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We are living along the equator and it tends to get really hot in most parts of the year.

That is why keeping your air conditioning system working properly is more than essential. Many people tend to think that their air conditioning machine just needs to be switched on and off, but the truth is that a little bit of extra care will bring you amazing results – in other words, you won’t run the risk of having an air conditioning failure on the hottest day of the year!

One of the things you need to do regularly is to purge your air conditioning system to make sure that the filtered air that comes out is clean and healthy and for that nothing is better than nitrogen.

How Do Air Conditioning Systems Get Contaminated?

Most air conditioning systems have copper tubes inside. The oxygen going through these tends to form copper oxide in their surface.  You can easily check the effect of this by taking a look at the tubes of your air conditioning system: you will probably see a dark brown discoloration. The real problem is, though, that inside the tube oxide flakes are carried by the refrigerant through the system. And this means that the air that comes out from the system will be slightly contaminated.

Why Nitrogen?

That the air conditioning system will get contaminated is a consequence of its use – which means it cannot be avoided. However, you can make sure the system gets clean by using nitrogen to purge it.

In the past, other gases were used to carry out this procedure, such as Freon. However, nitrogen is the most preferred now as it does not damage the environment and it doesn’t contain chlorine. Besides, nitrogen doesn’t support damaging processes for the air conditioning system – such as combustion or oxidation.

Moreover, nitrogen gas cylinders can be stored very easily. This is an inert gas, which means that it doesn’t react with other stored materials and it doesn’t carry moisture.

How to Use It

The most important thing before injecting nitrogen to your air conditioning system is to be adequately protected to do the job. Make sure you are wearing safety shoes, gloves and goggles. Once you are ready, prepare the nitrogen cylinder and its pressure regulator. Use the nitrogen to push some of the contaminants out of the air conditioning unit. To do this, you just need to attach the nitrogen regulator to one of the lines, allowing it to blow out the other.

Try not to pump too much nitrogen into your air conditioning system, though. An excess of it will tend to cool the tube, reducing brazing heat efficiency. In addition, an excess of nitrogen can build up inside the tube and reduce braze alloy penetration. A little hole in a cap at the end of the line will allow the nitrogen to escape.

If you want to make sure that your air conditioning system is always in a pristine condition, make sure you apply dry nitrogen to purge it from time to time. Here at LECOL we can offer you a complete Nitrogen flush of your system. If you have any question about this or any other of our products, don’t hesitate in contacting us, we’ll be delighted to help!

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