Siemens GM-SG

Maintenance
The list
of
tasks
in
Table
7
does
not
represent
an
exhaustive
survey
of
maintenance
steps
necessary
to
ensure
safe
operation
of
the
equipment
.
Particular
applications
may
require
further
procedures
.
Should
further information
be desired
or
should
particular
problems
arise
which
are
not
covered
sufficiently
for
the Purchaser
'
s
purposes
,
the
matter
should be
referred
to
Siemens
at
1
-
800
-
347
-
6659
(
919
-
365
-
2200
outside
the
U
.
S
.
)
.
Table
7
.
Maintenance
I
asks
1
.
Before
any
maintenance work is
performed
within
primary
compartments
,
make
certain
that the
equipment
is
completely
de
-
energized
,
tested
,
grounded
,
tagged
or
locked
out
and released
for
work
in
an
authorized
manner
.
2
.
Before
starting
work
on
the
switchgear
,
the
follow
-
ing
should be
completed
on
any
equipment
that
will
affect
the
area
of
the work
:
A
.
Disable
remote
control and automatic
transfer
schemes
.
B
.
De
-
energize
all direct
and
backfeed
power
and control
sources
,
test
and
ground
.
C
.
Disconnect all
voltage
and control
power
transformers
.
D
.
Open
all disconnects
.
3
.
Include
the
following
items
in
your
inspection procedure
:
A
.
Check
general
condition
of
switchgear
installation
.
B
.
Inspect
switchgear
interior
for
accumulation
of
dust
,
dirt
or
any
foreign
matter
.
C
.
Clean
air
filters
by washing
in
any
mild
household
detergent
.
D
.
Examine
indicating
lamps
and
replace
as
required
.
E
.
Check
terminal block
contacts
for
loose connections
.
F
.
Check
instrument and control switches and
inspect
their
contacts
.
G
.
Check
for
proper
condition
of
instrument
transformers
.
Replace
burned
out
fuses
,
if
any
.
Check
primary
and
secondary
connections
.
H
.
Remove
dust
from
all insulators and insulation
.
I
.
Inspect
bus bars
and
connections
for
proper
condition
.
If
bus bars
are
overheating
check
for
poor
or
loose connections
or
for
overload
.
J
.
Examine automatic shutters
for
proper
operation
.
K
.
Examine all
safety
interlocks
.
L
Perform
maintenance
of
circuit
breakers
as
outlined
in
circuit breaker instruction manual
.
M
.
Check
space
heaters and thermostat
(
if
equipped
)
for
proper
operation
.
N
.
Maintain other
equipment
in
accordance
with
the
respective
instruction book
requirements
.
O
.
Lubricate mechanisms
,
contacts
,
and other
moving
components
.
P
.
Replace
,
reassemble
,
re
-
insulate
,
return
all
items
to
proper
operating
conditions and
remove
grounds
prior
to
energization
.
A
DANGER
The
use
of
unauthorized
parts
in
the
repair
of
the
equipment
,
or
tampering by
unqualified
personnel
will
result
in
dangerous
conditions which
will
cause
death
,
serious
injury
or
equipment
damage
.
Follow all
safety
instructions
contained herein
.
Lubrication
It
is essential that
switchgear
be lubricated
carefully
and
properly
to
guard against
corrosion and
to
insure
that all
operating
parts
work
freely
.
Old
grease
should
be
removed
annually
and
parts
relubricated
.
Relubricate
at
more
frequent
intervals
if
required
with
Siemens
lubricant
Part
No
.
18
-
671
-
001
-
501
.
Moving
Parts
Lubricate shutter
guide
,
bearings
,
rollout
fuse
truck
moving
parts
,
etc
.
,
with
dry
spray
lubricant
Siemens
Part
No
.
15
-
172
-
816
-
058
.
Note
:
Use
of
lubricant
not
suitable
for
the
application
will
make the mechanism
very
difficult
to
operate
.
Electrical
Contacts
A
DANGER
Hazardous
voltages
.
Will
cause
death
,
serious
injury
,
and
property
damage
.
Do
not
open
shutters
unless both line
/
load
and
bus
are
first
de
energized
.
Lubricate
stationary
silver
-
surfaced
contacts
with
electrical
contact
lubricant
Part No
.
15
-
172
-
791
-
233
prior
to
use
,
as
follows
:
1
.
Wipe
contacts
clean
.
2
.
Apply
lubricant
to contact
surfaces
.
3
.
Wipe
off
excess
lubricant
,
leaving
a
film
.
Avoid
getting
lubricant
on
insulation
.
48
Courtesy of NationalSwitchgear.com