Hitachi RAI-50PPD Installations- Und Betriebshandbuch Seite 13

MAINTENANCE
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N O T E
• Do not use hot water more than 50ºC. The air filter may be deformed
by heat.
• Do not dry the air filter with an open fire, a dryer or a heater. The air
filter may be deformed.
4 Attach the air filter.
After the air filter is dried, attach it correctly to the air inlet
grille.
5 Close the air inlet grille.
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N O T E
• Be sure to attach the air filter. If the indoor unit is operated without the
air filter, it may cause malfunction of the indoor unit.
• Make sure that the air inlet grille is securely locked with the knobs. If
it is not properly locked, it might open suddenly, resulting in the grille
falling.
5.1.2 Removing, attaching and cleaning air
inlet grille
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N O T E
• Wipe the air inlet grille with a soft cloth soaked in lukewarm water
and squeezed.
• Use a soft cloth to clean the air inlet grille and the air panel. If
benzine, thinner or detergent (with surfactant) is used to cleaning, the
resin part may get discoloured or deformed. In addition, note that the
parts around the air outlet (louvre, guide, etc.) may be damaged if an
excessive force is applied.
The air inlet grille can be removed and cleaned.
1 Open the air inlet grille.
While sliding the knobs on both side of the air inlet grille in
the arrow direction, open the air inlet grille.
Air inlet grille
5.2 MAINTENANCE AT BEGINNING AND END OF USE
At beginning of use
• Remove obstacles around the air inlet grilles and the air
outlet of the indoor unit and outdoor unit.
• Check that the air filter is not clogged with dust and dirt.
At end of use
• Clean the air filter, the air inlet grille and the air panel.
5 PMML0477 rev.0 - 07/2017
2 Remove the air inlet grille.
• Remove the supporting string from the air panel.
• Open the air inlet grille at an approximately 45° angle from
the air panel surface.
• Tilting the air inlet grille, lift it up to remove it.
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N O T E
Although the air inlet grille can be opened up to 90°, it cannot be removed
from the air panel at the angle. Tilt it at a 45° angle when removing it.
3 Clean the air inlet grille.
4 Attach the air inlet grille.
Attach the air inlet grille in the reverse procedure to
removing.
Knobs
Supporting String
Supporting
string
Tilting the air inlet grille, lift it up to remove it
Ceiling
Air panel
45
o