We're doing a demonstration because we're doing a leak detection on a ductless, evaporator coil that we just got in. We found a leak on it and I don't find a lot of ductless of a particular leak. So I wanted to just verify the leak location, but I wanted to also show the H, 10 G or the this is that we actually have an old H. 10 G here show its performance again.

The new test, early detector that I just got and see what we find out. I chose this evaporator coil to do this demonstration because it's a ductless of a protocol that has a leak in the fin pack. That's how it was diagnosed, so we're going to go and do the leak detection with a couple different leak detectors pinpoint is exactly where it is, and then I'm actually going to pull the fins away and see if we can literally pinpoint the location of this leak And see if we can figure out what caused it we're working with pet 410, a refrigerant and we'll get right to it. So here I got my lease detector all hooked up.

I had this warming up for about five minutes here, so we're good to go again. This is the H 10 G model, and I have it on the small setting you can see. This was floating up about an eighth of an inch or so kind of bounce in there. Previously, this one wasn't floating that much and it really needs to be doing that.

So I went ahead and replaced the pump with Brian and before we were getting about a four to five second lag, so we would so say our leaks here. We would pass the leak and then it wouldn't indicate add a leak till you know here or if you were to pass the leak here and then you're going to check down here and then it would react to you know the leak that was up here. Five seconds later, just due to the slow pumping and it's slowly going down your hose now with the new pump in it and the ball, you know hovering like it's supposed to. It picks the leak up way quicker.

I'm just going to do a couple passes over it, we're going to see how easily it picks it up and then Brian or is going to go ahead and do it with the tesco and kind of get an idea of comparison. So right here is where it's leaking make a little indention there I'm trying to do that. Now, I'm going to show you the test. Oh three, 16-3, which is a seeded diode sensor.

You see how quick one thing I do like about is how quick it ones up yeah as you leave this one wrong, yeah, the the H in G. You got it, you got to let it run a little longer, and this is a pretty small leak on this thing. We're going to figure out how much nitrogen is losing right over our two hour period, whatever it may be, but it's a fairly small leak. One thing about this, particularly detector, is that if you block off the end, go ahead and block off the end and show them go ahead, do it again, so you definitely don't want to block off the end, because that will give you a false, a false positive, But you can see where you get right on there go back to it.

I mean it's really really kind of tonight. Yeah, so I'll mark the leak, so you can actually see what is this or than this somewhere in this general area. This one, you know if you're traveling at your normal speed, you're going to be within probably a two inch radius of the leak right by the time that it hits, and so you can just keep kind of going back to it and anybody who's actually done leak. Detection knows it's a little lower than that.

I mean this is a small wee, Lotus tube right here yeah. This is amol. It's in this tube we're going to say it's right about there, yeah that's about a half. Second one second delay, maybe yeah.

This one seems to you know, have an accuracy and in the rated accuracies I mean like almost identical between this and that, but the one advantage to this is handheld battery operated and significantly less expensive, like at the price. Oh that's awesome. We've got you know some corrosion, nothing nothing way out of the ordinary, but we're we're actually picking up the leak consistently is in the pin pack, so we were consistently picking it up on this third row of tubing right here just right about there. I need a little it a little bend in the fins, so you can find there.

It is there. It is there's actually like a little nick on the copper tubing. It doesn't really look like formal carry corrosion that I'm used to seeing and it's definitely right there right on top, probably kind of hard to you see there, but it's like like there's a little neck. It is a very small leak, but we are getting bubbles so, for those of you who feel like electronic leak, detector can't pinpoint a leak.

This was first diagnosed in the field and the pin pack, and then we read that we buy rejected here with both both the tested leak, detector and the HTM G. The performance of the two leak detectors was very very similar and they both pinpointed the league right at this point. In fact, the test - Oh lead sector, actually pinpointed it a little bit quicker. So it read just a touch quicker because of the location of the sensor, but verified the exactly cloak ation, which is kind of what I'm going to suggest that we do more often in the field whenever possible.

This is actually a leak that, if you had to in a pinch, get by and patch it you could. You could patch it. It's like, there's a little, almost like a little rough spot on the copper there. Obviously, when once you dig out the fins you've really ruined the coil, but in some applications where you just need to get by and you've got a copper coil with aluminum pins, you can patch it this way to get by.

So you can get a get a proper coil, so I'm Brian or with HVAC school and HVAC our school comm. If you would be willing to subscribe to the YouTube channel, I would sure appreciate it and also subscribe to the podcast, find a podcast app on your phone and look for the word. Hvac just search HVAC, look up our podcast and subscribe to it. I think you'll enjoy it.

Thanks for being here, see you next time on HVAC school, you.