Today all were introduced to the principles and applications surrounding brazing. Though Mel Brooks could not attend, immediate progress happened… as for badges, we don’t need any stinking badges (just throwing in one of the greatest movie lines in history).
HVACTA: Brazing Saddles
HVACTA: Brazing Saddles
Brazing is a procedure by which tubing is joined by melting a filler metal into the joint at high temperatures, over 840°F.
Recognizing many will be working with Low Flammable Refrigerant, brazing techniques are as follows: When brazing a system that has been charged with a flammable refrigerant, the system charge must be recovered first. The system should then be swept with nitrogen to ensure that there is no residual refrigerant. A low-pressure nitrogen purge (1/2 to 2 psig) should be done during the brazing process.
All participants got involved learning the skills of torch safety and use. Not a bad way to gain knowledge of the HVAC skill set… by DOING!
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Danny
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