In the absence of confirmed cases, suspected cases and close contact with the case, the family central air conditioning should be able to operate normally, but pay attention to open more Windows to ventilate, wash hands frequently and carry out necessary disinfection. Next, follow the central air conditioning maintenance Xiaobian to look at Gree household central air conditioning cleaning and disinfection and use guidelines.

Compared with public buildings, the design of household central air conditioning system is relatively simple, the families do not affect each other, and if there is no potential infection in a family, it can be used normally. If a family member is a suspected case and needs to be properly isolated for observation, it is recommended that the isolated person live in a room with exhaust function, relatively speaking, this can ensure that the wind in the family flows from other rooms to the room, and minimize the situation of cross-infection within the family. It should also be noted that, drawing on the experience of Amoy Gardens in Hong Kong during the SARS period, residents should pay attention to maintenance when using water pipes and floor drains, and do a good job of sealing water seals and floor drains to minimize the risk of cross-infection between different floors.

First of all, all the water seals in the home should do a good job of sealing, including wash basin drain, floor drain, shower drain, bathtub drain, vegetable basin drain, washing machine drain. Users need to check whether all drainage pipes have water traps. If the bathtub and washing machine do not have or it is difficult to determine the water traps, it is recommended to plug the bathtub drain when not in use, pull out the washing machine drain pipe, and then connect it when in use. Check whether the floor drain in the home is sealed, especially to clean the hair in the bathroom floor drain, if you can not determine the depth of the water seal, you can use a plastic bag with water to plug the floor drain. The toilet chassis can see some water storage, water storage usually must flood the drainage pipe, and pay attention to the water can not have bubbles emerge, there are both cases need to be repaired in time. Secondly, wash hands frequently at home and disinfect sanitary utensils frequently.

First, the principle of use

During the epidemic prevention and control period, the use of centralized air conditioning and ventilation systems should be suspended in principle, and the specific use can be implemented in accordance with the following principles.

1. The use of centralized air conditioning and ventilation systems should be suspended in crowded places.

2. If the central air conditioning and ventilation system needs to be used in non-public places, the central air conditioning and ventilation system should be cleaned and disinfected regularly.

3. Other places that need to continue to use central air conditioning ventilation systems should be operated with fresh air. Before the heating and cooling source equipment is started or shut down, the new fan and exhaust fan should be run once or twice a day for air exchange. Regular cleaning, disinfection or component replacement of the central air conditioning and ventilation system.

Second, what are the requirements for cleaning and disinfection of air conditioning

The routine cleaning and disinfection of air conditioning and ventilation systems in Kunshan Central Air conditioning maintenance shall comply with the requirements of the "Standard for Cleaning and Disinfection of Centralized Air conditioning and Ventilation Systems in Public Places" (WS/T 396-2012). Use 250mg/L ~ 500mg/L chlorine-containing (bromine) or chlorine dioxide disinfectant to spray, soak or wipe for 10min ~ 30min. Quaternary ammonium salt disinfectants are recommended for metal components to be disinfected.

When a confirmed or suspected case of COVID-19 is found, the air conditioning and ventilation system should be disinfected and cleaned under the guidance of the Center for Disease Control and Prevention, and can be reopened after passing the sanitary evaluation.