Siemens 5-GMI-350 - Functional Tests

Maintenance
&
Overhaul
t
Page
24
Fastener
Check
Inspect
all
fasteners
for
tightness
.
Both
lock
-
nuts
and
retain
-
ing
rings
are
used
.
Replace
any
fasteners
that
appear
to
have
been
frequently
removed
and
replaced
.
Manual
Spring
and
Contact
Erosion
Checks
Perform
the
Manual
Spring
Check
contained
in
the
section
describing
the
Installation
Check
and
Initial
Functional
Tests
.
The
key
steps
of
this
procedure
are
repeated
here
.
1
.
Insert
the
hand
charging
lever
into
the
manual
charge
handle
socket
at
the
front
of
the
operator
control
panel
.
Figure
45
shows
the
lever
inserted
.
Up
and
down
mo
-
tion
of
the
lever
charges
the
closing
springs
.
Continue
cranking
until
the
Charged
flag
appears
in
the
window
of
the
spring
indicator
.
end
of
tripping
spring
is
connected
to
the
jack
shaft
by
a
pull
rod
.
The
dashpot
is
connected
to
the
jack
shaft
operating
shaft
by
a
pushrod
linkage
.
Clean
the
entire
stored
energy
operator
mechanism
with
a
dry
,
lint
-
free
cloth
.
Check
all
components
for
evidence
of
excessive
wear
.
Place
special
attention
upon
the
closing
spring
cranks
and
the
various
pushrods
and
linkages
.
Figure
44
.
Front
View
of
Operator
Mechanism
.
Lubricate
all
non
-
electrical
moving
or
sliding
surfaces
with
a
light
coat
of
machine
oil
containing
a
rust
inhibitor
.
Bearings
and
Sliding
Surfaces
Use
Beacon
325
or
equivalent
Pivots
and
Articulated
Joints
Use
Tectyl
910
or
SAE
No
.
10
motor
oil
with
rust
inhibitors
.
Do
not
lubricate
the
piston
of
the
dashpot
assembly
.
Figure
45
.
Manual
Charging
of
Closing
Springs
.
2
.
Press
the
Close
(
green
)
pushbutton
.
The
contact
position
indicator
on
the
operator
control
panel
should
indicate
that
the
breaker
contacts
are
closed
.
3
.
Perform
the
contact
erosion
check
.
Contact
erosion
oc
-
curs
when
high
fault
currents
are
interrupted
or
when
the
vacuum
interrupter
is
nearing
its
contact
life
.
Determina
-
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