How to do third party testing of air conditioners, and how much does third party testing of air cond

Directly entrust a third-party testing agency.

Conduct testing or contact the local quality and technical supervision department for testing.

Generally, the third-party testing institutions for air conditioning products include Hefei General Testing Institute, Guangzhou Weikai, Beijing Household Appliance Research Institute and other institutions; Third-party testing institutions need to have CNAS and CMA qualification certification, because the test results of third-party testing institutions can be released to the public and have a considerable degree of impartiality.

If you have any questions or doubts about air conditioning products and want to ask a third party to test, it is recommended to be exempt, as the old saying goes, "the arm can't twist the thigh"; The most appropriate way to deal with it is to directly and repeatedly directly complain to the after-sales service of the manufacturer's headquarters.

The third-party inspection of air conditioners requires about 100-300.

The third-party inspection of the air conditioner depends on the number of horses of the air conditioner and the difficulty of leak detection. Split wall-mounted and cabinet-type air conditioners used at home, simply check the leakage of the pipeline, the cost is about 100 yuan, and after checking out the leakage point of the refrigerant, it is necessary to fill the leak, vacuum and fill the standard amount of the same new refrigerant, which is about 250 yuan. The labor cost varies greatly in different regions, and the cost of checking and filling the omissions will also vary greatly.

Air Conditioning Test Method:

1. Low pressure, high pressure and low pressure, replace the compressor.

When the air conditioning pressure gauge detects that the low pressure of the air conditioning system is higher than normal, and the high pressure is lower than normal, the air conditioning refrigeration must not achieve the effect of normal air conditioning. The general cause of failure is the wear and tear inside the air conditioning pump, resulting in a decrease in power. At this time, it is often necessary to replace the compressor to solve the problem.

2. The pressure is double high to exhaust, or there is a problem with heat dissipation.

When it is detected that the high and low pressure of the system is higher than normal, the common fault is generally that the system has air or excessive refrigerant, and at this time, it is necessary to re-vacuum, and then add an appropriate amount of refrigerant to rent the chain to solve the problem. However, there is also a situation that is poor heat dissipation, especially when the ambient temperature is relatively high, which often leads to worse heat dissipation, and the cause of this failure is generally that the heat sink is blocked, dirty, and the speed of the cooling fan is not enough.

3. There is water vapor in the table shake system, and the evacuation must be more thorough.

When the air conditioning system is working, if the pressure gauge needle keeps shaking, it means that there is moisture in the system. To solve this problem, it is generally necessary to re-vacuum, the pumping time must be no less than 15 minutes, and if necessary, the drying bottle needs to be replaced to completely drain the water in the system.

4. The pressure is low and the refrigerant is low, otherwise the system will be blocked.

When the high and low pressure are low, there are two possibilities, one is the system blockage, when the system is blocked, the blockage will produce throttling, and the throttling part will have obvious temperature difference, and you can find out the problem by feeling it with your hands. Another possibility is the leakage of refrigerant, resulting in insufficient refrigerant, which is more common, and it is necessary to use an air conditioning detector to find out the location of the leakage, or replace or repair. <>

1. The air inlet of the air conditioner should be cleaned frequently to avoid being covered by debris.

2. Regularly check whether the liquid level height of the refrigerant in the air-conditioning system is normal.

3. When starting the air conditioning system for the first time, you should first open the hood to see whether the appearance of the air conditioning system is neat, whether the compressor is firm, and the tension of the compressor belt, etc., then start the engine, idle and turn on the air conditioning A C switch and the wind speed switch, carefully observe whether the compressor is working normally, and whether the air conditioning system has abnormal noise, if there is any abnormal sound or the compressor is not working well, immediately turn off the air conditioning system.

4. Regularly check whether the compressor belt is in good condition. If the surface of the belt is in contact with the pulley groove, the side is shiny, and there is a "squeak" noise when the air conditioner is started.

5. Regularly check the hoses and fittings of the air conditioning system for oil stains. If a leak is found, it should be repaired in time.

6. Clean the condenser frequently. Regular cleaning of the condenser surface can greatly improve the cooling effect of the air conditioning system.

7. Check whether the compressor belt is in good condition. If the surface of the belt is in contact with the pulley groove, the side is bright, and there is a "squeak" noise when the air conditioner is started, it means that the belt and pulley should be replaced if the belt is seriously slipped; If the belt is too loose, it should be adjusted, otherwise it is easy to make the air conditioning system poorly refrigerated.

8. When the air conditioning compressor is turned on, sometimes you can detect the slight changes in engine performance and power, which is normal, when the air conditioning system is working, it can remove the moisture in the air, so when the air conditioner is used in place or after the shutdown, you may notice that there are drips at the bottom of the engine room, which is also normal.

9. Therefore, it is necessary to clean and replace the air conditioner filter regularly.

10. Try to avoid turning on the air conditioner frequently to avoid damaging the compressor. The air conditioning system will automatically adjust according to the temperature set in the car, and 12CWTO8 should not be controlled manually by turning the switch on or off.

11. It is forbidden to turn on the air conditioner in situ for a long time or rest and sleep in the car. Because the excess carbon monoxide produced during long-term idle operation will enter the car through the air conditioning intake, which will affect the air quality in the car, and even threaten the lives of drivers and passengers when the interior is too tightly closed.

Test items:1Combined air conditioning units.

Inspection items: appearance, safety requirements, start-up and operation, air volume and full pressure, input power, air leakage rate, cooling capacity, heat supply, condensate test, condensate removal ability, noise, vibration, section wind speed uniformity, etc.

2.Purify air conditioning units.

Inspection items: safety requirements, start-up and operation, air volume and full pressure, input power, air leakage rate, cooling capacity, heat supply, condensate test, condensate removal ability, noise, vibration, section wind speed uniformity, etc.

3.Fresh air unit.

Inspection items: appearance and cleanliness, safety requirements, start-up and operation, air volume and residual pressure of the unit, input power, air leakage rate, cooling capacity, heat supply, condensate test, condensate exclusion ability, noise, vibration, section wind speed uniformity, etc.

4.Cabinet fan coil unit.

Inspection items: start-up and operation, air volume and static pressure, input power, cooling capacity, heat supply, water resistance, condensate test, condensate exclusion capacity, noise, safety requirements, etc.

5.Fan heater.

Inspection items: air volume, input power and current, wind speed, heating air curtain heat supply, water resistance, noise, safety requirements, appearance, start-up, operation, etc.

6.Air curtain.

Inspection items: air volume, input power and current, heat supply, water resistance, noise, safety requirements, appearance, start-up, operation, vibration, etc.

Dear, the quality of the new and old third-party testing institutions of air conditioners depends on their technical level and reliability. The most commonly used third-party testing institutions usually include the China Environmental Monitoring Station, the China Air Quality Level Monitoring Station, the China Building Energy Conservation Monitoring Center, and so on. For example, China Environmental Monitoring Station has a strict quality management system and professional technical services, which can detect the new and old conditions of air conditioners, and can provide customers with comprehensive and accurate data and reasonable energy-saving plans; The China Air Quality Level Monitoring Station has a high-quality professional testing team, which can test the harmful substances contained in air conditioners with strict standards and give effective pollution control plans. The China Building Energy Conservation Monitoring Center has a number of advanced building energy efficiency technologies, which can detect the energy-saving performance of air conditioners in order to find and improve energy conservation.

In order to ensure the accuracy of the inspection, many institutions will also use remote testing instruments for testing, which can penetrate into the potential energy-saving hazards of the building structure. Finally, it should be remembered that when choosing a new and old third-party testing agency for air conditioners, in addition to looking at their technical level, it is also necessary to consider many factors such as service capacity, testing cost and time. In addition, attention should also be paid to preventive and beam repairer or repetition testing to ensure the normal use of equipment and reasonable energy saving.

There are many reasons for non-refrigeration, and the possible cause is the phenomenon of the compressor protection device tripping.

Compressor overload protection will trip, indicating that the system is too high-pressure, the pressure is too high, or the overheating current is too high.

Causes and elimination of high pressure and overheating:

1. Too much refrigerant. Appropriately reduce the amount of macro disturbance and cold dose.

2. Poor heat dissipation. Check the condenser pipe for dirt and dirt and clean the condenser.

3. The pipeline system is blocked. Refer to the pressure gauge to judge, eliminate, and re-process systematically.

4. Dust and fouling of the evaporator or filter screen. The airflow becomes smaller, the system pressure and temperature are unstable, and the evaporator or filter is cleaned.

5. Fluoride deficiency is also possible. When there is a lack of fluorine, the compressor discharge temperature will overheat, causing the overheating load protection switch to trip.

The electrical problem is:

1. Control circuit board failure.

2. The temperature sensor is overloaded and the information is wrong.

3. The power supply wiring is loose and the contact is poor.

4. The starting capacitor or compressor starting coil is burned out.

The information is insufficient, so it can only be analyzed like this, and there are many other possibilities, so it is recommended to find a professional maintenance and maintenance personnel to check it.

Hope it can help you, satisfied. Thank you.