Hitachi Summit RAC-18YH6, Service Manual, Page: 14 / 96

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RAS_AW_001-014en 2008.1.29, 9:39 12
–
16
–
MAINTENANCE
Cleaning and maintenance m
ust be carr
ied out only b
y qualified ser
vice personal.
Bef
ore cleaning,
stop oper
ation and s
witch off the po
w
er supply
.
CA
UTION
1.
AIR FIL
TER
When the filter indicator lamp comes on, be sure to clean the filter
. By doing so
, the po
w
er r
ates are
sa
v
ed.
In case the air filter is full of dust, the air flo
w will decrease and the cooling capacity will be
reduced.
Fur
ther
, noise ma
y occur
. Be sure to clean the filter f
ollo
wing the procedure belo
w
.
PR
OCEDURE
1
Open the front panel carefully and remo
v
e the filter
.
2
V
acuum dust from the air filter using v
acuum cleaner
.
If there is too m
uch dust, w
ash the filter with a detergent
and r
inse it thoroughly
. After that, dr
y it in the shade
.
3
•
Set the filter with
“FR
ONT
” mar
k f
acing front, and
slot them into the or
iginal state
.
•
After attaching the filters
, push the front panel at
three arro
w por
tions as sho
wn in figure and close
it.
•
Do not w
ash with hot w
ater at more than 40
°C
. The filter ma
y shr
ink.
•
When w
ashing it, shak
e off moisture completely and dr
y it in the shade;
do not e
xpose it directly
to the sun.
The filter ma
y shr
ink.
•
Don't oper
ate the unit without filter
. F
ault ma
y occur if y
ou contin
ue
.
CA
UTION
–
17
–
2.
CLEANING OF FR
ONT P
ANEL
•
Remo
v
e the front panel and w
ash with clean w
ater
.
W
ash it with a soft sponge
.
After using neutr
al detergent, w
ash thoroughly with
clean w
ater
.
•
When front panel is not remo
v
ed, wipe it with a soft
dr
y cloth.
Wipe the remote controller thoroughly with
a soft dr
y cloth.
•
Wipe the w
ater thoroughly
.
If w
ater remains at indicators or signal receiv
er of
indoor unit, it causes troub
le
.
Method of remo
ving the front panel.
Be sure to hold the front panel with both hands to detach and attach it.
CA
UTION
Remo
ving the F
ront P
anel
Attaching the F
ront P
anel
•
When the front panel is fully opened with both hands
, push the r
ight ar
m to the inside to
release it, and while closing the front panel slightly
, put it out f
orw
ard.
•
Mo
v
e the shafts of the left and r
ight ar
ms into
the
steps
in the unit and securely inser
t them
into the holes
.
Shaft
Step
Hole
•
Do not splash or direct w
ater to the body of the unit when cleaning it as
this ma
y cause shor
t circuit.
•
Ne
v
er use hot w
ater (abo
v
e 40
°C), benzine
, gasoline
, acid, thinner or a
br
ush, because the
y will damage the plastic surf
ace and the coating.
3.
MAINTENANCE A
T BEGINNING OF LONG OFF PERIOD
•
Run the unit b
y setting the oper
ation mode to
(F
AN) and the f
an speed to HI f
or about half a da
y
on a fine da
y, and dr
y the whole of the unit.
•
Switch off the po
w
er plug or tur
n off the circuit break
er
.
B
E
N
Z
IN
E
T
H
IN
N
E
R
A C
I
D
Air
Blow