How to change air conditioning fluid: Hot topics and operation guides on the Internet in the past 10 days
As the high temperatures continue in summer, air conditioning maintenance has become one of the hot topics on the Internet recently. The following are statistics of popular content related to air conditioners in the past 10 days (as of October 2023):
| Ranking | hot topics | Search volume (10,000 times) | Main platform |
|---|---|---|---|
| 1 | Air conditioner cooling effect is poor | 28.5 | Baidu/Douyin |
| 2 | Air conditioning fluid replacement tutorial | 19.2 | Station B/Xiaohongshu |
| 3 | Air conditioning cleaning and disinfection | 15.7 | Weibo/Kuaishou |
| 4 | Air conditioner power saving tips | 12.3 | Zhihu/Toutiao |
1. The necessity of replacing air conditioning fluid
According to the Home Appliance Repair Association, about 67% of air conditioning refrigeration problems are related to insufficient refrigerant (commonly known as "air conditioning fluid"). Refrigerant is the key medium for heat exchange in air conditioners. It needs to be replenished every 3-5 years under normal use. In case of leakage, it needs to be dealt with immediately.
2. Preparing tools before operation
| Tool name | Instructions for use | Security level |
|---|---|---|
| refrigerant tank | R22/R32 and other corresponding models | ★★★ |
| pressure gauge set | Check system pressure | ★★★ |
| Vacuum pump | Vacuuming | ★★★★ |
| protective gloves | Prevent frostbite | ★ |
3. Detailed replacement steps (split air conditioner)
1.Safety preparation: Turn off the power and confirm the air conditioner model and refrigerant type (usually marked on the outdoor unit nameplate)
2.Recycle old refrigerant: Connect the pressure gauge to the low-pressure valve, run the air conditioner for 10 minutes and then close the high-pressure valve until the pressure gauge returns to zero.
3.Vacuuming: Use a vacuum pump to pump air for more than 15 minutes to ensure that the system vacuum is ≤-0.1MPa
4.quantitative filling: Connect the refrigerant tank upside down to the low-pressure port, and fill it according to the grams indicated on the nameplate (the error shall not exceed ±5%)
5.Detection and verification: Run the air conditioner for 30 minutes, and detect the air outlet temperature difference should be ≥ 8°C. For low pressure, refer to the table below:
| ambient temperature | R22 pressure value | R32 pressure value |
|---|---|---|
| 25℃ | 0.45-0.55MPa | 0.7-0.8MPa |
| 30℃ | 0.5-0.6MPa | 0.8-0.9MPa |
| 35℃ | 0.55-0.65MPa | 0.9-1.0MPa |
4. Notes and popular questions and answers
1.Security warning: R32 refrigerant is flammable. Open flames are prohibited at the operation site. It is recommended that non-professionals contact after-sales service.
2.Common misunderstandings: The method of "listening to the sound to determine the dose" in Douyin's popular video is not accurate and a quantitative doser must be used.
3.cost reference: According to Meituan service data, the average price of professional fluoridation services is 120-200 yuan/time (including testing fees)
5. Further reading
The recent hot topic on Xiaohongshu #Air Conditioner Self-Rescue Guide recommends: Cleaning the filter twice a year can reduce refrigerant loss by 30%, and using the air conditioner windshield together can improve cooling efficiency. "Refrigeration expert Zhang Gong", a home appliance celebrity on Weibo, emphasized that if there is a refrigeration problem with a newly installed air conditioner within 3 years, priority should be given to troubleshooting installation loopholes rather than refrigerant.
Through the above structured guidance, users can systematically understand the entire process of air conditioning fluid replacement. However, special attention should be paid: There are certain risks involved in operating pressure vessels. When you are unsure of your own operating capabilities, be sure to contact professional technicians.
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