THEY HAVE SAND IN PLACES IT SHOULDN'T BE IN

This was a long one but the problems kept coming, as always I try my best to give the customer the best value for their buck.
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00:00 SPONSOR CARD
00:06 VIDEO START
02:00 POWER VERIFICATION
02:45 FOUND A SYMPTOM
04:52 HMM I WONDER IF THE SAND HAD SOMETHING TO DO WITH OUR PROBLEM
08:14 HMM MORE SAND
11:17 AIR HANDLER INSPECTION
11:45 YOU GOTTA BE SMARTER THAN THE AVERAGE BEAR
12:25 FOUND ANOTHER SYMPTOM
14:27 WTF MOMENT
16:16 ALWAYS THINK ABOUT THE NEXT GUY
19:53 ONCE YOU SMELL IT YOU WILL NEVER FORGET IT
22:02 I'M BACK
22:50 EVACUATION TIME
25:06 THINGS DON'T ALWAYS GO AS PLANNED
27:07 COMPRESSOR OIL CHECK
28:51 BRAZING MONTAGE
32:41 SHE'S A DIRTY GIRL
40:36 AUTOPSY TIME
45:00 CLOSING WORDS

[@FrNMGuy]

Almost an hour long video? YES! My baby boy was cheering while you were brazing. Hopefully, if he wants to go into the trades, he will continue to have that enjoyment. Good work, Chris!

[@craigmills6275]

Hopefully if he goes into the trades his first boss isn’t a scam artist or straight a hole.

[@lezlienewlands1337]

Very much a "Compressors don't just die, they're murdered" situation imo. One bit of sand or a bad connection in the contactor and suddenly the compressor isn't getting the power it wants and it's not going to be happy. Contactor changeout as a preventative measure is just doing right by your customers. 👍 Watching from Australia, this stuff's fascinating. Made it to the end 😃.

[@thesoniczone]

Sand in contacts is a real problem. I have had this problem on light switches before, due to renovations happening at the same time the switches were being installed. Lesson learnt.

[@novaorbitdragon]

"Pocket sand!" - Dale Gribble

[@anthonybeliveau3158]

What's up , new hvac tech here ( 2 years ) , love your videos man !!! I'm gonna watch em' all for sure , keep going

[@stradcar1]

Wow i said I would not touch a/c s but I got a call one day from a place that uses 13 of these 3 compressor types units. The hvac guy says power problem. Turns out the condenser fan relay burnt. I fix it but this the only person that explains this stuff so well. A million tanx bro

[@duffman1010]

Loved the 80's/90's Sitcom music while Brazing LOL

[@gmcxm211]

This is insane, the condition this equipment or people operate in. I live in Wyoming, We "might" have temps in the 90's 3 weeks out of the year. AC might run 3 months or 4 months out of the year. But our furnaces run 9 months out of the year. Really like you channel. Ted Cook "anti DIY HVAC gave you a shout out. You're really knowledgeable of your trade. Great workmanship and ethics. Until watching your channel, didn't realize how many of us take the contacts for granted.

[@hrvstmn31]

Really digging the 80's montage music, it's like I'm learning how to type in 6th grade off a laserdisc all over again.

[@ianbradford4321]

I’ve been watching for about a year and a half. My friend/coworker that I respect and go to for guidance recommended you. I have recommended the videos to multiple co workers as well. I have learned a great deal, I had 20ish years in residential before coming to commercial.

[@Goldstacker1972-kp2bh]

Always change your contactor on 3 phase unit when you change the compressor.

[@gsperanza07]

Anyone who tells you Chris , that changing contactors is an over waste , THERE DEFINITELY GOT NO IDEA AND HAVE NO PLACE IN THIS TRADE !!!!!! I’ve seen the first hand experience of low voltage and no low voltage issues, especially miss diagnostic test , over looking. ‘ pitted ‘. Burn’t contactor points , working normally they will 100% wear out and I’ve personally changed soooo many , low voltage and uneven load and phase will definitely cause. ‘ Brown - out ‘ burnt outs to occur , and house keeping has saved my clients and myself to call outs a good 40% on cooling tower fan units and especially compressor prematurely failing . It’s the basic rookie test of finding back to basics of diagnosing and testing ,mostly over looked and like your self , finding why, because , it’s the most important instead of just r & r , your statement is beyond true and I’m sure many , many , many , repeat repairs by air - con techs have gone to the same repair , more than once or replaced a new compressor to only return weeks or days later with another fault that was over looked !!! Well done and once again thanks for posting Chris, safe travels 😊 and Godbless 😊 , and I’ve watched the video , from start to end !!!

[@robertogomez2297]

Just wanted to say you are a troubleshooting Master! I have learned so much from your videos and I very much enjoy watching through everything, always learn something new! I’m 3 years in to the hvac trade and barely started commercial a year ago and your videos have helped me so much with troubleshooting commercial equipment, thank you sir.

[@DJEZNICK]

The closing words are so important to follow in this trade, be a technician, not a parts changer, figure out why it failed. 👏

[@user-im8rm4wl4k]

It is my pleasure to watch a professional work.

[@willspeed4585]

The saxophone music. Perfect. 🤣

[@KoScosss]

1h video? What a treat. Thanks, yum-yum.

[@danielelise7348]

You're showing your age with these daggy 80's soundtracks Chris. 😆😆🔥❄️

[@jasonjohnsonHVAC]

This job like many jobs is about CYA ( cover your a** ). You perform "big picture diagnosis" to cover the customer, to cover yourself and your company. You provide solutions to all problems found and let the customer choose what they want to do....as Chris stated. It the best, professional and proper way to be a quality tech. The money isn't ours to spend. You handled that in every aspect like a true pro Chris......job well done......I'd hire you 😁😆😄

[@LMSILVIA]

I rebuild semi hermetic compressors for a living. Its clear when you turn the rotor on the table that shine on one side indicates the rotor was rubbing against the stator. That will cause a burn out eventually.

[@danpresson]

I watch from beginning to end its great when you take them apart you have all kinds of awards

[@chieft3357]

I miss some of your videos, so I'm playing catch up. I see the outside temp you work in and I feel your PAIN. I was a jet engine tech for the j-79 which was on the older C-130'S. There are many times in Arkansas summer when the temp on a wing can reach 105 to 120 deg. Believe it or not we had to wear coveralls and special gloves just to handle a prop or engine during a change and that can take between 6 and 8 hrs. Stay safe and don't go to long in the heat, it will bite you hard.

[@Loftis86]

This music reminds me of the Saved by the Bell , Full House and Family Matters days haha. Love it

[@kylemcelya5589]

Thank you so much for showing the testing to ground immediately. I never learned that until this video. 2 yrs into the trade and I learned more with your videos and other technicians videos. Please continue I'm now following you like a hawk!

[@MinecraftAedda]

Made it to the end, love listening to your job debriefings.

[@eddevoe2519]

I always change contactors with a compressor.

[@brendonnel6631]

No Idea how I ended up here but DAMN it was interesting, this dude knows his craft.

[@bartfoster1311]

That 5 ton should have a cover plate. They probably took it off for a better hand grip during install and never put it back in. We almost always install heat strips but I don't imagine you need them in so cal!

[@garousata4261]

Why do you need heat strips in the frist place? That thing is an heat pump right? ( Or at least it should be....

[@bartfoster1311]

@@garousata4261 it's for emergency heat and they are usually set to kick on when the temp is more than 3 degrees below what heat is set to. In the south it is only used when it gets really cold or if the condensing unit stops working.

[@digitalcircuit]

Made it to the end! I didn't even realize it was 58 minutes until halfway through - quite the journey. I appreciate your thoroughness and eye for preventative maintenance - contactors included. Thinking about future potential trouble helps in other fields, too - including software engineering, what I'm pursuing.

[@craigmills6275]

Love how Chris said he was going to “inspect” that contactor. He knows damn well for 100000% he isn’t leaving that roof without changing it lol. No reason not to change that contactor if the compressor burnt up. Did the windings go out or did one of the legs short to ground? There’s an idea for your next compressor trouble shooting videos Chris. Show people how you test resistance between windings and each leg to ground. I’m sure you’ve done it in many videos.

[@northparallel6913]

Recommend contactors to be installed inside closures to protect from sand damage. You can still service them

[@rhinohino]

I'm not an HVACR tech. But I'm an electro mechanical tech and like the electrical troubleshooting you do well. Keep up the great work!

[@jimfiedlerRR-546]

Keep up the good work I think you got the best hvac channel on KZbin. You do a great job explaining your thought, & execution process on things. I am a residential/ commercial tech that's disabled with multiple sclerosis. I really loved the trade, & videos like yours still makes me feel apart of the trade still.

[@user-zm8ps7em5d]

I absolutely appreciate the time you take to be thorough on your jobs. I started watching your channel about 2yrs ago already- and recently I was able to land a position with a Commercial HVACR business- but I've learned so much just by watching your trouble shooting methods but also, I'm beginning to understand the mentality of "take the extra 15mins to check on something or to do a task", which prevents so many issues down the road. I'm from Central Texas and the work I come to find is simply laziness. Love the videos, you're thinking and attitude, stay cool and be safe!

[@ericmichaud3331]

You do amazing videos!! I always look forward to watching them. Learned a bunch of content from you. Watched the entire video from the beginning!! Be safe

[@ickipoo]

Jeez, that burned wiring on the first unit is bad. They're very lucky they still have a business and not just an insurance claim.

[@stefanpariyski3709]

I appreciate the brazing montages and the effort put into it with the music and everything, really love watching them!

[@KurtM558]

I had a great time taking apart our 34 hp recip low stage compressor after we oil slugged it. It was a great learning experience.

[@chaosminecraft3399]

Hi, it's awesome the work you do, I'm really happy to hear that the restaurant is getting properly cooled.

[@SpazyFunk]

Instead of replacing all the contactors every PM you can sell them ICM450 phase monitors. This will prevent phase imbalance and low voltage problems. it will save the compressors.

[@gabiold]

I just diagnosed a compressor short in a household portable dehumidifier. They used in in an industrial setting with fine dust and never cleaned the stuff out, the whole thing was full. So it was an overheating issue. The thermal switch probably saved it a hundred times already, but it eventually welded shut and failed to protect the last time. Probably. All I want to say is, there is all that electronics control, why no self-diagnostic for overheat too? When there are overheat events, possibly with increasing frequency, then after the n-th one, shut the system dowm with an error code as an early warning. There is no use of that auto-resetting thermal switch, if no one is getting notified that it is happening. Just as an example that similar thing already exists: in safety-critical industrial systems, a lot of stuff, for example contactors, sensors, etc are duplicated, in case if one fails the other will still do the job. BUT! If there would be no notfication about it, then the system would become as unsafe as with just one contactor or sensor or anything. For this exact reason, the system (safety relays) monitor everything that is duplicated, and when the paired things does not match state, it always disables the system (into a known good, safe state) and/or notify staff about the degraded safety, depending on how critical is to keep operating.

[@peterhodgkins6985]

Seems to me that changing contactors to sealed EP type (e.g. Class I Div 1/2) would be more cost effective than routine replacements. Just a thought! Another great video, Chris!

[@HVACRVIDEOS]

I will discuss this on my livestream this evening 7/25/22 @ 5:PM (pacific) on KZbin come over and check it out… or not kzbin.info/www/bejne/a3m2YXSdasuHm9U

[@thesoniczone]

Contactors are a fraction of the cost of a new compressor. Hence I am with Chris on this one. I will do the same if I was in this position, and indeed when I used to design stuff like this I recommended to the installers that they do the same, to avoid myself having been called out to answer for product failure and it has saved me from at least two lawsuits.

[@GigglyWolf90]

As much as I watch these videos, the more I admire who do this job. Stuff is way more complicated than I ever could have imagined

[@r3tr0nic]

Great teardown and analysis of the compressor failure. I do agree, I believe the blowing sand seems the root cause of the contactor failure and thus, compressor failure. My thoughts: Contactor contacts are accessible to the enviromentals, so sand contaminated them. Because the 3rd stage is used less then the 2nd and 1st stage, the contacts in the 3rd stage contactor remain open overall longer, and had more time to have sand/dirt build up. One or more phases may have become open, or a resistance developed in the contacts of the contactor and resulted in a low voltage condition. Eventually the overload in the compressor will have cut. Once the overload reset, and stage 3 call initiates, the process repeated with each time degrading the overload and windings. Eventually the overload may have failed stuck on or shorted, causing the compressor winding to heat up until the winding varnish failed and a short to ground developed and tripped the breaker. Perhaps the winding varnish failed first. Thats my educated guess. The contactor is def the Achilles heel. Makes me ponder how great it would be to have something monitoring the 3 phase power to the compressor itself, in addition to the normal protections. Such microprocessor powered monitoring could disable the stage much faster, throw an error code and alert for service call. Perhaps such already exists (I never messed with large systems like that). Your maint PM plan on regularly changing the contactors is a great idea. That is much less expensive then a catastrophic failure and extended unexpected down time vs a lesser planned down time.

[@Fluxy333]

I’m going to tech school next year and I chose hvac as one of my trades and I honestly am so excited to learn about this stuff, your videos teach me a lot!

[@HVACRVIDEOS]

Awesome bud, I’m going live on KZbin this evening 7/25/22 @ 5:PM (pacific) to answer questions from the live chat, emails and KZbin comments, come over and check it out…or not kzbin.info/www/bejne/a3m2YXSdasuHm9U

[@AIM54A]

Solid State contractors where made for this situation. No moving parts, totally sealed. Sand will never effect them.

[@HVACRVIDEOS]

I will discuss this on my livestream this evening 7/25/22 @ 5:PM (pacific) on KZbin come over and check it out… or not kzbin.info/www/bejne/a3m2YXSdasuHm9U

[@pashok28]

You can't help those Americans and their regulations. It boggles mind how they live in cardboard houses with wire nuts ancient wiring.

[@pineychristian]

Chris, Awesome video and diagnosis. I like how your approach is very carefully planned and cautious. I have a story on a 40ton McQuay RTU. The unit had two circuits with 4 stages of cooling. 1st stage compressor had one blown fuse feeding compressor contactor. Checked all basics before checking compressor. Compressor checked out ( electrically) using Copeland mobile app , ohms were good in spec and no shorts to ground. Very handy app. So at this point I decided nothing left to do but to put fuse in and check under power. WELL.... the compressor had a mechanical problem and broke. Blew compressor terminal plug out like it was hit with a shotgun buckshot with a massive arch of quick flash fire. It immediately went out. Blew the refrigerant charge out. Thank God I was like 8ft back away from unit when it came on. I immediately killed the disconnect and went off the roof to change my underwear..... scary stuff. I found out later the TXV was completely plugged and bad. It was banging off high pressure control and would reset later to continue to do it again. Always use caution and be careful cause usually there is a reason something broke.....

[@pacificairsystems9683]

You’re the most awesomeness HVAC guy in America

[@TheNemosdaddy]

How's that boot taste?

[@Anver_Silyaev]

Probably 3rd stage contactor damaged because of it works less and contacts are open most part of time, sand settles between contacts. Meanwhile 1st & 2nd stage contacts are closed and not so damaged. IMHO. Cool work and investigation 🔎!

[@clake8964]

Great video, very entertaining! This case specifically makes me wonder why the manufacturers of these AC units don't put a dustproof, well insulated box for the contactors to be in. The failure rate could go down drastically, as well as repair costs (especially in this case). What I mean is that it could lower the rate of catastrophical failure, like this one where it possibly single-phased the compressor, destroying it, not regular failure, like for example a compressor wearing out over time naturally. This applies to defrost clocks as well. Delicate parts are exposed to the outside influences when they can be very simply protected from them. Just a thought, feel free to correct me if there is a reason it's not done this way, maybe it's not up to code or something, idk. :D Have a wonderful day everyone!

[@cliffordsilveria4928]

Thank you Nice job explaining things and showing the inside of the compressor really helps.

[@gregmercil3968]

I work and live in the high desert, and that sand is no joke. A couple months ago I did a spring PM on a residential AC. I removed a Home Depot bucket’s worth of sand out of the condensing unit and then some. I make a point of getting all the dirt and sand out of condensing units before hosing down the coil, otherwise it will turn into a huge muddy mess and becomes a time consuming headache. I learned this the hard way last summer. I’ve also been making a point lately to take apart fan motors that I’ve replaced to see what went wrong in them when I have the time for it, for a learning experience and out of shear curiosity. I had one blower motor that I could hear arcing in the attic while I was at the Tstat, just before it tripped the breaker. Took that one apart, it appeared that the bearings failed and caused the rotor to make contact with the stator. The windings were a blackened charred mess as well.

[@albertoldschool6950]

Maybe Try sealing contactor so sand can't get in. Do Quality work tighten wires to spec. reduce contact resistance and overheating. Replacing cover and panels to prevent Sun UV deterioration and sand infiltration. These thing may help. All the best to you. Thanks for the video.

[@adventurefishingscotland3918]

Yet another great video. Been busy over in the uk aparently our ac units cant handle a bit heat

[@renetrevino9829]

Hey bud thank you for taking the time to make these videos. Your approach to trouble shooting the best I’ve ever seen and very educational

[@TheNemosdaddy]

"I'm gonna try to one hand this" lmfao. That's what she said.

[@stellviahohenheim]

Lemao that c***

[@lastin1out1]

Saw belt deflection being tested. Wanted to share: the other day, someone taught me a formula for belt tension. 1/64 per inch on belt for deflection. So an example: an ax-64 belt should have 1 inch of deflection. An ax-32 belt should have 1/2" deflection... And so on. Hope it helps someone...

[@benjaminbortz5362]

Always love your vids always keep Me sharp and on game whenever im working or air conditioning I’ve done learned a lot from your vids made me definitely a better at all this stuff keeps me motivated and just want to show appreciation for your vids because i do Understand that it takes time for you do so I understand everything you say in your vids super educated and clearly knowledgeable about refrigeration and air conditioning and some other interesting things I’ve seen yah done there but yeah you show me a-lot in just a video it’s amazing to me always waiting for the next one can’t wait to Start my own videos but yeah much respect and love man

[@dragonrider4253]

I love your big picture thing. Get in there and LOOK for problems or potential problems and bring it up to the customer. A nearly hour long video and I watched it all. I love your work.

[@imark7777777]

It's the simple things like finding out there's an air duct right next to where you need to work that make it an awesome day. I wonder if the insulation on the windings just broke down from the heat?

[@davidmorton5137]

thank you for your videos. one of the reasons i watch them (aside from pure learning, which there is alot of) is at the end you sometimes you dismantle the components, in this case a compressor and contactor. you then explain how they work, and give excellent insight as to why they failed. i appreciate all you do to help educate myself and all the other folks who pursue this never ending industry of woes.

[@Jilocasindragon]

Thank you so much for making all those videos, the autopsy and and the discussion part. I only recently learned that the initial intent was to release those videos internally for your employees, so again, thanks for letting all of us take part in what you're doing :D Wish I had your beard!

[@dyltr0]

Thanks for these videos. I am learning a lot

[@aeclearn]

This is a great video! I am an HVAC Engineer and your videos are def helpful for the design too. Keep up the good work💪🏻

[@customcreations-rickkramer5357]

I love the music around the 30 min mark. Was half expecting the camera to turn and show John & Ponch riding up the road, turning on lights and sirens 🚨 and then nailing the throttle!!

[@MattSlocumSQL]

Made it to the end! Great videos, sir! I love your channel.

[@shadowbanned69]

This is why I put phase monitors on all my equipment...needed or not. Condom principle...better to have and not need than need and not have...one day it will safe thousands if not more...

[@joncoop2873]

Awesome as always!!!! super informative.... Made it to the end

[@codywiggins9387]

There was a blank plate in that location at once. Only supposed to remove it if you're installing an electric heat strip though. Great video as always!

[@wickedxe]

The armature looks like it was contacting the steel laminations of the field windings; my guess is that the lower motor bearing failed and the drag caused by the bearing failure caused the motor to be incinerated

[@aaronharrison7729]

I agree with you. Dirty micro channel and 410A= multiple head preassure trips could have caused contactor to stick and phase out compressor.

[@chrissjcgmail]

Thank you for the root cause analysis. I really enjoy it.

[@allenheineck2359]

Un-brazing the discharge line of a scroll compressor is a bad idea. That said, you're a quality tech and I like your videos.

[@rival_son]

Just so you know, some (usually older) breaker panels don't have isolation for the connection points where the wires will connect to the panel for the individual, breakers so it can be risky to work inside the panel (ie replacing the wires) as you can be very close to live busbars or connections. That's maybe why they needed to shut the whole building (panel) down.

[@rcctech1356]

Or the piece of crap Zinsco breakers and panels...still in use out there.

[@mtucker3401]

100% agree with not charging anymore on the split. You probably have a TXV that’s over feeding right now because it’s so hot. And don’t get me started on those wires sticking out the top. I’ve seen way too many dry rot and short. I always wrap my exposed wires in electrical tape. Trevor Matthews is an awesome asset! Great guy and great knowledge. Thank you, sir, for your dedication to the channel and and the industry!!

[@johnbell6956]

I like your videos. Very professional. Worked on identical unit last week. 2nd stage compressor shorted internally. Only difference was it blew out the L2 pin and the entire refrigerant and oil charge. Was a serious mess.

[@calicuts909]

Saw this whole video coming back from Vegas. Great video

[@inductoservice9866]

I think your hypothesis is correct. I know what sand does to your relays and contactors. Sand is a very good isolator. So it is very easy to get one phase missing situation which burns your motor. That is why motor protection circuit breakers are recommended.

[@dillonallen9626]

It possible the the reason why the electricians want to shut power down the the mail breaker panel / building is due to , pulling a home run they will be working dangerously close to a live bus bars.

[@fitybux4664]

Weird. They do sell very highly insulated rubber gloves for such occasions. (And face masks for arcing.)

[@EverythingisFire]

I love that brazing montage music 😁

[@ariasworld2808]

Awesome video thanks for the autopsy

[@eno_de]

Nice video, very informative and interesting. Especially for me as a german to see all the differences between the us and europe.

[@bradsmith9293]

I respect the integrity to which you do your wk. Your customers receive the best return for their $ spent. The BIG PICTURE battle cry has helped me in my own job to keep me striving to move further in diagnosis. We all need the reminder when things get summer crazy out here. God bless you and family, I appreciate all you have done and are doing!

[@samsimington5563]

The scanning effect (the effect you get from spinning something at a fast enough pace) is no joke (-:

[@randallweaver7034]

Another great vid! I watched to the end.

[@Georges3DPrinters]

Made me laugh out loud when you were shaking those wires because I immediately thought of a situation where I did this and no problems and a day later I had to come back because AC wasn't working. I was like "what the heck?" go back up there check my wiring and it took about 15 minutes, but I found one broken wire about an inch below where I just stripped and put on a new wire nut.

[@Georges3DPrinters]

45:12 nice offroad? wheel mod for your cooler.

[@thesoniczone]

On changing contactors: The same situation has presented itself THOUSANDS of times during my career in electronics. Relays, contactors, and the switches. They fail, and cause issues LIKE THIS! HVAC, gate automation, shutter door automation, you name it I've seen it all. It is a cheap component that can be replaced and prevent issues happening later.

[@Pystro]

Could you double up contactors? I.e. give the electricity a redundant second path in case sand gets into one of that pair of contactors and blocks it from making a proper connection?

[@thesoniczone]

@@Pystro No two contactors are the same, their speed to make/break will be different across the same batch, therefore one set will burn contacts and the other set will be hardly used and vice-versa. We tried this approach long ago in the early 2000s with gate automation- the solution was full VFD / H-bridge

[@Pystro]

@@thesoniczone Well, in my proposed use case the intent is to avoid single phasing (or other consequences of 1 of the 3 contacts staying open), which I would guess would then only happen for half a second at a time or so which won't burn out a compressor. (No idea if that's true, though. I'm not an electrician.) The inspiration was that the contactors are dirt cheap compared to the equipment they are controlling, so you can avoid using more of them (both in terms of frequent replacing and in terms of requiring 2 of them to fail simultaneously before that damage can propagate to other components). Secondly, if there's a grain of sand on a contact face, the current could go through the other contactor (while both contacts are "closed"), and thus avoiding arcs of electricity persisting around that grain long enough that it gets welded into the contact face - unless the contact face with the sand grain is the slower one to open, but even then you'd only get a transient arc. But I agree. In these conditions some silicon-based solution would be preferable.

[@thesoniczone]

@@Pystro I was an engineer for 14 years but I traded it for a career in software dev. I was working at one body shop (software development house) around 2016 and the A/C failed, yet it had electronics to detect single phasing, and it displayed the error code which we looked up before calling a service technician. We indeed did single phase and because of a wire that burnt off (YELLOW PHASE). So it is possible to detect these conditions electronically- I don't understand why they don't do this though on these commercial units.

[@lawrencecavens5760]

being that this video is 2 to 3 years old - you have to remember that even though you are not reading a voltage drop at that time - it will happen when you least expect it and contactors when they start to arc - over time get worse and worse and amperage gets higher and higher trying to do the work - add the heat load from the sun and - Meltdown - Its like you said sand contamination probably added to the scenario - Can a protective covering be installed to keep the sand out or would that add to the heat stress to the contactors ?? Just a thought...

[@gtmrefrigerationac]

Made it to the end, wonderful video my teacher 🌟🙋🏿‍♂️

[@slamdvw]

I wonder if a phase monitor could help those compressors live longer? Single phase - shuts down and logs the fault.

[@HVACRVIDEOS]

I will discuss this on my livestream this evening 7/25/22 @ 5:PM (pacific) on KZbin come over and check it out… or not kzbin.info/www/bejne/a3m2YXSdasuHm9U

[@antoniolaracuente437]

Hey buddy I like your style you always look out for the next guy coming up I've been watching your videos for a couple years now and I watched them all to the end you make it sound exciting you have to love what you're doing I tell the young kids today you have to love what you're doing I can tell you love your job I'm the same way keep up the good work Buddy

[@rc1581]

Great detail video! I’m an HVACR Technician Las Vegas.

[@ehsnils]

I'd consider to use a big lathe (works for round compressors, not oval) or a milling machine to cut the compressor open. But you use what you have at hand.

[@thesilentonevictor]

Great work Chris on this video

[@matiasmena7518]

Excelente contenido, mi rubro es la refrigeración y aire acondicionado domésticos en Argentina desde hace unos 9 años, y en mi opinión sobran los motivos para reemplazar contactores mucho más en éstas condiciones, sin dar demasiadas explicaciones a quien diga que no es necesario, es porque evita mayores reparaciones y costos asociados, podrías también hacer un video para orientarnos sobre cómo y dónde cortar compresores sería genial ver eso, excelente tu trabajo y realización del contenido!

[@sosayweall1952]

EET here! Could have been a rub in the insulation of the magnet wire, happens from time to time when manufacturing motors and transformers. This kind of issue could be dormant for years, then one day the winding get shorted to another one and the motor gets oversaturated and overheats.

[@SqualidsargeStudios]

I hate sand, it course, rough and it gets everywhere…

[@sherwinmendozaanago4174]

Love these Video very educational Video 👍😍🥰😊👏 watching from Philippines

[@richardhowlin6048]

Love the montage music, it sounded like the intro to your own sitcom. “Everyone Loves Chris “

[@tdev04]

I’m surprised you don’t have a molecular transformator for 410a recovery in that heat! I just got one to recover about 30lbs of 410a for a compressor change. It was high 90s in the Michigan summer and that thing made a HUGE difference in recovery time. Just dropped it in a bucket of ice water and let that machine suck. Never got over 300psi in the tank.

[@HVACRVIDEOS]

I will discuss this on my livestream this evening on KZbin 8/1/22 @ 3:PM (pacific) come over and check it out kzbin.info/www/bejne/foSsgIedhL2rjJI

[@DrBrown88]

Great video. I got some 80's vibes from your Montag music.

[@thephantom1492]

For the shutting fown the whole building: it is against OSHA to work in live panel (with a few exceptions). The electrician might be one of the few that care about their safety.