Hitachi RAD-25NH5, Service Manual, Page: 104 / 371

Ð 0201 Ð
HOW
TO
USE
MODEL
:RAI-25NH5,
RAI-35NH5,
RAI-50NH5
Ð2Ð
!
SAFETY
PRECAUTION
●
Please
read
the
ÒSafetyPrecautionÓ
carefullybefore
operating
the
unit
to
ensure
correct
usage
of
the
unit.
●
Payspecial
attention
to
signs
of
Ò
Warning
Óand
Ò
Caution
Ó.
The
ÒWarningÓ
section
contains
matters
which,
if
not
observed
strictly,
may
cause
death
or
serious
injury.
The
ÒCautionÓ
section
contains
matters
which
may
result
in
serious
consequences
if
not
observed
properly.
Please
observe
all
instructions
strictly
to
ensure
safety.
●
The
sign
indicate
the
following
meanings.
●
Please
keep
this
manual
after
reading.
WARNING
PRECA
UTIONS
DURING
INST
ALLA
TION
●
Do
not
reconstruct
the
unit.
Water
leakage,
fault,
short
circuit
or
fire
mayoccur
if
you
reconstruct
the
unit
byy
ourself.
●
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
byy
ourself.
●
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
maycause
electric
shock.
●
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
near
location
where
there
is
flammable
gas.
The
outdoor
unit
maycatch
fire
if
flammable
gas
leaks
around
it.
●
Please
ensure
smooth
flow
of
water
when
installing
the
drain
hose.
CAUTION
! !
PRECAUTIONS
DURING
SHIFTING
OR
MAINTENANCE
PRECA
UTIONS
DURING
OPERA
TION
●
Avoid
an
extended
period
of
direct
air
flow
for
your
health.
W A R N I N G
!
●
Should
abnormal
situation
arises
(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
if
you
need
to
remove
and
reinstall
the
unit.
Electric
shock
or
fire
may
occur
if
you
remove
and
reinstall
the
unit
yourself
improperly.
●
Do
not
insert
a
finger,
a
rod
or
other
objects
into
the
air
outlet
or
inlet.
As
the
fan
is
rotating
at
a
high
speed,
it
will
cause
injury.
Before
cleaning,
be
sure
to
stop
the
operation
and
turn
the
breaker
OFF.
●
During
thunder
storm,
disconnect
and
turn
off
the
circuit
breaker.
●
Do
not
use
anyconductor
as
fuse
wire,
this
could
cause
fatal
accident.
!
Make
sure
to
connect
earth
line.
Indicates
the
instructions
that
must
be
followed.
The
sign
in
the
figure
indicates
prohibition.
W A R N I N G
!
Ð3Ð
ENGLISH
PRECA
UTIONS
DURING
OPERA
TION
●
Do
not
attempt
to
operate
the
unit
with
wet
hands,
this
could
cause
fatal
accident.
●
When
operating
the
unit
with
burning
equipments,
regularlyventilate
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
mayaffect
the
working
of
apparatus
such
as
the
electric
kettle,
oven
etc.
●
Please
ensure
that
outdoor
mounting
frame
is
always
stable,
firm
and
without
defect.
If
not,
the
outdoor
unit
maycollapse
and
cause
danger.
●
Do
not
splash
or
direct
water
to
the
bodyof
the
unit
when
cleaning
it
as
this
maycause
short
circuit.
●
When
operating
the
unit
with
the
door
and
windows
opened,
(the
room
humidityis
alway
s
above
80%)
and
with
the
air
deflector
facing
down
or
moving
automaticallyfor
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.
●
If
the
amount
of
heat
in
the
room
is
above
the
cooling
or
heating
capabilityof
the
unit
(for
example:
more
people
entering
the
room,
using
heating
equipments
and
etc.),
the
preset
room
temperature
cannot
be
achieved.
●
This
appliance
is
not
intended
for
use
byy
oung
children
or
infirm
persons
unless
theyhave
been
adequatelysupervised
by
a
responsible
person
to
ensure
that
they
can
use
the
appliance
safely
.
●
Young
children
should
be
supervised
to
ensure
that
theydo
not
playwith
the
appliance.
●
Do
not
climb
on
the
outdoor
unit
or
put
objects
on
it.
●
Please
switch
off
the
unit
and
turn
off
the
circuit
breaker
during
cleaning,
the
high-speed
fan
inside
the
unit
maycause
danger.
●
Turn
off
the
circuit
breaker
if
the
unit
is
not
to
be
operated
for
a
long
period.
C A U T I O N
!
●
The
product
shall
be
operated
under
the
manufacturer
specification
and
not
for
anyother
intended
use.
●
Do
not
use
anyaerosol
or
hair
spray
s
near
the
indoor
unit.
This
chemical
can
adhere
on
heat
exchanger
fin
and
blocked
the
evaporation
water
flow
to
drain
pan.
The
water
will
drop
on
tangential
fan
and
cause
water
splashing
out
from
indoor
unit.
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