What kind of car refrigerant points? When to add and common problems

car air conditioning refrigerant has two kinds, a class called CFC12 ( Dichlorodifluoromethane) , the so-called R12; Another kind is called HFC134a ( Say - Four fluorine ethane) , the so-called everything. Because R12 is not friendly to the environment, so the world would have suspended in onboard air conditioning use. 26 in 1987, the United Nations member states signed the Montreal protocol on damage to the ozone layer material control ', hereinafter referred to as the Montreal protocol. In this protocol, developed countries and developing countries I make a promise and separation in the future to suspend the use as air conditioning refrigerant R12, and looking for new alternatives. The alternative, is widely used today everything. According to promise, our country since 2002, rolled off the production line of a new car, no longer use R12 air conditioning system, and use more environmental protection but costs more system of everything. Everything was developed by dupont, and it is the biggest advantage of the ODP value is zero, The ODP refers to the potential damage to the ozone layer) 。 In addition, everything does not contain chlorine atoms, has excellent safety features, physical function compared with R12 come near, so the refrigeration system modification is simpler; Its heat transfer function is better than R12, can cut the amount of refrigerant. Now, everything in the world as a refrigerant, more than 50% by using the car air conditioning. With car ownership explosive increase ( Especially in China) Demand about everything, the market will be quite large. How long is the car air conditioning refrigerant plus one? The answer is: to view every two years, but this is not a fixed rule, because refrigerant general situations is not failure, it is only possible leakage. Because of the complexity of traffic condition, the air conditioning system under various sensational line untight seal conditions may be present, caused by leakage of refrigerant. So, exactly how to add a refrigerant, actually has no fixed. Can only say that under the normal wear and tear, to view, add, every two years. How to distinguish refrigerant leakage? Can say, only the existence of local refrigerants, there will be leakage may occur. In car air conditioning system, refrigerant of the whole cycle down, compressor, condenser, transpiration box, high pressure tube, low pressure pipe and other parts, are likely to present untight seal and cause refrigerant to escape. So, what should we distinguish the refrigerant to escape? One of the most common way is to check the oil spill. In the air conditioning system, in addition to the refrigerant, and a freezing oil. Frozen oil lubrication compressor were the effect of the moving parts, each bearing, and the effect of oil seal. In the loop, part of the air conditioning refrigeration oil with refrigerant into the pipeline. If found certain parts with oil marks, so is the existence of refrigerant leakage.

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