DC Inverter Cassette Type Unit
3
6
7.
2 Routine Maintenance
Only a qualified service person is allowed to perform maintenance.
Before accessing to terminal devices, all power supply circuits must be disconnected.
Do not use water or air of 50°C or higher for cleaning air filters and outside panels.
Notes:
① .
Do not operate the air conditioner with the filter uninstalled, otherwise dust would come into
the unit.
② .
Do not remove the air filter except for cleaning. Unnecessary handling may damage the filter.
③ .
Do not clean the unit with gasolene, benzene, thinner, polishing powder or liquid insecticide,
otherwise it would cause discoloration and deformation of the unit.
④ .
Do not wet the indoor unit in case of electric shock or fire hazard.
Increase the frequency of cleaning if the unit is installed in a room where the air is extremely
contaminated.(As a yardstick for yourself, consider cleaning the filter once a half year.)
If dirt becomes impossible to clean, change the air filter.
How to clean the air filter
1. Open the air inlet grille
(
a
). How to open the panel grille of the
24K~
42K
cassette type unit
i)
Push
the buckle as
shown
in the
figure.
ii)
Release the screws under buckles by
a screwdriver.
iii)
Push the fastener and open the panel
grille.
Remove the screw
Push the fastener
(
b
). How to open the panel grille of the
18Kcassette type unit
i)
Remove the screws by a screwdriver
as shown in the picture.
ii)
Push those two fasteners and open
the panel grille.
Remove the screw
Push the fastener
