-
ually
discharge
the
springs against
the
pins
by
pushing
the
manual
close
button
(
24
)
,
Fig
.
2
.
The
springs
are
now
blocked
and
slow
closing
of
the
breaker
contacts
can
be
accomplished
by
again
turning
the
driving
eccentric with
a
5
/
8
ratchet
wrench
.
is
noticeable
between
parts
.
Electrical
operation
should
be
attempted
only
after
it
is
certain
that
all
mechanism
adjust
-
ments
are
made
correctly
and
that
the
oil
circuit
breaker
is
correctly
adjusted
according
to
its
instructions
.
The
breaker
and
mechanism
adjust
-
ments
must
be
checked
when the
mech
-
anism
is
being
manually
closed
since
the
mechanism
can
only
be
operated
slowly
in
the
closing
direction
.
UNDER
NO
CIRCUMSTANCES
SHOULD
THE
BREAKER
BE
TRIPPED
MANUALLY
OR
ELECTRICALLY
WITHOUT
OIL
IN
THE
TANKS
UNTIL
THE
PROPER
BREAKER
INSTRUC
-
TION BOOK
HAS
BEEN
CHECKED
TO
DETERMINE
WHETHER
OR
NOT
THE
BREAKER
CAN
BE
OPERATED
WITH
-
OUT
OIL
IN
THE
TANKS
.
Operate
the
circuit
breaker electri
-
cally
several
times
.
Check
the
control
voltage
as
described
under
CONTROL
POWER
CHECK
.
NOTE
:
If
the
breaker
sec
-
ondary
wiring
is
to
be
given
a
hi
-
potential
test
at
1500
volts
a
-
c
,
remove
both the
major
leads
from
the
terminal
con
-
nection
.
Failure
to
disconnect
the
motor
from
the
circuit
may
cause
damage
to
the
winding
insulation
.
The
spring
blocking
device
is
made
to
extend
out
the
right
door
and
must
be
removed
in
order
to
close the
door
.
This
is
to
prevent
leaving
the
mechanism
blocked
accidentally
after
maintenance
.
Each mechanism
is
furnished
with
a
blocking
device
and should
remain
in
the
bottom
of
the house
since
the
spring
centers
may
differ
from
unit
to
unit
.
Manual
operation
of
the
mechanism
should
not
be
attempted
until
the
bearing
surfaces
of
the
mechanism
have been
checked
for
lubrication
.
Refer
to
the
section
on
lubrication
for
the
proper
oils
and
greases
.
TRIP
LATCH
WIPE
MANUAL
OPENING
Refer
to
Fig
.
10
and
to
“
U
”
,
Fig
.
13
,
The
wipe
of
the
trip
latch
(
50
)
,
Fig
.
10
,
on
the
trip
latch roller
(
52
)
should be
from
3
/
16
inch
to
1
/
4
inch
.
This
can
be
measured
by putting
a
film
of
grease
on
the
latch
(
50
)
,
closing
the
breaker
part
The breaker
can
be
tripped
manually
by
operating
the
manual
trip
level
(
4
)
,
Fig
.
3
.
This
will
give
an
opening
operation
very
similar
to
that
obtained
.
when
the
breaker
is
tripped
electrically
,
The
break
-
er
cannot
be
opened
slowly
,
except
with
an
optional
maintenance
jacking
device
.
During
the
slow
closing
operation
check
to
insure
that
the mechanism
does
not
stick
or
bind
during
the
entire
stroke
,
that
it
latches
securely
in
the
closed
position
,
and
that
it
trips
freely
when
the
way
,
and
tripping
.
The
mechanism
has
manual
trip
lever
(
19
)
,
Fig
,
2
,
is
operated
,
the
proper
trip
latch
wipe
when the latch
The
breaker
should
not
be
operated
elec
-
rests
against
the
stop
pin
(
53
)
.
No
adjust
-
fcricaUy
until
it
has
been
operated
several
ment
is
provided
and
a
visual
inspection
is
times
manually
to
insure
freedom
of
usually
all
that
is
required
.
If
this
setting
action
.
At
this
time
,
also check
the
is
not
correct
,
look
for
insufficient travel
breaker
adjustments
as
given
in
the
of
the
trip
shaft
(
24
)
,
breaker
instruction
book
.
MANUAL
CLOSING
DISCONNECT
THE
POWER
TO
THE
SPRING
-
CHARGING
MOTOR TO
PREVENT
ITS
OPERATION
BEFORE
OPERATING
THE
BREAKER
MANU
-
ALLY
AND
ALSO
BEFORE
MAN
-
UALLY
CHARGING
THE
CLOSING
SPRINGS
.
To
operate
the
mechanism
manually
charge
the breaker
closing
springs
(
12
)
and
(
28
)
,
Fig
.
2
,
manually
using
a
5
/
8
inch
ratchet
wrench
on
the
manual
charg
-
ing
stud
(
26
)
,
Fig
.
2
,
to turn
the
driving
eccentric
'
(
25
)
,
Fig
.
2
.
Turning
the
driving
e
c c
e
n
t
r
i
c coun
te
rcl
oc
kwise
(
pu
shin
g
downward
on
the
ratchet wrench
)
,
will
advance
the
ratchet
wheel
(
22
)
and
com
-
-
•
*
'
press
the
closing
springs
.
WHEN
WORKING ON
THE
MECH
-
ANISM
IN
THE
CLOSED POSITION
,
KEEP
FINGERS
CLEAR
OF
THE
LINK
-
AGE
,
AS
ACCIDENTAL
TRIPPING
CAN
CAUSE
SEVERE
INJURY
.
Use
the
trip
latch
blocking
pin
tool
which
is
inserted
in
the
trip
latch block
-
ing
pin
hole
(
100
)
,
Fig
.
9
and
Fig
.
12
and
(
24
)
,
Fig
,
3
,
until
it
extends
beyond
the
opposite
frame
.
DO NOT
WORK
ON
EITHER THE
BREAKER
OR
MECHANISM
UNLESS
THE
CLOSING SPRINGS
AND
TRIP
-
LATCIi
ARE
BLOCKED
.
THIS
PRE
-
CAUTION
IS
REQUIRED
TO
PREVENT
ACCIDENTAL
CLOSING
OR
TRIP
-
PING
.
USE
THE
69
LOCK
-
OUT
SWITCH
IF
REMOTE
CONTROL
IS
USED
.
After
the
adjustments
have
been
checked
,
the
springs
can
be
unblocked
.
Rotate
the
driving
eccentric
(
25
)
,
Fig
.
2
,
until
the indicator
(
7
)
,
Fig
.
2
,
reads
“
CHARGED
”
and
the
ratchet
wheel
(
22
)
,
13
,
and
“
N
”
,
Fig
.
14
.
With
the
breaker
in
TRIP
LATCH
CLEARANCE
-
rc
Refer
to
Fig
,
12
,
and
to
“
R
”
,
Fig
,
6
Courtesy of NationalSwitchgear.com

Spring
-
charged
Operating
Mechanism
Type
ML
-
14
-
0
GEK
7153
will
lock the
eccentric
.
Tighten
the
lock
-
nuts
on
the
eccentric
after
adjusting
the
eccentric
.
o
PROP
CLEARANCE
Refer
to
(
38
)
,
Fig
.
10
,
and
to
“
V
”
Fig
.
13
.
With
the
breaker
closed
as
far
as
possible
,
that
is
,
with
the
springs
(
79
)
,
and
(
62
)
,
Fig
.
11
,
blocked
and the
cam
(
39
)
,
Fig
.
10
,
rotated
so
that
the
cam
follower
roller
shaft
(
68
)
is
at
its
maxi
-
mum
height
over
the
prop
(
38
)
,
the
clear
-
ance
between the
prop
and
cam
shaft
should
be
1
/
16
inch
to
5
/
32
inch
.
No
adjustment
is
provided
and
a
visual
inspection
is
usually
all
that
is
required
.
:
-
.
v
k
:
-
(
i
*
14
16
17
5
24
PROP
WIPE
ON
7
<
N
s
00
Refer
to
Fig
.
10
and
“
K
”
,
Fig
.
13
.
With
the
breaker closed
and
the
linkage
resting
on
the
closing
prop
(
38
)
,
Fig
.
10
,
the
prop
wipe
should
be
3
/
16
inch
to
3
/
8
inch
from
the
cam
follower
roller shaft
(
68
)
,
Fig
.
10
,
to
the
edge
of
the
prop
.
No
adjustment
is
provided
and
a
visual
inspection
is
usually
all that
is
required
.
3
CO
00
U
,
12
CLOSING
LATCII
WIPE
13
Refer
to
Fig
.
9
and
to
UX
”
Fig
.
15
.
The
wipe
between
the
closing
latch
(
8
)
and
the
closing
latch
roller
(
29
)
should be
3
/
16
inch
to
1
/
4
inch
.
If
resetting
is
required
,
loosen
,
set
,
and
retighten
the
adjustment
screw
(
10
)
,
then
tighten
the
locking
nut
(
11
)
.
1
.
Mechanism
House
2
.
House
Support
Bracket
3
.
Lock
-
out
Device
(
69
Switch
)
4
.
Manual
Trip
Lever
5
.
Manual
Trip
Push Rod
6
.
Trip
Latch
Clearance
Adjustment
Eccentric
1
,
.
.
^
Manual
Close
Push
Rod
8
,
Eccentric
9
.
Manual
Charging
Stud
.
(
5
/
8
inch
hex
)
10
.
Driving
Link
11
.
Right
Closing
Spring
12
.
Closing
Spring
Blocking
Device
13
.
Access
Plate
(
Customer
’
s
Wiring
)
14
.
Output
Crank
Main
Shaft
15
.
Output
Coupling
16
.
Latching
And
Safety
Pawls
17
.
Ratchet
Wheel
18
.
CamShaft
19
.
Guide
Block
20
.
Closing
Coil
(
52
CC
)
21
.
Closing
Coil
Plunger
Instruction
Book
23
.
Weatherstrip
24
.
Trip
Latch
Blocking
Pin
CLOSING
LATCH
MONITORING
SWITCH
Refer
to
Fig
.
9
and
to
“
T
”
,
Fig
.
13
.
The
closing
latch
(
8
)
must
be
fully
reset
and
the
closing
latch
monitoring
switch
(
16
)
operated
before
the
motor
(
34
)
will
start
.
The
closing
latch
monitoring
switch
should
be
wiped
by
the
operating
lever
(
23
)
,
Fig
.
2
,
so
that
the
clearance
be
-
tween
the
operating
lever
and the
switch
mounting
bracket
(
8
)
,
Fig
.
6
,
is
0.005
to
0.032
inch
.
To
obtain
this
adjustment
bend
the
monitoring
switch
operating
the
tripped
position
and the
closing
locknut
(
84
)
,
Fig
.
12
,
at
the
trip
latch
Jcver
as
necessary
.
Be
sure
the
latch
is
springs
(
12
)
and
(
28
)
,
Fig
.
2
,
charged
,
clearance
adjustment
eccentric
(
6
)
,
Fig
.
3
,
reset
before
making
any
ad
-
check the
clearance
between
the
trip
with the
breaker
in
the
tripped
position
,
justments
.
latch
(
50
)
,
Fig
.
11
,
and
the
trip
latch
Adjust
the
eccentric
(
25
)
,
Fig
.
2
,
as
neces
-
roller
(
52
)
,
It
should
measure
1
/
32
inch
sary
.
Adjust
the
trip
latch
clearance
by
to
3
/
32
inch
.
turning
the
eccentric
in
a
clockwise direc
-
~
.
.
.
,
.
.
,
t
tion
while
decreasing
the clearance
.
This
To
change
the
adjustment
loosen
the
22
.
.
Fig
.
3
Right
Side
View
of
Mechanism
MOTOR
LIMIT
SWITCHES
Refer
to
Fig
.
9
and
to
“
Z
”
,
Fig
.
15
.
With
the
closing
springs
blocked
rotate
7
Courtesy of NationalSwitchgear.com

GEK
7153
Spring
-
charged
Operating
Mechanism
Type
ML
-
14
-
0
X
-
fnmJi
/
-
T
\
<
N
PO
w
.
Trip
Latch
Checking
Switch
Trip
Latch
Shaft
Charge
-
discharge
Indicator
Linkage
Charge
-
discharge
Indicator
Switch
Support
Bolts
Motor
Limit
Switch
Support
Motor
Limit
Switches
Motor
Limit
Switch
Striker
Closing
Latch
Control
Panel
Control
House
Heater
Circuit
Fused
Pullout
Cutoff
and
Anti
-
pump
Relay
(
52
Y
)
Trip
Latch
Blocking
Pin
Motor
Circuit
Fused
Pullout
(
When
Required
)
19
.
20
.
21
.
1
,
Output
Coupling
2
*
Limit
Switch
Cam
3
.
CamShaft
4
.
Closing
Circuit
'
Fused
Pullout
5
.
Trip
Circuit
Fused
Pullout
6
.
Terminal
Boards
7
.
Control
House
Heater
8
.
House
Support
Bracket
9
.
Auxiliary
Switch
10
.
Prop
Reset
Spring
Fig
.
4
Left
View
of
Mechanism
22
.
23
.
24
,
8
Courtesy of NationalSwitchgear.com

Spring
charged
Operating
Mechanism
Type
ML
-
14
-
0
GEK
7153
Ui
%
u
«
.•
:
w
.
\
'
.
s
*
>
.
>
••
.
*
:
vr
•
r
V
-
’
*
/
-
*
N
00
00
<
N
s
00
W
>
*
3
*
*
*
/
*
-
V
v
.
'
•
C
:
>
s
-
r
-
<
»
»
»
.
^
-
-
0
••
-
X
*
-
I
.
Manual
Close
Push
Rod
Spring
-
charging
Motor
Ratchet
Wheel
Driving
Pawl
Motor
Mounting
Bolts
1
.
6
.
Eccentric
7
.
Manual
Charging
Stud
(
5
/
8
Inch
Hex
)
8
.
Driving
Link
9
.
Motor
Support
and
Bearing
Housing
2
.
3
.
4
.
5
.
Fig
,
5
Driving
Elements
9
Courtesy of NationalSwitchgear.com

GEK
7153
Spring
-
charged
Operating
Mechanism
Type
ML
-
14
-
0
W
o
oo
ON
CO
'
w
'
NO
oh
>
«
*
r
1
-
~
'
V
*
«
.
$
)
6
.
Manual
Charging
Stud
and
Wrench
7
.
Driving
Link
8
.
Monitoring
Switch
Mounting
Bracket
9
.
Closing
Coil
(
52
CC
)
10
,
Closing
Coil
Plunger
1
.
Motor
Support
Bolts
2
.
Driving
Motor
3
.
Closing
Latch
Monitoring
Switch
4
.
Ratchet
Wheel
5
.
Eccentric
Fig
.
6
Closing
Devices
is
closed
,
No
adjustment
is
provided
and
a
visual
inspection
is
usually
all
that
is
required
.
If
for
some
reason
the
auxiliary
switch
is
removed
it
must
be
properly
reinstalled
.
The
“
V
”
stamped
on
the
SB
*
12
auxiliary
switch
shaft
must
point
toward
the
switch
terminals
or
180
degrees
away
from
the
terminals
to
pre
-
vent
overlap
of
the
contacts
.
If
“
a
”
and
“
b
”
contacts
overlap
somewhat
during
the
breaker
stroke
the
auxiliary
switch
is
assembled
incorrectly
and
must
be
properly
reset
,
Remove
the
switch
oper
-
ator
from
the
square
shaft
.
Rotate
the
square
shaft
until
the
arrow
on
the
end
of
the
shaft
is
pointing
toward
the
upper
front
corner
of
the
switch
mounting
plate
with
the
breaker
in
the
open
position
.
Install
the
switch
operator
and
make
certain
there
is
no
overlap
between
the
“
a
”
and
“
b
”
contacts
during
the
breaker
stroke
.
er
stroke
is
increased
by
lowering
the
dashpots
and
/
or
the
toggle
setting
at
its
minimum
(
FKA
)
and
/
or
internal
stops
at
their
minimums
(
FK
)
and
/
or
shortening
of
the
vertical
operating
rod
.
AUXILIARY
SWITCH
-
TYPE
SB
-
12
Refer
to
Fig
.
11
and
to
“
L
”
,
Fig
.
15
.
The
auxiliary
switch
(
19
)
,
Fig
.
11
,
is
mounted
on
the
left
side
of
the
operating
mechanism
frame
(
2
)
.
The
linkage
(
59
)
attached
to
the
pin
(
40
)
,
Fig
.
10
,
of
the
output
crank
(
4
)
operates
the
auxiliary
switch
shaft
which
opens
and
closes
the
“
a
”
and
"
b
”
contacts
.
The
“
a
”
contacts
are
open
when
the
breaker
is
open
and
the
“
b
”
contacts
are
open
when
the
breaker
is
closed
.
The
“
a
”
contacts
need
only
to
be
checked
to
make
certain
they
are
open
when
the
breaker
is
open
.
The
“
b
”
contacts
need
only
to
be
checked
to
see
that
they
are
open
when
the
breaker
the
switch
cam
(
6
)
until
the
motor
limit
switch
striker
(
26
)
has
traveled
the
maximum
amount
(
about
180
degrees
rotation
of
the
cam
)
.
Loosen
the
mounting
bolt
(
28
)
and
rotate
the
switch
support
(
16
)
,
Fig
.
4
,
until
the
gap
be
-
tween
the
motor
limit
switch
striker
(
26
)
,
Fig
.
9
,
and
the
switch
support
(
16
)
,
Fig
.
4
,
is
0.032
to
0.005
inch
.
CLOSING
CAM
CLEARANCE
Refer
to
Fig
.
18
.
The
sum
of
"
C
”
plus
“
R
”
should
not
exceed
0
,
170
inch
.
This
clearance
is
affected
by
the
adjust
-
ment
of
the
breaker
opening
dashpots
,
toggle
setting
(
FKA
)
,
internal
stops
(
FK
)
,
and
vertical
operating
rod
length
.
Normal
-
ly
no
adjustment
is
required
;
however
,
this
clearance
should
be
checked
if
the
breaker
settings
are
changed
,
The
closing
cam
clearance
is
reduced
when
the
break
-
10
Courtesy of NationalSwitchgear.com

Spring
-
charged
Operating
Mechanism
Type
ML
-
14
-
0
GEK
7153
sss
2
-
0
3
oo
VO
Oo
Q
u
>
O
'
w
'
6
7
8
Operation
Counter
Main
Output
Crank
Trip
Coil
Plunger
Trip
Latch
Checking
Switch
Trip
Latch
Checking
Switch
Operating
Lever
Trip
Shaft
Retaining
Cotter
Pin
Trip
Latch
Trip
Latch
Stop
Pin
Trip
Coil
Support
Bracket
1
.
Trip
Coil
Positioning
Shims
Trip
Coil
Trip
Coil
Positioning
Shims
Lock
-
out
Device
(
69
Switch
)
Trip
Coil
Link
Trip
Crank
Trip
Crank
Adjustment
Bolt
Manual
Trip
Lever
Trip
Latch
Shaft
Trip
Latch
Set
Screw
10
.
2
.
11
.
3
.
12
.
4
.
13
.
5
.
14
.
15
.
6
.
16
.
7
.
17
.
8
.
18
.
9
.
19
.
Fig
.
7
Tripping
Devices
11
Courtesy of NationalSwitchgear.com

GEK
7153
Spring
-
charged
Operating
Mechanism
Type
ML
-
14
-
0
6
.
Closing
Latch
7
.
Control
Panel
Shock
Mount
8
.
Charge
-
discharge
Indicator
Linkage
9
.
Charge
-
discharge
Indicator
10
.
Motor
Limit
Switch Striker
11
.
Charging
Motor
Limit
Switches
12
.
Motor
Lead
Terminal
Board
13
.
Control
Wiring
14
.
Spring
-
charging
Motor
1
.
Limit
Switch
Cam
2
.
CarnShaft
3
.
Guide
Block
4
.
Closing
Latch Roller
5
.
Closing
Latch
Shaft
Fig
.
8
A
Closing
Latch
and
Motor
Control
DRIVING
AND
LATCHING
PAWL
ADJUSTMENT
veled
through
its
return
stroke and
check
to
adjust
the
motor
mount
for
proper
the
maximum
driving
clearance
between
ratcheting
.
This
corresponds
to
a
0.015
the
driving
pawl
and
the
ratchet
tooth
inch clearance between
the
tip
of
the
“
Q
”
,
Fig
,
14
.
Rotate
the
charging
wrench
ratchet tooth and the
tip
of
the
pawl
as
until the
driving
pawl
has
advanced the
the
paw
)
falls
past
the ratchet tooth
,
If
for
some
reason
the
0
,
040
inch
clearance
cannot
be
maintained
a
some
-
what less
amount
is
satisfactory
provided
the
mechanism
will
slowly
close the
breaker
when
operated
manually
or
close
the
breaker
normally
when
operated
elec
-
trically
and
that
the
springs
can
be
charged manually
or
electrically
.
Refer
to
Fig
.
12
and
to
“
P
”
and
"
Q
”
,
Fig
.
14
.
The
driving
pawl
(
74
)
,
Fig
.
12
,
must
advance
the
ratchet wheel
(
73
)
sufficiently
on
each stroke
to
allow
the
latching
pawl
(
70
)
to
fall
into
the
ratchet
teeth
of
the
ratchet
wheel
.
This
should
be
checked
with
a
major
portion
of
the
closing
spring
load
against
the
driving
members
.
With
the
mechanism
unblocked
,
manually
charge
the
closing
springs
with
the
manual
charging
wrench
(
7
)
,
Fig
.
5
,
until
they
are
slightly
more
than
half
charged
,
Slowly
rotate
the
charging
wrench
until
the
driving
pawl (
74
)
,
Fig
.
12
,
has
tra
-
ratchet
tooth
to
its maximum
travel
.
Now
check
the
latching
clearance between
the
ratchet tooth and
the
latching
pawl
(
70
)
,
“
P
”
,
Fig
.
14
.
The clearance
should
be
approximately
equal
for
both
the
driving
and
latching
pawls
and
not
less
than
0.040
inch
in
either
case
when
a
feeler
gage
is
inserted
to
approximately
one
-
half
the
depth
of
the
ratchet
tooth and
be
-
tween
the driven
portion
of
the
ratchet
tooth
and
the
flat
above the
tip
of
the
pawl
the
closing
springs
must
first
be
pawl
,
0.040
inch
is
a
good
place
to
start
fully
charged
and
blocked
.
Remove
roll
If
adjustment
is
required
for
either
12
Courtesy of NationalSwitchgear.com

Spring
-
charged
Operating
Mechanism
Type
ML
-
14
-
0
GF
,
K
7153
Cam
Shaft
Guide
Block
Closing
Latch
Roller
Closing
Latch
Shaft
Closing
Latch
Control
Panel
Shock
Mount
2
.
9
.
Charge
-
discharge
Indicator
10
.
Charging
Motor
Limit
Switch
Striker
11
.
Charging
Motor
Limit
Switches
12
.
Motor
Lead
Terminal
Board
13
.
.
Control
Wiring
14
.
Spring
-
charging
Motor
16
.
Closing
Latch
Wipe
Adjusting
Screw
17
.
Closing
Latch
18
.
Closing
Coil
Plunger
19
.
Trip
Latch
Safety
Rod
20
.
Motor
Limit
Switch
Adjusting
Screw
.
3
.
4
.
5
.
6
.
7
.
Fig
.
8
B
Mechanism
Open
-
Trip
Latch
in
Place
(
Springs
Discharged
)
JjOvj
pin
from
right
side
of
motor
mounting
plate
by
driving
the
pin
through
the
side
plate
.
Loosen
the
motor
mounting
bolts
(
5
)
,
Fig
.
5
,
and
move
the
entire
motor
assembly
to
the
rear
toward
the
breaker
tanks
if
the clearance
is
under
the
mini
-
mum
at
the
latching
and
safety
pawls
,
and
,
to
the
front
away
from
the
breaker
tanks
if
the clearance
is
under
the
mini
-
mum
at
the
driving
pawl
.
Move
the
motor
assembly approximately
twice
the
dimen
-
sional
increase
required
at
the
pawl
.
Move
the
entire
motor
and
motor
-
mount
assem
-
bly
in
1
/
64
inch increments
as
a
small
movement
here
results
in
a
large
move
-
ment
at
the
pawls
.
Be
certain
the
motor
have
a
0.015
to
0.030
inch
clearance
above
the
teeth
of
the
ratchet
wheel
(
73
)
when
the
closing
spring
(
62
)
and
(
79
)
,
Fig
.
II
,
are
completely
charged
,
“
H
”
,
Fig
.
14
.
This
is
checked
with the
closing
springs
completely
closed and
gagged
by
measuring
the
distance between
the
out
-
board
latching
pawl
and the ratchet
tooth
with
the
pawl
raised
as
high
as
possible
.
This
is
adjusted
by
loosening
the
locknut
(
86
)
,
Fig
.
12
,
and
adjusting
the
latching
and
safety
pawls
'
adjustment
screw
(
69
)
,
Fig
.
12
,
as
necessary
.
The
safety
pawl
(
inboard
of
the
latching
pawl
)
will
then
have
up
to
a
0.060
inch clearance
more
than
the
latching
pawl
.
assembly
i
$
‘
moved
straight
forward
or
rearward
and
tighten
the
one
bolt
on
the
right
side
of
the
mounting
frame
first
to
assure
proper
alignment
.
After
tightening
the
remaining
bolts
the
springs
should
be
released
and the
clearance
again
checked
as
described
above
.
Re
drill
and
pin
in
the
same
area
to
prevent
movement
.
LATCHING
PAWL TO
RATCHET
WHEEL
CLEARANCE
Refer
to
Fig
.
12
and
to
“
H
”
,
Fig
.
14
.
The
latching
pawl
(
70
)
,
Fig
.
12
(
which
is
the
outboard
pawl
at
this location
)
must
13
Courtesy of NationalSwitchgear.com

GEK
7153
Spring
-
charged
Operating
Mechanism
Type
ML
-
J
4
-
0
a
*
m
a
*
21
(
N
5
<
D
O
)
ON
7
-
o
Q
CO
00
o
ON
•
T
-
*
1
1
UllllilLajlllllHH
|
|
12
Li
32
14
33
15
1
.
Mechanism
House
Support
Bracket
2
.
Mechanism
Frame
3
.
Output
Crank
Main
Shaft
4
.
Output
Crank
5
.
Prop
6
.
Limit
Switch
Cam
7
.
Cam
Shaft
8
.
Closing
Latch
9
.
Closing
Latch
Shaft
10
.
Closing
Latch
Wipe
Adjusting
Screw
11
.
Closing
Latch
Wipe
Adjusting
Screw
Locknut
12
.
Closing
Latch
Monitoring
Switch
Operating
Lever
13
.
Closing
Coil
14
.
Closing
Coil
Support
Bracket
30
.
Motor
Limit
Switches
31
.
Motor
Support
Bracket
32
.
Motor
Support
Bracket
Bolts
33
.
Manual
Close
Push
Rod
Button
34
.
Spring
-
charging
Motor
35
.
Mechanism
Frame
Tie
Rod
36
.
Vertical
Operating
Rod
Lower
Coupling
37
.
Cam
Follower
Roller
38
.
Closing
Prop
39
.
Cam
40
.
Linkage
to
Output
Crankshaft
41
.
Upper
Link
42
.
Trip
Coil
43
.
Trip
Coil
Plunger
44
.
Lock
-
out
Switch
(
69
device
)
45
.
Trip
Coil
Linkage
15
.
Closing
Coil
Plunger
16
.
Closing
Latch
Monitoring
Switch
17
.
Closing
Latch
Spring
18
.
Operation
Counter
19
.
Auxiliary
Switch
20
.
Prop
Reset
Spring
21
.
Stop
Pin
22
.
Trip
Latch
Checking
Switch
23
.
Trip
Latch
Checking
Switch
Operating
Lever
24
Trip
Latch
Shaft
25
.
Charged
-
discharged
Indicator
26
.
Motor
Limit
Switch
Striker
27
.
Link
Shaft
28
.
Motor
Limit
Switch
Support
Bolts
29
.
Closing
Latch
Roller
7
’
Fig
.
9
.
Left
Side
View
of
the
Mechanism
Linkage
in
the
Latch
Closed
Position
(
Spring
-
charged
)
14
Courtesy of NationalSwitchgear.com

Spring
-
charged
Operating
Mechanism
Type
ML
-
14
-
0
GEK
7153
44
-
46
f
\
%
50
\
^
rnasm
67
~
—
52
68
37
38
7
—
56
88
-
27
39
57
ZvWW
-
S
'
*
12
•
i
o
33
I
49
46
.
Mechanism
Frame
Tie
Rod
84
.
Trip
Latch
Clearance
Adjustment
Locking
Nut
85
.
Vertical
Operating
Rod
Locking
65
.
Trip
Coil
Support
66
.
Trip
Coil
Shims
67
.
Prop
Spacer
and
Reset
Spring
47
.
Trip
Latch
Spring
48
.
Trip
Crank
49
.
Lower
Link
50
.
Trip
Latch
51
.
Trip
Latch
Guide
Roller
52
.
Trip
Latch
Roller
53
.
Trip
Latch
Stop
Pin
54
.
Trip
Latch
Roller
Shaft
55
.
Trip
Latch
Assembly
Support
Bolt
Pin
86
.
Latching
and
Safety
Pawls
Adjustment
Locknut
87
.
Driving
Pawl
Return
Spring
88
.
Cam
Shaft
Bearing
89
.
Mechanism
House
Adjusting
Bolt
and
Locknut
90
.
Closing
Latch
Bearing
91
.
Left
Guide
Block
Bearing
92
.
Right
Guide
Block
Bearing
93
.
Sprocket
94
.
Driving
Chain
95
.
Driving
Eccentric
Bearing
96
.
Driving
Link
Bushing
97
.
Driving
Pawl
Bushing
98
.
Driving
Crank
Bushing
99
.
Sprocket
Shaft
Bushing
100
.
Trip
Latch
Blocking
Pin
Hole
101
.
Locking
Nut
102
.
Trip
Latch
Roller
Shaft
Bearing
68
.
Cam
Follower
Roller
Shaft
69
.
Latching
and
Safety
Pawls
Adjustment
Screw
70
.
Latching
Pawl
71
.
Trip
Coil
Linkage
Adjustment
Allen
Head
Bolt
72
.
Manual
Trip
Lever
73
.
Ratchet
Wheel
74
.
Driving
Pawl
75
.
Driving
Crank
76
.
Driving
Eccentric
77
.
Manual
Charging
Stud
78
.
Driving
Link
79
.
Right
Closing
Spring
80
.
Motor
Support
Bracket
81
.
Right
Closing
Spring
Blocking
Device
82
.
Manual
Trip
Adjusting
Bolt
83
.
Manual
Trip
Locking
Nut
Link
56
.
Trip
Latch
Clearance
Adjustment
Eccentric
Shaft
57
.
Trip
Latch
Assembly
Support
Link
Spring
58
.
Breaker
Vertical
Operating
Rod
59
.
Auxiliary
Switch
Operating
Linkage
60
.
Trip
Latch
Checking
Switch
Support
61
.
Guide
Block
62
.
Left
Closing
Spring
63
.
Closing
Spring
Support
64
.
Left
Closing
Spring
Blocking
Device
Fig
.
10
Left
Side
Sectional
View
of
the
Mechanism
Linkage
in
the
Latch
Closed
Position
15
Courtesy of NationalSwitchgear.com

GEK
7153
Spring
-
charged
Operating
Mechanism
Type
ML
14
0
Mechanism
House
Support
Bracket
Mechanism
Frame
Output
Crank
Main
Shaft
Output
Crank
Prop
Limit
Switch
Cam
Cain
Shaft
Closing
Latch
Closing
Latch
Shaft
Closing
Latch
Wipe
Adjusting
Screw
Closing
Latch
Wipe
Adjusting
Screw
Locknut
Closing
Latch
Monitoring
Switch
Operating
Lever
Closing
Coil
Closing
Coil
Support
Bracket
Closing
Coil
Plunger
Closing
Latch
Monitoring
Switch
Closing
Latch
Spring
Operation
Counter
Auxiliary
Switch
Prop
Reset
Spring
Stop
Pin
Trip
Latch
Checking
Switch
Trip
Latch
Checking
Switch
Operating
Lever
Trip
Latch
Shaft
Charged
-
discharged
Indicator
Motor
Limit
Switch
Striker
Link
Shaft
Motor
Limit
Switch
Support
Bolts
Closing
Latch
Roller
Motor
Limit
Switches
Motor
Support
Bracket
Motor
Support
Bracket
Bolts
Manual
Close
Push
Rod
Button
Spring
-
charging
Motor
Mechanism
Frame
Tie
Rod
Vertical
Operating
Rod
Lower
Coupling
Cam
Follower
Roller
Closing
Prop
Cam
Linkage
to
Output
Crankshaft
Upper
Link
Trip
Coil
Trip
Coil
Plunger
Lock
-
out
Switch
(
69
device
)
Trip
Coil
Linkage
Mechanism
Frame
Tie
Rod
Trip
Latch
Spring
Trip
Crank
Lower
Link
Trip
Latch
Trip
Latch
Guide
Roller
Trip
Latch
Roller
1
,
@
2
.
3
.
4
.
5
.
~
89
1
6
.
7
.
58
65
8
.
9
.
10
.
66
18
n
.
42
19
12
.
II
13
.
59
43
14
.
—
44
15
.
16
.
45
17
.
-
69
18
.
20
102
19
.
60
20
.
—
70
>
<
D
K
21
,
23
—
—
24
22
.
47
*
a
48
23
.
'
.
'
I
&
u
50
>
71
2
24
.
-
52
-
trJ
o
25
.
53
o
M
•
51
26
.
25
27
.
91
72
28
.
§
CO
92
29
.
30
73
30
.
OO
O
6
31
.
61
32
.
33
.
90
2
?
-
74
Pin
34
.
9
-
33
35
.
8
99
36
.
32
76
12
37
,
77
38
.
78
34
39
.
79
40
.
62
-
-
80
41
.
42
.
93
63
43
.
94
44
.
c
45
.
64
—
-
81
46
.
47
.
l L
48
.
49
.
50
,
51
.
52
.
§
Pig
.
11
,
Front
View
of
the
Mechanism
in
the
Latch
Closed
Position
16
Courtesy of NationalSwitchgear.com

Spring
-
charged
Operating
Mechanism
Type
ML
-
14
-
0
GEK
71
S
3
-
3
58
ID
*
>
85
a
>
44
-
0
$
36
45
4
48
100
86
c
\
o
Q
24
-
69
<
N
co
70
00
82
O
98
CN
83
l
-
i
101
.
2
?
[
J
*
73
72
92
27
61
84
Q
74
2
33
87
97
76
34
-
13
95
14
77
75
96
78
53
.
Trip
Latch
Stop
Pin
54
.
Trip
Latch
Roller
Shaft
55
.
Trip
Latch
Assembly
Support
85
.
Vertical
Operating
Rod
Locking
69
.
Latching
and
Safety
Pawls
Adjustment
Screw
70
.
Latching
Pawl
71
.
Trip
Coil
Linkage
Adjustment
Allen
Head Bolt
72
.
Manual
Trip
Lever
73
.
Ratchet
Wheel
74
.
Driving
Pawl
75
.
Driving
Crank
76
.
Driving
Eccentric
77
.
Manual
Charging
Stud
78
.
Driving
Link
79
.
Right
Closing
Spring
80
.
Motor
Support
Bracket
81
.
Right
Closing Spring
Blocking
Device
82
.
Manual
Trip
Adjusting
Bolt
83
.
Manual
Trip
Locking
Nut
84
.
Trip
Latch
Clearance
Adjustment
Locking
Nut
Fig
.
12
Right
Side
View
of
the
Mechanism
in
the
Latch
Closed
Position
Bolt
86
.
Latching
and
Safety
Pawls
Adjustment
Locknut
87
.
Driving
Pawl
Return
Spring
88
.
Cam
Shaft
Bearing
89
.
Mechanism
House
Adjusting
Bolt and
Locknut
90
.
Closing
Latch
Bearing
91
.
Left
Guide
Block
Bearing
92
.
Right
Guide
Block
Bearing
93
.
Sprocket
94
.
Driving
Chain
95
.
Driving
Eccentric
Bearing
96
.
Driving
Link
Bushing
97
.
Driving
Pawl
Bushing
98
.
Driving
Crank
Bushing
99
.
Sprocket
Shaft
Bushing
100
.
Trip
Latch
Blocking
Pin
Hole
101
.
Locking
Nut
102
.
Trip
Latch
Roller
Shaft
Bearing
Link
56
.
Trip
Latch
Clearance
Adjustment
Eccentric
Shaft
57
.
Trip
Latch
Assembly
Support
Link
Spring
58
.
Breaker
Vertical
Operating
Rod
59
.
Auxiliary
Switch
Operating Linkage
60
.
Trip
Latch
Checking
Switch
Support
61
.
Guide
Block
62
.
Left
Closing Spring
63
.
Closing
Spring
Support
64
.
Left
Closing
Spring
Blocking
Device
65
.
Trip
Coil
Support
66
.
Trip
Coil Shims
67
.
Prop
Spacer
and
Reset
Spring
m
Pin
68
.
Cam
Follower
Roller
Shaft
17
Courtesy of NationalSwitchgear.com

GEK
7153
Spring
-
charged
Operating
Mechanism
Type
ML
-
14
-
0
This
can
also
be
checked
by
mea
-
suring
the
distance
between
the
bottom
of
the
latching
and
safety
adjustment
screw
and
the
top
surface
of
the
latching
pawl
when
the
closing
springs
are
com
-
pletely
charged
.
TRIP
LATCH
CHECKING
SWITCH
Refer
to
Fig
,
10
and
to
“
Y
”
and
“
W
”
,
Fig
.
15
.
Rotate
the
trip
latch
(
50
)
,
Fig
.
10
,
clockwise
(
looking
at
the
left
side
of
the
mechanism
)
by
pressing
the
manual
trip
lever
(
17
)
,
Fig
.
7
,
to
open
the
latch
checking
switch
operating
lever
(
23
)
,
Fig
.
9
.
Allow
the
trip
latch
to
reset
slowly
and
determine
the
point
at
which
the
contacts
of
the
trip
latch
checking
switch
(
22
)
make
by
using
a
circuit
continuity
tester
,
such
as
a
light
indicator
or
bell
set
.
The
contacts
of
the
trip
latch
checking
switch
should
just
make
when
there
is
a
1
/
16
inch
gap
between
the
trip
latch
(
50
)
,
Fig
.
10
,
and
the
stop
pin
(
53
)
located
on
the
trip
latch
assembly
sup
-
port
link
(
55
)
.
There
should
be
a
min
-
imum
of
1
/
64
inch
between
the
operating
lever
(
5
)
,
Fig
.
7
,
and
the
trip
latch
checking
switch
(
22
)
,
Fig
.
9
.
Bend
the
trip
latch
checking
switch
operating
lever
(
23
)
,
Fig
.
9
,
as
necessary
to
adjust
.
/
T
*
\
>
&
EN
8
HEAD
BOLT
XJ
§
£
s
o
*
>
CO
8
X
3
CO
TRIP
COIL
PLUNGER
to
Refer
to
Fig
.
10
and
“
S
’
\
Fig
,
13
.
The
plunger
(
43
)
of
the
trip
coil
(
42
)
must
have
a
minimum
of
1
/
8
inch
free
travel
before
the
trip
latch
(
50
)
starts
to
move
to
provide
proper
tripping
at
reduced
voltages
.
This
is
adjusted
by
loosening
the
Allen
set
screw
which
is
located
in
the
trip
latch
shaft
(
24
)
.
This
set
screw
bears
against
the
Allen
head
bolt
(
71
)
,
Fig
.
11
,
securing
the
bolt
in
place
.
Rotate
the
trip
crank
(
48
)
,
Fig
.
10
,
about
the
trip
latch
shaft
until
the
correct
free
travel
of
the
trip
coil
plunger
is
obtained
.
Adjust
the
Allen
head
bolt
to
contact
the
trip
crank
at
this
point
.
Install
the
Allen
screw
from
the
front
side
of
the
trip
latch
shaft
from
the
front
side
of
the
trip
latch
shaft
then
tighten
the
Allen
head
adjusting
bolt
(
71
)
,
Fig
.
11
*
This
free
travel
must
be
sufficient
so
that
the
breaker
is
able
to
trip
at
its
minimum
trip
voltage
.
The
values
are
in
a
chart
under
FINAL
INSPECTION
.
tea
&
Fig
.
13
Adjustment
and
Final
Clearance
Checks
18
Courtesy of NationalSwitchgear.com

Spring
-
charged
Operating
Mechanism
Type
ML
14
-
0
GEK
71
S
3
direction
,
Tighten
the
locknut
after
adjusting
.
RECLOSING
TIME
*
DELAY
RELAY
(
79
X
)
This
relay
is
an
optional
feature
for
those
who
desire
an
adjustable
reclosing
operation
.
The
reclosing
cycle
must
be
set
up
so
that
the
breaker
contacts
open
at
least
the
minimum
distance
which
is
given
in
the
breaker
instruction
book
before
the
contacts
start
to
reclose
,
The
point
at
.
which
they
start
to
reclose
is
determined
by
the
breaker
opening
speed
and
the
setting
of
the
time
-
delay
relay
which
initiates
the
reclosing
circuit
.
The
oper
-
ating
voltage
is
given
on
the
breaker
nameplate
and
the
proper
opening
and
closing
speeds
are
given
in
the
breaker
instruction
book
.
FINAL
INSPECTION
After
the
mechanism
has
been
install
-
ed
with
all
mechanical
and
electrical
Fig
.
14
Right
Side
View
Adjustment
and
Final
Clearance
Checks
£
CLOSING
COIL
PLUNGER
N
"
j
*
.
g
Refer
to
Fig
.
9
and
“
F
”
,
Fig
.
15
.
The
pj
closing
coil
plunger
(
15
)
of
the
closing
-
p
coil
(
13
)
must
have
a
minimum
of
1
/
8
inch
free
travel
before
the
tang
of
the
5
;
closing
latch
is
contacted
.
If
this
free
travel
is
less
than
1
/
8
inch
,
remove
the
coil
and
file
the
plunger
(
18
)
,
Fig
.
8
B
,
until
it
has
1
/
8
inch
free
travel
.
f
/
Y
.
;
»
I
1
MANUAL
TRIP
LEVER
Refer
to
Fig
.
2
and
“
M
”
,
Fig
.
14
.
The
manual
trip
lever
(
19
)
,
Fig
.
2
,
must
be
adjusted
so
that
when
the
push
button
(
21
)
,
Fig
.
2
,
is
activated
the
mechanism
trips
and
the
69
device
(
17
)
,
Fig
,
2
,
is
operated
.
This
is
adjusted
by
loosening
the
locknut
(
83
)
,
Fig
.
12
,
and
turning
the
adjusting
bolt
(
82
)
,
Fig
.
12
,
in
the
proper
Fig
.
14
A
Sectional
View
Showing
Adjustment
P
19
Courtesy of NationalSwitchgear.com

GEK
7153
Spring
-
charged
Operating
Mechanism
Type
ML
-
14
-
0
connections
completed
,
make
the
follow
-
ing
inspection
and
test
:
'
Nt
'
y
*
>
0
)
&
A
.
See
that
the
mechanism
is
prop
-
^
erly
set
up
and
securely
fastened
to
the
breaker
framework
.
£
•
>
B
.
Review
the
following
adjust
-
-
meats
:
0
3
>
_
C
.
Check
that
all
bolts
,
nuts
and
screws
are
properly
tightened
2
and
that
all
washers
and
cotter
g
pins
are
in
place
with
cotter
pin
ends
effectively
bent
over
.
oo
o
CQ
D
.
Inspect
all
wiring
for
damage
2
during
installation
work
,
check
^
terminal
connections
for
loose
^
screws
,
and
test
for
possible
grounds
or
short
circuits
.
E
.
See
that
all
bearing
surfaces
and
^
<
D
P
4
o
Fig
.
14
B
Sectional
View
Showing
Adjustment
Q
O
i
I
F
L
i
.
!
!
wm
.
)
U
Fig
.
14
C
Sectional
View
Showing
Adjustment
H
Fig
.
15
Left
Side
View
Adjustment
and
Final
Clearance
Checks
20
Courtesy of NationalSwitchgear.com