So this is another sort of live test that we're doing to prepare for the HVAC. Our training symposium here in Clermont Florida outside of HR in order to kind of further test it. I'm gon na just make a video and the video is gon na, be the inside of a scroll compressor. I've heard somebody say the other day and it's a common thing that when a scroll compressors, not pumping they'll say that it's got bad valves and that actually comes from the old days when you had reciprocating compressors and we still have a lot of them.

So it's not the old days, it's the old days are still now and you had actual suction and discharge valves and with suction and discharge valves, because you have a piston, that's you know moving in and out as you have that upstroke that discharge valve has to Open and if that valves not present, then when it pulls back down, it will pull back from discharge and the opposites also truths of suction. So I want to show you the difference between that and how a scroll compressor works on the inside. So in a scroll compressor, you have two different Scrolls. You have the orbiting scroll, the one that actually moves, and then you have the stationary scroll scroll.

So the one that moves is on the bottom and the stationary scrolls on top, so they fit in like this and a common mistake that people make is they think that this spins, but it doesn't actually spin it actually oscillates. So it moves like this, and that is how it compresses those two fit together. These seals, these tips kind of seal against each other, and it's all just metal on metal, there's no like Teflon or any sort of gasket in there to keep it to seal. It's just a metal-on-metal fit and that's something, that's something that people will notice.

Sometimes when they first start up. When you install a brand new scroll compressor, they can be just a touch noisy for this first couple cycles and then, as they run, and the oil kind of moves around in there and creates that seal they'll actually become a little bit quieter. And you can see the wear patterns on here on the inside, where it's shiny, that's actually where the metal was rubbing up against each other. But the one thing I want to show you here is that there are no traditional valves.

There are no typical valves that open and close and different strokes, it's just a continuous motion as it oscillates, but what it does have is it has a discharge check valve in it so inside here there's a discharge check valve and if we listen really carefully, you Might be able to hear it that discharge check, valve opening and closing, and underneath here that prevents refrigerant on the off cycle from rock back through the compressor. If you have one of these that fail, you'll actually hear the compressor run backwards in the off cycle. You'll hear, can I make a sort of a sound and that's a sign that you have an issues with your discharge check valve this matters, a couple different for a couple different reasons: first off it matters, because, obviously that you don't want it running backwards if it Works to start running backwards and you reinitialize power during that period when it was running backwards, it might keep running backwards and so you'll see that in some cases with short cycling, but then another another thing where this comes up is: if you are doing something like Flowing nitrogen through a compressor, you do need to move it in the direction of normal refrigerant flow. So you would need to flow through the suction line out through the discharge line in order to allow them to be flow, because this check valve it will open even with very low pressure.

It's just that are prevent refrigerant, moving the opposite direction, but if you were trying to flow through it moving the opposite direction, it would block it via the check valve there. So that's it inside of a scroll, compressor, you're, orbiting scroll on the bottom. The part that actually moves and then you're stationary scroll on top and it's got that check valve that prevents that backflow of refrigerant. So that's all just a quick test using our new setup.