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Pollution of Indoor Air More Serious than Outdoor Pollution
The pollution of indoor air was found to be more serious than that of the outdoor.
‘Green Seoul 21’published by Green Seoul Citizens’Committee of Seoul Metropolitan City
extensively highlighted the issues of indoor pollution, thus pointed out that the status of indoor
air pollution was becoming serious as it exceeded the level of outdoor pollution.
From March to June 1999, a study was carried out on the quality of air in indoor spaces of
Seoul and Busan. The study showed that the concentration of fine dust in tunnels,
underground lanes and platforms, etc. was higher than those of other indoor environments.
The level of fine dust in these regions was also found to exceed the indoor air quality standard
of 150mg/m3 specified by the Ministry of Environment.
In addition, indoor pollution in wintertime was found to exceed that of summertime by 25
times at the highest.
According to a research carried out on the level of volatile organic compounds (VOCs) in both
indoor and outdoor spaces of 10 residential houses and 4 offices located in Seoul, the
concentration of toluene and ethylene, etc. was found to be higher in the indoor spaces than
in the outdoor spaces by as much as 2.4 times. In case of newly constructed buildings, the
pollution level was found to be up to 4 times higher than that of other buildings.
Cigarette smoke is also being pointed out as a factor to cause indoor pollution. In addition to
carbon monoxide generated as a result of the incomplete combustion of cigarette, cigarette
smoke contains approximately 200 types of toxic substances including fine dust particles, etc.
and approximately 4000 types of chemicals. Thus, the research warns people of the ill effect
of cigarette smoke to be exerted even on non-smokers in the indoor space.
With the increase in high-rising apartment buildings, closed-type residential spaces and using
of compound chemical substances in furniture and architectural construction, the problem of
indoor pollution is becoming more serious than that of the outdoor space.
In order to minimize indoor pollution, special caution is required to maintain pleasant indoor
environment, such as to frequently ventilate and clean the indoor space as well as to refrain
from smoking in the closed space, etc.
Filter Replacement
How to Replace Filter
Time of Filter Cleaning and Replacement
SMD OPTION Filter & HEPA Filter: Remove plastic wrapping of new
filter and insert the new filter into place. (Check the direction of filter
insertion and the order of assembly.)
Order of Filter Assembly:
Oil Mist Filter →
SMD OPTION Filter →
HEPA Filter
Push filter case inwards and assemble filter cover.
※ Based on use at airflow level 1 for 24 hours per day.
Cycle Clean/ReplacementFilter
Dust Pollution
Detection Sensor
Once every 2 months
Once every 12 months
Once every 2~4 weeks
Once every 6 months
Cleaning
Replacing
Cleaning and washing
Replacing
Oil Mist Filter
HEPA Filter
SMD OPTION Filter