Operating environment, Electrical current safety information, Operating – Lenovo 6491 User Manual
Page 13: Environment, Electrical, Current, Safety, Information
v
Do
not
use
non-desktop
air
filtration
devices.
Operating
environment
The
optimal
environment
in
which
to
use
your
computer
is
10°C-35°C
(50°F-95°F)
with
humidity
ranging
between
35%
and
80%.
If
your
computer
is
stored
or
transported
in
temperatures
less
than
10°C
(50°F),
allow
the
cold
computer
to
rise
slowly
to
an
optimal
operating
temperature
of
10°C-35°C
(50°F-95°F)
before
use.
This
process
could
take
two
hours
in
extreme
conditions.
Failure
to
allow
your
computer
to
rise
to
an
optimal
operating
temperature
before
use
could
result
in
irreparable
damage
to
your
computer.
If
possible,
place
your
computer
in
a
well-ventilated
and
dry
area
without
direct
exposure
to
sunshine.
Keep
electrical
appliances
such
as
an
electric
fan,
radio,
high-powered
speakers,
air
conditioner,
and
microwave
oven
away
from
your
computer
because
the
strong
magnetic
fields
generated
by
these
appliances
can
damage
the
monitor
and
data
on
the
hard
disk
drive.
Do
not
place
any
beverages
on
top
of
or
beside
the
computer
or
other
attached
devices.
If
liquid
is
spilled
on
or
in
the
computer
or
an
attached
device,
a
short
circuit
or
other
damage
might
occur.
Do
not
eat
or
smoke
over
your
keyboard.
Particles
that
fall
into
your
keyboard
can
cause
damage.
Electrical
current
safety
information
Danger
Electrical
current
from
power,
telephone,
and
communication
cables
is
hazardous.
To
avoid
a
shock
hazard:
v
To
prevent
possible
shock
hazard,
do
not
use
your
computer
during
a
lightning
storm.
v
Do
not
connect
or
disconnect
any
cables
or
perform
installation,
maintenance,
or
reconfiguration
of
this
product
during
an
electrical
storm.
v
Connect
all
power
cords
to
a
properly
wired
and
grounded
electrical
outlet.
v
Connect
to
properly
wired
outlets
any
equipment
that
will
be
attached
to
this
product.
v
When
possible,
use
one
hand
only
to
connect
or
disconnect
signal
cables.
v
Never
turn
on
any
equipment
when
there
is
evidence
of
fire,
water,
or
structural
damage.
v
Disconnect
the
attached
power
cords,
telecommunications
systems,
networks,
and
modems
before
you
open
the
device
covers,
unless
instructed
otherwise
in
the
installation
and
configuration
procedures.
v
Connect
and
disconnect
cables
as
described
in
the
following
table
when
installing,
moving,
or
opening
covers
on
this
product
or
attached
devices.
Important
safety
information
xi