Hitachi RAC-08LH1, Service Manual, Page: 27 / 76

– 25 –
!
!
MAINTENANCE
Cleaning and maintenance must be carried out when fi lter lamp. Before cleaning, stop operation
and switch off the power supply.
1. PRE-FILTER
Clean the pre- fi lter, as it removes dust inside the room. In case the pre- fi lter is full of dust, the air
fl ow will decrease and the cooling capacity will be reduced. Further, noise may occur. Be sure to
clean the pre- fi lter following the procedure below.
CAUTION
1
Open the front panel and remove the pre- fi lter
●
Gently lift and remove the air purifying fi lter
from the pre- fi lter frame.
2
Vacuum dust from the pre- fi lter and purifying
fi lters using vacuum cleaner. If there is too much
dust, rinse under running tap water and gently
brush it with soft bristle brush. Allow pre-
fi lters
to dry in shade.
3
●
Re-insert the air purifying fi lters to the fi lter
frame. Set the pre- fi lter with “FRONT” mark
facing front, and slot them into the original
state.
●
After attaching the pre- fi lters, push the front
panel at three arrow portions as shown in
fi gure and close it.
CAUTION
●
Do not wash with hot water at more than 40°C. The fi lters may shrink.
●
When washing it, shake off moisture completely and dry it in the shade; do not expose it directly
to the sun. The fi lters may shrink.
● Do not use detergent on the air purifying fi lters as some detergent may deteriorate the fi lter
electrostatic performance.
NOTE:
●
Air purifying fi lters should be cleaned every month or sooner if noticeable loading occurs. When
used overtime, it may loose its deodorizing function. For maximum performance, it is recommended
to replace it every 1 year depending on application requirements.