Workshop Status:
In Progress
EPA Certification:
Not Texted
Employment Status: Not Provided
Isaiah Marchand at HVAC Technical Academy – Central Florida
Isaiah Marchand video – Vacuum Process
Isaiah Marchand video transcript – Vacuum Process (Training Video Transcript)
00:00:00
Hey guys, this is Isaiah Marshian with HVAC Technical Academy. Today we’re going to be talking about the vacuum process. What it is and what happens if we don’t do it. When making a major repair or when installing a new system, it is a crucial step to pull a vacuum on the system. Well, what is the vacuum process? Here we have the vacuum pump. The vacuum pump pulls the vacuum on the system which removes all non-condensible such as air and moisture from the system. We hook our manifold
00:00:27
gauge up to the high and the low side and then we hook our vacuum pump to our manifold gauge. That is what causes the suction. EPA requires us to pull a vacuum of 500 microns. We can read our microns through this manifold gauge. We can also use a micron gauge to read the microns that we are pulling. Microns are simply the measure of atmospheric pressure in a system. So once we pull it down to 500 microns, we usually wait about 5 to 10 minutes, allowing the system to level out
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and make sure that we have no non-condensibles in the system. Pulling a vacuum on the system is not just the best practice but it is also EPA required and we can ensure efficiency and longevity of the system. Non-condensables in the system can cause damage to the compressor and the evaporator coils. It can also cause freeze up in the evaporator coils because moisture can freeze up in the system if we don’t pull it out with a vacuum pump. When the moisture freezes up in the system, it can also reduce heat
00:01:52
transfer which is an effect on our efficiency of the system. When we have non-condensables in the system, it can cause damage to the compressor and the evaporator coils, which is a major repair and can get very expensive. So once again, this is the vacuum pump hooked up to the manifold gauge. This is our vacuum line that we hook up to the manifold gauge. And our gauges are hooked up to the high and the low side. This is Isaiah Marian with HVAC Technical Academy.