It's that time again, this video was shot in September of 2021 but here we are in March of 2022 and the no cool calls are starting to roll in again here in Southern California. So again when they don't do regular pm service and they only do reactive pm service this is what they get.
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00:09 VIDEO START
00:45 WTF MOMENT
02:17 BE CAREFUL REMOVING THE TOP
03:55 CLEANING TIME
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12:47 RECOVERY TIP
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14:24 BRAZING TIME
18:09 EVACUATION TIME
20:34 DUCT WORK CHAOS
23:27 TECHNOLOGY ISSUES
26:55 MORE DUCT WORK CHAOS
31:50 CLOSING WORDS
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12523 LIMONITE AVE.
440 - 184
MIRA LOMA, CA. 91752
00:00 SPONSOR CARD
00:09 VIDEO START
00:45 WTF MOMENT
02:17 BE CAREFUL REMOVING THE TOP
03:55 CLEANING TIME
06:22 LEAK CHECKING TIME
09:59 WE ARE BACK
11:10 WTF MOMENT
12:47 RECOVERY TIP
13:57 COPPER PREP TIP
14:24 BRAZING TIME
18:09 EVACUATION TIME
20:34 DUCT WORK CHAOS
23:27 TECHNOLOGY ISSUES
26:55 MORE DUCT WORK CHAOS
31:50 CLOSING WORDS
This video is brought to you by sportlin quality, integrity and tradition. All right today we have a complaint that the kitchen's not working they're, also complaining that the restroom's too hot the kitchen ac, i should say um. I went downstairs i'll pull up some pictures, but the grease filters for the hoods are plugged. I told them you guys got to get those grease filters replaced they're beyond cleaning, then on top of that again, because it's an air conditioning problem, i'm gon na focus on the ac, but i'm not gon na - ignore the exhaust system too.
So all their exhaust fans are working, but everyone has loose belts. Okay, so we went and took a belt count of everything. We're gon na get extra belts. We're gon na replace every belt put spare belts on everything.
You can clearly hear this one, because it's spinning on the pulley um, all the acs need new belts. This one needs new filters. The other ones are okay. On top of that, we opened up the kitchen ac when we first got here.
First off you don't ever just shut the acs off. Okay, we checked to make sure both stages were running. Both stages are running, but i open this up and then i shut it off after that. But then i open this up and look at this whole compressor.
Look at this compressor and look at this compressor. It's covered in oil. Look at that! That's that's a bad sign, so something's going on there shouldn't be oil everywhere. On this thing, something is a miss here.
So look at this heat exchanger, section completely saturated with nastiness. The unit the condenser, i have a really strong feeling that it's plugged up on the inside, because this is a double road condenser. So, where we're going to start oh and then the bar ac, which is what controls the restrooms uh, has high pressure codes and while the condenser you can see through it, it's very dirty, very, very dirty. So we're going to clean everything, we're going to start with a cleaning and then we'll address issues once we get past the cleaning point, but we're going to go ahead and pop the top on this unit clean the inside condenser clean out the compressor run a leak Check real, quick, i'm sent someone to go, get belts right now, once it gets belts, we'll put all those on and again we'll start with that and then we'll work our way through.
I don't really recommend it, but if you're very careful i prefer pulling the tops on these first. Okay, it's really a two-person job. One person can do it. You just got to be very careful.
What i don't like is i don't like these folds see how this is bending up. This is bending up. That's because people have tried to clean this condenser without pulling the top. You just bend the top out of the way which sometimes you got to do, but i'm just not a huge fan of that.
So we got the top off, doesn't look horrible, but it's dirty. I can see it down in there. It's dirty for sure. So we're going to get that guy cleaned, we'll get the evaporator sidewall cleaned, we'll do a quick leak search. While we have it open kind of see. If that oil is anything or maybe that's just blowback from taking gauges off or something who knows, could also be leaking schrader cores, because these are the core max fittings, which is very common uh, you can see these filters are pretty dirty. We're gon na change these ones, so this coil has like a corrosive coating on it or protective coating. I should say so: you have to be careful about the cleaners.
This is going to be perfect for the refrigeration technologies, yellow venom packs, but look at the stuff coming out of that on the inside too. It's dirty so we're gon na give it a pre-rinse like we are right now get the big stuff off then we'll put some of the yellow venom pack on there. Let it work its magic, but yeah. Look at that.
It's coming out pure nastiness, so yeah we'll get pre-rinsed and then we'll get some cleaner on there. So this is the yellow venom pack by refrigeration technologies or viper. This right here is insane because you see right here, it says you can get nine gallons, because this is pure concentrate right. So what i have in here is filled up to about right.
Here, that's going to do this entire ac and then some probably even the evaporator too. It just depends on the setting you mix it on, though you don't want to put it on the most um. You know the highest setting but yeah more than enough, and it's completely safe on micro channel coated coils, all that good stuff, so we're gon na get some of this on there. The key is put this on there and let it sit unlike some of the other cleaners.
This is just soap, it does not etch the coil okay, so we're just gon na leave it on there. Let it sit for about 10 minutes, then we're gon na rinse. It off so i still have plenty of cleaner and i've already rinsed this whole thing and the evaporator, but you can see how this stuff just sprays on nice and foamy, and then you just let it sit. I already sprayed the inside condenser outside you can spray the compressors as long as the electrical components are covered up, because it's not going to hurt anything so we're getting all that oil off that compressor and just letting this in.
Sometimes you may have to do a second pass of this stuff. It's okay! You know it's! It's not like the blue cleaners that just strip everything away. They make one of those too, but when you're dealing with coated stuff, you don't want to get that on there, because it's not meant for coated coils and things like that. But this stuff is completely aluminum micro channel safe.
All that fancy jazz. So we're going to want to rinse this from the inside and the outside i'm going to do the outside coil. First, because i can do you know you can get to all sides and it's coming off nice and good satisfying wrench. It's definitely dirty.
You just got to be careful when you're rinsing because see it's blowing into the other coil, so you got to make sure we get the other coil rinsed too. Oh yeah, it's coming through nice and clean, so that coil was just all black. You couldn't even see the blue when i first got here so do that and then once we get one side, rinse we'll go from the inside out and rinse. It too, like this, see and then boom, but you just got to be careful because it's also blowing it on the other coil. So just got to make sure you get a nice good rinse! Oh yeah, that's coming out nice and good! Isn't it satisfying when you see these things clean, there's something therapeutic about cleaning coils. I think all right, we're gon na run the leak detector over everything before we put the top on, and there was a bunch of oil on this uh liquid header right here. This accurate metering device - if we go right here, i picked up a leak a second ago here we go field piece leak, detector for the wind. This is the dr82 and it is 410a.
It does pick up 410. um, so we got a big old fat leak on that liquid header right there. So we're going to get some viper big blue on there and see what that does for us. I did a once over over here and i didn't pick anything up on here.
Uh cormax fittings are number one. Those things leak all the time, so nothing on that right now terminal plug nothing. So i'm not picking up anything over here. It's just on that.
Acurator, liquid header right here, i think no right here there you go, then you get a numerical display on this guy too. So i have it on turbo mode. Right now see if we pick anything up down here down here down here, nothing down here, i still got ta leak check the first stage, so that was the second stage, and that makes sense because my first stage suction line was condensating and the second stage wasn't Which would make sense because they should both be condensating equally, if they've both been running for the same amount of time? Nothing, i'm not seeing anything on the first stage, but we'll soap up the entire thing right now. Okay, we have multiple leaks, there's multiple spots, where it's bubbling out.
There's one right here, there's one down here, so we're going to just be brazing a bunch on this thing, but that one's probably the biggest of them all right. There probably see it a little bit better from over here, let's see if we can zoom in on that there. You go right in that area right there. So there's multiple leaks on this guy and that's the second stage.
I'm not really seeing anything else up here. So we're going to finish assembling the unit. I cannot fix this today, but we'll have to come back. Take the top off again braise, all those leaks up we'll bring a dryer with us.
Some 410a we're already pushing uh three o'clock and we go into overtime at four and they don't want to pay overtime unless they have to so we'll put this unit back together and we'll come back out for this, but we still got to finish changing all the Belts, i'm already done cleaning this unit. We need to clean that unit and then then, we'll be able to focus on this when we come back all right, we got this guy turned back on for today, like i said we'll be back tomorrow to fix the leaks, but i turned it all back on Clean condenser, clean evaporator, clean filters, new belt, so it can breathe now and then we'll also uh we're gon na have to recover the gas from the second stage, we'll go and recover the gas from the first stage too, probably going to get here early in the Morning, knock it out before it gets too hot um. For now we're just finishing up. We changed the belts on all the exhaust fans. We changed the belts on all the acs, we're cleaning the bar. You see right now now this one's not dirty enough and it's a micro channel condenser that we don't need to clean it from the inside out it'll, be fine, we're just going to get the fine crap off the coil, but yeah we're getting there all right. We are back this morning pretty much brought the entire van up onto the roof, so we're going to go ahead and recover the charge out of this guy, focusing on the second stage we're going to pressurize it with a crap ton of nitrogen and a little bit Of trace r410a and then identify all the refrigerant leaks, hopefully braze them up we'll also probably go and recover the charge out of the first stage too, since we got the machine here just to verify the charge is correct, so we got ta start we're gon na Go ahead and rip the unit apart again, just like we had it yesterday, so pulling a quick vacuum on this tank. I had previously used this on an ice machine repair and i did use 404 a, but we used all the gas out of it.
There was nothing left in it so because 404 it was clean gas. It was a. I did, an ice machine repair on an isomatic. It was from that video but um, because it had nothing left in it.
We're just going to pull an evacuation on it. There's no problem uh, you know. Let's say a little bit of oil came out with it well 410a and 404, the same oil. So it's no big deal so we're just pulling our evacuation, get it down to sub micron and we're going to start getting prepped over.
Here getting the gauges put on and everything for the recovery process, you always want to pay attention to your what's going on here, so we're getting ready to recover the second stage and check this out. I've got pressure, but i have a core depressor on here that i didn't actuate. Yet it's not even yeah, it's not actuated. So it's not depressing the schrader but we're building pressure.
So i open this up, close it and let's watch and see if it builds up again and now it's going to make a liar out of me, but it's building, so those uh high flow schraders are leaking on that suction side yeah. For some reason it's not building, but that 34 psi was. You know i i don't have it open so um in our process and our repairs today we're going to go ahead and replace these high flow schraders because they do leak yeah! That's bizarre. I don't know why it's not building anymore huh, go figure um all right! Well, we're just getting ready, we're still. Actually we're probably done with the vacuum. Let's see, oh yeah, 145 microns. Now it's normal for it to rise all right. It's gon na take a minute, but um we're good to go on this, so we're gon na get that hooked up and then start the process.
All right recovery machine is hooked up. We purged all the lines clean, empty tank got the scale running we're gon na. Go ahead and weigh out the gas and then we'll get in there, we'll probably just leave ever so slight positive pressure and then put nitrogen on top of it. That way, we can get in there and identify all the refrigerant leaks.
If you follow the epa's protocol for recovering gas, they want you to pull it into a vacuum, to verify that you get all the refrigerant out, but when you have a system that has refrigerant leaks, you can't do that. So we're pulling gas out of here and this system has leaks, so we can't pull into a vacuum because it would pull air into the lines through all the leaks. So you have to leave it, but we're gon na leave it slightly positive so that we put nitrogen on top of it and really pump this system up to find all the leaks, so factory charge on this guy. For the second stage is 8.1 pounds and we've only recovered about five pounds: six ounces, so we're definitely a couple pounds short, so we're just getting ready to put some nitrogen in this guy right now.
Okay, we're pressurized up to about 250 psi and it looks like we only have one leak. It's gon na be right here, i'll, come from the other side and see if i can get you guys, an image of that there. It is right there if the camera will focus right back in there. So i'm not really seeing anything else.
Everything else looks really good, so we're gon na get in there clean it up sand it. I got my uh fancy brush again, get you in there nice and good, and then we'll get that guy sweat up in cleaning up the copper we actually made the leak bigger. You can see it just bubbling all back there like crazy. I put a mark right here that way.
I'd know where it was so we're gon na dry it up and get on it. Real, quick, the big blue, does the trick. Okay, we're gon na unsweat this it's not ideal, but it is what it is. We're purging with nitrogen right now too, it might flare out on us.
No big deal cool. Now. I want this guy to go this way, always inspect your breeze joints, make sure they look tip top that one needs a teeny bit more heat. It has a funky shoulder on it.
Both of them just need a tiny bit more heat. They don't need any more solder, all right so now we're gon na get on this last one which is right here and we're just gon na solder. Up this fitting real good we're still purging with nitrogen, so so you see sometimes i'll do this. I beat it up really big and then i'm going to let the heat fall and melt it into everything. Give it a nice shoulder, bring it around to the other side i might as well i'm just gon na the areas around it. I'm just gon na lay some solder on it too. Just for giggles to be safe since we're heating, it up, looks good got plenty of solder on it. Just did up all the stuff in that area, nice and good, just to be safe.
So we're looking good we're going to go ahead and uh pressure test and then do an evacuation on this guy all right. While we were doing all that brazing, we had someone else recovering the charge from this stage right here. Okay, this is the first stage that had the right amount of gas in it eight point, whatever three pounds or something like that. So with that being said, we never let that system go to atmosphere.
Okay, it's still sitting it pulled into a vacuum, but the refrigerant boiled out of the oil so we're still in positive pressure with that being said, i'm going to pull a quick evacuation on here. Technically, i don't have to because we never open the system to atmosphere but we're just going to pull a quickie real, quick, we're not going crazy on the second stage. We'll get my big hoses and we'll be all fancy. But this one, because it's not critical and we never opened it to atmosphere, we're just going to pull it through the gauges.
Just real quick, just get a little vacuum on it. We're not even going to see anything crazy, so we'll let that run for a few minutes. While we're working on cleaning up and strapping the dryer and stuff, you can see that i put a spoiling catch-all and it's bigger, so we're going to have to strap it accordingly. We'll do that too and yeah.
So we're just going to let this run. For a few minutes, pull it down a little bit and then we'll end up charging both of these. At the same time, probably this is frustrating my high flow schrader course. You know you can't put normal vacuum hoses on there and you can't use a normal core removal tool, so you have to use these.
These things are leaking. I tried to pull a vacuum and it was just it sounded like it was sucking air and i was blowing oil out. You know and it's these because i just did a pressure test and it's nothing. I mean we changed point four psi.
Nothing! Nothing compared to the sound that i was hearing coming out of the vacuum pump. So, unfortunately, we're going to have to go ahead and pull the vacuum through the manifold gauge set and i'm going to have to get some new schrader depressors, because that's frustrating man so we're going to go ahead and hook up to the 3 8 hose on the Micro manifold set, pull the vacuum and then go from there, but i'm confident we don't have any more leaks. So significant change, like the tone of the vacuum pump, is much quieter now pulling through the manifold gauge set just using the schrader depressors. Now it's going to take longer and it's not a perfect vacuum, but you know it is what it is until i get those new high flow schrader depressors to replace this. So that way, we can do this properly junk we're going to go ahead and put the top on, because we know there's no leaks now. So this is a restaurant. I've shown this a while back, but while we're doing the evacuation we're waiting for that, we're going to be fixing some duct work because they've had other companies come in here and they replaced the grills, but they never installed tapers. So the ducks are literally just sitting here - cooling, the attic, so we're going to try to fix all that we've got several of them in the kitchen that are doing that.
All right. I just turned off the vacuum pump. Maybe 10 minutes ago 15 minutes ago, we're in decay right now, slowly rising we're at about 773. I'm pretty confident we're good, i'm not too much more worried about that.
So we're going to go through the process of charging this guy up now we got to charge both compressors, though, so i think what we're going to do. I don't know how i'm going to go about this right now. I have to figure it out all right. I figured it out, i'm going to reuse what i can of the recovered refrigerant, but here's what we're going to do.
I'm working on the second stage, but obviously the first stage is going to start up first and we need to charge the first stage too. But i don't want to take the gauge hoses off of the um second stage, because we pulled such a deep vacuum on it. What we're going to do is we're going to put an even amount of refrigerant in there we're just going to put in maybe three four pounds so that way, it's in positive pressure then we'll write it down. Then we'll jump onto the first stage and uh go from there now the first stage i was able to take the gauge hoses off without introducing anything because i had the schrader core depressors on there, so i was able to back those out boom and then pull Them off so we're just going to i already zeroed it out, we're already opened opened, so we're going to add refrigerant into the high side.
Let me close off the low side. Add a couple pounds into the high side, we'll just let it take as much as it can, but we'll stop at an even number, and then that way you know we don't get lost on how much gas we put into it. It's kind of hard to show it on camera, but we're charging the other compressor now and this compressor was in a vacuum. So the question is: how did i get my gauges on there without disturbing the vacuum and what i did was i cracked the ball valves and while it was spraying a minute amount of refrigerant out, that's when we put the gauges on so that way, there's always Positive pressure pushing on it and it's not pulling this out or anything like that, so we're currently charging this one, and this is the one that we're gon na start up. First, i disconnected the second stage so we'll put the panel on start it up and then finish charging the first stage and then we'll jump over to the second stage. And then we still got ta strap that dryer up back in there too, but so far. So good just got a guy downstairs doing that duct, work, repairs and fixing as many of those we're still gon na, have to come back for a few registers in the cooks line where they're busy, but we're getting all the other ones knocked out kind of put. The panel up there a little bit we're adding refrigerant on the low side it's running now i did have to jump right out, but first stage is running: we're just adding refrigerant we're trying to get to 8.3 pounds so we're almost there and then uh got an Extra drum for the remainder that we need for the second stage, so a little bit out of time, all right we're having problems here, um, here's, what we're doing.
Okay, i have measure quick on my phone. Um lost my train of thought here. Here we go. I'm setting it up.
First and foremost, let's go to my toolbox. Okay, i have everything, mapped low pressure, one low pressure, two high pressure, one. We have a two stage unit right and i realized that in measure quick, you have the stage circuit whatever the name is different, but this is a two-stage unit. Two separate stages: okay, um, two separate sets of probes, so i've got all the probes all on here.
Everything's, fine, okay, i go into multi-circuit multi-stage, i'm all confused on. I get it. The only thing that tells me is this one set of probes, so we have multiple sets of probes for two to four compressors. So we click on this.
We choose two circuits. Okay, now it starts on circuit two. When i click on circuit two, it doesn't. Let me switch to first circuit.
What am i missing here? All right, um, i don't know what else i haven't even profiled everything yet may! Oh, you know what well let's try this, but it's interesting that it starts on second stage. So, let's change it to two circuits. Let's change it to package unit variable airflow! This is a what is my tonnage on this guy come over here. This is a seven and a half ton.
It's a zero zero eight. So it's gon na be a seven and a half ton all right, uh, we're fixed orifice metering device. Just correct me! If i'm doing something wrong here, uh everything else is auto calculated i'll leave the super heat and everything where it should be. It's a 13 to 16 seer continue.
Now we go okay. So now it's letting me switch that, but now i got to do everything. Oh, no, i don't need to do it for all of them. Nope yeah.
We got to change it seven and a half tons. It's weird that you got to change it for each one. Continue! Okay! So oh and see yeah, that's weird! Okay, so you got ta, set it as a piston for both of them. Okay, it's interesting all right! So now, okay, i see how to switch it, but it's kind of weird that it started on second stage and there was like nothing there to tell you that, but okay, we're gon na finish, going through everything. Now all right, we're setting up i'm all probed up. We got to go into my uh honeywell jade controller. You guys aren't going to really be able to see this, but well. I guess you can.
Let me get in here. So we're going to go into set points. It's going to be kind of hard because the glare that you guys are going to be seeing here so we're going to go into set points. I'm going to find my minimum outside air position.
It's set at 4 volts we're going to change that down to 2 volts so that way, the outside air damper closes all the way. So we want that closed for troubleshooting purposes and we can go through the unit and verify everything is working properly. So outside air damper is now closing and we're just going to give it a little bit to stabilize out we've got measure quick pulled up on my phone, both circuits. We can see them all so we're going to give it some time before we start playing with anything, i'm having some airflow issues and i wanted to inspect the ductwork.
This is my return. Look at look at how smashed that return is. We've got one duct right here, but even up in there like they're they're smashed through a hole in the wall too. That's my supply that looks decent, but this return is no bueno.
That's horrible! Look at that thing dang and we barely got any air flow and the return air grill is really dirty too yeah. What a mess i'm just looking at the supply stuff, this this guy's, barely moving any air. This place is a joke. All right this place is a mess.
The duct work is just horrendous. We're having really low superheat when properly charged on both circuits and airflow is like non-existent. We have a 27 degree temperature split uh, it's saying, airflow's really low. So what we're going to do is we're actually going to open up the outside air damper we're going to go to minimum position set point.
I know you guys can't see it too. Well, we're going to open that back up to about five and we're gon na see if that changes our superheat and changes our uh airflow, and if it does, it just further, proves my point that we're not getting enough return air and open that guy up to Five, that's gon na be almost all the way open. So that's gon na bring a lot of outside air, but it's gon na take a few minutes. I'll come back on here in a sec, this is still giving us problems.
It's not fixing all the air flow, which kind of leads me to believe it's on the supply side too, so we're gon na have to come back in the morning. We've got the ac running it's cooling down in there, but i'm just not getting the airflow that i want and my superheat's too low on first and second stage, um, it's a mess. I went out like into their some other parts of the restaurant too, and the supplier diffusers are the same where the ducks are just sitting inside of them and they're all jacked up. So we're gon na have to investigate the ductwork some more, but the unit itself is operating as best as it can. I mean with you, know, limited airflow and stuff, so we'll uh we'll definitely be dealing with the ductwork later all right. What am i doing wrong here? We're having airflow problems too? This is why, with the multi-circuit, everything gets jacked up, and i don't i just don't understand what's going on here and i realize i'm calling it the wrong thing, whatever all right so look. I have 2200 cfms of air okay, estimated right temperature split, but i'm on single okay, when i change it to multi multi-circuit, multiple sets of probes for multiple circuits, two to four compressors: okay, two circuits system info piston: that's all fine number of circuits. There's two continue.
Okay, now we're showing 21 cfms per ton. Okay, i get that, but my airflow is 315 cfms. Why? What is going on here? So if i go to circuit circuit, one yeah, i'm confused on. What's what am i missing here? Why is this so difficult to calculate the airflow? We shouldn't be on split, but i don't think that's going to make a difference here.
This doesn't make sense to me. So if i get out of this and just go to ac heat pump and then change it all of a sudden, i can see 2200 cfms of airflow. So i don't get it all right. We definitely have some airflow issues, but i some of my stuff is going on with measure quick, too.
I was trying to use multi-circuit on measure quick and i got out of multi-circuit and i'm actually seeing 2100 cfms of airflow now, which is still low. But it's a little bit more reassuring than seeing 300 cfms of airflow, so there's something funky and measure quick. I don't know what it is. I haven't had very good luck with the multi-circuit multi-stage, whatever you want to call it um, but anyways we're back on normal mode, we're just looking at one circuit.
My superheat is still low. My temp split actually is about where it should be. To be honest with you, if you look at the temp split, it's calling for 23 degrees and we're at 25, so that's not too bad, actually um, but uh. We still want to fix the ductwork issues, though so we're still going to come back for that.
But the unit is working, we're going to close this one out and then we're going to talk to the customer about correcting a bunch of ductwork stuff more than what we already did today. So look at the inside of that return. Duct, there's like inches of it's just full of grease. The whole duck needs to be changed that one's better, still nasty as fudge, though, so it's always about the big picture right. You know looking at the big picture when the customer allows it. We have to be careful with that right when the customer and your company allows it. Looking at the big picture can help you with your troubleshooting, so i was called about their kitchen ac and i didn't want to ignore the fact that maybe the exhaust fans weren't working because that can affect the heat in the kitchen. So, first and foremost, i found all their grease filters were plugged it's hard for you guys to see in the pictures that i threw up there but they're beyond cleaning those filters are impacted and with hard grease, they just the customer, hasn't been cleaning them properly.
For so very long, it's time to just replace them. So that's one thing: we can't ignore that. Then we got the customers approval. They do reactive maintenance here, they're not doing preventative maintenance.
So we changed every belt on the roof cleaned the condensers got all that going. So once we did that, then we started diagnosing the kitchen. Ac actually came back the second day after i had a general diagnosis and repaired. The issues ran into some vacuum issues, which is life, that's how it happens, tools leak.
They get worn out different things like that. It's important that we know how to interpolate that data and make something of it right same thing, when i ran into issues using measure quick, it's about knowing when using digital tools and stuff you're being given wrong data, you can't just blindly trust an app because an App tells you to do something: okay, you have to be able to look at it and say something's not right here, so i found some quirks in there. I was able to work around it. We got the unit up and running, but i think it's so important to um to know that we can't just go in there and blindly trust something because it tells us to.
I still am a firm believer in digital tools. Digital tools are revolutionizing, this industry, but they're not replacing us they're, just potentially helping us do our job easier. We still have to be able to look and say wait. This is not a correct reading.
Something is wrong here, so you can't blindly trust digital tools. Okay, now i wanted to address something i gave a tip about recovering and using the epa rules, because the epa wants you to pull a system down to you know so many negative 30, whatever uh inches of mercury, or so i don't remember exactly what the epa Statement is, but when you're recovering refrigerant, they want you to pull it all the way down, basically to make sure that any refrigerant boiling out of the oil is out of the system. Right when you are recovering refrigerant that you are going to reuse on a known leaking system, you can't do that because if i pull down to the epa spec, then i'm going to contaminate that refrigerant with air, because if you're simply trying to pull and the system Has a leak you're just going to be pulling air into that refrigerant and pumping air into it? Okay, so that's the point i was trying to make, plus on top of that, i was going to be doing a leak search on the system, so we still wanted to have some vapor in there. So that way i can put nitrogen on top of it, which is epa approved. Okay, so keep that in mind again, we don't get tunnel vision when we're doing this work, we have to think and pay attention make our job more efficient. Okay, so i'm not perfect. I make mistakes, just like the next guy, i'm just trying to share my mistakes so that, hopefully you guys can learn from my mistakes right. I really really appreciate you guys making it to the end of the video.
It's amazing. The support from you guys check out my website. Hvacr videos.com, subscribe to the channel um i've got merchandise available on there in the show notes of the video there's all kinds of valuable information links that you can help to support the channel that kind of stuff. I really really appreciate you and we will catch you on the next one: okay,.
Lack of maintenance it's a big issue sad but it's just the truth hvacr video 100%
Well if it isn't the consequences of their own actions. maintenance people maintenance
Up early for a Sunday, eh Chris?