HURRY THE WALK IN COOLER IS TOO WARM

one thing turns into another right so we were just talking right now and we noticed that this walk-in freezer compressor hasn't ran so we went downstairs and the box is at 25 degrees and then as we're talking this one goes off on high pressure bypass where the internal pressure relief started bleeding the pressure from one side to the other we have an extremely hot discharge line and this guy just restarted i have a feeling it's going off on high pressure and then we open this up because this condenser fan motor is not running and there's actually an electrical short in there this video is brought to you by sportlin quality integrity and tradition well this morning we have a call that a walk-in cooler is not working and i don't know if you guys can hear that but to me it sounds like it's low on gas you can hear the expansion valves feeding the way they are we don't see any ice no ice on the coils and the thermostat says 51 degrees so that thermostat controls a solenoid valve that tells the system to turn on so judging by the sound that i'm hearing we're low on refrigerant so we're gonna get up onto the roof and see what's going on up there making an assumption that it's low on gas so i came out to my van to grab a drummer refrigerant before i go into the roof but before i do that i typically don't take my scale on the roof i'll just weigh it down here so we're going to write 21 pounds you can see i do that all the time so we're right 21 pounds on here and then when we're all done we'll subtract the difference and find out how much gas we use all right done a lot of work on racks like this one and this one in particular you come up this is our walking cooler compressor it looks like someone left a thing up here what the heck um and the sight glass looks to be full but it's actually more than likely completely empty so we need to put some service gauges on this guy once we put gauges on it it'll kind of let us know what's going on within the system before you put on service gauges you always want to investigate the system so first and foremost i see some oil right here it looks like it might be dried though but when we track around to this side i definitely see something going on here we've got a big oil stain that's fresh oil all over this valve and this is a newer receiver there's no reason there should be oil coming from that unless something's not tight or you know who knows but we always want to pay attention to that because sometimes you can correct refrigerant leaks by just applying your service gauges so you always want to be vigilant we're quickly doing this before we take all the caps off but i saw some oil on this too so i sprayed it with some big blue i have a feeling it's just very very small leaks and i have a feeling these are not the source of the potential low refrigerant charge i think that they're adding to it but i bet you anything we're going to find leaks in the evaporative coils but this one right here i want to show you something i haven't done anything to it yet and look at this boom this guy's loose so this guy is not even tight which is definitely going to cause a problem that needs to be tight and you can see it leaking right there i'll put some big blue on there [Music] [Applause] see when i took it off i could see a bubble bubble yeah we're getting little micro bubbles it's hard because it's vibrating but we're getting little micro bubbles right in here so this packing is definitely going bad on this one so we definitely need to look into that but at this point um i put some on the other one too and i'm not seeing anything major so we're gonna go ahead and apply the service gauges and finish our diagnosis all right so when we're applying service gauges i know i'm using this wrench backwards but there's no way to do it plus we're not having to torque very hard but you always want to loosen your packing just a little bit okay um [Music] before you actuate this stem because you can wear out the packing gland in there so just ever so slightly loosen it then you can actuate the the adjustment stems okay as we're applying service gauges when you actuate these valves all right we want to i guess you can say mid seat but really we're just going to crack this valve just going to push the plunger this guy right here the stem down in there about one and a quarter turns okay and that's going to open the process port or the port coming out of it so that way our service gauges can read pressure okay that's about it you don't need to go any further than that if you go too far you're actually going to shut off the flow of refrigerant through that valve okay all right so this is a 404 a system it's currently about 65 degrees outside so you can see my liquid saturation temperature which is the condensing temperature the temperature of the refrigerant in the middle of the condenser inside of it is at 62 degrees when it's like 65 degrees outside you should have approximately on this type of a system 25 to 30 degree temperature difference between outdoor ambient temperature and the saturation temperature so we're clearly low on refrigerant now remember i showed you the sight glass it looks crystal clear because it's completely empty of refrigerant okay that sight glass doesn't have liquid a solid column of liquid refrigerant and that's why we heard that sound downstairs so we need to add refrigerant to this system but we also need to find a refrigerant leak too um we're going to go ahead and shut the system down and do a quick leak check see if we see anything obvious jumping out at us um and then we'll add refrigerant as uh necessary all right we shut down the system and what's actually happening is the system's equalizing out because the liquid line solenoid valve is still open downstairs but we're going to speed that process up we're going to purge real quick just to make sure we got any air out of the lines and then we're going to go ahead and open up high side into low side so we can equalize out the pressures so we have you know high suction high discharge and helping us with the leak search so everything else is off and we're going to go ahead and get the leak detector out we're going to pull the covers for the condenser do a quick leak search now if there's a leak downstairs in the evaporator section we can fix that by pumping the system down if there's a leak upstairs on the high side anywhere between the compressor discharge and the outlet of that receiver we have to recover the entire charge to fix that leak so we're going to look for it first real quick on the high side just to make sure it's not a major leak on the high side and everything else can be repaired after the fact we can go ahead and top off the charge you know and get them operational if need be if it's downstairs doing a quick leak search i'm not really seeing anything jumping out at me on the condenser you would think we would see some oil signs and stuff i don't really see anything let's uh yeah it's very minimal what's on here we also found that these guys were loose which would definitely cause an intermittent leak but i don't see anything else always check your pressure reliefs on your vessels receivers okay nothing there so nothing's jumping out at me um do a quick pass under this condenser i'm not going to spend a bunch of time just to make sure now i have my leak detector on turbo so it'll typically pick up quite a bit check around your flare joints you would see if it was leaking around the flare joint because you would see oil all around it typically but always check them just to be safe i'm checking the bottom of the condenser i it's not common to have leaks on these condensers typically they're in the evaporative coils this evaporative coil i can tell you is from i think 2003 so it's an old system 05 actually i just walked by it so always check your pressure control high side nothing definitely picking up something up in that packing gland but we also have the packing open so that's always something to remember so on the field piece you remember it reads right here but then it also reads on the light on the tip so i like that so we definitely have something going on there but i have the packing open so that's not completely unheard of all right so there's that check that guy i'm not seeing anything really on the high side let's check down here where we saw this oil nah nothing okay so at this point our leak is um probably not going to be up here it doesn't seem like it's in the condenser i mean there's minute leaks on the valves at this point we have to get this system operational now we're going to need to do a leak search downstairs too um but uh we're gonna add gas to it no matter what so we've done leak repairs on this coil before i think i fixed leaks right on that when i changed that receiver and i think i did another braze joint too maybe on the other coil but you always want the fans off when you're leak searching okay so we're going to take our leak detector start at the bottom of the coil they'll pop out at the bottom so the refrigerant falls come over here there we go that that lighted tip makes it really nice we definitely got something going on right over there we need to get some at this point get some soap bubbles on it but you don't just assume that one leak is the problem you keep tracing yeah i i suspect we're gonna start having a lot of leaks on this coil because um once it starts leaking you know the joints start leaking on everything really should replace it but we'll see all right we got some viper big blue on there our refrigeration technologies big glue whatever you want to call it um and right down here right down in there we've got bubbles for sure and i can actually hear it leaking out so we're going to keep going we're actually picking up leaks on the other coil too so we'll jump in on that one with some big blue and try to pinpoint them okay so this side has multiple leaks too same thing viper big blue right up there that micro cluster of bubbles is elite looks like maybe there's one down here at the bottom too possibly and then there's definitely one right over here so we've got multiple multiple leaks it seems to be at the same spots we'll mark those we're checking the other side of the evaporator coils too these are all repairable customer really should consider replacing this coil but i think we're going to put some welds on these just for now so on this second coil i marked it we have a leak right there with the sharpie pointing down we have a leak right at the bottom of that tube right there then we have a leak right at the bottom of that tube right there and then also up there and i marked that one too so then we're gonna go over to the other coil mark those ones funny it's almost leaking in the same spot so right on this guy down on the back side it's kind of hard to see but there's a micro cluster of bubbles back there then right down there on that distribution tube then actually right up here on this distribution tube too so i marked it so this coil has three leaks the other one has four leaks i think so what a mess okay we're gonna pump this guy down so we need to close both of these guys because they were equalized out and then we're going to turn on the compressor and then we're going to front seat suction service valves on the other side i mean on the receiver we're going to front seat the king valve all right so that's that we're gonna do here is turn this guy on [Music] there you go it's running now and then we come over here and we need to front seat this king valve all right in front seating the king valve right what you want to do is you want to actuate the packing so the packing's loose all right now when you actuate the packing it is going to leak guys and notice there's a little bit of oil coming from this that packing was already loose actually that's part of the reason probably but then verify this is on tight if you don't have a gauge hose on there which i don't so and we're just gonna front seat the king valve which is drive the valve stem all the way in and then what that's going to do is stop the refrigerant flow coming out of that valve so now the refrigerant will not pass past this point right here and the compressor keeps pumping until the suction pressure gets lower and lower than it finally shuts off you come over here so the refrigerant flow has stopped coming out of the receiver which that liquid line goes to the solenoid valve expansion valve and then it uh you know comes back up on the suction line the high side in the compressor isn't gonna leak through but check this out see see how it's i don't know if you guys can see that yeah it's bubbling right now because it leaks out the packing okay so high side low side low side right now is about to turn back on you can actually actuate it by sticking a screwdriver right in here get it to turn back on but it'll turn back on here in a sec [Music] so the compressor is not allowing gas to pass through inside of the scroll assembly right so um and it's not turning on so we're gonna have to go ahead and uh actuate it i just stick my screwdriver into the bellows very carefully push up it's going to pull down but you don't want to pull a scroll into a vacuum it's pumping down right now right about there 3 psi and then we're going to let it sit don't see anything major it's not rising anymore so what we need to do is actually open up the low side and vent the remaining pressure into the atmosphere okay that's considered a de minimis loss because we have to have a place for the pressure that's going to build up when i braise on the system to go so you always leave that off when you're brazing on a pump down system all right getting into some of these spots is pretty tight to sand it appropriately and we want to have the best surface possible so i have two different tools i take a fitting brush and for a drill break it off i mean for a you know copper fitting put it in the drill and then also i have the dremel tool we'll get in there with both whatever fits best the situation and try to clean up those brace joints never going to be perfect but it's better than it was sanded it pretty good in there same thing over here pretty good in there down here was really difficult to get to but we'll get in there and get them braised up we're working on the other side right now just because of the amount of leaks we're just going to go ahead and braise up there's only two distribution tubes per side we're going to braise them both even the ones that aren't leaking because uh they're all just leaking over time it seems like so got them pretty much sanded up as best as possible again this is the hardest one we're going to clean them up dry them up and then get in there with the torch and lay a couple beads on them all right we're just going to heat them up and lay a bead on them using a small tip [Applause] [Applause] doing it a little different because i don't want to overheat it so i'm just laying a bead on there and then we'll melt it all into it like that backside is going to be kind of tricky but it's glowing there we go there's one again doing the same thing just laying a bead on there and then we're gonna let it melt into it just so we don't overheat it cause a bigger problem here see it flexible make sure it takes back i think they're good okay now these tricky ones is these ones without burning the entire thing hello it looks like it might have been brazed on before two laying solder on the top letting the heat pull it down this one's kind of the hardest from the other side [Music] okay that's it for this side now it's tricky these aren't perfect but got a lot of solder on each one of those joints should be much better than it was also soldered these joints like crazy same right there and we're going to cool them off and jump onto the other side so we lay a bunch of goobers on the top it's a little different than what they teach you in school and then we heat it up from the bottom and let it drip down in situations where it's hard to get to that's a good little trick to make sure that you get good solder flow so that one's good the bottom one's going to be the trickiest kind of the same thing just uber it on the top get plenty of solder on there and then it'll flow with the heat now as we bring the heat down to the bottom [Music] should be good now the last side [Music] [Music] all right so this side's good now some breeze joints all corners make sure we didn't blow any holes in the line we'll inspect them all and then we'll get upstairs change the dryer and evacuate the system all right so we're going to use some mechanical advantage here what we're going to do is use the wrenches against themselves okay so i can do one-handed well maybe not all right two hands yeah and that thing comes apart yeah you gotta be smart about it try to use the wrenches in the right direction if possible okay so sometimes you gotta flip them around but majority of the time and music in the right direction so nothing wrong with this sight glass it's fairly new just swap out the dryer again same thing mechanical advantage just use the wrenches sometimes i'll use my canipix wrenches but i find that the adjustables are a little bit easier for this so what i'll actually do is use the ground there we go pull this apart again that's what i love about the spoiling catch-all and see all this male female i dig it you got to make sure though that that copper bushing's in there because that's what seals it from refrigerant leaks all right so we're going to take a little bit of nylog right here easy peasy just put a drop right here not much don't get it in you want the dryer pointing towards the sight glass in most cases now it's not always going to match up it kind of is what it is on that i'm not too worried about that and then we're going to use the mechanical advantage again of the wrenches to kind of just put them together there we go good quarter turn past snug all right so now we're good dryer's pointing into the side glass we'll make sure that the side glass is pointing that way we're going to go ahead and take a drop of nylon right here drop a dialog right here and then the most important place for the nylon is actually right on this flare nut right here on the mating surface where it spins that really really helps just like that [Music] do it snug [Music] [Music] mechanical advantage again did you hear the torque wrench click is my elbow clicked [Music] okay all right dryer's in it's torqued down as tight as it should go now it's always best to use a torque wrench guys i don't use one i probably should but um i kind of know what's tight and what's not tight enough i'd be kind of curious to check myself against a torque wrench but anyways it's all torqued in uh we're ready to go get all the tools to pull the evacuation now all right i am going to pull my evacuation through my gauges it's not you know the best way to pull a vacuum but in this situation we have a pump down system and i've said this many times you're never going to achieve a perfect vacuum we're only pulling on the low side the compressor is not 100 leak free nor are any of those valves that are blocking off the refrigerant flow on the king valve okay we're not gonna see 500 microns on this guy it's just how it is all right there's also an argument to be made that technically there's probably still oil boiling out of the oil right now so i mean refrigerant so you know you're still probably displacing oxygen from entering the system but still we're we're gonna do our best to pull a vacuum um got the gas ballast open for now pulling through the vacuum port we do not want to open the high side port because um that will allow refrigerant to flow into the gauge manifold and that's the other thing too this valve right here is not 100 leak free either so when you've got pumped down systems you're never going to get a perfect vacuum even on a non-plumbed down system on an old system with refrigerant in the oil it's going to be really hard to completely dehydrate that oil just do your best let the let the dryer do its work too once the system starts back up so i was just explaining this evacuation process and i want to clarify something if we try to pull a perfect vacuum when the system is pumped down the refrigerant is stopped at that king valve over there and it's stopped inside the compressor okay but we have high side pressure on the the discharge line it's not showing because we're pulling into sub micron levels but we have high side pressure right here we are ever so slightly pulling that refrigerant out of the system as we speak right now okay it is not a hundred percent leak free if we tried to pull a perfect evacuation we could come back in two days because this would take forever but the system would be completely out of refrigerant even though it's pumped down because eventually it will pull through the king valve it will pull through the compressor ever so slightly okay so that's why i'm saying we're never gonna get a perfect vacuum on a pumped down system okay one thing turns into another right so we were just talking right now and we noticed that this walk-in freezer compressor hasn't ran so we went downstairs and the box is at 25 degrees and then as we're talking this one goes off on high pressure bypass where the internal pressure relief started bleeding the pressure from one side to the other we have an extremely hot discharge line um and this guy just restarted i have a feeling it's going off on high pressure and then we open this up because this condenser fan motor is not running and there's actually an electrical short in there it's not running at the moment but right here boom there's an electrical short so we have a multiple issue here we got some problems so we're going to shut off this rack the rest of the way and look into that condenser fan motor right now all right so we turned off power and we get in here and it looks like that wire shorted and it looks like it just shorted inside yeah just that one so i bet you anything we're gonna have a blown fuse and uh this nut had come off too so we'll definitely connect that back i have a feeling we're just gonna have a blown fuse so let's come on over here we'll grab a meter and uh we'll take a look at these fuses right here for motor one and motor two and i'm pretty confident we'll have a blown fuse on one of them so put your meter on tone and test across the fuses yep let's see what we get good fuse good fuse good fuse ooh all good fuses that's weird so why isn't that motor running that's interesting okay so let's go ahead and uh come on back over here and what we're gonna do is we'll disconnect this motor from these points i wonder if it broke the wire completely in there i don't think it broke it completely but let's go ahead and disconnect this strip it back to here and we'll check voltage and then we'll see and the motor doesn't feel too bad it's kind of tight but we need to check voltage out here so let's get the wire tape off let's get this connected uh stripped back to here cut off and then we're going to test voltage and then we'll test the motor again all right we got it reconnected and it's running now but the bearings are bad in the motor don't know if you can hear that but they're whining they're bad so we're gonna go ahead and change that motor go ahead and kill the power more than likely we've been shutting off on high pressure on everything else and didn't even know what are the odds that we had a refrigerant link on this one and then high pressure on those ones and we didn't even know yet but this really comes to paying attention to where you're at you know we're up here the whole time and it's like why hasn't this walk-in freezer turned on you know it's something you want to pay attention to and then this one went off on pressure relief you know where it was bypassing so we're gonna go and get this motor swapped out i have when i keep these truck these motors in my van but what's interesting is i still don't know what caused this motor not to run because once we powered it up and heard it you could hear bearings going bad in it but if it was a bearing that was making it not work the motor would be overheating so it's interesting i still don't know what's going on here and i kind of want to change those fuses too just for giggles because of that electrical short that we saw um but anyways we're gonna get the motor swapped out and then we'll uh finish troubleshooting from there all right so someone has the universal hub put on backwards which is kind of silly so we're having to pull it off um if you put the universal hub on the correct way you can just pop the blade off and don't even worry about the hub and you'll see what i mean when we put ours in but all right now we're going to get this guy off so what you want to do is take a crescent wrench on the top and spin the blade while holding the shaft while pulling up on the blade it'll ever so slightly move up higher and higher now do you have the allen's completely loosened so that way it can spin freely there you go just make sure they're enough to work and spin freely that should be enough and then now you should be able to grab the top of that shaft with that crescent wrench and spin the blade on there and then pull up on it as you're spinning and you see it's moving slowly slowly slowly keep doing that there you go [Music] probably got it enough now just grab the blade with two hands no let me see that crescent wrench i can get it from down here now when you get to the top you might oh hold on you might run into a problem there you go now you got it okay so we'll put the the this guy on the right side we'll get the screws out although we do have a new universal hub but get those screws out and then we'll uh mount the new motor in there too all right now we want to get this motor out but because there's wires on both sides we can't just pull the motor straight up because it's going to hit if the motor wires were all on one side it'd be super easy but what we need to do is we're actually going to have to loosen up one of these ears we loosen up one of these ears then you can bend it and pull everything out but you're still gonna have to pull the the pinch point over here is that where it's at yeah yeah you're gonna have to pull that bolt out then pull one of these loose from those screws up top down to the bottom then you can pry that out of the way and pull the motor out all right now that you got it you're going to need to pry those arms and twist the motor around so the wires go out the right hole there you go you're twisting it to the other side be careful dropping it down on the condenser [Music] now keep in mind you're gonna have wires over here too so it's always a chore here you can try cutting these it's going to be tight though [Music] still got to get that little bit up it was a little too difficult to take out so we're going to pull that other arm too so that we can pry it open a little bit more and hopefully get it out told you we'd win all right this new one even though it's not my favorite motor in the world all the wires are on one side so it'll go in a lot easier this is a century motor so i prefer the us motors the mojave ones but it is what it is this is what we got for today all right so we're going to go ahead and mount or mark the universal hub where we want it does it not spin oh there you go okay go ahead and drop it down we're going to find the perfect placement and then we'll mark it with a marker once we get the perfect placement so go ahead and drop it way down way down way down yeah you're gonna wanna okay so go up just a hair about right there i think looks pretty good to me and then down here looks pretty good so go ahead and remove the blade and then we'll go ahead and mount this guy we can even mark it and we'll make sure that we're on the flats too so so we've got it marked that's about the right spot and we gotta make sure that the allen screws are gonna go on the flat of the shaft and they are you don't want it to push down on this bottom part where it's not flat anymore okay so that's perfect right there we're gonna go and mount that and then we'll put the blade on so we ended up cutting the shaft because it was hitting the top of the fan guard okay so take the sandpaper and run it lengthwise like you're sanding a piece of pipe there you go and just sand the top we're just getting the ridge off just on the top there you go just like that just keep doing that okay that should be good now let's put that top on and make sure it fits now perfect plenty of room uh to cut the shaft we just used a band saw super easy to get in there not very violent on the bearings on the motor or anything they say that i mean i use angle grinders for years but they say that the angle grinders can actually damage the bearings in the motor i don't know if that's true or not but i just use the sawzall anymore all right we're nearing the end of the change out of the motor so we can't turn the system on until we have the motor changed i turned off the vacuum pump isolated these hoses so this is technically my decay again you're never going to obtain a perfect vacuum on a pump down system okay so that's why i didn't bother to go get all my big fancy hoses and stuff because we're only pulling through the low side anyways and i let it run for a good hour so this is to my satisfaction we're fine so i'm gonna go ahead and start cleaning up the vacuum pump and everything and we're just getting ready to turn this guy on we know we're gonna have to add gas so went ahead and hooked up the 404a remember we waited downstairs purged it up to here everything's closed evacuation slowly rising but that's fine um this guy's all finished up we're just going to put the covers on and everything and get ready to uh turn the fan motors on then turn this system on all right got the fuses changed out we're gonna turn this guy on it's running in the right direction both of them are running we're allowed to run 4.7 amps let's see what we're at 3.6 3.5 so we're fine on our current let's check the other motor too should be approximately the same yeah 3.9 we're allowed to run 4.7 so those guys are good condenser fan motors are good now we can continue on with our repairs all right power's on so we're gonna go and open up the king valve let the refrigerant flow through and then we'll go over to the other side and uh start adding refrigerant which i'm sure we're still gonna be low because we haven't added any right so this guy can get open all the way we'll make sure we fix that packing and we'll tighten on these caps really tight i don't know if i showed it too but when i pulled this guy out there was oil in it still a little drop so we'll make sure we get that on really tight and uh currently right here and we're flashing like crazy [Music] so we need to go ahead and start by clearing the sight glass and then we're gonna add the extra refrigerant we need for our flooded charge too all right i've added some refrigerant and the sight glass is kind of going from clear to flashing now if we did not have any extra low ambient components in this system a clear sight glass would be all that we need but because we have a head pressure control valve once we get that sight glass clear we're going to have to add extra refrigerant so that way when it's really cold outside and it tries to flood the condenser we have the extra refrigerant needed to do so i've got lots of videos explaining the head pressure control valves but essentially it's a valve inside here it diverts the gas from the discharge directly into the receiver in low ambient conditions to help to maintain a pressure differential across the expansion valve because when it gets really cold outside the head pressure drops and at certain times it can drop low enough that it won't feed the refrigerant through the expansion valve properly and uh it'll it'll cause issues and because the head pressure control valve dumps vapor into the receiver if the receiver doesn't have a liquid seal in it or a liquid level at the bottom just waiting for that vapor to push on the liquid then it's going to feed vapor down to the expansion valve and you never want that so when the head pressure control valve bypasses and dumps vapor into the receiver you want it to be pushing down on the liquid that's in the bottom of the receiver pushing the liquid to the expansion valve and not letting the vapor get to the expansion valve [Music] all right we're pumping down right now and it actually just shut off at about 15 psi and it's slowly gonna rise and then turn back on a few times while it gets all the vapor out of the oil of the refrigerant but a way to speed this process up is it shut off at the moment is simply just very carefully push up on the bellows of the pressure control i made it run and it's gonna pull down we'll let it pull down to about five psi and then we'll shut it off we just kind of speed up the process here that's about good all right now notice that it will rise back up because the internal pressure relief in the compressor is not going to let it pump too low but notice we're not going up too much more we're staying around 10 psi at this point we've got the receiver king valve front seated we need to check the liquid level because we ran a clear sight glass and then i added a couple extra pounds and we're going to check to see if we're at the three-quarter mark if we're not we're going to keep adding gas and i put a mark on it the last time i fixed this system all right so we've added gas and you can clearly see that our liquid level is way below my mark so this is the three-quarter mark right here and we're way down here so we still need to add refrigerant we're only at about half the receiver we still need to add a lot of gas to get it to the three-quarter mark now we are gonna cheat right now we gotta be careful about this but what we're gonna do is actually turn the system on and add gas to the low side while it's bypassed at the pressure control now we got to be careful about doing this because i didn't want to open the system up and let it turn back on and wait for it to pump down again but you got to be careful about this because uh we don't want it to um uh overheat the compressor all right we are just about there just a little bit more to go and we'll be right at the three-quarter mark all right easy peasy there we go we are now at the three-quarter mark you can clearly see where the liquid level is at so we know we have the maximum amount of refrigerant in there and i think it's really handy to mark that for the next guy that way he knows you left it there all right system is running we tightened all the packing glands on every valve we torqued the tops back on toward the quarter inch ones on so everything's good this guy's running its little heart away in fact everything else is running um so we're probably gonna go downstairs take a lunch let the box come down to temp um and wrap this one up i think we're actually we'll probably get out of here and then take a lunch after that but um everything is well and we're just going to talk to the customer they're not going to i know they don't want to change those coils right now they're really not in spending any extra money then you know just repairs right now so uh we'll just tell them you know this is like the second time we've had to fix leaks on the coils so you know eventually they're gonna need to be replaced but for now i think we're good to go it's gonna be a while but it's 44 in the box right now and it's coming down but like i told them you know it'll be a couple hours because everything in here is nice and warm and at the same time that bad condenser fan motor that was affecting their walk-in freezer and their beer walking they didn't even know that we found that while we were here so took care of it on this one but it's getting cold so even if these service calls seem repetitive like you're fixing the same stuff over and over again there's always a little something about them you have to keep your eyes open you know um there's always new surprises in this situation you know it was just a refrigerant leak right and we found multiple leaks we repaired them but then at the same time you know we're sitting here thinking and even my apprentice my apprentice was like hey i haven't seen that compressor run the whole time we're working on this and i said you know what you're right so hey kudos on my apprentice good job bud um you know he's noticing things you know and that's what's really important when you get the apprentice to start noticing things like that that's so important because he's looking at the big picture you know he's thinking about the job and he's being observant he's not just zoning in on what he's doing so we found that you know obviously there was more going on there so it's so important to keep headphones off your head to pay attention to your surroundings to listen to the noises and don't just zone out on your repair because you can miss other things in this situation the customer would have ended up calling me and i would have ended up or i maybe i probably would have seen it as we started the system up to be honest with you as i was looking at the refrigerant pressures i'd have been like why is the head pressure so high you know i probably would have seen it but still you know it's so good to just listen to what you're doing and pay attention to your surroundings you know i i'm a big advocate for saying do not wear headphones when you're on the roof or when you're working unless you're using them for earring protect or ear protection you know if you're working in a motor room or a big giant equipment room and there's lots of noises of course you want to wear proper ear protection so that way you don't go deaf in two years you know but just on a roof you know don't wear headphones don't blast a radio just pay attention to what you're doing you know that way you can really focus and find issues like this all right so we went ahead and repaired the refrigerant leaks i notified the customer i let them know that hey this unit's living on borrowed time you know but they're not going to replace the coils right now and in all honesty i don't think i mean we're going to have more leaks in the future but i think i jumped on top of it and that's important too you know when you're getting in there just start thinking about it being like you know where else is it potentially going to leak in the future let's go ahead and solve that now just sand it up and lay a braise on there you know it's not that big of a deal just braise up what you can um i want to kind of address a few things and i want to talk about number one i know we're gonna get a million comments about that that is not my meter that's my apprentices meter he likes the uei meter i personally don't care for that meter but it's working and it does what it needs to do okay if it ever became a problem i'd tell him to get another one but it's fine you know so let's just address that one because i know i'm gonna get a million comments about the meter um next thing is marking that liquid level on the receiver there's so much importance to that now i know there's going to be people out there especially some of the supermarket guys that are going to say there's no need you know don't do that you can use uh sporeline's 90-30-1 method you know all this different stuff and of course when we're we're calculating the flooded charge for a system i'm always going to tell you to lean on the manufacturer lean on spoiling using the 90-30-1 method but at the same time that won't always work okay and i will say this i've said it before in videos if i walk up to a system that i know has a leak but the system is not flashing at the sight glass yet the charge verification used in sporland's 90-30-1 method is not going to help you in that situation because if it's not to the point where it's flashing at the sight glass yet but you know there's a leak you don't know how much refrigerant has left the system so that's where marking the receiver is really going to benefit you now of course in this situation i encourage everybody to find out the proper flooded charge for your system either talking to the manufacturer or calculating it using spoilan's 90-30-1 method and then once you've charged the system with the right amount of refrigerant mark the receiver okay so then from that point forward you don't need to do those calculations you can just simply fill it up to your mark so that's what i did in this situation the last repair i did on this system i calculated the flooded charge i reached out to the manufacturer found how much it needed filled it up and marked the liquid level so now we don't need to bother ourselves too much with trying to calculate how much refrigerant the system takes okay that's one thing the other thing is when we are working on those systems um you know i talked about the evacuation pulling the evacuation through my manifold gauge assembly of course i always want to encourage people not to do that but there's certain situations where it's really not practical to hook up all the big giant fancy stuff on the system okay this was one of those i didn't see the need to do the big evacuation hoses and all that because it is a pump down system and like i mentioned in the video if you keep trying to vacuum down on a pump down system eventually you're gonna achieve that vacuum but you're probably not going to have any refrigerant left in the system because you will pull the refrigerant out of there it will take a long time but you will okay the other thing i wanted to address too because i know i'm going to get comments about it is i was not brazing with nitrogen it is very difficult to braze with nitrogen when you have a pumped down system now in a perfect world if i installed schrader ports in different places on the system then yes i could achieve it but the way that my system was set up for today there was no way for me to purge with nitrogen safely and braze at the same time it just wasn't going to happen okay because i only had one suction port on the roof and then you had two super heat ports downstairs at the evaporator and if i would have taken the schraders out of those super heat ports then i would have been pushing all that um that you know the the gases and the smoke and all that stuff uh through into the the walk-in box and it would have just been hard to breathe in there and then vice versa it would have been difficult to bring a nitrogen tank into the box and push the nitrogen up to the roof okay so it's not always practical that you're gonna get to put your nitrogen rig on there of course i try to do it as much as possible but sometimes you just got to do what you got to do okay and this was one of those situations um not really much too much or not really too much more that was special about this job it was just a standard refrigeration job um you know i had a day planned out for me i went to this location i actually was planning on doing something else this morning i was scheduled to be at a location at like seven in the morning but this call came in earlier and i had to change my plans that kind of stuff happens for me we have to prioritize calls and i always prioritize walk-in coolers walk-in freezers over reaching coolers and air conditioning calls okay so in this situation i was supposed to be scheduled to work on someone's air conditioner and then this walking cooler called came in so i had to cancel the other call jump onto this and this took me a lot longer than i planned on it i was there for about five hours in all the repairs and picking up parts and everything that we did um so uh you know i mean you just got to deal with that kind of stuff sometimes plans don't always go the way you plan them you know things have to change my customers do appreciate the fact that i prioritize my calls so the one that i had to cancel on they understand because i would do the same thing for them if they had a walking cooler down and i was work you know supposed to work on someone else's air conditioner now with that being said i'm typically not going to stop what i'm doing if i was already head first into an air conditioning call i'm typically not going to stop what i'm doing unless it was just dire circumstances i'll go ahead and finish up the call that i'm on and then move on to the walk-in cooler walk-in freezer you know uh yeah that's pretty much it guys i i hope that you guys get something from these videos you know i try to share the little bit of knowledge that i have and i hope that it helps you guys out um i do appreciate all your feedback and your guys's support i do have to acknowledge that we have several way too many to mention on the end of this outro notes right here uh several patreon supporters and several youtube channel membership supporters even people that donate via um uh paypal and stuff you guys thank you everybody for the support i've said this so many times i appreciate all the support i'm gonna continue to make these videos whether or not you guys support me via patreon or whatever okay i'm just gonna keep doing it it is it is awesome to get that support at the same time the easiest way to support this channel the simplest way is simply just watch the videos from beginning to end without skipping through anything that's the easiest way guys um and then of course if you want to go above and beyond like others have you can certainly donate via patreon or youtube channel memberships or paypal there's links in the show notes of this video for all those different methods there's another way a couple other ways you guys can support the channel if so interested is you can go to my website hvacrvideos.com we have hats and shirts beanies sweatshirts all that stuff available on there as we're coming into the fall the beanies they just say hvacr you know we have a cuffed and a non-cuffed and i should say this too with the hats and the beanies i purposely kept you know hvacr videos off of them because i want as as a business owner i don't really want my employees wearing advertisements for other people right so i figured the acronym hvacr with my color scheme is enough of an advertisement but it's also not really recognizable by the general public you know what i'm saying so you guys can i was hoping in the design that people would still be able to wear these hats you know at their normal workplace so that's why i went with that kind of a design now my t-shirts of course they say hvacr videos my sweatshirts all that stuff they're branded with hvacr videos but the hats and the beanies just simply went with the simple acronym as far as the hats go forgive the crazy hair going on right here they're a black underbill and it's hard to show on camera but these are see-through it's not a trucker hat but it is a flex fit in the back but it's i can see light through this hat it's very breathable and it's purposely meant that way because they last me a long time and i've been i loved these hats um i i used the hats for a year before i even released them for sale because i wanted to make sure it was high quality and i was really really um very important to get the black underbill on these hats because i wear my hat at work and you know you grab your hat to adjust it or something and then the underbill turns black because your fingers are all dark you know so i really like the black underbill so if you guys are interested check out the website hvacr videos.com at the exact moment i am out of small medium hats i only have large extra large but i did just get confirmation that they're shipping my new order of small medium hats i just ordered them so they should be here in about a week or two i will announce it on the channel when that happens um yeah that is it um i i want to ask you guys one favor okay really big favor there is so much craziness going on right now the world is in utter chaos people are just nuts okay i don't know about you guys but i drive on the road every single day people drive like idiots they're cutting people off nobody uses turn signals anymore people speed it's just nuts okay this world can seriously use some kindness right now just a simple act of kindness by any one of you guys you can change things okay you can change someone's day for the better by simply buying them some coffee holding a door open for someone it doesn't matter if it's a female or a male just be polite hold the door open for someone use common manners guys it's so simple to change someone's day for the better just by doing some simple act of kindness doesn't have to be anything extravagant we need more kindness in the world please guys if you can do a favor for me just just help someone out just be nice to someone you know give someone some guidance do something okay we need more kindness and i feel like if we if we all just did something it would make a difference okay be kind to one another i really appreciate you guys and we will catch you on the next one okay

Channel: HVACR VIDEOS

Views: 142,957

Keywords: HURRY THE WALK IN COOLER IS TOO WARM, AWEF COMPLIANT, AWEF EQUIPMENT, LATE NIGHT WALK IN COOLER CALL....., HVACR VIDEOS, HVAC VIDEOS, WALK IN FREEZER ICED UP, WALK IN COOLER ICED UP, ELECTRIC DEFROST EXPLAINED, WALK IN DEFROST EXPLAINED, hvacr videos, refrigeration videos, walk in cooler, walk in cooler not working, walk in freezer troubleshooting, walk in cooler troubleshooting, defrost cycle, fieldpiece mg 44, fieldpiece mg44 vacuum gauge

Id: mhThvx3G2J4

Length: 56min 5sec (3365 seconds)

Published: Thu Sep 16 2021