Lenovo ThinkCentre M52 (English) Quick reference guide - Page 13

Operating, environment

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functioning or when the battery is charging. Your computer produces some heat during normal operation. Extended contact with the body could cause discomfort or, potentially, a skin burn. v Do not operate your computer or charge the battery near flammable materials or in explosive environments. v Ventilation slots, fans, and/or heat sinks are provided with the product for safety, comfort, and reliable operation. These features might inadvertently become blocked by placing the product on a bed, sofa, carpet, or other flexible surface. Never block, cover or disable these features. You should inspect your desktop computer for dust accumulation at least once every three months. Before inspecting your computer, turn off the power and unplug the computer's power cord from the electrical outlet; then remove any dust from vents and perforations in the bezel. If you notice external dust accumulation, you should also examine and remove dust from the inside of the computer including heat sink inlet fins, power supply vents, and fans. Always turn off and unplug the computer before opening the cover. If possible, avoid operating your computer within 2 feet of high-traffic areas. If you must operate your computer in or near a high-traffic area, you should inspect and, if necessary, clean your computer more frequently. For your safety and to maintain optimum computer performance, always follow these basic precautions with your desktop computer: v Keep the cover closed whenever the computer is plugged in. v Regularly inspect the outside of the computer for dust accumulation. v Remove dust from vents and any perforations in the bezel. More frequent cleanings might be required for computers in dusty or high-traffic areas. v Do not block or restrict airflow into the front of the computer. v Do not block the airflow vents on the back of the computer. v Do not store or operate your computer inside furniture, as this might increase the risk of overheating. v Airflow temperatures into the computer should not exceed 35° C (95° F). 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. Important safety information xi

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functioning
or
when
the
battery
is
charging.
Your
computer
produces
some
heat
during
normal
operation.
Extended
contact
with
the
body
could
cause
discomfort
or,
potentially,
a
skin
burn.
v
Do
not
operate
your
computer
or
charge
the
battery
near
flammable
materials
or
in
explosive
environments.
v
Ventilation
slots,
fans,
and/or
heat
sinks
are
provided
with
the
product
for
safety,
comfort,
and
reliable
operation.
These
features
might
inadvertently
become
blocked
by
placing
the
product
on
a
bed,
sofa,
carpet,
or
other
flexible
surface.
Never
block,
cover
or
disable
these
features.
You
should
inspect
your
desktop
computer
for
dust
accumulation
at
least
once
every
three
months.
Before
inspecting
your
computer,
turn
off
the
power
and
unplug
the
computer’s
power
cord
from
the
electrical
outlet;
then
remove
any
dust
from
vents
and
perforations
in
the
bezel.
If
you
notice
external
dust
accumulation,
you
should
also
examine
and
remove
dust
from
the
inside
of
the
computer
including
heat
sink
inlet
fins,
power
supply
vents,
and
fans.
Always
turn
off
and
unplug
the
computer
before
opening
the
cover.
If
possible,
avoid
operating
your
computer
within
2
feet
of
high-traffic
areas.
If
you
must
operate
your
computer
in
or
near
a
high-traffic
area,
you
should
inspect
and,
if
necessary,
clean
your
computer
more
frequently.
For
your
safety
and
to
maintain
optimum
computer
performance,
always
follow
these
basic
precautions
with
your
desktop
computer:
v
Keep
the
cover
closed
whenever
the
computer
is
plugged
in.
v
Regularly
inspect
the
outside
of
the
computer
for
dust
accumulation.
v
Remove
dust
from
vents
and
any
perforations
in
the
bezel.
More
frequent
cleanings
might
be
required
for
computers
in
dusty
or
high-traffic
areas.
v
Do
not
block
or
restrict
airflow
into
the
front
of
the
computer.
v
Do
not
block
the
airflow
vents
on
the
back
of
the
computer.
v
Do
not
store
or
operate
your
computer
inside
furniture,
as
this
might
increase
the
risk
of
overheating.
v
Airflow
temperatures
into
the
computer
should
not
exceed
35°
C
(95°
F).
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.
Important
safety
information
xi