Warning! Sucking water into your leak detector is something you should never do! In the case that this does happen, we see how to get it out with the NAVAC NRP8DI Vacuum Pump.
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and find our handy calculators at https://www.hvacrschool.com/
All right so today I'm doing something that you should never ever do so warning. Don't ever do this, you should not suck water into your very expensive leak detector. Now this happens to be my personal leak detector. So you can see here that our little red dot is bouncing, which means that we have flow through the leak detector.
You can see that we're definitely pulling stuff in, and so now I'm going to suck in water, which is something that unfortunately happens a lot with these leak detectors and then texts don't know what to do and end up replacing a whole bunch of stuff we're gon Na see, if there's an easier way for us to fix this, when it happens all right, so we've got the H 10. I'm gon na first show that it actually works. This is my H 10 that I've had for many many moons get our calibration reference here. All right, so it works now.
I'm gon na go ahead and try to destroy it. All right so get a little bit of water here in this camp, pure aqua pura. Now we are going to suck water into this. Just like you shouldn't.
Do we suck this thing full of water and put it inside of our degassing chamber or vacuum chamber here all right, I'm gon na attach our true-blue hoses to our nav ack pump. This is the nav, a Ken our p8 di digital DC vacuum pump. It's good and check our vacuum pump oil. Thank You pump.
Oil is right where it should be maybe a little bit on the high side, but we're right right there all right now we're gon na make sure to turn on our micron gauge here. So now making sure this is valved off yeah we valve off there open open. This has no core in it. So we're open there, alright, so we're gon na go ahead and we're gon na go ahead and turn on the vacuum pump, which, with this one you hit it twice and you kind of long hold the second time just a little bit here.
You can see we're dropping to micron. Gages are pretty close. This one's gon na lag a little bit in this one, but what we want to see is this, this vacuum chamber when it was empty. I was easily able to get it down to 500 microns.
Let's see how far down we can get this thing now again, this vacuum chamber, like any system that has seals and things it's not perfectly sealed, and so, and even this gasket around here isn't gon na be perfectly sealed, but it's still effective enough that we can Get it low enough it'll start to get the what moisture ID, but you can look in here you can see. I just saw some bubbles coming out of the tip there. So moisture is coming out at the end of that thing, so we're at that we're below the boiling point now we're just using this to get all the moisture out. If you look right here, even with that small amount of moisture, we already have some fouling of the oil, the oil is a little bit creamy there.
You saw how clear it was before that gives you an indication of how small amount of a moisture what a small amount of moisture can do will show up in your vacuum pump oil on a typical system. Leave that those few drops. I addler enough to foul your oil in your vacuum pump. All right so now we're just gon na run this until this thing gets down to 500 microns or so, and then we're gon na test it. I can pump again all right, so you can see we are at 177 microns on the pump we're 452 microns here. I know that this assembly is somewhat leaky, but just as a demonstration will valve it off here and see if we jump up and and we are jumping up, but not nearly as fast as we were initially so, I'm pretty confident that this thing is dry. Go ahead and see alright, so one stupid thing, I did that you probably noticed. If you watch me do it is I put the old one in there with the test file, and so it boiled off all of the all of the refrigerant in the test.
Vial. So now we get to use a different test file, so that was kind of a waste so lesson there when you, if you were ever gon na, do this make sure to pull everything apart as best you can pull the tip off, pull the sensor out. All that before you go ahead and and do it, but we got it all below 500. At this point it should be dry, so I'm going to go ahead and put the tip filter in you should leave these on your leak detector.
If you have one of these bacharach leak detectors anyway, because it helps prevent you from sucking water up in the first place, because it has this little air gap here on the side that prevents helps prevent the moisture from coming. In. So now we're gon na go ahead and hook her up and see how she do so now you can see we're floating the ball, which we would not be doing if this thing was full of water we're gon na. Let it warm up and we're just gon na make sure that it works with the reference bottle.
You always got ta wait for these things to warm up a little bit before you start trying to use them now. We've got the consistent tick-tick-tick ready to make sure that it's still working foot is working. I still wouldn't suggest doing this ever because who's to say that maybe this didn't damage something, but if you ever do pool moisture into your leak detector well by golly. This is a way to get it cleared up, i'm brian with the hvac school podcasts and hvac our school comm, thanks for watching.
Where did you get the chamber
True blue hoses just because he's a baller
Is that vacuum pump explosion proof? If so it could be used with hydrocarbon systems.
Excellent demonstration. Are you in Ottawa ?
wonder if that would work for other devices like cell phones?