Hitachi   RAK-18NH6AS, Service Manual

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MAINTENANCE
Cleaning and maintenance must be carried out only by qualifi ed service personal.
Before cleaning, stop operation and switch off the power supply.
1. AIR FILTER
Clean the air fi lter, as it removes dust inside the room. In case the air 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 fi lter following the procedure below.
CAUTION
1
Open the front panel and remove the fi lter
● Gently lift and remove the air cleansing fi lter
from the air fi lter frame.
2
Vacuum dust from the air fi lter and air cleans-
ing filter using vacuum cleaner. If there is
too much dust, air fi lter only rinse under running
tap water and gently brush it with soft bristle
brush. Allow fi lters to dry in shade.
3
● Re-insert the air cleansing fi lter to the fi lter
frame. Set the fi lter with “FRONT” mark facing
front, and slot them into the original state.
● After attaching the 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 lter 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 lter may shrink.
● Do not use detergent on the air cleansing fi lter as some detergent may deteriorate the fi lter
electrostatic performance.
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