Hitachi RAS-D10CDK Instruction Manual page 17

MAINTENANCE OF THE UNITS
CAUTION
Ensure that the unit is not in operation and all power supply has been disconnected before cleaning the
units.
Dust Filter Screen
Dust filter screens are installed to remove the indoor dust particles hence they should be kept clean at all times.
They should be cleaned at each machine operation cycle of approximately 100 hours. Excessive dust collected at
the dust fi lter screen will block the air fl ow, reduce the cooling capability and could produce noise. Therefore the
dust filter screen should be cleaned as per instructions given below:
Cleaning Instructions
(1) Removing the dust filter screen
•
While holding both edges of the front panel, open up and lift the front panel and push in to park at the secured
position
•
Slightly lift up the dust filter screen, release the latch clips [ places] located at the bottom of the front cabinet
and move the dust filter screen downwards to remove it from the unit
() Use a vacuum cleaner to vacuum clean the dust accumulated at the dust filter screen. If the accumulated dust
is too much to be removed by vacuum cleaning, apply mild detergent and fl ush the dust from the dust fi lter
screen with water. After thorough rinsing, leave the dust filter screen at a cool shaded place to dry.
() Re-install the dust filter screen to its original position (With " FRONT " marker facing front). Slightly lift up the
opened front panel and close it by returning it to its original position
() Each year before using the air conditioner unit, clean the heat exchanger (evaporator) with a fi ne soft brush or
a vacuum cleaner and take care to avoid damaging the evaporator fins
Front panel
Dust filter screen
CAUTION
•
Do not use hot water (0 ° C and above) to rinse the dust filter screen, otherwise the screen will warp and
get distorted. After rinsing, shake the dust fi lter screen to rid off all remaining water droplets and place it at a
cool shaded place to dry. Avoid placing the dust fi lter screen under direct sunlight, otherwise the screen will
warp and get distorted.
Do not operate the air conditioner unit without the dust filter screen installed, otherwise the ingress of dust
into the air conditioner unit will cause breakdowns.
Front panel
Latch clip
- 1 -
Front cabinet