Air conditioning not refrigeration? Teach you how to filling refrigerant.

how to distinguish whether the air conditioning refrigerant demand change

1, try

auto air conditioner for a period of time in the future, feeling the wind to the body is very cool and can get to set the temperature quickly, and the job of stopping working state of the tightening machine, and then indicate the normal, when the car air conditioning does not demand change of refrigerant.

2, test

use thermometer to measure temperature at the inlet and outlet of the air conditioning, assumes that the temperature difference in 8 degrees or above, more than normal. Of course, the bigger the temperature difference, air conditioning work, the better, and the temperature difference less than 8 degrees, it will add refrigerant.

3, see

more than ten minutes in the future the air conditioning is turned on, opened the car air conditioning panel, you should see the evaporation on copper tube for heat and cold replacement part is full of condensed water, half half part don't have, then maybe short refrigerants.

4, was made in the

using the car air conditioning, more than half a year to view car machine pipeline joints and the valve outdoor place, if there is any oil leakage phenomenon, assuming significant traces of oil spill, oil fluorine miscibility.

under normal circumstances, plus a refrigerant can use three to five years, the adding of air conditioning refrigerant had better choose original, so can very good protection of tightening machine.

auto air conditioning refrigerant type

freon 12: his physical properties is a colorless, odorless, transparent, non-toxic almost refrigerants, assumes that the atmosphere contains eighty percent is can let a person suffocate. He would not burn also will not explode, but can decompose the harmful material such as hydrogen fluoride, hydrogen chloride and phosgene. He still has a lot of organic matter, internal sealing work can't use.

freon 22: his toxicity is stronger than a, but he can with some medium fusion with each other. But he will follow the temperature changes and changes, thus in the process of using it is necessary to have oil return method.

R410A: he is now the new environmental protection refrigerants, and often used in air conditioning system. Is also countries identified as best refrigerant and replaced before any kind of refrigerant medium. And also improve the effect of the air conditioning in the use of functional aspects, also gives ozone protection.

air conditioning refrigerant charging knowledge

when filling must be slowly to let air conditioning work 10 minutes after add command to test the pressure and current unavoidably again when time can't to the time of the as standard pressure and current that may have been added. Can break open a four-way valve coil when winter, can also make indoor thermal head arrived to open the refrigeration refrigeration temperature. Sometimes also can let air conditioning work under dehumidifying ways it request to temperature is not high. Usually charging methods are divided into low pressure filling and static injectors. Concrete filling process because the demand for professional equipment for support, so will not be able to add on its own.

a fault operation is not vacuum filling directly. Some repair shops will be left in the car air conditioning refrigerant discharge directly, and then directly with charging refrigerant table group, use of refrigerants in air conditioning system, the pressure of refrigerant tank to air pressure in the system together, to do so is a fault. Because it does not guarantee completely discharge the air in the air conditioning system, and the remaining in the air conditioning system air can cause the following consequences: 1. Lack of refrigerant charging quantity, because the existence of natural air to take up part of the space, don't smoke air filling directly, perhaps in refrigerant charging not completed when the system pressure is too high, the rest of the refrigerant can no longer participate in air conditioning. 2. The rest of the air in the system can reduce air conditioning power, refrigeration effect. As part of a tight squeeze machine is no refrigeration effect of air, so the engine load increased. So please before charging refrigerant must carry out the operation of the vacuum.

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