This video is brought to you by spore'ln quality integrity and tradition, looks like they cleaned up their attic access from last time. It's definitely not as dirty. Today we are here for an air balance issue which I kind of knew was coming Wow. So this is the location where I had the dishwasher exhaust that wasn't working right, and I knew that there was like an air balance problem here and yeah.

I, finally, really they realized what it was and realized how bad it was. So they want me to address the air balance so what's happening. If you guys can picture the air balance, we have exhaust fans that are pulling the unwanted air out of the building when the exhaust fans pull the air out again. I've showed this before, but think of, a paper bag if you put your mouth on a paper bag and you suck the bag collapses.

But if you cut the perfect sized hole in the bottom of the bag, the air goes right through. So the exhaust fans are running they're, pulling the air out of the building the unwanted smoke, the air, but we need to put air back into the building called make up air okay. We need to make up for what we are exhausting out so somewhere along the lines, there's a problem with the make up air because they have an extremely negative air pressure in this building. When I walked up to the building, it was actually worse than when I was here last time.

It was very difficult for me to open their door with one hand I mean I'm not exaggerating, it was ridiculous, so I need to figure out where the problem is now when we're dealing with restaurants. We have dedicated make up air units like I'm looking at right now, but we also have minimum outside air dampers on the ACS, so usually through the economizer, we'll pull a minimum outside air or a minimum amount of outside air. Okay. For two reasons: to make up for the makeup: err, obviously, but then also to bring fresh air into the building, because we do have fresh air requirements where we have to bring in so much fresh air per person.

That kind of stuff, so typically we'll pull a little bit of outside air through the ACS, we'll pull a lot of outside air through the make up air unit, and that's where we got to start. So. To start this, I need to figure out why our building is so negative, meaning that the air pressure in the building is pulling a negative pressure and when you open the door, the outside air rushes in the building. But I got to figure out why it's so negative.

So again, I'm not a certified air Balance. Technician, I'm just gon na kind of wing this and do the best that I can with the tools that I have. So. The only tools that I have is a manometer my hand and I'm just gon na go investigating figuring out.

What's going on so, first and foremost, I'm gon na go get my manometer and we're gon na find a baseline of what the negative air pressure is on. The building and then we'll start addressing where the potential problems might be, so I'm gon na take just a generic measurement right now and that's the negative air pressure measurement in inches of water column. Right now, point three: five inches of water column, of negative air pressure. On the building, okay, every once in a while, someone will open.

So all the doors are close to the building right now, so every once in a while, someone will open a door and then that pressure will go way down, but they have to struggle now. What I'll do is all open the roof, hatch, real, quick, because I have the roof has closed and you can see that number drop very, very low okay, so let's go ahead and close it down there. We go so point three: five inches of water column, of negative air pressure on the building. You can see that someone must have just opened the front door because, and now they just shut it, it's crazy, alright.

So what I need to do is first off assuming all the exhaust fans are probably running fine, but I'm going to go around and check to make sure all of our exhaust fans are running. If they aren't, we need to make sure we get them running, see. There's all the fix degrees, just testing, all the exhaust fans, not exhaust fan over there's, not working in this dish fan yes, yes, okay, exhaust fans are all working all right so here in Southern California. Typically, what's very common on the restaurants is that we take our indoor blower motors on the air-conditioning units or the rtu units and they run 24/7 when the building's occupied.

So our next step is to make sure that every blower is running on every AC and that all the belts are good same thing on the make up air and then we're gon na check and make sure all the blowers are running on these guys and make Sure the outside air filters are clean. We're just gon na go through and start checking everything. Now, if you look over here this, this a/c unit is missing the outside air filter, because it's laying on the ground - and we can take that opportunity to come up, see this unit doesn't sound like it's running, so maybe it is yeah. It's running it's running.

I can feel air, but we're just going to go around, checking every AC to make sure that and the make up air unit to make sure that the belts are good. The outside air filters are clean and the indoor blower motors are all running. We can't leave when we're dealing with this restaurant. The way that it's setup, we can't leave the the fan on the thermostat set to auto.

The fan has to be in the on mode, because we need that fan to run the entire time the building is occupied. So basically, what we normally do is any time the exhaust fans are turned on if it's a building that I've set up or I've rewired them many times before this one I haven't done, but I'll have an interlock switch. So if the hood fan the hoods turn on, then it automatically puts every AC into occupied mode and turns the fans on ignoring what the thermostat says. That's that's the way that I usually do it now.

I realize that in some other parts of the country, you guys can't do that because of humidity problems, but here in California Southern California, especially we don't know what humidity is so we're oftentimes just pulling a minimum outside air. That's not conditioned. You know no special stuff on it from the outside air, and so that's why we have to have the fans running, so I'm gon na jump around and start looking at everything and I'll bring you guys in. If I find anything strange well, I can already tell you that the kitchen ACS indoor blower motor is not running and look at these filters, NorCal dave would say plug Oh bug.

Oh, that's looking into the sunlight filters are plugged, so I imagine all the ACS are gon na be this way, but we're gon na figure out why this end or blower motors not running to again we're just going to start with one AC and work our way Through the negative air pressure is so strong that without the indoor blower motor running, it's moving the blower first, I thought it was running, but it's not. The unit has no power. It's also got a loose belt, it's not good, but um. If we come on over here, the unit has no power.

On the Jade controller. Come on over to the disconnect switch, we've got no power on the disconnect switch, so I got to go downstairs and figure out where the main power switch is. It should be a breaker, so we turn the disconnect off. We don't leave it on we'll go downstairs, find the breaker turn it on whether it's tripped or not, then we'll come up and diagnose.

I love it when we use the room for storage all right. So a c6: it's not tripped! It's just off yeah! It wasn't tripped! Well done right, yeah! No! It wasn't tripped so because I didn't have to turn it off, so they might have just rubbed up against it with their crap. I don't know let's to go check. It out but yeah.

I don't think it was tripped, so, okay, so we've got voltage now and I'm gon na go ahead and check for anything any direct shorts to ground before I power this back on, because the breaker was not tripped, but you know who knows maybe someone shut it Off we got to be careful, we don't want to just flip things on so I'll check everything to ground to see if we have any shorts first and foremost, what I'm gon na do. I have one leg on the ground and we're gon na check from the bottom of each fuse to ground, to see nothing, nothing, nothing and with just a confirm. Now we have a ground or a direct short, because I'm touching the cabinet metal, so nothing from the fuses. You know this side of the contactors is grounded so we'll go check all the contactors.

Now, okay and again, we're just being careful so disconnect switch, is still off we're going to go ahead. Just start checking terminals to ground just to show you there we go, we've got potential to ground now, but that's because I'm touching the cabinet and this guy's grounded right here so we're just texting. All the terminals check the other side for giggles just to be safe. Nothing is showing direct short to ground, so I feel pretty safe.

Turning this unit back on now, so we're gon na flip it on I'm gon na stand back fire it up. It's like my indoor flowers. Turning on we're, gon na have to tighten up that belt, but I just want to see the unit operations to make sure nothing. Scary happens.

I don't suggest ever pushing in contactors unless you know what you're doing compressor compressor condenser fan motor. So nothing scares me. Everything seems to operate so what I'm gon na do is power this unit down and we're gon na tighten up that belt and then we'll go ahead and put the unit back together and watch it operate. Remember I can't stress this enough.

We need to tighten up this belt. This is not running by the way. This is just barely moving. I just it's just the air balance.

That's moving in, so don't freak out that I'm sticking my hand in there um. We need to tighten this belt up. We don't adjust the pulley or the sheath. You leave that alone.

That is your airflow adjustment. Think of this, as airflow adjustment, we adjust the adjustment rods, but in order to do that, we have to loosen these bolts all these bolts, there's four of them. On the other side, you loosen those, and then you use this to tighten it up and we're gon na put proper tension on this belt. So we still have some adjustments, but the fan is now running.

The outdoor air damper is opening if we go too status. You're scrolling through this guy right now this is the Honeywell jet controller. This makes the economizer so easy mixed air temperatures up or mixed air temp right now is 68 outdoor air temp of 71. The damper is open.

31 percent mechanical cool fan. Speed is on low right now, so we need to check everything out. So let's come on over here and see what let's see what we're at again, we got to be careful because the building you know they're, opening and closing doors. It looks like we dropped about down 2.30 inches of water column.

We were at 0.36, so we dropped a little bit, but we're still gon na have some problems, but I have a feeling that we're gon na have plugged up air filters and all the ACS. So I'm gon na go pull the air filters out and see what kind of a difference we make. I went ahead and walked around and pulled all the air filters out of the unit. They were all dirty, but it really didn't make much of a difference, and I can tell you why, as I'm pulling the air filters out, I'm noticing that there's several ACS that the indoor blower motors aren't running on and then another thing too, is that I walked Over to this make up air unit and the filters are plugged solid, look in here and see if we can see plugged solid.

So I'm gon na pull those filters out too and then we'll jump on the ACS and see which ones weren't working that one in the corner wasn't working and I think that one might not have been working either. So we'll see again I'm talking about the indoor fans, so these filters are plugged but they're also jacked up and there's several of them that are like really thin and deteriorated. So we're gon na go ahead and get them all new filters, and I'm gon na leave the filters out for now. Let's go ahead and walk over here and see what our air pressure reading is.

Now it's like baby steps, little things at a time, so we're getting there. This is the makeup our unit, and I don't think that as tight enough, it's just going to be a bunch of preventative maintenance stuff here they should have been doing so when I get this tightened up and then we'll just keep moving, probably have to talk to Him about replacing this motor because the bearings are going out. I can't get it when I tighten it up to where it should be tension wise. I get a ticking sound coming out of the bearings, but this is this'll.

Do this is better than it was both of these pulleys? This one is kind of worn out, and this one is so we'll talk to him about replacing those. At the same time, alright make up. There is tight and back on so it's you know, just baby steps, we're just going through everything trying to figure out why they're not working. So I also see brought out my manometer for some reason it was getting a false reading.

I was seeing a difference stuff, but anyways yeah or look and we're getting there, so we typically want the building to be slightly positive. So another thing is a lot of these units. We just took the store over, but a lot of these units. The economizers are disconnected so we probably need to manually open up the outside air dampers to get some minimum outside air flowing through this without going over and start playing with the make of air unit.

I still got to finish going through the ACS. I just got done checking that belt. What I'm finding is that several economizers are disconnected like, I thought, and you can see they have the jumper in place on this. One don't know what's wrong with them, but I'm sure the linkages are all bad and stuff.

So what I'm going to do is I'm going to manually balance the building again, I am NOT a certified air Balance person. I'm just gon na do the best with what I have so what I'm doing is loosening up the actuator motor. So that way, I can spin it freely to see how I can move it now right and I'm just going to kind of set each unit to about. I don't know 15 percent or something like that outside air and then we'll see where that gets us.

Once I make my way around the building, I'm choosing certain units, the bigger units that can handle a little bit more load than the smaller units first and we'll. Try to balance it out again. This is just winging it because all these economizers, I'm assuming are disconnected so I just found this unit just sitting here motors, not hot, you know, has power we're gon na figure out why the blower motors not running, I would think it would be running right now, But we also need to put a belt on it, so well, this pulley I've got the unit shut off by the way, but this motor pulley is bad and what you can do. First off, you can look at the belt.

Look at how the belt is like shredded in a weird way: it's got a weird shape to it, but if I take, I have a belt. That's too big, but I put it on here watch. Let me just let this guy down real quick, it's just the negative air pressure, doing that. Okay, so put this guy on and put this guy on and what we do.

Is we pull this tight like this and look at how the belt gets stuck? It's because the inside of this pulley is worn down to where it's got a groove worn into it, so I'm gon na squeeze it and you notice how the belt doesn't look at the belt. Even if I disconnect to completely look at it. It's because it's stuck in there and that'll cause and see if I good I'm peeling right now, it's really jammed inside there. This is my old pulley or sheave from the video, and this is a perfectly good, pulley or sheave.

So if you look at the groove, this one's obviously closed all the way, but still just look at the groove look at the shape notice, how it's just a taper and then look at this one. Look at the look at the shape now we can also take the alignment all right here and you can see that in no way does it fit. Look at this one, the alignment you can take the alignment tool. This is just my Browning alignment.

I mean pulley tool and you can see how it fits in the groove. This is a good groove. Now, let's go to this one and look at how nothing in no way does it fit now granted it's open, but still you can see the the clear you just push this flat piece right here up against the pulley and you shouldn't have that that gap on The bottom right there again we'll go back over to this one, look at how nice and tight that is see how that one fits nice and tight, and this one has that big gap no way does it fit anything. So this pulley tool is great for testing.

For worn out, sheaves or pulleys, it doesn't really good job and then there's also a belt tool too. So you can see if the belts worn out it does a really good job. It has some excessively big ones on there too, that I would never deal with, but you can use this for all different sizes and it tells you right on there that's good for an a bell B belt, a or b so there's different different sizes. I don't even know about any of these three V's five B's.

I won't deal with anything like that C Bell AV. I mean those are way beyond what I do if I just deal with a belts and beat belts, I'm like commercial, so you can usually tell I mean if a pulley is getting stuck. You know that's it's time to replace it, but I mean a belt, but you can you can see it. You can just clearly see that it doesn't have that even gradual taper, so you know that one's just nice, and even so that just happens.

You know over time also several of their thermostats. The fans are set to that one's set to on, but a bunch of them are set to auto that one's blank. That's the one that's down, so I'm going through making sure the time set and that the thermostats are set to auto for the fan and we're just kind of going through the list, because these, like I said the fans and I'm sorry, the fan needs to be In the on position, now it isn't gon na be perfect, but putting in new filters is also going to cause a bigger air restriction because remember, I was looking at the balance without any filters at all, so the filters are gon na have a little bit of A pressure drop but may be noticeable in the manometer it may not we'll have to see, but if we were finishing today, if I had that easy fix, then we would definitely want to dial it in better. Once we put the filters in I'm returning today.

To finish up this last AC yeah, we were to recap: we had a pulley, that's bad, that's ripping the belts apart and it's in really bad shape, so we're gon na go and replace both pulleys the belt, get that dialed in and then also it has a Low voltage fuse - that's blown, so we're gon na have to figure out why we have a low voltage short where it's at I've got all my equipment to change everything out, so we're gon na get started on it and see what we can find. So my electrical section right here this is my enemy and ours turned off and I verified this. Is my control fuse right here and this is blown? I was checking this yesterday when I was here. I didn't do anything else other than that the number one place, not always, but the number one place that we have electrical shorts on the low voltage side on these carrier package units is on this economizer wiring right here running all the way over.

They short out all the time it rub out now. What I'm doing is I'm taking the unit apart, because I'm gon na change the pulley in the the drive pulley in the motor pulley anyways. This economizer has been disconnected. I've talked about these before so this is how it was sitting inside there.

So more than likely it's got a bad actuator motor or something - and you can see right here, that someone has undone all the wires, but a lot of times we still get too short. So, to make this easier, I'm just gon na pull this side panel off. So that way I can get to everything, inspect the wiring and go from there on that economizer. I wouldn't replace just the motor the actuators, something if I was gon na change, that economizer I'd put in a new Jade system and it comes as a package and when you do that, I typically don't use the control wiring anyways.

So I'm pretty sure I'm gon na go ahead and disconnect all that wiring will yank it out and then we'll just bypass it at the board and then, if we ever came back in, if the customer wanted us to put new economizer in here, I would just Run a thermostat wire, I've done it a bunch and it's so much easier that way so anyways, I'm just working on getting the side panel off, so I can get the pulley changed and I want to see the actual electrical short. If I can on these economizers. When you know, you've got a free, stat, but sometimes they'll short out I'll. Do a really good job inspecting that, but again I'm disconnecting the economizer because it wasn't hooked up and the wiring constantly shorts out.

I don't even know if that's where the problem is, but I'm just eliminating that from the equation. They usually have a bunch of wires over there and all that they're doing is they're taking our and common and powering the economizer module. And then they take your cooling stages and you run your cooling stages through the economizer and the logic board and they're says hey. When you get a call for y1 or y2, it says: hey it's cool enough outside and it opens the damper instead of opening or turning the mechanical cooling on or sometimes you can set them up.

That'll turn on the mechanical cooling after so much time. So when you really break these down, there's really nothing to it. I pulled the wires all the way back all the way out of the wiring harnesses all the way out of there. So you've got an R wire right here.

You've got a y1 wire. You've got a y2 wire and you have a common wire. That's it! That's all! That's going to the economizer, that's being used on this unit. Now, there's also a wire coming back to the compressor lockout boards for each compressor, lockout board right here.

So that way, when you get a cooling call look at that and I think we might have found the short two while we were doing it, cuz look there's a short right there interesting see, and I had a hunch that that was where it was gon na. Be it looks like the short might be right there. I might have rubbed up against something so, but anyways we're still going on this now. They also had some extra wires too for extra accessories.

They would run wires for a powered exhaust input. You know different kind of sensors and different things, but those were just being you know not used at all. So all that I'm gon na do is take the call for y1 and go directly into the compressor lockout board for each compressor. The pressure, controls and safeties are all still going to be in the picture.

I'm just going to go directly into the compressor lockout board from y1 and y2, and then it goes through the you know, pressure controls and then it goes to the compressor contactors. Most air conditioning manufacturers have great information on their electrical schematics and they have a really good legend on their schematic here. So you notice two compressor: lockout boards, a contact or transformer or relay two more contactors and ignition module and capacitors. If we come over to this look right down here, there's a legend compressor lock out one CLO, one CLO, two contactor transformer relay contact your contact, your ignition cap and then circuit breaker.

So it does a really good job. And if you want to know what IFC stands for just go to right here, IFC indoor fan, contactor ofc, you know so I love this right here and it also helps you to know so why one's going to go to CLO one y2 is gon na. Go to CLO two, so all that we have to do to wire this unit back up is take this blue wire, put a connector on it and go where this gray wire is boom done then we'll be wired in for the compressor and power from the trance Or the thermostats gon na go directly into the lockout board and the lockout board just acts as a logic. If any of the pressure Safety's open up, then the lockout board locks the compressor out and won't let it turn back on in short cycle or anything.

While I'm dealing with the electrical I'm gon na take some penetrating oil and put it on the shaft, where I'm gon na be taking it off, try not to get it in the bearings, just let it sit on there. So that way, when it comes time for me to take the shaft off, it's a lot easier, a little bit back here again, you want to be careful not to get it into the bearings. If you can, I mean I guess I'm kind of doing it. A little bit there yeah, that's where we're at before I went too far.

I just very carefully isolated. The low voltage wires put a new transformer in there and let it pull in to make sure that the motor worked I'm getting a buzzing coming from the contactor. For the indoor blower motor, so we might be changing that we'll have to see yeah, it's definitely buzzing, it's not making good contact cuz. You see how I push on one side and then, when I push on the other, it works.

So this is my indoor blower motor contactor, and I want to show you guys something: okay, no voltage drop, but when I first turned it on it was making a buzzing sound and then I kind of pushed on it and the buzzing sound went away now. Here's what I noticed, I believe that the polls inside that are dirty. So if we push on one side my motor starts making a funny noise and, let's check my voltage drop, can we got voltage drop now, so this contactors bad? When I push on it, it'll make contact, but when you push on it again it doesn't make very good contact, so the contactors pitted. So, let's check this again and now: there's no voltage drop, but every time it pulls in and pulls out it might make a bad connection and that's why I believe it was buzzing when I first got that, but that's just a great representation of what can happen.

If you have a bad contact, is that voltage drop so I don't want to keep replicating it, because I don't want to burn up my motor because we obviously were almost losing a phase. Basically so, but that's that all right so we're gon na start by trying to remove the pulley. Take the sets you actually that's the adjustments. That's rude, try not to adjust wholly because we're going to try to match the old one to the new one.

We're going to take the setscrew out all the way without losing a little more penetrating oil in there pull come on there all right and then a couple different methods you can go about easiest one is to try to fly it off. If you can, I don't know if I can by simply putting up put a wrench behind it and use leverage and it slid right off so easy peasy and then let's go ahead and focus on this other one. Now you're going to fall out, try to follow the same principle. This one will be a little bit easier because we can actually get to the key you need to get those tea handled.

Allerjies from my van I have on my just going season that off just get it loose enough to where the key can come out, misspell crawled. Now we can go ahead and sand. This up we might have to, but I might be able to cheat here, see right now, so what I'm gon na do is take my dykes or whatever you want to call these and I'm going to force the key out, see I'm grabbing and using leverage to Pull the key out once we get the key out, it makes life a lot easier, so sometimes we can get it out like this. Look at that just using the leverage.

Now it's not going to come off because it's dirty so we're gon na go ahead and sand. It now try to change. I don't know if that's going to do the trick or not yep now in the sand want to get some sandpaper I'll. Take the sandpaper, get you a thin strip and then just go to town, make it long so that when you get some leverage on it, you can actually spin the shaft with it oh come on there.

We go always off alright we're gon na clean it up. A little bit better make sure the new one will clean the motor shaft to the drive. Pulley has a split taper, because it's not a if we find that a lot in the supply houses because they can stock a lot more pulleys of these the split taper style. It's cool, I don't mind it split taper has the type of pulley.

It's got like kind of a universal hub, and then you put this split taper inside of it and it tightens it down. So you've got two holes right here with threads. Those are for taking the pulley off, so this will be fixed. You put the screws in there, you tighten down evenly and it'll push the pulley off and then the ones without the threads are for putting the pulley on and then the pulley has threads in it, and so we're going to evenly tighten it once we get it.

Centered, but what we need to do is go ahead and get our key put in now. The key I got a new key, so we should be able to put that in no problem. We can kind of get an idea and look it'll slide back and forth. We'll adjust it once we get the motor fully put on okay, I'm going to go ahead and adjust it I'll check, blower speed when we're done, but I'm going to go ahead and adjust it to the same length of my ball right here.

What I could have done is, I could have ran the motor to see how many rpms I was turning, but at the same time this pulley was worn out. So it'd have been a little bit hard to see the actual rpm. So we'll make sure we check current draw too to make sure we're glamping. That's about the same okay, this guy on it's like we got a little binding action going on a little lubricant on there, that'll help that grit off there and if you can, if we can get this guy on now, to be a little bit of a pain In the butt - yes, I know you should not hit because of the voter bearings, but that's what it is.

I did what I did so I had to put this panel, on which I hope that I could take it off to be able to do this, but the crappy thing is that these Dan carrier, if any of you guys, have worked on these things. Everything in this unit flexes this unit right here flexes this flexes the motor flexes. So you can never get these pulleys lined up. I mean you could try shimming things, but I've got a straightedge, but you can see there's a gap and then come over here.

There's a gap, but then it's tight so straight there straight there in the right corner gap gap, it's just silly, so we're just doing our best to make sure it's lined up as best as possible looks like I need to pull it out a little bit more. It's not going to be perfect because these carriers just stink man, so I tried to align it as best as possible. There's only so much you can do, but we got a nice new belt on there. I went ahead and vacuumed this out as best as possible when I fire this unit up.

I'm actually gon na put this panel right here, because I want the dust there's still gon na be dust floating around. I want it to blow this way so and we'll fire it up. Real quick bump start the motor and then finish going through the unit. This is the panel that I'm talking about if you wanted to make the unit a side, shot you'd screw that panel down, but I put it there, even when I test heat exchangers too or yeah, when I burn off a heat exchanger at the beginning of the Season throw that panel right there fire it up.

So all the nasty stuff blows out so the best I can do is adjusting it to ever so slightly positive. It's teetering between zero and positive point: zero one inches of water column, that's about! As close as I can get it now remember something: this is not perfect. Ideally, I need to fix my make up er unit, but my make up air unit. When I tighten the belt too tight the bearing starts making a clicking noise, so we need to replace the motor.

So, what's going to happen is when I replace the motor I'll put new pulleys on this and we'll get more air from this, make up air unit and be able to throttle down the AC units right now, it's winter time I had to open all the AC Units substantially to make up for what the make up air is losing, so this is just a temporary fix until we could submit a quote to get the make-up air running, but now being that, it's winter time, we won't have the complaints of the guests being cold, Because cold air is rushing in the front doors when they open them all. Right again, I am NOT a certified air Balance person. I was just kind of winging it doing the best that I could there's lots of things like adjusting the minimum outside air positions of the air conditioning units. You know that, obviously I can't leave that way, but once I go back and fix the make up air unit, then we can dial everything back in, but I needed to get the customer operational I needed to get them to where their dining room wasn't.

Freezing from that cold air that was blasting in the building, okay, there's lots of interesting little tips I dropped inside of here. One of the biggest things is is get yourself one of these pulley gauges. Okay, it really does help, especially for the newer guys that you know can't really feel or don't understand exactly what to look for when you're looking at a worn-out pulley, I can see most of them with my eyeballs, but it's always good to have that tool to Just to kind of feel it that one was a severely bad worn-out pulley, usually you can catch them with the gauge before the belts start getting stuck in there. Okay, but also to you, know, belts, don't just break you look at how a belt is broken and it really tells you a lot if you start to notice that you know the the sidewalls worn out down to where you get to the the fibers that are Inside the belt something's wrong there, you know if a belt just snaps, you know that's something's wrong.

There too, if you see multiple cracks all around, then that's. You know just a worn-out belt, but I mean you know, there's all kinds of different symptoms and signs that will tell you a lot about what's going on within the system. Okay, as far as the air balance goes, you know what I was doing was just shutting the building, leaving all the doors shut, putting my manometer and the roof hatch and then watching the building, pressurized and depressurize. Okay, every time someone opened a door, I kind of got a baseline and then I adjusted and fixed things until I got it dialed in a little bit better understand something to that.

I opened up the outside air dampers on those ACS and essentially shut down. The return air so we're not bringing as much air from in the building back up into the AC and riri cooling it we're bringing outside air in and the air that's being blown in through the outside air dampers. It's getting sucked out through the exhaust fans. That's not an ideal situation.

Okay. Obviously, the heaters are going to be running a little bit more because the building temperature is going to be a little bit cooler in the summertime. If we left it like that, they would be bringing 110 115 degree air, because that's what we get in that city and the air conditioners wouldn't be able to keep up. So what I did is a temporary fix, but it won't work necessarily in a really really cold climate and it won't work in a really really hot climate right now we have a moderate winter here in California, our temperatures are in the 50s okay at nighttime.

It might drop into the mid 40s and that's it and then you know during the day it's 50s and 60s, so we can kind of handle adjusting those outside air dampers temporarily. Okay, I don't think there's really too much more that I we talked about. I pointed out that electrical short on the carrier units those things are really common that they short out on the economizer. So I really really appreciate you guys taking the time to watch this.

I do want to point out that I am currently getting ready to start up a new YouTube channel. I've mentioned it in the last couple. Videos, it's called HVAC are tools. It's where I'm gon na be reviewing.

Hvac are tools right. I am gon na put a link down in the show notes. It'll be one of the first line items please go over and subscribe to the channel. I don't have any videos on there yet, but I will very soon I'm working on some right now.

I'm working on a thermal imaging video with a couple different thermal imaging cameras. I've been testing out a couple different pairs of the most popular pants that I'm gon na show. What what I like about them and what I don't like and some other cool stuff coming soon - that I really can't talk about yet but there'll, be some other cool videos and I'll try to post regularly on that channel too. So please give me a subscription on that.

One. I'd really appreciate it. Keep in mind that I do live streams Monday evenings 5 p.m. Pacific time work permitting so long as I can get off work in time.

I do live streams where I answer all the questions that you guys send me in the comments. I address mistakes that I made all that good stuff. Okay, so come check out my live streams too, and other than that guys. We will catch you guys on the next one: okay,.