SOMETIMES AFTERMARKET OPTIONS ARE NEEDED

[@josephconway1968]

Hi Chris. I've been a subscriber since I discovered your channel in early 2021. I've been out of the trades close to 10 years now. I watch your videos religiously! I've learned so much watching you. You have even answered a couple of my questions on the live stream before (very cool)! At the end of your videos, when you express your gratitude. I'm always thinking, does he realize how grateful we are? I sure hope you do Bud! If you stopped tomorrow, (1,2,3, Please Don't Stop), You owe us Nothing!! You and hvacr survival are difference makers!! I thank you for that!! ✌🏻✌🏻👍🏻👍🏻😁😎

[@HVACRVIDEOS]

Wow man that an amazing comment and I’m gonna send that over to Rick too thanks so much for watching and your continued support!

[@josephconway1968]

@HVACRVIDEOS You Bet!

[@AnthonyCaron-j4p]

I just wanted you to know that your troubleshooting videos have made me a much better technician. This is the same approach I use when rebuilding, as well. Pictures and notes will never fail

[@Bobherry]

Great video chris! I like how you started the video inside actually at the hood instead of just the fan.

[@niernor]

Your channel brought me closer to understanding and at the end doing refrigeration stuff. I´m an certified electronics engineer and got an whole new perspective to the HVAC industry, bought a good set of tools and getting an basic certification to be able to work on small systems officially. I really like your "big picture" approach since this is what I´m teaching to my students too :)

[@flyinghigh5531]

Chris I could only imagine how much time you put into these videos, but we appreciate you and giving us some great content and knowledge! I started residential install 9 years ago and I’m now a commercial service tech that works on it all. I went to school 200 hours a year for over 5 years and learned a lot but Your videos helped me dial it in, especially in refrigeration. They are my favorite because we deal with seafood storages, small grocery stores, water chillers. Don’t want you to burn yourself out, but I’ll appreciate every one you make. Thanks!

[@Zolli07]

I really feel your fustration about editing and all the time you spent on these videos, but maybe this will help to put a smile on your face. I myself not works in that industry, not even closely, i'm a SW engineer in hungary, but really like the education style of your videos and somehow got interested in the HVAC industry. We also have a AS HP at out house, and learned a lot about refrigerationfrom from you videos and really, really appreciate that. :)

[@takethe101totarzana4]

Excellent comment. I've learned a lot about hvac at my job, but as well understand my home system better thanks to Chris.

[@DBVintage]

Ran into a similar problem when removing the blade from my whole house Fan. A friend of mine has a technique where he uses a center punch in the hole where the set screw is on the round part of the shaft to flatten the metal back out. It works remarkably well.😊

[@throttlebottle5906]

yeah, that works if you're careful to not damage the threads and the set screw was in good shape and actually biting towards the center still. if the motor is junk anyway, you can also use brass tube section as thread protector and run a drill bit inside to drill part of the shaft away. that's an advanced technique and not really field applicable. a shop rebuilding the blower assembly would do that and may make(order/stock) custom extended drill bits. braze them into a brass tube as an extension, there's many tricks of the machining/modeling trades. lol

[@mark351]

How you mange to work, work and work some more and then edit and comment on 2 videos a week is amazing.

[@HVACRVIDEOS]

It does get daunting at times, thanks for watching though

[@photodan24]

I realize your intent for these videos were for your employees, but I find comfort in watching things get fixed in this incredibly broken country/world. (probably because I did camera repair for 11 years) Everyone can benefit from your troubleshooting technique and I'm learning about how air conditioning/refrigeration systems work. Any chance you'd consider doing a basic concepts video? (what is the purpose of high-side and low-side, etc...)

[@SoullessProductions]

HEATCRAFT the one hit wonder. Welcome back sporlan!

[@fredlendzian7082]

Great video on my 30th birthday

[@HVACRVIDEOS]

Happy Birthday

[@DelticEngine]

Another great video, Chris. Thanks again for taking the time and effort to put it together. It's this honest content that makes your channel one of the very best HVAC channels on here. It's not just your honesty. Your whole methodology is inspiring and thought-provoking. I can imagine that if you were not out in the field, you would make an excellent teacher of the subject from having such qualities. I do not say this lightly. You have inspired me, personally, quite significantly. This video is an excellent example of how much more it can take to perform a task without causing damage to either yourself or the part you are working on. I think you did a great job removing that blower wheel the way you did it. It was apparent that each method you tried was carefully considered to avoid damaging the wheel while giving a good chance of success. I have seen various types of pullers used and maybe there is one that would have worked here, but if you don't happen to have that particular tool then some other method is needed. Using pullers can potentially cause their own problems and make things a whole lot worse, or at least more difficult, if the materials upon which puller is used are not sufficient to withstand the forces of the puller. If the material is softer than anticipated then the puller can potentially distort the wheel making it pinch the shaft or distort the end of the motor shaft itself. Each method has its advantages, disadvantages and consequences. Using the air bags to apply a lower pressure over a larger area was probably the best way to proceed in the situation in the video. Machines are like that, what can appear to be to an outsider to be the simplest thing involves a whole lot more work and care to actually complete successfully, not to mention the amount of brain activity working out all the potential actions and consequences. Your commentary while using the adjustable wrench on the motor shaft gave me an idea: What about using or modifying an old pulley, of the correct shaft size, as a means to apply torque to the motor shaft while manipulating the blower wheel? The pulley could have a conventional bolt instead on a grub screw with a flat face to provide decent torque transfer with minimal, if any, indentation to the motor shaft. There would also be the advantage of zero grinding effect, such as from using a wrench or grips, so no metal particles created ready to cause potential mischief later on. A further alternative may be to custom grind some fixed wrenches into a specialised tool set for manipulating shafts.. Being careful and conscientious may take a little longer, but it's always a lot less time than having to do the whole thing again either because something wasn't quite right the first time or someone conceded to the BFI (Brute-Force and Ignorance) approach at some point and damaged something.

[@GeminiSeven43]

Very scary to be working right next to that open roof access, someone could back up and fall into it, it made me cringe every time you stepped back...lol. one note, at around 9:30 you mention that there is no need to take out the set screws and while that may be true in a perfect world as a maintenance mechanic of many years I have damaged a few shafts and worked extra hard be cause of someone using two set screws in each hole. Also, by removing the set screws you can put penetrating oil directly where the corrosion is to make it work better. Nothing worse than using a puller and seeing gouge marks forming as you remove a pulley. Thank you so much Chris for all the hard work and long hours not only on the job but in your studio making great content for all of us to learn from and exchange ideas. I went to school back in 1981 for HVAC but never ended up there but that training helped me so much in becoming a well rounded maintenance tech and your videos help people like me do the everyday work that we do and provide a place to learn new ideas and ways to make each job more successful. Also, sometimes I watch videos like yours to relax after a frustrating day at work because of your calm cool approach and gratitude to your workers and your customers. Thanks so much Chris and take care.

[@HVACRVIDEOS]

I appreciate that, I'm just happy my content is able to reach those who thoroughly enjoy it and find it helpful.

[@Terayonjf]

CaptiveAire started going with split taper bushing wheels for the direct drive fans to assist in motor replacements. Makes a world of difference.

[@buildingoperator3132]

i am a facilities maintenance technician and have learned a ton from your videos, thanks for sharing.

[@EdwardOrozco12]

Nice. Keep posting . Learned almost everything I do from these vids.

[@StephenCole1916]

You have a good logical approach to things. I worked in the IT field and would use the very same diagnostic ideas to solve problems. Now I'm slowly learning HVAC stuff from you.

[@takethe101totarzana4]

I truly appreciate the effort and time you put into the content. I know I and many others have benefited from your videos. You are an excellent representative of the trade. You take your own personal time and offer your time and knowledge to make us all better. Thank you.

[@HVACRVIDEOS]

Thanks

[@AllenWilkerson-fv1no]

The content you put up for us to view is awesome. I’ve got my apprentice watching them whenever he can. Makes it easier for him to understand what I’m explaining. Thanks for taking the time to share!

[@HVACRVIDEOS]

That's awesome, thanks for watching

[@JoeyShelby78]

It's back! Was wondering whaat happened to the video, great video Chris!

[@ehsnils]

For cotter pins - just split them a little on the end, enough to make them stay in place. No need to overdo it in cases like this. Another thing that can hold the shaft to the hub is the shaft is that the grease can be like glue, especially if an aggressive cleaning agent has been used. The cleaning agent might have cause the hub to corrode as well. It did look like a zinc alloy hub and zinc is electrochemically the material that's decaying first. You find zinc blocks on boats like the rudder to prevent corrosion. And I agree that 3-phase is a lot simpler than having to mess around with those capacitors. For the current measurement also compare the current going into the speed controller with the current fed to the motor, especially if you reduce the rpm with a speed controller. Most motors are however designed to run at a certain rpm with a certain load to be most efficient so a speed controller might increase the power consumption rather than lower it. But it's a snake nest of reactive power v.s. actual power and with a capacitor involved it's going to be even worse to get all that right.

[@MothBird]

Ive watched your videos for years, and recently got the opportunity to be a kitchen hood exhaust cleaner, from fan to filter, its even more interesting to me to see the service side of things now

[@GregAustin541]

Chris, this was a great video, so many important little details that you point out, this stuff is great! I think you are helping raise the bar, for better quality work and it's important to share this stuff, not many places to go and learn things first hand like you share it. You might be getting bored making this content but its good and interesting stuff. I thank you for taking the time to put this content out there, I wish I had time to do something similar. I hope you keep this up!

[@HVACRVIDEOS]

I appreciate that, I'm glad my content is helpful, who knows maybe one day I will use it to start a training academy

[@peterlibeu2156]

Thanks for the video. We have some of the Loren Cook direct drive fans with this same problem. There are some puller tools on the market that are supposed do this but I have not used them. I ended up supporting the fan wheel with some superstrut and then drove the motor shaft out with careful use of a hammer, sandpaper and lots of PB Blaster. A brass drift punch will reduce the mushrooming of the shaft.

[@carloshilarionvazquezaranda]

Buenos dias estimado Crhis, un gran esfuerzo reparar esa extracción y como siempre tienes la solución a cualquier problema todo eso es un arte. Sobre tus videos te digo sinceramente que todo tú esfuerzo y dedicación son muy importantes y si ganas dinero es lo que conlleva con todo lo que se tiene que hacer para un video y yo te felicito plenamente por que gracias a todos tus videos estoy aprendiendo mucho y es de agradecer absolutamente todo tú esfuerzo. Muchas gracias Chris. Saludos desde Coacalco Edo de México.

[@Wes_9519]

We have a similar setup for blower motors on the trucks I work on just on a much smaller scale lol. Try using your air bags next time but use a brass punch and hammer to hit the shaft. The brass will keep you from mushrooming the shaft and will take some of the shock out of the motor but gives it just enough to break the wheel free.

[@Chevy2564]

Another great video, Chris!

[@HVACRVIDEOS]

thanks bud

[@mcksysar8620]

"Assume the worst" is the best advise ever. Thanks for sharing!

[@flyinghigh5531]

Thanks!

[@Slugbunny]

Measure twice, fit once, no frustration. Good job! 👏 👏 I ended up going for automation instead of engineering, by the by. Couldn't do 5 years in school at this point, but 18 months to retrain while working is acceptable.

[@CharlesSmith-hy3hl]

Chris, I agree with the belt driven exhaust fans. I also have had a bad experience with a direct drive motor on a grill hood. We ended replacing it with a belt driven hood. It has stood up to the grease much better. As for the reostat used as a speed controller, in my opinion they drive up ampacity and shorten motor life but sometimes you just have to have them. I really enjoy all the knowledge you impart about the subject matter of the material presented. Also If I were on the West Coast I would do all I could to work for you. Your attitude about doing it right and finishing the job when you absolutely have to is refreshing. Keep it up.

[@Zetharion1]

I think the most important thing people can learn from your videos is the importance of proper regular preventative maintenance. It seems that a lot of costly repairs could have been mitigated if they had proper maintenance being done to catch problems early on.

[@nikolateslax1]

Chris, you have taught me way more than any DIY-er should know! Watching your videos has helped me sharpen my overall diagnostic skills, which have served me well and will continue to do so as I launch my new business. Full disclosure, I worked as a helper for my neighborhood residential HVAC guy, but I've followed your channel and your diagnostic process for over a year now, and it has helped me in various places. The Big Picture approach is how I've run my freelancing, and while it feels like the videos are getting pretty repetitive, I'm actually kind of liking the new Apprentice Series, and I think you might consider shifting to that format primarily, if your business will support that (because I know the business comes first!). While I don't have the financial flexibility to buy one of your fantastic hats (which I appreciate the effort you put into the design of) or even buy you a coffee (yet), I do watch the videos all the way through, every time, while I work, so thank you for keeping company through the humdrum of my (not so entertaining) day, and helping me learn something new with each one as well. Looking forward to your future uploads, might even join a Q&A stream one of these days, if I find some free time that coincides! Have a fantastic holiday season!

[@MothBird]

The strong etching on the aluminum likely means they used full strength oven cleaner, while it is fast it is too agressive around the fan motors, the company i work for uses a chemical that breaks down the grease on a protein/bio level and will not affect motor grease

[@prophetfgsm]

On the sawzall comment you made at the end of the video, i usually cut the shaft with that and then use a piece of pipe like you did but to support the motor and I hammer the shaft out with a punch to not mushroom the end of it.

[@Bryan-Hensley]

When you had it beat down on the shaft, you should have cut the shaft, used the air bags and a center punch. I have to deal with direct drives almost every day.

[@Bigrignohio]

From the engineering side, we go with single phase (120V or 277V) for any motor that can go on a 20A or less breaker. Because panel space is always a premium. 3 phase is better but takes 3 pole positions as well. That being said all those small motors seem to be going to ECM.

[@CCRAF-YT]

direct drive is affected by any vibration which is caused by the grease being deposited on the fan assembly. I think that belt driven motors are easily changed and have heavier, easily maintained bearings on the spinning fan assembly. They are also isolated from the acidic and corrosive cleaners. Fantastic video on the most neglected rooftop machine.

[@HVACRVIDEOS]

Thanks bud

[@helmsajr]

Great job Chris. Thanks for all the great videos.

[@NightWolfx03]

The one time I have worked on one of these in my many exploits, is that I have one that was noisy and the motor had ports to oil the bearings and then that ended up bringing it back to life for quite a while, it had a label that it was supposed to be oiled yearly and no one was doing it.

[@deraz9913]

Dude thank you so much for this video huge help

[@jeffreykubiak5126]

Good to see you Chris happy holidays! Babysitting 300 CRAC Units with contractors and other engineers. Life's good 17 years sober! Be safe out there!

[@HVACRVIDEOS]

Very cool bud, keep up the great journey

[@oscalerup1129]

Great information never had to take a direct drive apart so good to know. The speed controller being a rheostat adds electrical resistance, when you tested it with no load the resistance wasn’t high enough to drop the voltage to the high impedance volt meter. Like wise with the new motor now with current going through the rheostat any added resistance will create a voltage drop and because the motor is designed for a specific voltage and HZ range to achieve the rated power output it’ll still attempt that output but now with a lower voltage the motor will have a higher amp draw.

[@stevencossaboon3237]

Nice work Chris..

[@vesnacvetanovskaivikj8606]

Sometime in situations like this could help one technician to hold impeller in air and another technician to tap shaft with hammer via brass rod to prevent damage. Everything else is by the book. Thanks for the video.

[@glenmcgillivray4707]

Whenever I have had to deal with that kind of stuck component, I break out a 2*4*4. A small block of wood to bear the brunt of the abuse, and avoid doing damage. Brass is hard enough to mark steel slightly. Wood tends to do all the mushrooming just fine.

[@leosthrivwithautism]

My friend when i discovered you i had i believe 300 subscribers in my own channel. I recently passed 1.5k supporters. I could only imagine what it will feel like when im at your level man! I have been at it for years and still don't make a cent from it. But hopefully soon enough ill make it. Im just missing hours watched. Unlike you im not well spoken. And have a different niche that i guess just isnt as entertaining or captivating as the hvacr niche is. But one thing our channels have in common its about teaching and bring informative. Professionally in the tech world. But in done with that industry. So im going into the health world if i can make the transition and open my business officially. Appreciate all you do Chris. The main reason i watch is just an intrigue about your industry and learning how these big equipments you work on work and operate. Maybe one day in could collab with you on the part where our channels have in common about teaching and you could show me the ropes on how to be a better speaker and a teacher too haha. I could learn a few things from a pro like you! I may not active in the comments but i do watch! Just trying to learn tips and tricks about how to explain things and make it interesting! 👍

[@kat2641]

lol hay what you don’t understand is I am an old dinosaur AND!! even old dogs can learn a new trick. And just because I have done something my way for near 50 years doesn’t mean that I can not learn a different way that is better an saves time 😁 and your channel is a valuable learning resource!!❤

[@chrisgeorge3492]

Been watching your channel for a long while, first time ever seeing a Loren cook fan. I actually build those in Springfield, MO!

[@HVACRVIDEOS]

That’s really cool I have a bunch of these on my roofs

[@NizzleSizzle]

These videos and your knowledge have definitely helped me out. Thank you for the videos. 👍 be safe out there.

[@HVACRVIDEOS]

Thanks bud

[@eggman9713]

From the engineering side, I share your apprehension about direct drive motors being hard to replace, but we went away from belts years ago as our preferred fan spec because owners in our region don't do maintenance at all and direct drive tends to be less nuisance calls than broken or worn belts. That being said, I'm excited to see what Greenheck (not sponsored) comes out with sometime soon with their direct drive fans with their new design which is an easily removable motor, motor mounting plate, and wheel package that comes out as one piece from the top of the fan and can be ordered and stocked as a single unit for easy whole or partial swap.

[@Fluffberymoff]

Smaller single phase exhaust fans will use shaded pole motors

[@Skid6660]

I bet you could get a fab shop to put together some kind of jack stand to hold the motor side of the fan face up. If it included a collet you could use your feet to do the job of the crescent wrench and have both your hands free to put even pressure on the fan.

[@808jpm]

How's that heat pump at home doing? Is this the first winter or second? Time for an update video. Thanks for your videos, sometimes I have them on in the background while I'm working and it keeps me focused.

[@scmxrider613]

i keep a 8 inch fine cut mill file in my tool bag comes in handy for those scarred shafts and damaged spots on shafts, faster than sandpaper

[@HVACRVIDEOS]

Good point

[@potentialhvac6074]

Hey thanks for the tip! One of my accounts is a Yoga studio with 4 Captive air EF and 2 MAU. If i ever have to replace an EF motor il see if i can get the power pack assembly. You may have saved me from a potential future bad day 👍🏾👍🏾

[@HVACRVIDEOS]

Awesome, glad to help

[@jonleiend1381]

Do you ever find double setscrews? One on top of another. I frequently pull them all of the way out to make sure another one is not hiding.

[@keith_5584]

2:30 I am not a huge fan…..of direct drive motors. I dont know what you call it, but it’s hilarious sometimes when a persons brain messes with us and picks related words like that in the next sentence. It happens with people who are technical so much we miss it half the time. It’s like a glitch in the engineering program running in the brain. Literal Memory leak.

[@DBVintage]

You may not be a huge fan. But that is a good sized fan.

[@FennecTECH]

Seeing that they are cleaning it is great.

[@FishFind3000]

Any chance you can do more videos on controls and stuff around that?

[@gregmercil3968]

Wrights Supply huh? The one in Ontario? I was just there the other day, picking up a 3 phase 460v exhaust fan motor and pulley. But I’m right there with you on direct drive exhaust fans, I absolutely hate those. Earlier this year a fought hard for a couple hours on one of those trying to separate the motor from the blower. Ended up just replacing the whole unit with a belt drive unit.

[@BEASTWRANGLER]

Variable Frequency Drives are preferential. Second method is varying the voltage. Remember on the later, since PSC motors attempt to always match torque at the rotor, reducing voltage causes current to rise. It's doing that because at lower speed the motor is going to try to stay with the torque needed, current will go up. Pursuant to the equation of voltage and current are inversely proportional.

[@zekenzy6486]

Great video. Thank you for sharing. Have a nice weekend

[@HVACRVIDEOS]

You to

[@HVACRVIDEOS]

Thanks for watching

[@donrummerfield2903]

All fans and filters look clean very clean compared to the others you have worked on😊

[@HVACRVIDEOS]

Sometimes we win at life

[@norcal715]

At least The Fecal Matter did not hit the Air Dispersion Device

[@throttlebottle5906]

LMAO! 🤪

[@emptech]

AC induction motors do not do well with variable speed controllers, unless, the speed controllers are pulse width modulation (PWM) or variable speed. Most likely the speed controller you see does nothing more than to kind of control the duty cycle, like a typical lamp dimmer, using a triac. The best speed control is done using a DC motor.

[@misterhat5823]

Agreed. Triac based "light dimmer" controls are terrible for induction motors. The only decent way to vary the speed of an induction motor is a VFD.

[@philltafolla]

I bet that motor is made by PACKARD 😅. Good video on the motor swap .

[@ni_wink84]

2:30 ok the not being a huge fan of direct drive motors while working on a ..fan. ..😂 maybe just me and my juvenile humor but I laughed at that

[@throttlebottle5906]

IRL, below about 3HP motor, the efficiency gain from single to three phase is about null, everyone may argue and claim otherwise it all they like. reality bites ehhhh? (no I'm no Canadian)

[@roberttrains]

most hood cleaners i have found use LYE and hotwater to cut through the grease the issue is it does brake down more then greaase and you said

[@onlyulee866]

Do you require to install back drafts damper range hood exhaust fan?

[@timothyhaley6187]

I have to fo one tomorrow on a Saturday

[@nateyager5173]

hey just a quick question With your new a/c unit installed and running are you getting a way better energy bill and heating bill since you had it for over a year now i think. Are the run times better and more effect then before too?

[@jthatguys]

Jobs like this can be huge time wasters. Given labor rates, I can see why someone would just do a power pack replacement. If the wheel comes off easy, great. If it’s stuck, rusted, corroded, it’s frustrating.

[@SoullessProductions]

I need to know what air bag tools you use.

[@randfurs]

Surely the fan manufacturers could make it so the motor is easy to replace without all this fuss, for example with a shaft coupling and a bracket that makes the bolts accessible from the top. They just don't do it because it would make the fan 10 dollars more expensive.

[@cliveramsbotty6077]

yeah or just use taperlock

[@jthatguys]

Two tapped holes in the spindle would also allow use of a puller.

[@jacobfoxworth]

Honestly the peice of emt is a pretty darn good idea. Im kicking myself in the butt for not thinking of it myself. Even worse, i started as an electrician before i became a hvac tech. 😂 Thanks for the tip. 😁

[@waltradcliffe4482]

I watch a lot of home hvac videos, several of them have a puller that fits over the fan hub then uses the set screws to pull it, sure would be nice someone made one large enough to fit the fans you work on

[@AstoundingAmelia]

You can do this with a modified gear puller for cars, get a flywheel puller or the like and just put the pegs into the set screw holes,

[@timothyhaley6187]

I have needed to cut the shaft to remove the wheel and drill the shaft out of the hud.

[@Ronnocbot]

Did you ever do work at the old Lake Dolores waterpark (rock a hoola) back before it was abandoned in 2004?

[@HVACRVIDEOS]

No I had not it’s a bit far from my normal service area

[@JacksLore]

Great video

[@jordanhenshaw]

13:12 - Why don’t you just spin the wheel while tensioning the sandpaper?

[@HVACRVIDEOS]

Good idea

[@Nyarly_Relyeh]

God bless you, Chris!) Talking about cutting shafts. What if you pick an angle grinder adnd cut the shaft about 1/2 inch higher than wheel, so you don't need to make it long crawling? And the grinder will heat up the shaft too, it can make it break loose, theorietically. After that, insert pillows under the wheel and use some hard rod to knock the motor. Can it work out?

[@HVACRVIDEOS]

It could, in theory

[@andyguest6543]

Why not try heating the hub up to free it from the shaft?

[@andreaudio]

Hey, have you ever considered working for a day or two with some other hvac guy and do a collab? There’s a lot of other channels even from overseas that could mutually benefit from something like this. You can catch a short travel and do different stuff

[@the_tux]

I’ve got a kitchen cleaner at home which breaks down grease and it clearly states, that it’s corrosive to metal. Sometimes people should just read the instructions.

[@throttlebottle5906]

funny, because very caustic cleaners is what the hood cleaner companies always used years ago. a relative did hood cleaning for a while and got wet with it more than once, tore up boots and feet both. very nasty chemical burns.

[@throttlebottle5906]

it may have been because the grease cleaners stopped them all for cleaning, assuming a 24/7 place, but even if not, stopping an hot exhaust motor can cause shaft rust and seizure.

[@lowtemp]

Just had a dealing with a Green Heck Vari-Green direct drive. Scrapped it . Motor was 4K .

[@HVACRVIDEOS]

That's outrageous

[@bensreferigeration]

There is a big hood cleaner in so cal (bryan) that blows cleaner up the exhaust with the fans running. Stuff gets everywhere and ruins everything. I found the cleaner all over the ac and refer coils eating into them. Idiots.

[@HVACRVIDEOS]

That seems all sorts of hazardous

[@paulphillips4148]

Those fan blades could ruin your day, I started in 1972 and your father could tell you about the night mares

[@dubstepwoof]

Rubbing alcohol is great rust remover for the more Corrioded shafts another good penetration oil is acetone and transmission fluid mix 50/50 old mechanic trick

[@DanO181919]

I’m drinking alcohol while watching Chris’s videos. Does that count

[@750kv8]

01:21 - In some or many countries power companies ask for an extra fee for getting 3-phase into resintential homes, dunno if they will to commercial customers; and that while 3-phase is going by on the poles or underground right next to all of them except in some rural areas, small towns etc.; it's a cash grabbing attidude on their part on a (likely) false excuse that it costs them a lot more to maintain 3-phase power (another excuse is that household items don't need 3-phase; excuse me, what about fridge and AC compressors, some home workshop tools; switch mode power supplies only need ***2 more rectifying diodes*** at most to run on 3-phase that's all!). Like come on, why are they sticking to manufacturing and using single phase distribution transformers to begin with?? 14:57 - Those vanes seem to be there to move air through the motor box. In through the side vents, out through the bottom holes around the motor. 18:53 - To me it's a bit ironic to watch this; I have at my feet as I'm watching this, a scrap found 850W external rotor motor meant to direct drive an aluminium centrifucal fan impeller like that there. And changing the impeller on it is as simple as unscrewing 6 bolts on its rotor flange (motor mounting bolts aren't right under the impeller either). The whole change would take like a couple minutes, I imagine (I know it because I decided to leave behind its damaged impeller). Easy as a cake. I'm not sure why manufacturers stick to absolutely inconvenient designs like that there. 24:24 - That's the most HVACR way of putting it there. The pun is always intentional. 😁

[@petermichaelgreen]

Afaict most larger commercial has three phase. The big downside of three phase loads is they take up three slots in the breaker panel, compared to a single slot for a phase-neutral connected single phase load or two slots for a phase to phase connected single phase load.

[@750kv8]

@@petermichaelgreen - Some of them don't, sadly. A better design of breaker panels could make them more compact with 3-phase, possibly. They have been mostly designed with single phase service in mind, apparently. Even if 3-phase requires more breakers, it's a something for something situation, a tradeoff. Power companies could argue, 3-phase requires 3 of those single phase transformers on the poles, and I'd reply, hey why are you doing it like this?? In my country, all of the pole transformers are 3-phase, our house gets 3-phase, the meter is 3-phase, we don't have a giant breaker board, power company asks for NO extra fee. WHY you can't do the same in NA??

[@johnsullivan3909]

You need the right puller.

[@ed6837]

Could also cut the shaft between the wheel and the motor then drive the shaft out of the wheel

[@throttlebottle5906]

BZZZZZ, motor running and locked sound. by 1:04 as your walking towards it. broken belt and motor running id an very different sound. also current check, lack of exhaust flow and noise down the ducting would tell inside the building. eyes, ears and scent will tell you a ton before even touching anything.

[@dotz0cat]

Only thing I would have thought of doing differently would have been using a long pipe on that crescent wrench. It would have allowed for more torque with less work.

[@HVACRVIDEOS]

Good point

[@shaunkelly9053]

So three phase doesn’t need caps. I need a three phase ac for my house. Lol. Not that the caps go out often. But we just had one replaced and $400 for a $20 cap is just gouging.

[@atch_n_sons]

Call your utility provider and get a quote for 3ph power. A $400 bill will sound like a bargain

[@Bryan-Hensley]

Yeah but if you lose a lead from the contractor, it can kill the motor.

[@russk5513]

​@Bryan-Hensley True 👍 but that's where you use thermally/mag protected(adjustable) Lost-Phase contactors will prevent that from happening.

[@corbettknowles9942]

Grainger is best that I know of for motors

[@dalemarr70]

Emery cloth! Not sandpaper.

[@stevebollinger3463]

There's no reason that motor couldn't be mounted on a plate which is then itself bolted to the fan base plate via bolts from the top (surrounding the motor). The company should be designing this for service. It wouldn't fix the issue of needing to remove the impeller though, something you don't have to do for a motor replacement on a belt drive. Also even though that is single phase 110V the design could just have a VFD driving a 3-phase motor from the single phase. Then you don't have the starter and run caps and all the other wonky junk you ran into . For sure these companies are being a bit too cheap on their designs. Maybe the customers are driving that really, only buying the cheapest models.