Hitachi RAD-25NH5, Service Manual, Page: 60 / 371

Ð 0201 Ð
Ð3Ð
Do
not
attempt
to
operate
the
unit
with
wet
hands,
this
could
cause
fatal
accident.
When
operating
the
unit
with
burning
equipments,
regularly
ventilate
the
room
to
avoid
oxygen
insufficiency.
Do
not
direct
the
cool
air
coming
out
from
the
air-conditioner
panel
to
face
household
heating
apparatus
as
this
may
affect
the
working
of
apparatus
such
as
the
electric
kettle,
oven
etc.
Be
sure
to
stop
the
operation
by
using
the
remote
controller
and
turn
off
the
circuit
breaker
during
cleaning,
the
high-speed
fan
inside
the
unit
may
cause
danger.
Do
not
place
plants
directly
under
the
air
flow
as
it
is
bad
for
the
plants.
Do
not
climb
on
the
outdoor
unit
or
put
objects
on
it.
Turn
off
the
circuit
breaker
if
the
unit
is
not
be
operated
for
a
long
period.
When
operating
the
unit
with
the
door
and
windows
opened,
(the
room
humidity
is
always
above
80%)
and
with
the
air
deflector
facing
down
or
moving
automatically
for
a
long
period
of
time,
water
will
condense
on
the
air
deflector
and
drips
down
occasionally.
This
will
wet
your
furniture.
Therefore,
do
not
operate
under
such
condition
for
a
long
time.
Do
not
touch
the
air
outlet,
bottom
surface
and
aluminum
fin
of
the
outdoor
unit. You
may
get
hurt.
Indoor
unit
cleaning
must
be
performed
by
authorized
personnel
only.
Consult
your
sales
agent.
Using
a
commercially
available
detergent
or
similar
can
damage
the
plastic
parts
or
clog
the
drain
pipe,
causing
water
to
drip
with
potential
electric
shock
hazard.
If
the
amount
of
heat
in
the
room
is
above
the
cooling
or
heating
capability
of
the
unit
(for
example:
more
people
entering
the
room,
using
heating
equipments
and
etc.),
the
preset
room
temperature
cannot
be
achieved.
Do
not
touch
the
refrigerant
pipe
and
connecting
valve.
Burns
may
result.
The
product
shall
be
operated
under
the
manufacturer
specification
and
not
for
any
other
intended
use.
Please
ensure
that
outdoor
mounting
frame
is
always
stable,
firm
and
without
defect.
If
not,
the
outdoor
unit
may
collapse
and
cause
danger.
Do
not
wash
the
unit
with
water
or
place
a
water
container
such
as
a
vase
on
the
indoor
unit.
Electrical
leakage
could
be
present
and
cause
electric
shock.
PROHIBITION
DON'T
WET
PROHIBITION
PROHIBITION
PROHIBITION DONÕT
TOUCH
DONÕT
TOUCH
"OFF"
PROHIBITION
STRICTLY
OBSERVE
PRECAUTIONS
PROHIBITION
"OFF"
PROHIBITION
PROHIBITION PROHIBITION
Ð2Ð
Please
read
the
ÒSafety
Precaution
Ócarefully
before
operating
the
unit
to
ensure
correct
usage
of
the
unit.
Pay
special
attention
to
signs
of
Ò
!"#$#%
Ó
and
Ò
!&'$(#
Ó.
The
ÒWarning
Ó
section
contains
matters
which,
if
not
observed
strictly,
may
cause
death
or
serious
injury.
The
ÒCaution
Ó
section
contains
matters
which
may
result
in
serious
consequences
if
not
observed
properly.
Please
observe
all
instructions
strictly
to
ensure
safety.
The
signs
indicate
the
following
meanings.
(The
following
are
examples
of
signs.)
Please
keep
this
manual
after
reading.
Should
abnormal
situation
arise
(like
burning
smell),
please
stop
operating
the
unit
and
turn
off
the
circuit
breaker.
Contact
your
agent.
Fault,
short
circuit
or
fire
may
occur
if
you
continue
to
operate
the
unit
under
abnormal
situation.
Please
contact
your
agent
for
maintenance.
Improper
self
maintenance
may
cause
electric
shock
and
fire.
Please
contact
your
agent
ifyou
need
to
remove
and
reinstall
the
unit.
Electric
shock
or
fire
may
occur
if
you
remove
and
reinstall
the
unit
yourself
improperly.
)
This
sign
in
the
figure
indicates
prohibition.
Indicates
the
instructions
that
must
be
followed.
Do
not
reconstruct
the
unit.
Water
leakage,
fault,
short
circuit
or
fire
may
occur
if
you
reconstruct
the
unit
by
yourself. Please
ask
your
sales
agent
or
qualified
technician
for
the
installation
of
your
unit.
Water
leakage,
short
circuit
or
fire
may
occur
if
you
install
the
unit
by
yourself.
Please
use
earth
line.
Do
not
place
the
earth
line
near
water
or
gas
pipes,
lightning-conductor,
or
the
earth
line
of
telephone.
Improper
installation
of
earth
line
may
cause
electric
shock. Be
sure
to
use
the
specified
piping
set
for
R410A.
Otherwise,
this
may
result
in
broken
copper
pipes
or
faults.
A
circuit
breaker
should
be
installed
depending
on
the
mounting
site
of
the
unit.
Without
a
circuit
breaker,
the
danger
of
electric
shock
exists.
Do
not
install
the
unit
near
location
where
there
is
flammable
gas.
The
outdoor
unit
may
catch
fire
if
flammable
gas
leaks
around
it.
Piping
shall
be
suitable
supported
with
a
maximum
spacing
of
1m
between
the
supports.
Please
ensure
smooth
flow
of
water
when
installing
the
drain
hose.
Make
sure
that
a
single
phase
230V
power
source
is
used.
The
use
of
other
power
sources
may
cause
electrical
components
to
overheat
and
lead
to
fire.
PROHIBITION
CONNECT
EARTH
LINE
PROHIBITION PROHIBITION
"OFF"
Avoid
an
extended
period
of
direct
air
flow
for
your
health.
Do
not
put
objects
like
thin
rods
into
the
panel
of
blower
and
suction
side
because
the
high-speed
fan
inside
may
cause
danger.
Do
not
use
any
conductor
as
fuse
wire,
this
could
cause
fatal
accident.
During
thunder
storm,
please
stop
operating
the
unit
and
turn
off
the
circuit
breaker.
Spray
cans
and
other
combustibles
should
not
be
located
within
a
meter
of
the
air
outlets
of
both
indoor
and
outdoor
units.
As
a
spray
can
Õs
internal
pressure
can
be
increased
by
hot
air,
a
rupture
may
result.
PROHIBITION PROHIBITION PROHIBITION
PROHIBITION
"OFF"
MODEL
:RAD-25NH5,
RAD-35NH5
- 60 -