After 33 people in Xicheng got hot, Beijing once again stressed the correct use of air conditioning

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 After 33 people in Xicheng got hot, Beijing once again stressed the correct use of air conditioning


How to use the air conditioner correctly? Zeng Xiaopeng, director of the Beijing CDC, said at the 108th press conference of Beijing epidemic prevention and control yesterday that during the epidemic period, air conditioning should be cleaned before use. Central air conditioning should use professional disinfectants to eliminate the bacteria that are easy to cause respiratory tract infection. Do not turn on the air conditioner immediately from outdoor to indoor to prevent accidents caused by rapid contraction of cardio cerebral blood vessels. Natural ventilation should be maintained when using central air conditioning. At the same time, the air conditioning should be adjusted to 26 u2103, so as to keep the indoor and outdoor temperature difference small. The new crown has been ruled out for 33 people in Xicheng. The preliminary judgment is related to the use of central air conditioning.

In novel coronavirus pneumonia epidemic prevention and control, air conditioning is one of the key aspects of Beijing. At the beginning of February, Beijing CDC issued a special introduction to the use of central air conditioning during the epidemic, and introduced the disinfection methods of each part one by one. At the 103rd press conference on epidemic prevention and control in Beijing held on May 8th, Xu Hejian, Vice Minister of Publicity Department of Beijing municipal Party committee, stressed that effective and normalized defense measures should be implemented in public places such as supermarkets and restaurants in Beijing, and air conditioning should be used in public places and buildings in a scientific and healthy manner.

Attachment: [Beijing Disease Control reminder

During the epidemic prevention and control period, how should the central air conditioning be used?

1u3001 Before using the central air conditioning and ventilation system, it is necessary to know the category, air supply range and air intake of fresh air of the central air conditioning and ventilation system.

uff081uff09 For all air mode central air conditioning and ventilation system, the return air system shall be closed and operated with brand-new air, and it shall be operated for an extra hour before or after the air conditioning is started or shut down every day.

uff083uff09 The central air conditioning and ventilation system equipped with air purification and disinfection device (to remove particles, gaseous pollutants and microorganisms) shall be operated in strict accordance with the product instructions to ensure that the operation effect meets the requirements of national health standards.

3u3001 During the epidemic period, the filter, air outlet, air handling unit, surface cooler, heater (humidifier), condensate pan and other components of the central air conditioning ventilation system should be cleaned, disinfected or replaced every week.

uff081uff09 Immediately shut down the central air conditioning and ventilation system corresponding to the activity area of confirmed cases and suspected cases.

5u3001 Other considerations for using the central air conditioning ventilation system include:

uff081uff09 The use of central air conditioning and ventilation system shall ensure air circulation and adequate fresh air supply in all rooms of the building.

uff082uff09 During the epidemic period, windows should be opened first to adopt natural ventilation, and exhaust fans and other air extraction devices can be opened if conditions permit to enhance indoor air flow.

uff083uff09 Chlorine containing disinfectant has certain corrosiveness to metal. It is suggested that quaternary ammonium salt disinfectant should be selected preferentially for metal parts that need to be disinfected.

uff081uff09 Filter

It should be cleaned first and then disinfected. Quaternary ammonium salt disinfectant or 500mg / L chlorine containing disinfectant can be used for spraying or wiping disinfection.

uff082uff09 Air outlet, air handling unit

It should be cleaned first and then disinfected. Chemical disinfectant can be used for wiping and disinfecting. Quaternary ammonium salt disinfectant is preferred for metal parts, which is disinfected according to the concentration specified in the manual for surface disinfection. 500mg / L chlorine disinfectant or 0.2% Peroxyacetic acid disinfectant.

uff083uff09 Surface cooler, heater (humidifier)

It should be cleaned first and then disinfected. Quaternary ammonium salt disinfectants can be sprayed or wiped and sterilized, according to the instructions for disinfecting the surface for disinfection.

uff084uff09 Condensate pan

It should be cleaned first and then disinfected. Quaternary ammonium salt disinfectants can be sprayed or wiped and sterilized, according to the instructions for disinfecting the surface for disinfection.

uff085uff09 Air duct

It should be cleaned first and then disinfected. Disinfectants can be sterilized by chemical disinfectants, and quaternary ammonium salt disinfectants are selected as the first choice for metal tubes. Disinfection is prescribed according to the instructions. 500mg / L chlorine disinfectant or 0.2% Peroxyacetic acid disinfectant.

Appendix: basis of laws and regulations

1. Law of the peoples Republic of China on the prevention and control of infectious diseases (2013)

2. Order of the peoples Government of Beijing Municipality (No. 224), measures for the health management of air conditioning and ventilation system in Beijing bazaar

3. Beijing local standard (DB11 / 485-2011), hygienic management code for central air conditioning and ventilation system

4. Health industry standard of the peoples Republic of China (WS / t394-2012) health code for central air conditioning and ventilation system in public places

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5. Health industry standard of the peoples Republic of China (WS / t396-2012) code for cleaning and disinfection of central air conditioning and ventilation system in public places

Edited by fan Yijing and proofread by Wang Xin