THE MAIN EXHAUST FAN IS DOWN

Подписаться 181 тыс.

Просмотров 78 тыс.

50% 1

The customer called about their main exhaust fan, I did my best to get it going, stay tuned till the end for when I tear down a motor starter.
HVACR VIDEOS NEW MERCH WEBSITE - www.hvacrvideos.com
HVAC OVERTIME CHANNEL- / @hvacovertime
Please consider supporting my channel by
Becoming a Patreon member - Patreon / hvacrvideos
Becoming a RU-vid channel member / @hvacrvideos
By purchasing tools via my affiliate links below at TRUTECHTOOLS.COM and use the offer code BIGPICTURE to save 8% on your total purchase (exclusions apply)
Visiting my website and purchasing merch www.hvacrvideos.com
TOOL LINKS
Fieldpiece wireless scale www.trutechtools.com/SRS3?aff...
Fieldpiece SC480 meter www.trutechtools.com/Fieldpie...
Fieldpiece JobLink wireless probes www.trutechtools.com/JL3KH6?a...
Sman 480 digital manifold www.trutechtools.com/Fieldpie...
Fieldpiece MR45 recovery machine www.trutechtools.com/Fieldpie...
Fieldpiece VP85 vacuum pump- www.trutechtools.com/Fieldpie...
Wireless probes charging tee - www.trutechtools.com/AVT45?af...
Samsung 8" Tablet amzn.to/3bW8QJ6
OtterBox case amzn.to/2wgd0M5
Manfrotto tripod - amzn.to/3bPoupz
Jobi phone mount- amzn.to/2Yh2EY0
Magnetic Umbrella - www.trutechtools.com/Supco-Ma...
Bomber safety glasses - amzn.to/2yD6sbs
Bomber safety sunglasses- amzn.to/2zmhdPp
BlueVac Pro micron gauge - www.trutechtools.com/BluvacPr...
TruBlu pro evacuation kit - www.trutechtools.com/Accutool...
Accutools core removal tools - www.trutechtools.com/Accutool...
Nitrogen purging regulator - www.trutechtools.com/Western-...
Nylog blue - www.trutechtools.com/RT201B?a...
Flir One Pro thermal imaging camera www.trutechtools.com/FLIR-One...
Viper coil gun- www.trutechtools.com/Refriger...
Viper Condenser coil cleaner Venom Pack- www.trutechtools.com/Viper-Ve...
Check out my new RU-vid channel- / @hvacrtools
For Optimizing my videos I use Tube Buddy
www.tubebuddy.com/HVACRVIDEOS
Please consider subscribing to my channel and turning on the notification bell by clicking this link goo.gl/H4Nvob
Social Media
Facebook / hvacr-videos. .
Instagram / hvacrvideos
For any inquiries please contact me at chris@hvacrvideos.com
Mailing Address
HVACR VIDEOS
12523 LIMONITE AVE.
#440 - 184
MIRA LOMA, CA. 91752
TEASER 00:00
SPONSOR CARD 00:20
ORIGINAL PROBLEM 00:30
MOTOR STARTER INVESTIGATION 03:44
EXHAUST WHEEL INVESTIGATION 06:21
WTF MOMENT (ELECTRICAL SHORT) 08:58
RETURN TO REPLACE 10:39
MOTOR STARTER REPLACEMENT 12:26
MOTOR STARTER TEARDOWN 13:52
CLOSING WORDS 17:07

Опубликовано:

6 июл 2024

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 242

@burningdust 3 года назад

“I’m gonna do my best but I’m not an electrician so I’m not gonna re-wire this whole panel”...proceeds to re-wire panel more conscientiously than electrician. Hahaha been there so many times. Smart to be apprehensive though, as you said you don’t want to end up “owning”the panel and starting a long-term relationship. Best this site stays a one day stand.

@davidsharkey3483 3 года назад

Love how you pull the old parts apart ,no one else does this .Its always good to know why something failed rather than to just discard the part .

@Pendrige 3 года назад

Finally some more HVACR knowledge im never gonna use but somehow very much enjoy learning.

@BreakingYTown 3 года назад

^this

@defresurrection 3 года назад

Totally agree, me also.

@Mark_C1 3 года назад

Yup

@dakotareid1566 3 года назад

Yep 😂

@ItzjoshyVQ_37 3 года назад

You never know maybe it will be useful one day

@leifwinter9666 3 года назад

"It arced somewhere, I don't know where." Me looking at that ball of electrical tape: "Hmm, I wonder"

@oakey1978 3 года назад

Hello from Australia. Confession straight up, I am not an electrician, fridge tech. or anything like that. I have only a very basic understanding about all of this, however, I have no problem understanding what is going on. This is what is great about all of your videos, you explain everything really well and you are totally honest not only to your customers but also us, your viewers. Keep up the great work.

@gavincarstens6497 3 года назад

Fellow ozzy with the save non feild. :) but love Chris's vids

@EricK-ig4ko 3 года назад

Chris should open a HVACR school. His teaching is top notch!

@josephsantos7047 3 года назад

You’re the best thing since sliced bread during this quarantine.

@letterslayer7814 3 года назад

is sliced bread *really* that good though

@curlyvisuals5398 3 года назад

@@letterslayer7814 yes

@josephsantos7047 3 года назад

sliced bread makes me happy

@hvacdr 3 года назад

Quarantine? What's that? I work 45 hours a week all year

@lobehold2263 3 года назад

Probably cooked up letting time slip him by.

@BlakDrgn 3 года назад

wow. XPO Freight and it arrived in one piece? A MIRACLE!

@philllsxga.7737 3 года назад

Great video! The small amount of service I have done over the years I can't believe The butchery I see in rooftops, furnaces and air makeup units you are a very thorough HVAC mechanic!! We need more guy's like you that actually take pride in their work..

@maloillest 3 года назад

The first time i felt with a greasy af exhaust hood the restaurant didn’t ever clean it since it opened. It was opened for about 2 1/2 years. The thing was vibrating the roof so bad the employees and management was hearing it from inside the restaurant. Well we ended up removing the blower wheel and i tried to clean it with cleaners at the car wash and that was no bueno! So my bosses brother was like let’s bbq that thing. So we took it to his yard and lit it on fire the grease came off fairly easy after that. He suggested that his brother keep a oven or something to bake off grease like that in the future.

@uxwbill 3 года назад

I would pay to see you take the van up on the roof. That old motor starter did well. I think the new one will have a hard time meeting that kind of longevity.

@909tylor 3 года назад

@@2dfx agreed

@TheLOD2010 3 года назад

I love it, when you do a teardown of failing equipment!

@wildgingerhunter4441 3 года назад

12:19 I hear time to take the Van up on the roof lol , I know that’s not what he said but god that was funny to me .

@The98deville 3 года назад

Heard the same thing

@johnd4348 3 года назад

It feels like you take the van on the roof by the amount of crap you have to carry up there in the way of tools.

@dehaagy9665 3 года назад

The oily and fat pollution in the air duct can cause a fire problem, in Germany the law forces comercial kitchen to clean it every year. The design of the air vent collects rain, that looks strange to me! I like your way to solve problems!

@joes942 3 года назад

5:43. Currently feel that exact way.. They just seem so ominous!! Nailed it 😂

@HVACRVIDEOS 3 года назад

I will discuss this on my livestream this evening 11/9/20 @ 5:PM (pacific) come check it out and if you can’t make the live show it will post as a normal video afterwards. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-67kxagSrC6E.html

@benkeysor7576 3 года назад

I actually took a HVAC/R course back in 2013-14 & pretty much learned the basics and a little more but was never able to actually get a job doing so due to various reasons, mostly health related. However not too long ago one of your videos popped up, where you had a R-290 unit and that caught my interest & after that i was hooked... LOL. I've now been binge watching your videos for about a week & after watching the overtime video with Clive (Bigclivedotcom & Bigclivelive) who I've been watching for probably 2 years or so I decided to check out CuriousHVACguy's channel & binge watching him too. If anyone isn't familiar with Big Clive or Curious HVAC Guy you should check out their channels because you just may like them.

@leifwinter9666 3 года назад

If you think about it, being an HVAC person is great cause you learn how to do wiring and electrical, you learn how to do plumbing, and you have a great eye for finding problems

@dirtysecrets19 3 года назад

I’m truck driver and I like watching these videos. U should let those customers know they need to change those relay.

@javaguru7141 3 года назад

Awesome fault finding. I think you could save time on diagnoses like these with a pocket scope to see the voltage on startup to identify excessive voltage sag which would quickly identify problems with power delivery. Combine with a second waveform from a current clamp and you've got good data to quickly determine if the motor is bad.

@ke6gwf 3 года назад

Those beautiful old Allen Bradley style contactors are so beautiful! If you have the spare parts, they have unlimited life span, and anything can be repaired in 2 minutes. Modular so you can build the style you need, and many parts are interchangeable between nearby models to reduce your spare part requirements. They really shine in heavy industrial applications, and are pretty much bullet proof in dirty environments. I cut my teeth on industrial control systems built with those. I also like the European style, the DIN format, clean and much more compact, usually easier to wire, and designed with less exposed pixies (worse shock I ever got was 480v three phase across the knuckles when my thumb slipped off the reset button on a LARGE Allen Bradley overload just like this old one but scaled up, and I punched the output terminals... Lol) , and often also have better condition indicators and sometimes adjustable trip settings. I guess the difference is whether it is going to be maintained, or run till failure. In a Plant or factory environment where you have maintenance staff on hand with spare parts on the shelf, so they can dress the contacts periodically and swap a coil out if they hear it getting noisy, then the rebuildable one is a no brainer. But for a fix and forget application like this, there is little benefit to it, so putting the Euro style makes sense. And back in the 80s and 90s, the euro style wasn't really available in the US. I remember in the 90s getting some machines with the euro style control panels, and loving it, but getting replacement was tough and expensive lol

@stephenhunter70 3 года назад

I think they like the quality of the service you provide. There has to be companies who provide the same service who are closer to their site.

@stephenhunter70 3 года назад

Part of it may be that you never take what you understand to be the clients usual choice for granted and always fully brief him and give him the option.

@gavincarstens6497 3 года назад

Ohh for sure thats part of it. But a 2h 30m drive with light traffic just to get there would be very far out of his range

@ntsecrets 3 года назад

That teardown at the end is going to give bigclive a run for his money lol

@demonknight7965 3 года назад

interesting that the coil was still working. Testament to the way things were built back then.

@quietone610 3 года назад

That buzz is a sign that the coil was straining against the return spring--about to lose strength.

@newjerseybill3521 3 года назад

It would be interesting to see if the replacement European style starter is still around in 30+ years.

@xX_Kryptis_Xx 3 года назад

Old stuff just works better. Now days if you get 3 years out of a common household box/stand fan your lucky..

@throttlebottle5906 3 года назад

@@newjerseybill3521 good joke sir :))

@GB-ue6wr 3 года назад

The building I work in was built in the 80s and is full of those Furnace motor starts - nice job on the change out! Keep up the great work..👍

@dantowns7546 3 года назад

Chris great video as always that color coding in that starter panel would have drove me crazy I'm not a tech or an electrician but I understand that color coding is very important keep the great stuff coming when I was in high school in the 80s I worked with a HVAC Tech at a college campus and there's Old School contactors there always got me "BANG!" "CLICK!" No soft starting no VFD we are talking about 20 -40 hp air handling units starting 480 v across the line

@AmericanLocomotive1 3 года назад

FYI, it's pretty common in the controls industry to use all red wires for 120 VAC "control" voltage. Especially since controls like that are often powered by a dedicated isolated 120v transformer somewhere, which will not have a neutral leg.

@PWN_Nation 3 года назад

Two recommendations: 1) Would love to have a roll-up at the end of each job, with some ballpark itemized costs for that job (2ea contactors, 1ea replacement fan motor, 6hr labor = $xxxx.xx). 2) It would be great to have you recommend some user maintenance items with a recommendation for intervals that may help prolong equipment life and/negate the need to call you for an emergency response.

@Abhishek-C92 3 года назад

he is genuine, and wish i can meet chris in person.

@ke6gwf 3 года назад

Just open a restaurant chain in the Riverside area and don't do PM on your equipment.. Lol

@throttlebottle5906 3 года назад

used to just replace failed overload heaters after fixing the motor issue or contactor if it failed, now you have to replace the whole overload and most everyone changes the contactor at the same time. the adjustable over current is nice though, no stocking and ordering specific heaters!

@Petertronic 3 года назад

I like your methodical fault tracing, and the bonus teardown too. Great job as ever.

@matthewbeddow3278 3 года назад

Thanks for the video they are always great to watch and the summing up at the end is top-notch.

@gaunerchen1729 3 года назад

From my experience, it was very likely just the bad overload relay. Over the time they become too sensitive (weakening of the materials) and start false tripping. I had to change a few of them ( some of them more than 40 years old) just because of that.

@gbuss814 3 года назад

It's awesome you take the time to take things apart. You can learn so much. I need to start doing that. Great video!

@kar120cfanatic 3 года назад

Great video once again. Nice, neat re-wiring for you or the next tech makes it easier to spot trouble. Thermal imaging camera helps to eliminate causes. Your customers are certainly getting their money's worth on repairs. Using a logical trouble-shooting path, knowing your tools and the quirks of the particular equipment you are working on makes for a solid repair. Well Done!

@fidelalgarin3376 3 года назад

Would have been interesting to tear down the motor too. I have run into intermittent motors which ran fine for days and even weeks, then acted up and tripped starters or blew fuses. Specially condenser fan motors on AAON RTU's, blowing out expensive ATQ fuses. Used a proper rating breaker with female connectors in place of the fuse for troubleshooting.

@metrotechguru5863 3 года назад

I don't see any idiots here. Just a rock star. Good work.

@68vmoore 3 года назад

Very good content. I have hvac experience with my job offshore. Watching your shows are great training. Keep it up

@Ted_E_Bear 3 года назад

Thanks for the information !!

@MrBigrich722 3 года назад

The hoist trick we use is remove the handle and attach cordless drill to the shaft.... slowly raise and lower

@RayRay-nb7tn 3 года назад

Great video of an exhaust fan. Look like an easy switch for the fan, but not for finding the problem. Those motor starters are always a problem to diagnose I felt. Why not just put a Greenheck exhaust fan in like the others. Curb would've fit then they would have all alike fans? Well they order what they want you just supply basically labor. Hope to see the beanies next week. Will be ordering 2 of them plus 2 hoodies when they come out. Thank you for videos and your excellent experience knowledge. Be good bud.

@chrismichelson1757 2 года назад

Keep up the great work do enjoy watching all of your videos. I’ve love learn new things.

@mayw6326 3 года назад

Thank you for a good teardown

@EgonFreeman 3 года назад

@3:00 -- here's a hint - you can tie all legs together and test to ground in one go. I mean, it doesn't technically matter which leg has a short, does it? At that point I'd want to see if it's the motor or the wiring, but again -- can test wholesale, and only split into the 1-2-3 phase when you have to (the final leg of the installation).

@jamesh6229 3 года назад

thanks for the video That is amazing that exhaust fan lasted so long.

@awsomevideoperson 3 года назад

Nobody is commenting on how remarkably clean that hood is!

@westroadelectric5444 3 года назад

Chris. We alway break the neutral with the overload and use power with the control. Thanks for another great video.

@donnierobertson3088 3 года назад

Great job and video like always

@gregbowman3598 3 года назад

Good one Chris 👍

@sebastiannielsen 3 года назад

Since that coil in that one was starting to disintegrate - propably due to air humidity and corrosion, I would suggest replacing the 2 last ones in that panel too. They will propably fail soon too. Preventantive maintenace you know.

@nsaglian 3 года назад

Nice tear-down of the motor starter!

@WilliamHaggerty 3 года назад

It really isn't new vs old starter tech, they are 2 different standards. The big ugly one is a NEMA starter, the streamlined one is IEC standard.

@natepeterson7145 3 года назад

Another quality video by Hvacr videos!

@W-N-T 3 года назад

Great video. 👍

@timeimp 3 года назад

So this guy is why Maccas is always so cool. Nice!

@inothome 3 года назад

FYI, once you verify winding resistance you only need to check one lead to ground to check for a short to ground with most motors you'll come across. In this instance if you had a short to ground on another lead than the one you were checking you would have read the 3.5 Ohms, if a good short to ground. But since the windings are low resistance anyway, any path to ground on any winding / lead will show up on all leads. Of course if you break all the leads apart or have a Wye - delta start motor, this doesn't apply. But just a quick tip to save you 30 seconds.....

@tonyvolbeda952 3 года назад

I finally had enough and added my on leads to get it to the same point of the other motor wires

@marioduenas1769 3 года назад

Love the in depth commentary. Keep up the good work. Watching your videos encouraged me to enroll in HVAC school. I start at the end of November 😁

@benkeysor7576 3 года назад

Just remember you won't learn everything but you will learn a lot of stuff to help you understand the basics. Also you will definitely want to invest in a good quality multimeter, you'll probably be required to purchase one that has a temperature sensor in it and get yourself a decent set of manifold gauges because the ones the school has are probably going to be a little old and worn out.

@marioduenas1769 3 года назад

Thanks for that advice. I’ll start saving lol

@purechakra1 3 года назад

Keep the exhaust fan videos coming

@NerdofNorthStar 3 года назад

I get the corporate’s want to have you check it out even out of your normal range. I have a guy from Florida come to Iowa once a year to do a PMA on my planetarium.

@htroberts 3 года назад

I think we need to see a video of your planetarium...

@pppp4604 3 года назад

Eloquent, humbled, and a professional. As always God bless you Christ for being unselfish and share a wealth of Knowledge with those who enjoy and appreciate this trade. Thank you.

@letterslayer7814 3 года назад

8:16 sounds like some kind of scifi spaceship engine starting up

@Samthe17 3 года назад

Lmao I love when they make the sound I think it sounds like a robot powering on

@staterafukumoto 3 года назад

6:12 the gloves said "aight i'm 'boutta head out"

@Coffreek 3 года назад

Green wire on the line side. Nice.

@williamlee6358 3 года назад

Cool thanks

@Eddy63 3 года назад

Another good one Chris ...

@jamest5750 3 года назад

Your awesome keep up the great work

@scotthewitt6047 3 года назад

I'm surprised a restaurant in these times would do this now unless this is a fast food restaurant.

@alexanderwilkins222 3 года назад

Judging by the amount of grease up at the roof and some of the ambient noise while he was inside says yes it was.

@jordanbryant4022 3 года назад

" I can hear crispiness inside that fan." LOL

@gerarddasilva9535 3 года назад

Nice 👍🏻 job.

@koitk 3 года назад

You might want to think about puchasing a label printer. I bought a Dymo Rhino 4200, it has cheap labels in china and it can also print on heatshrink tubes. Makes neat job about them wiring jobs.

@malcolmmackenzie9202 3 года назад

Love your videos

@CyberlightFG 3 года назад

If the core is rusty, it doesn't make proper magnetic contact. You could clean it, but it's better to replace it. Too old to maintain it.

@jefferygrady3181 3 года назад

If you are working for a chain travel time shouldn't matter if you're being paid for that ! Good if you are doing all their work because then you can expand your company with the dedicated work and make more money! Good job installing that fan! You can add mechanical to your company name now!

@justinmccowan2543 3 года назад

That fan is an oldie!

@dimwittflathead639 3 года назад

Just a FYI, the little round pads on the actual contacts is pure silver. Do not throw away.

@BlakDrgn 3 года назад

send em to sreetips here on youtube

@gavincarstens6497 3 года назад

Or platinum

@wiiyaasiniini5323 3 года назад

It just goes to show you how they really don't make them like they used to. In my experience, todays HVAC products have a 5-10 year lifespan. But you had your old clunky motor starter from 40 years ago still chugging along. I used to repair a lot of PTACs. The 30 year old ones you could replace a component and it would go another ten years. The newer ones? You could almost count on whatever part being covered by the manufacturers warranty (5 year).

@ehsnils 3 года назад

Wire colors shall definitely be according to what the code says to avoid unnecessary confusion. Around here in Sweden it's Yellow/Green for ground, blue for neutral and then brown, black and grey for the phases. Single phase hot shall be brown. This is the European standard. Could be good to know if you for some reason encounter an European-assembled unit. So watch out for confusion between blue and grey wires, could be an European wiring and then they are swapped. Seems like Australia also uses blue for neutral and white for phase. So never assume that the wiring colors are according to your local code on pre-assembled units because you never know where it was assembled and what the person doing the wiring assumed. The movie quote "assumption is the mother of all..." (left out the last to keep it family friendly)

@stueyknuxx 3 года назад

Australia use Blue,White,Red for phase, black for neutral and yellow and green for earth

@quietone610 3 года назад

The motor is supposed to have a little placard in that terminal / wire box to dictate how to attach each voltage, high/low speed.

@demonknight7965 3 года назад

@@quietone610 Key word there Supposed to. lol reality original installer.took it and threw it away lol

@alexku8452 3 года назад

Greetings from Germany ;) As mentioned color codes are EU harmonized and as such gladly the same all over Europe these days. Althoug In older houses I have run into very old wires (white, red and grey) before. After that age especially a lot of fun trying to differenciate between white and grey. And to be honest I run into those once and already forgot again what those colors have been. Beeing used to our color code seeing a blue wire used for a phase made me crinch at first. (Yes, I know, according to codes in other location, California/USA in this case, I am very well aware that this is completely fine! Just not beeing used to it makes you cringe first as first thing you learn here is that ground only is allowed to be ground. Next after that comes, don´t ever use the neutral wire for anything else... which in our case is the blue one) I can also only support to never assume anything with wiring. In cases of SPDT switches I found the blue neutral wire (illegaly) abused so many times to connect between the switches. And also you may not know what kind of hack job was done before or what kind of defect may cause wires to be energized. Which leads to a second good thing to do to do every time. Never assume the power you just switched off is realy off. Always take your time to check for voltage first. Had my own experience with that when reqiring a kitchen years ago. switched of the breaker, checked the first set of outlets, cut the wire, checked the second outlet, cut the wire, assumed power is of as all those should have been on one breaker and just cut the wire on the third set. Well, got a nice new notch blown in my pliers. Turned out someone added those outlets later and in a way that made absolutely no sense pulled a cable over from the living room (on a different breaker) instead of one of the other outlets. And by pulling a cable the way houses are built here I mean chisseled a slot through all the masonry to get the cable over from about 5 meters away instead of a direct line of about a meter...

@alexku8452 3 года назад

Oh by the way, does anyone know a good and reliable source of wire color codes in comparison? I once had to reqire a whole electrical cabinet that came with a machine imported from the us. Not only had we to redo those parts that had to be adapted for the correct voltage and frequency, but also we had to make it compliant to the color code, before it was aloowed to be put into operation. Just in case anyone who not knew it was an import had to work on it.

@DanBurgaud 3 года назад

14:00 I like the forensic part of your video. Have you tried Solid State contactors? If so, how are they compared with regular electro-mechanical one?

@elijahtalbot5288 3 года назад

Nice video

@treverkirk8110 3 года назад

I know you said you're aware you can rebuild them, but to fix that buzzing noise it usually just entails dissassembling the contactor and cleaning the two mating surfaces for the shading poles. Of course there can be more to it though.

@huxleywolfkin1202 3 года назад

6:13 gloves said peace out

@sparkydave2783 3 года назад

My guess would be a small part of that contactor coil former or a stray lamination caused the contactor to not cleanly pull in now and then thus causing current imbalance and tripping.

@burningdust 3 года назад

You could see visible discolouration on the line terminals as well as the heat coils. It had definitely been in a high current /high heat state prior.

@s07StickEmpires 3 года назад

That was the loudest motor starter I ever heard.

@falloutguy8878 3 года назад

Nice job Chris nice video? Your the best

@HVACRVIDEOS 3 года назад

Thanks for watching!! I will be going live on RU-vid this evening 11/9/20 @ 5:PM (pacific) to discuss my most recent uploads and answer questions from emails, RU-vid comments and the live chat, come check it out ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-67kxagSrC6E.html

@rustblade5021 3 года назад

looks like a powdered iron core, the epoxy binder breaks down from excessive heat

@damonabets3779 3 года назад

Hey Chris great video! I was wondering the next time you replace the a fan motor can you take it apart and see what happened to it that would be interesting! Keep up the great work Damon!

@etherealrose2139 3 года назад

There was nothing wrong with that motor. That contactor was trash. It was failing intermittently which is why the voltage measured fine for him. That rattle sounded like an uneven startup and caused that fan spindle to vibrate. Probably voltage drop across one of the three windings.

@maximumnoise78 2 года назад

The beeping indoors sounded like a mcdonalds store

@ninamcclure2193 3 года назад

I want to know a/c voltage and for some reason it's just not coming to me like I thought it would. I've been working on cars since I could drive and I know DC like the back of my hand but I just have a hell of a time with ac. Maybe it's all the colors. I just don't want to go back to school just to learn ac, I was hoping it would hit me a lot faster. Got the core principle down probably just need some experience. Great video guy.

@glynwatkins9968 3 года назад

did u fix the dodgy switch on the outside of the hvac on the roof?

@fditty276 3 года назад

I've seen things that would make your skin crawl workin in restaurants

@watsisbuttndo829 3 года назад

Watching these repair vids makes it hard to want to go out to eat. I have definately stopped having any ice in my drinks!.

@seanthiar 3 года назад

I'm a learned electrician and nearly every time I see that electric connections in the units I get a head->table moment. You shouldn't see any noninsulated outside the connection-area. It's a possible short. Just a screw or any else falling on that area will shorten everything. The plastic brackets on the connections are there that you can not touch the connections by accident. If somebody removes the insulation of the cable that you have a blank cable outside that bracketed area, the safety of the bracket against touching is removed. At 12:32 the white motor starter is ok, but in the middle start the problems. The first connection with the one green wire is ok, but the next connection the two greens are bad (red is ok) and the other connections are bad and got much blank area. Same on the bottom connections. You don't remove more insulation than necessary for a connection. No insulation in the connector. That's bad, too. And no blank cable outside the connector. Best for getting the right length is an automatic cable stripper. It got a scale or a limit stop to be sure you strip the right length of the cable. And never remove insulation with a knife. For the outer insulation of installation cables exist special cable stripper and for wires in the cables use the automatic stripper. You'll maybe damage the inner cables insulation without that or with single wire like in the unit you'll maybe damage the wire itself and out of it reduce the diameter of the wire and that means it can take less current. And the damaged area is a possible point where it can break. Same for flexible wires where you'll maybe accidently cut some of the strands.

@pennsylvaniahvacproduction6658 3 года назад

hi hvacr videos how are you?

@stevenhughes6548 3 года назад

Central blower which literaly is the same unit. Central blower is in industry. They used to be in partnership with the other company after the split they still make the same fan.

@kittyztigerz 3 года назад

80s old electric parts they do become failures after 5 to 10 years but i surprise this one last 30 years n was becoming to failures sooner or later if was me i would throw out old electric stuff because never know if blew out or cause more problems down load

@EETechs 3 года назад

The smaller contactor is IEC standard, it's not new technology. The older one is NEMA standard, which I find superior to IEC because they are oversized and can take overloads much better than IEC can.

@Z555JR 2 года назад

What flir Infrared camera do you have

@grahamosborn6110 3 года назад

Do you ever recover the silver from the contacts. As they are about 90% silver

@wdavem 3 года назад

Do you think the motor windings could have a few shorted turns? Equipment autopsies are very interesting. (I'm not an HVAC tech.)

@derick441 3 года назад

I use to clean those nasty bk broiler exhausts. Man they use to get trashed bad.

@rigger8609 3 года назад

do you save all the copper from the parts you replace????

@liviu2004 3 года назад

When you set that thermal relay to 5.6A, it will allow you 10% over for unlimited time. For info only. Very strange electrical design, is the circuit breaker at the end of the circuit, thus on the roof? Nothing before the contactor, how is this possible and why is not seen as a fire risk?

@sebastiannielsen 3 года назад

There is a breaker before the contactor (that was what he turned off when he worked on the circuit) but just in another panel. The thing on the roof is a safety disconnect switch, used to turn off power to work on the thing. By having the safety switch as close as possible, you avoid the lockout/tagout paperwork if the disconnect switch is in direct sight of the workman as opposed to breaking the power at the breaker panel.