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6. Maintenance Method
Daily Inspection and Maintenance
Caution
Filter cleaning
● Filter element
The clogging standard of filter mesh is that the indication on the filter differential pressure gauge is
about twice of ordinary indication.
When the filter is clogged, open the left side door of the unit, open the filter case cover, tear off the
filter seal sticker, and then loosen and remove the butterfly nut that fix the filter. When assembling,
please paste the accessorial filter seal sticker in the last step, after pasting, the concave of filter will
be completely hidden.
To remove clogging of filter mesh, beat lightly to remove dusts off. (The filter cannot be washed by
water.) Replace with a new one if clogging occurs too often after cleaning.
● Filter case
Remove the filter element and remove dusts attached inside the filter case or on the bottom by
suctioning with an electric cleaner or by wiping out with a cloth. During this work, take care so that
dusts will not fall on the pipe port on the bottom.
● Freezer filter
There is a filter for the freezer capacitor at the lower right position of the front of the unit. The filter
cover is held with magnets. Lightly pull it toward you by hand to remove it and then clean the filter.
To clean, gently wash it with water or remove dusts using a cleaner. When capacitor fins at the
deep back of the filter are clogged with dusts, remove them with a cleaner.
● For the oxygen filter sensor
Open the door at the left side of the unit and remove the filter fixed to the front pole.
You can remove the filter holding screws by hand. (See P.9 of the operation manual.
)
Rough replacement interval of the filter shall be about six months.
Filter seal sticker
Accessorial filter seal
sticker
Butterfly nut