Is nitrogen a must while brazing AC lines? - moisture indicator on motorola razr v3
I have a 410A unit and I read that you are using an inert gas, is to scan the weld, and because the ability of R410A by the system of oxidation to move, compared with the R22. Most people prefer nitrogen from what I read, but each time it is too difficult or too expensive for me to get it.
I have a compressor and the air is very dry. I have a filter in the factory, where the coolant line, and I am installing an indicator as well as moisture.
I've heard some did not even clean up the lines do not, if you have a filter, a bad idea? I can imagine to oxidation than large and not clog the filter and the filter door.
Thanks for the help!
Thursday, February 18, 2010
Moisture Indicator On Motorola Razr V3 Is Nitrogen A Must While Brazing AC Lines?
4 comments:
410. Nests did not represent a system with nitrogen before and during the Custom Welding necessarily a problem, but increases the probability of a problem .. Filter / drier in the liquid line capture "flakes" that are formed inside the tube and in the system are distributed, but even if you are looking for the dryer in the vicinity of the coil inside welding Union or out of the dryer, it is customary to screen capture by dry snowflakes, because they are the body downstream of the dryer ... May clog the filters in the flakes, or to affect TXV TXV ... I do not know why the 410th Systems tend to be starved to serve the welding, but I said that either the refrigerant itself, or the "Poe" in the compressor oil has a greater attractionNo moisture than R-22 and the petroleum systems of the type .. therefore faced with everything that the book is important in a system 410A, such as the installation of a large liquid drying thats [for PURON rated], with nitrogen during the brazing and the exhaust system thoroughly cleaned before waiting ...... . Flakes seamless nitrogen is due to the presence of oxygen, not the humidity will cause .. Nitrogen is essentially free of oxygen in the air and moisture ... It does not require much nitrogen to purge the system, just take a little pressure on the port to open for the other buildings can be no pressure that could lead solder leaving systen leakage to flow to 'nitrogen through the solder joint, during soldering ..... also be sure to measure the pressure and temperature readings, while chargingNG, and load the recommendations of the reference .... As a rule, 10-12 ° C "Hypothermia" is necessary ... DONT enter PURON add the line ........ cold
Not dare to clean the lines with the use of an air compressor, you have all kinds of moisture in the system. If you do not need to purge nitrogen, only the solder joints to make sure that the dry-mill, and absolutely a good vacuum and share in the min for at least 30. If the evap. Linesets coil and condenser are all new, it should work. Also, you should load liquid and only if there is more unity of refrigerant needed.
DAN THE MAN AC gave the correct answer. Also remember that if it is a line that was used with a system of R-22, it is essential that remove the lines of washing, all the old oil. After unloading is assumed that the nitrogen-clean lines. If they do not cause problems on the road. Every coach knows a good use of the nitrogen should be used in soldering. That's part of operating expenses. Are you a service technician?
I never saw a series of AC soldiers. Most welding is used in silver and inert gas.
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