Coway AP-2505CH Time of Filter Cleaning and Replacement, Air and Health, Cycle, Clean/Replacement

Filter Replacement

How to Replace Filter

�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.

Time of Filter Cleaning and Replacement

Filter	Cycle	Clean/Replacement
Dust Pollution	Once every 2 months	Cleaning
Detection Sensor
Oil Mist Filter	Once every 2~4 weeks	Cleaning and washing
SMD OPTION Filter	Once every 6 months	Replacing
HEPA Filter	Once every 12 months	Replacing

※Based on use at airflow level 1 for 24 hours per day.

25

Air and Health

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.

26

Caution

How to Use Self Diagnosis Customer Service