Under standard installation, which was performed by the professional, filling airand no need. A split system is filled with freon, which is located in the outdoor unit in a liquid state. But if the installation is done poorly or unprofessionally, filling airand can not be avoided. Freon evaporate as a result of poorly expander connection pipe in the refrigerant circuit. A gas leak could happen one month after installation. Air will slowly cool the room, and the outer block will appear frost. These signs will indicate that air conditioning needs refilling freon.Filling split systems are necessary and after the repair of equipment or the refrigerant tube. Of course, during operation of the air conditioningand there is a natural gas leak, but this leak is quite small. It reaches 6-8 percent per year. Therefore, if there were no breakdowns of the air conditioningand it must be refilled at least every two years. If this is not done, the a / C system freon level is below the permissible value, and this will reduce the lifetime of the appliance. The compressor will overheat and burn up, and you will need to repair the split system, which will cost much more than its refill. And then the question arises: how to determine if you need a refill air conditioningbut? This can be done without special instruments and devices. Lack of freon is the reduction of the intensity of the cooling or heating of the air and the appearance of ice and frost on the outside unit. Once the owner of the air conditioningand noticed one of the signs, he must contact the service center to the system refueled. The cost of refueling depends on the amount of gas which has evaporated from its brand. For that use freon R-22, R-407C, R-410A. The safest is considered to be the last of these. It does not destroy the ozone layer of the atmosphere and safe for human health.
Advice 2: How to charge air conditioning freon
Unfortunately, even the most expensive modern air conditioning system is leaking freon from 5 to 8% annually. Is associated not with technical defects and design features of the air conditioner, where the inter-unit pipes are connected among themselves by a method of flaring. Then one day the stocks of freon in the air conditioner will have to replenish. If this time is not done, it will overheat and may fail.
The frequency of refueling of conditioners depending on their quality may be once a year or every two years. In rare cases this period may be more. The need of the filling of the air conditioner indicate some signs. Thus, the air may be excessively or insufficiently cooled. The next symptom is the appearance of frost or ice in the joints of the outdoor unit.
The first thing to do in these cases is to turn the AC off and then ask for help in service center. Independent attempts to rectify the fault without knowledge of the techniques and special equipment is almost certainly doomed to failure.
For refueling of air conditioners used freon R-22, R-134a and R-404a. He arrives in cylinders weighing 13.6, 22.7, 400 and 800 kg. As you know, freon is an inert gas that is completely harmless and non-explosive. The filling process start with setting the minimum temperature of operation equal to 18 degrees, then start the device in the "cold."
After that, the cap on the faucet of a large pipe of the outdoor unit, remove and connect the gauge hoses. The speed of the cooling fan put in the middle position and the air outlet, install thermometers.
When the air temperature in the street +25 ° C, the readings on the manometer should correspond to 4.2-5.0 bar. To achieve utmost efficiency, you need to include the pressure gauge and look on the thermometer. The filling process is terminated as soon as after lowering the temperature of it will rise. Will check the current level. If the readings are higher than normal, then you need the freon to bleed.
Poweraide yourself in the customer table (usually included in kit if service documents are lost – look on the manufacturer's website), compare all the indications of the air conditioner with the factory standards.
Usually filling the air conditioner freon, you may need only a few years after the first filling of the air conditioner and its installation. Refilling of air conditioning needed due to the natural care of the freon through the connections and the micropores of the tubes. Refilling of air conditioning requires a certain technology and takes 20-40 minutes.
Among the most common failures of systems of all types (industrial, domestic), a significant place is a refrigerant leakage from the refrigerant circuit. Timely refill freon. With proper installation of air conditioners for the year from the refrigerant circuit is leaking to eight percent of freon, so the air conditioning filling should be carried out in time.
Advice 3: How to charge auto air conditioning
Air-conditioned vehiclesmanufactured before the mid 90-ies, fueled with freon R-12. He was then recognized as dangerous for the ozone layer and gradually car air conditioners began to switch to less efficient but safer R-134a.
You will need
- - special set for self-fueling air conditioners
Purchase an auto in the device for filling the air conditioner. It should consist of a tank with coolant, under pressure, flexible rubber tube and pressure meter. The counter counts the number of filled freon in the system. Attach the tube to the counter and turn the wheel counterclockwise until it stops, before you put the counter in a container of freon. The needle is mounted inside the tube, puncture the container with freon and the unit is ready for filling. So do not place the meter into the tank prematurely.
Configure and calibrate the meter before use. To do this, turn the wheel so that its position corresponds to the temperature shown on the pressure gauge.
Car air conditioning consists of two parts: one a low pressure, the other high. The gas station make from the low pressure side. To accurately distinguish one side from the other, read the instructions to the car. Note notes: cover high pressure is indicated by the letter N cover low pressure with a letter L. the Holes on different sides of the air conditioner are often different, making it impossible for improper dressing.
Before removing the cap low pressure air conditioning clear space around it to prevent dirt from entering the system. Attach the tube of the filling device to the hole of the low pressure, without causing the device (see claim 1). start the car, turn on the air conditioning at full capacity.
Follow the counter. The pressure meter should gradually rise and stabilize. If the pressure has not risen to the desired value, or not rise at all, so the air conditioning required a refill. Disconnect the appliance from the opening of the low pressure, stop the engine and air conditioning of the car.
Connect the tube of the filling device to the compressor of the air conditioner. Restart the engine and turn the air conditioner on full blast. Continue to monitor the meter readings. As soon as his testimony stabiliziruemost, turn the wheel counterclockwise and the characteristic sound make sure that the container of gas was punctured. The freon will start to flow into the compressor, tucking it.
When the counter pressure is equal to the value of the temperature of the external environment, which previously had been installed (p. 2), the filling process of the air conditioner to fail. Remove the filling device and close the cover of the air conditioner.