空调加氟知识大全（Air conditioning fluoride knowledge Daquan）

1、空调加氟知识大全（Air conditioning fluoride knowledge Daquan）The air conditioning refrigerant leak detection methodsLack of air conditioning air conditioning fluoride fluoride, leak detection is the primary work of leakage, today we Beijing air conditioning maintenance center to introduce five kinds of commo

2、nly used detection means for everyone, respectively, the soap fluorescent leak detection of water leakage detection, leak detection, leak detection, electronic halogen lamp.1. fluorescent leak detection, the principle of using fluorescent leak detection agent in the UV / blue light detecting radiati

3、on will emit bright green light, to detect the leakage of fluid in various systems, but the application of R134a early PAG lubricating oil and R134a compatibility is poor, due to leakage is hard to find traces of oil, fluorescent leak detection agent also lost useless.2. the soapy water leak, to the

4、 nitrogen system filling pressure of 0.98-1.96Mpa, and in each part of system with soap and water, bubble is leaking point, this method is on the roadside repair shop before the leak detection method is the most commonly used, but the human arm is limited by the range of vision is limited, most of t

5、he time no leak.3. halogen leak detection, leak detection lamp is lit, a halogen lamp on air pipe near the refrigeration system pipeline, when the pipeline leakage, the flame color will become blue, using this method of leak detection fire, fire and dangerous, and combined with the refrigerant will

6、produce harmful gases, also not easy to locate the leak.4. electronic leak detection, the probe of the leak detection device will move to the part that may leak. If the leak detector gives an alarm, it indicates leakage here. Electronic leak detector is easy to damage, maintenance more complex, and

7、easy to be affected by environmental chemicals such as gasoline and exhaust gas, and can not accurately locate the leak point.The 5. section pressure detection, namely making joint special fixture, and then all of the devices, pipeline were pressure detection, which is a kind of reliable detection m

8、ethods in multi device, multi pipeline case, according to the causes of seepage elements and the condition, according to the first key after the general principle in an orderly manner the detection efficiency of maintenance work, it is greatly improved.Four methods of checking leakage of fluorine in

9、 air conditioning maintenanceFirst, touch the hand and feel the condenser fan behind the air conditioner. If the touch temperature is not cool or hot, and the compressor is still working, it means that you have run out of fluorine.Seeing in refrigeration state, adjust the temperature controller to s

10、et the temperature 6 degrees lower than the room temperature to 8 degrees Celsius, 15 minutes after running, indoor machine hydraulic pipe (i.e. Flanagan thin brass), no frosting phenomenon, otherwise, the machine has fluorine leakage fault. Copper tube connector whether there are traces of oil, suc

11、h as oil, but also that there is leakage fluorine phenomenon.Ear listening, if found that the compressor has been working since the start, there is no downtime vibration, compressor self shock sound than the new purchase time, may be caused by leakage of fluoride abnormal sound.Temperature for a the

12、rmometer, near the outlet of the cold air, see Table 6 indicates whether the temperature to 8 DEG C lower than room temperature, such as lower than this temperature less than 5 degrees or even at room temperature and not much difference between, and compressor is still in work that fluoride has been

13、 running net.The center, based on years of experience, describes the specific steps of adding fluorine to the air conditioner:1 get ready. The pressure gauge is connected with two connecting tubes (one of which is connected with a thimble and the lower end of the low-pressure three-way valve of an a

14、ir conditioner),And Freon irrigation.2, before you flush freon, first connect the air in the pipe. Like the present summer, the pressure gauge for fluoride is generally between 0.45MPA and 0.55MPA.3 indicator pressure indicator. Use a small fine brush to stick soap bubbles to check the point of the

15、connection to see if there is any bubbles.Complete these steps, you basically understand the beauty of air-conditioning plus fluoride knowledge!The air conditioning refrigerant plus how to do?Air conditioning is an important factor in the cooling of snow, that is, fluorine, snow, how much, good or b

16、ad, affect the cooling effect of air-conditioning, snow inspection and increase and decrease also need to pay attention to. The following six problems are often encountered when the air conditioning and snow. A: do not understand the installation and maintenance of air-conditioning ordinary people,

17、how to identify the air conditioning has not been filled with snow species?1, after installation, air conditioning can be in the normal state of refrigeration, air-conditioning operation for a while, the outer machine two joints whether there is water? Yes, normal; one with no, no fluoride; no, no f

18、luorine.2, open the inner cover, remove the filter screen, there is water inside the copper tube, normal; white frost, lack of fluoride; nothing, no fluorine.Two: how to add fluoride?1. connect the refrigerant cylinder, the pressure gauge and the fluoride inlet with the fluorine filled hose, and rem

19、ove the air in the hose.2. start the compressor using the cylinder and refrigerant system pressure difference to supplement the refrigerant.3. during the process of fluoride filling, observe the change of the indicator of the pressure gauge to keep it from 0.45 to 0.5MPa.4. 30 minutes after the test

20、 run, observe whether the air conditioner is in normal operation.5. check the leak doubt after shutdown, no leakage can be put into operation.Three: air conditioning needs snow every year?Air conditioning does not need to add a kind of snow every year, in the case of moving, job transfer and air con

21、ditioning installation work, installation place restrictions, air-conditioning pipe will be lengthened, and emptying consumption snow, causing less snow. The refrigerant charge in the air conditioner is closely related to the cooling capacity of the air conditioner, and snow should be added accordin

22、g to the specific conditions.Four: air conditioner snow species added too much or too little, what may cause?An excessive amount of snow in the air conditioner may cause:When high humidity is running, it is easy to appear abnormal phenomenon of condensation. Even the air conditioner may appear in th

23、e reciprocating compressor on the housing condensation, rotary compressor in the gas, liquid separator, condensation, etc.The air conditioning compressor load is heavier, in overload situation, after a while, the air conditioner compression opportunity stops operation.Increase power consumption.Insu

24、fficient refrigerant charge in air conditioning may cause:The refrigerant exhaust temperature of air conditioner is too high, which leads to deterioration of refrigerant oil.Insufficient air conditioning capacity.The temperature of the motor winding of the air conditioning compressor is increased, a

25、nd the winding burnout accident is easy to happen.Five: the snow is not enough, continue to open the air conditioning, whether it will hurt the machine?Will affect the air-conditioning compressor. The cooling of the air conditioning compressor is cooled by snow, and if the snow is not enough, the co

26、mpressor cooling is poor, the compressor will heat up, and the life of the compressor will decrease.Six: air conditioning, snow plus enough, but the cooling effect is not very good,Is there something wrong with it?There are several reasons for the poor cooling effect of air conditioning:1, the syste

27、m coolant is insufficient2, the system is slightly blocked3, the fan network jam4, the external cooling effect is poor6 、 the temperature control circuit is out of order7, the fan speed is too slow8, the room is too large or poor insulation performance9, too much coolant10, the United States Air con

28、ditioning installation when the exhaust is not enough11, four valve leakage12 、 the power supply voltage is unstableIn addition, when using air conditioning, reasonable, correct, take care of the use of, will prolong the use of snow species, and increase the service life of air-conditioning.Under wh

29、at conditions does the air conditioner need fluoridation?Different air conditioners and refrigerators, refrigerators, all pipes are welded, the general refrigerator there is no valve, no process mouth. There is no need to install. So no fluoride is needed for ten years. Air conditioning and refriger

30、ation equipment is connected by the brass finish, there are two horn interface in the air conditioner indoor unit, outdoor unit also has two horn interface, which interface is damaged or inadequate installed when the connection is not tight, these reasons will lead to slow air leakage of fluorine. S

31、econdly, the valve of the air conditioning three-way valve is sealed by the O type sealing ring. Once the apron is damaged, this kind of condition can easily cause leakage of fluorine in the air conditioner.However, the leakage situation of every air conditioner Freon are not the same, so there is n

32、o specific time to the user to replace. In fact, the use of four or five years without addition of Freon air conditioning meet the eye everywhere. Special reminder: do you want to add freon, must be tested by professional personnel. If the annual air conditioning adds fluorine, air conditioning that

33、 leak before adding fluorine, freon, professional maintenance personnel will first find air leak. In the case of not looking for which, if you add Freon is white, because Freon will soon leak again.Adding fluorine step to air conditioner:1: set the remote control to the refrigeration mode, turn on t

34、he air conditioner.2: check whether the indoor machine running properly.3: outdoor compressor is normal start?.4: after the normal start, connect the fluorine equipment from the outdoor machine low pressure valve side column.5: pressure plus fluorine.What are the symptoms of the lack of air conditio

35、ning?Air conditioner compressor continuous operation 30 minutes later, if the refrigeration system lack fluorine, will appear the following phenomenon.1. 、 the trachea valve is dry. Touch your hands with no apparent coolness. The reason is that the lack of fluoride, resulting in the evaporator refri

36、gerant boiling point is reduced, so that the refrigerant temperature of the valve increases, the valve temperature rise.2. liquid pipe valve frosting. The reason is the lack of fluoride, resulting in pressure drop in the liquid pipe, the boiling point is reduced, so that the valve temperature is bel

37、ow freezing.3. open the inner panel and take off the filter net. Only a few parts of the evaporator are frosted. This is the result of a lack of refrigerant and a corresponding decrease in the area of refrigeration.4. outdoor machines exhaust no heat. The reason is that the refrigerant is not enough

38、, which leads to lower condensation pressure and temperature.The 5. drain hose drains little or no drainage. The reason is that the cooling area of the evaporator is reduced, the area of condensation is reduced, and the condensation water is reduced.6. outdoor hydraulic valve with oil pollution.The

39、reason is the refrigerant and refrigeration oil have mutual solubility of the refrigerant from leaking oil spills attached around the leak.7. from the outdoor machine for measuring the fluorine filling pressure is lower than 0.45MPa. The reason is the lack of refrigerant, resulting in evaporation pr

40、essure drop.In addition, if the liquid valve frost, that serious lack of fluoride; only the tracheal valve frost, that slightly lack of fluoride or the ambient temperature is too low; the two valves are frost, showed the two throttle system.Two, preventive measuresPoor sealing connection 1. indoor a

41、nd outdoor machine copper copper bell often caused by lack of fluoride. Therefore, installation and maintenance should pay attention to the following points:(1) ensure the cleanliness of parts of the bell;(2) apply oil to avoid scratches;(3) before the old pipe flaring should annealing;(4) flaring b

42、efore scraping mouth burr;(5) the bell taper should be reasonable.2. if the spool leakage fluorine filling mouth, first under pressure through the thimble, outward row out of fluoride impurities. After this treatment has not yet out of impurities or aging deformation of the sealing ring, the machine

43、 should start collecting fluorine after cleaning or replacement of the valve. The new sealing ring of the valve core to apply oil to improve the sealing performance. If it is gas pipe valve and fluorine filling outlet sealing cap is not tightened or impurities, will cause leakage. The sealing cap is

44、 too dirty with carbon tetrachloride or kerosene cleaning; tighten before daub lubricating oil, ensure the sealing performance, in addition to the attention of screwing to moderate intensity. Three, fluorine filling operation1. fluorine filling hose refrigerant cylinders, pressure gauge and fluorine

45、 filling mouth, eliminate air hose.2. start the compressor, differential complementary refrigerant and refrigeration system using cylinder pressure.3. fluorine filling process observe the pressure gauge pointer changes, to keep it in 0.45 0.5MPa.4. test run 30 minutes, observe whether to enter the n

46、ormal operation state of air conditioner.5. stop check after the leakage points, no leakage can be put into operation.Air conditioning adds fluorine, freon quality can not be ignoredOrdinary household air conditioner Freon there are good points.Now most of the maintenance work for the bulk of fluori

47、ne fluorine. The Freon purity, impurities, moisture. The price is low. After adding this fluorine, will cause the refrigerating effect of the air conditioner is not good, power consumption increases. Because the air conditioner run impurities Freon air conditioner Freon system is easy to be blocked.

48、 Easy to damage the compressor motor long running water more air conditioner.A few days ago the media reported the maintenance of fluoride bottles exploded in the elevator. It must be used in bulk fluoride, adding excess in canned time.In addition to bulk fluoride bottle aging, no safety valve, but

49、the temperature is too high in fluoride bottle with collision is prone to explosion. Canned bottled Freon has strict weight control, containing less impurities, less water. And equipped with a safety valve, fluorine bottle has characteristics of unidirectional conduction, a bottle of fluoride after

50、use can not canned. Can not be used repeatedly more safe and more reliable.Beijing air conditioning maintenance center air conditioning fluoride arcaneWe Beijing air conditioning maintenance center today to explain to the air conditioning fluoridation problems,Many maintenance departments will use t

51、he following two methods: when adding fluoride in the air suction pipe of the compressor to a repair welding process pipe for fluoride; or from the compressor high-pressure process control to add fluorine. But in practice, these two kinds of fluoridation methods have some shortcomings, in front of a

52、 fluoride too slow and unsafe, the compressor is easy to produce liquid hammer; after a fluoride bottle pressure is large enough, it is difficult to add fluoride. After years of maintenance practice, the center has taken the process tube of window type air conditioner filter to add fluorine, which i

53、s fast, smooth, safe and accurate.A refrigeration pipeline for oil pipeline, which has a window type air conditioner leak, the specific steps are as follows:1. a short cut to filter process pipe, a one-way valve (refrigeration equipment stores, about 2 yuan) into the remaining process about l0mm tub

54、e welding; or to a length of about 200mm, the diameter of 4mm copper tube, one end is inserted into the remaining in the process pipe welding, connection the other end is welded with three brass valve repair.2., the leakage line of the cooling pipe is repaired and welded, and the compressor and the

55、vacuum pump are simultaneously opened, so that the air in the pipeline is evacuated at the same time, so as to speed up the vacuum pumping.3. connect the fluorine bottle with the three way maintenance valve, and discharge the air in the connecting pipe. In the air conditioning shutdown, fluoride bot

56、tle inverted liquid fluoride, and measuring tool platform balance accurate weighing, when adding fluoride to reduce the amount of fluorine in the bottle is equal to the rated air conditioning fluoride, fluoride bottle valve closed immediately, so as to avoid excessive fluoride.Liquid fluorine is add

57、ed to the process tube from the filter. As long as the vacuum degree of the piping system is qualified, the speed of adding fluorine is very fast. Under normal circumstances, three minutes of fluoride content will be able to achieve air-conditioning rated filling amount.Two, for the years have been

58、used, the cooling effect of the window air conditioning deviation, but the pipeline did not leak points, the specific steps are as follows:1. measure and record the saturation pressure of fluorine in the fluoride bottle at the current ambient temperature with the pressure gauge for future reference.2. connect the puncture valve, the three way maintenance valve and the fluorine bottle, and discharge the air in the connecting pipe.3. air conditioning in shutdown, the first stab into the fi