Siemens 81000 90H35

Installation
Page
7
Make
sure
that
all
current
-
carrying
parts
outside
the
contactor
have
adequate
current
-
carrying
capacity
and
are
correctly
insulated
in
accordance
with
the
requirements
of
the
National
Electrical
Code
(
NEC
)
.
All
electrical
connections
should
be
made
carefully
per
the
wiring
diagram
furnished
with
the
equipment
.
Tighten
all
lugs
to
recommended
torque
values
.
Use
recommended
crimping
tools
only
if
crimp
lugs
are
supplied
.
Adjusting
the
Electromanetic
Drive
+
®
Max
.
7
mm
4100
ft
.
Above
S
.
L
.
to
8200
ft
.
Above
S
.
L
.
650
ft
.
Below
S
.
L
.
to
4100
ft
.
Above
S
.
L
.
Altitude
Setting
4100
ft
.
Below
S
.
L
.
to
650
ft
.
Above
S
.
L
.
Vacuum
contactors
are
sensitive
,
to
a
certain
degree
,
to
the
altitude
at
the
installation
site
.
This
is
due
to
the
fact
that
atmospheric
pressure
assists
in
closing
the
main
contacts
by
exerting
force
on
the
bellows
at
the
moveable
end
of
the
vacuum
bottles
.
Since
this
force
is
proportional
to
the
dif
-
ference
between
internal
bottle
pressure
and
external
atmos
-
pheric
pressure
,
the
contactor
’
s
main
return
springs
must
be
adjusted
slightly
when
the
contact
is
to
be
located
at
extreme
distances
above
or
below
sea
level
.
After
suitable
adjustment
,
the
90
H
3
vacuum
contactors
can
be
operated
at
the
following
site
altitudes
:
From
4100
ft
.
below
S
.
L
.
to
650
ft
.
above
S
.
L
.
From
650
ft
.
below
S
.
L
.
to
4100
ft
.
above
S
.
L
.
From
4100
ft
.
above
S
.
L
.
to
8200
ft
.
above
S
.
L
.
The
vacuum
contactors
are
set
at
the
factory
for
a
site
altitude
from
650
ft
.
below
sea
level
to
4100
ft
.
above
sea
level
.
Figure
5
.
Altitude
Adjustment
Information
Plate
Adjustment
on
the
bottom
of
the
vacuum
contactor
is
neces
-
sary
if
the
site
altitude
is
different
from
that
set
at
the
factory
.
See
Figure
4
.
•
Press
in
both
setting
plugs
(
9.2
)
using
a
screwdriver
.
•
Adjust
each
setting
plug
to
the
site
altitude
accord
-
ing
to
the
instruction
plate
.
See
Figure
5
.
Latched
Contactors
(
Refer
to
Figure
6
)
The
trip
rod
on
the
latched
contactor
is
locked
in
the
shipping
position
by
a
wire
tie
as
shown
below
.
Remove
this
ty
-
rap
before
placing
contactor
in
operation
allowing
the
trip
rod
to
extend
fully
.
All
latched
contactors
are
shipped
with
a
threaded
stud
extending
3.62
inches
(
92
mm
)
from
the
end
of
the
trip
rod
.
If
the
contactor
is
to
be
used
in
the
bottom
compartment
of
the
controller
cubicle
,
this
stud
should
be
left
in
place
.
If
the
contactor
will
be
used
in
the
middle
or
top
compartments
,
the
stud
and
associated
nut
and
lockwasher
must
be
removed
.
3.62
"
(
92
mm
)
Trip
Rod
i
la
(
t
T
I
'
o
Bolt
/
/
Nut
/
O
Lockwasher
r
Wire
Tie
(
Remove
Prior
to
Installation
)
Figure
4
.
Altitude
Adjustment
Figure
6
.
Latched
Contactor
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