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Your consultants are asking you to pass nitrogen through copper pipes while brazing to prevent oxidation inside the pipes. These pipes are for refrigerant. Is this a regular practice?
Wiki User
∙ 13y ago
Pumping nitrogen through refrigerant piping during brazing is an excellent practice. The reason is that nitrogen helps to prevent the buildup of oxide scale on the inside of the pipes during the brazing process. Refrigerant is a natural cleaning agent, and as it is being pumped through the pipes it will pick up the scale and contaminate the refrigerant. It is possible that this will damage to the compressor.
Wiki User
∙ 13y ago
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Buy a kit at Wal-Mart or auto parts comes with instructions While the equipment to install refrigerant is widely available, I try to discourage the practice for a few reasons: System charges are very specific...too much and your compressor will run too hot. Too little, and the lubrication to the compressor will be affected. Either means a short life span for the compressor, and a future expensive repair. Refrigerant is a controlled gas, and it is illegal to vent it to the atmosphere. Refrigerant acheives very low temperature at atmospheric pressure and can hurt you. If there is a mechanical problem, adding refrigerant won't help. If there is a leak, adding refrigerant won't last long. Please, have a professional help you.
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