THEY LOST POWER IN THE MIDDLE OF THE REPAIR

This started out as a normal repair than they lost power, it made my job a bit more difficult but in the end all was well.
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00:00 SPONSOR CARD
00:10 CONTEXT
00:29 VIDEO START
02:00 WTF MOMENT
02:49 RECOVERY MACHINE TRICK
07:54 GO FIGURE
09:06 CONTEXT
09:27 A FEW MONTHS LATER
10:03 IMPORTANT SAFETY TIP
11:00 NICE BENDING TIP
11:27 BRAZING TIME
15:08 INSULATION TIP
15:25 FINAL INSTALL DAY
15:46 IMPORTANT CRANE TIP
18:39 NITRO TIP
19:32 EVACUATION TIME
22:23 INITIAL STARTUP
23:10 COMMISSIONING
27:43 CLOSING WORDS

[@Samthe17]

Legit read the title and said “ahh yes...typical California.”

[@JesusTilapia]

lol

[@brendanshull7627]

yup, first thing i thought was about how he always talks about how iffy the power is in his work area. “checking line voltage.....190”

[@ethanfitton6336]

California needs to sort out their power grid to get the correct voltage.

[@fnordingers]

Why is power such a problem in the US?

[@Lierofox]

​@@fnordingers Hoo boy... You want the short version, or the long version? Or should I just say "ENRON" and let you go down the rabbit hole? XD

[@LazyLifeIFreak]

As a small gardener I let my customers know that there is a 460% additional fee on work preformed on Christmas day or Christmas Eve. Keeps me from having to deal with stupid people.

[@thomasvlaskampiii6850]

Also allows you to spend Christmas with your family. Unless there's a legit emergency. Which, since you're a gardener, I don't think you really have emergencies

[@LazyLifeIFreak]

@@thomasvlaskampiii6850 Nope, not life threatening emergencies anyway, unless you count snow clearing and ice combating an emergency. *shrug*

[@JasperJanssen]

Why 460? It seems an #oddlyspecific.

[@williampatriot5622]

11:50 a little trick of the trade there using the tubing cutter to hold back the armor flex haha

[@throttlebottle5906]

quick grip clamps work well also, assuming you carry them for other things.

[@expeloco]

Here in Brazil we generaly use a breaker that is called "Motor Breaker" for 3 phase motors like that, this breaker it's like a contactor that shuts off in case of problem with some of the 3 phases, when the 3 phases come back to normal it turns on again saving the motors from problems.

[@thebigmacd]

A lot of newer equipment comes with phase loss detectors.

[@JasperJanssen]

You could I suppose just put three single phase relays in series, and wire the whole thing into the line that goes to the motor contractor. Although those weird unbalanced phases like 40/80/120 volts might not get ‘r done with that. Some electronics are probably more reliable.

[@denverbraughler3948]

@@JasperJanssen: I don’t see how your idea would work. All three phases need to be within the labeled operating range, (with all three having reasonably the same VACRMS with respect to the grounded conductor). Otherwise, you have a loss of phase.

[@JasperJanssen]

@@denverbraughler3948 each of those relays wired to each one of the phases. If any one phase is missing, its relay disengages, which causes the feed to the motor contactor to drop and therefore the contactor to drop out.

[@denverbraughler3948]

@@JasperJanssen: It’s unclear whether you watched the video. Your design won’t detect a missing phase because - as shown in the video and as other commenters have explained - there is inevitably sufficient voltage on all three phases to close relays whenever any single phase is supplied from the power company depending on how the transformer bank is configured and what loads other customers have connected. Notably, a running three-phase motor when a phase drops out is able to generate the missing phase and back-feed to other devices. You wouldn’t even detect that the phase was being generated by your own equipment that you’re trying to protect.

[@truthsmiles]

I would love to see a video all about how you bend hard and soft suction lines of different sizes. You’re amazing about showing and explaining everything but those beautiful bends just seem to magically appear :)

[@thomasvlaskampiii6850]

A magician never reveals his tricks ;-)

[@ReliableHVACR]

Man I'm so jealous of these calls, my customers won't approve all that 😂 , I just get to enjoy watching...nice little tube cutter tip too.

[@ElmerCat]

In 1965, there was a massive blackout which affected much of the northeast United States. However, instead of the power going out all at once, the voltage in my area slowly faded down over the course of a couple of hours. Incandescent lights just kept getting dimmer and dimmer, but as you can imagine for electric motors, it was disastrous!. My father raced around town turning everything off, but numerous motors were already damaged by the low voltage and had to be replaced or sent to Mr. Parslow's shop to be rewound.

[@Bryan-Hensley]

I've got a 3,500 watt inverter on my van. It's awesome to have power everywhere I go.

[@matthewmiller6068]

Pure sine or MSW? I've had a hard time finding one big enough to start a refrigerator or run large tools without shutting down on overload, found a 3/1.5kW one that starts a refrigerator but I worry it won't cut it for a power saw if I had to do some DIY cuts in the parkinglot to fit things in my car.

[@throttlebottle5906]

@@matthewmiller6068 there out there, but the problem is massive power draw, no vehicle on the market has enough battery bank or generation to supply them. with exception of some hybrid electric cars and massive commercial units. you're better off with a diesel or gas genset plumbed off the vehicle fuel tank.(motorhomes and others have been that way for years)

[@leosbagoftricks3732]

It's great to follow someone who really knows what they are doing.

[@RJMaker]

My only thought on pushing refrigerant into a system is using a line drier right before in enters your manifold or equipment. If you cut open a recovery tank ( or even an old recovery machine) you may be surprised at what you find.

[@throttlebottle5906]

lots of nasty schmutz for sure ;)

[@ehsnils]

It's single phase but you have back-current and it's probably the same phase feeding all three wires. And that's why you shall have ganged 3-phase breakers and fuses today so when one phase is overloaded it cuts off the others. Even better to also have protection circuits that cuts the power if there's an out of range voltage, but that's of course a bit more expensive and has to be weighed against the price of replacing the equipment. Delayed start after a power outage is also something that can be helpful to avoid repeated power disruptions and blown main fuses. A delayed start can of course lead to some surprises too if you don't know it's there.

[@jeremyhall7951]

In the industrial world we install switch gears with phase monitoring so that they shut off when they lose one or more phases. And most of the relatching mechanisms are electronic so nobody can bypass this . Imagine single phasing 40-50 million dollars worth of motors in a processing plant..... ouch. 😬😬

[@stueyknuxx]

need to invest in some phase monitoring/phase failure relays, usually installed in series with the mains power into the package unit or whatever equipment it is, and if it can't see all 3 phases the internal switch won't make a circuit and allow any power through down the line. Alot of equipment in Australia have these installed in them. We don't have alot of power issues where I am in oz anyway but I know you guys do in cali from time to time, not a bad investment for your clients I reckon. Great videos Chris 👍

[@lutboy2909]

Actually that's a good idea dude, actually that it could be useful in my old workplace with 9 trane air controllers for the chiller who was a trane RTA from 2009 or 2008, a big old system with scroll compresors on r134a

[@stueyknuxx]

@@lutboy2909 yeah man 100% ! Has saved a few comps on my sites aswell over the years 👍🏼

[@FerdinandFake]

In my experience here in germany, these are the failure point more often than they detect a failure.

[@throttlebottle5906]

@@FerdinandFake sadly, that happens everywhere with them, they become the failure point!

[@HappilyHomicidalHooligan]

Wouldn't the best place for phase monitoring breakers be the Mains Breaker between the City Grid and the Site Distribution Panel? Protect EVERYTHING from a lost phase in the City Grid...

[@lutboy2909]

That's was a good trick for charging the equipment without turning on 👍

[@winstonwright3613]

Nice! I had always theorized that a recovery machine could be used this way, and then i got caught at the end of a repair just like you did, but residential. It worked for me too, but the power didn't come back on before I left, so I just had to hope. But the system started up and worked fine according to the customer. I've since been out to check and fine tune it tho. Couldn't sleep otherwise.

[@ICountFrom0]

This will make a good lesson to your crew for what can be done in emergancies. Well done.

[@prezpell8596]

Thank you for sharing your challenge, I am out of the field for 4 year and your videos refresh my mind and update in the new product in the field 👍

[@jamestoy426]

Thank you so much for doing the videos I always learn so much from you i have been out of school 8 years and I learn so much more from your channel

[@rickreeder3190]

Great job. I particularly like the use of nitrogen and the annealed 90's in the rigid. You are a real professional.

[@arturovod5847]

You have an interesting job! And when I was a little boy, I was 11 years old, I helped in the Boiler Room in the pool, my mother worked as a swimming coach (helped local masters) To get a kitten out of the ventilation was in 1990! In the Pool in Kiev!

[@lancelot2224]

I've been in the field for two years now. Been more on supermarket refrigeration. I have to say man I learn a lot from your videos. Good install brother.

[@GeminiSeven43]

Wow that looks like a great unit to work on and lots of room to work. Great video

[@epievlog3219]

yeah i love installation.nice layout odf pipe goodjob sir chris

[@anthonywoolf9087]

Great video I really appreciate you taking your own time to make the videos I am in the field and honestly can't imagine recording and take the time to make videos so good for you and I'll keep watching lol

[@Yesterdie02]

thank you for the content....I am not a HVAC but a Plumber and I like learning from your content as I do occasionally work with the HVAC at work and it really gets me thinking allot about how AC units work. Love from South Africa

[@jimmuo9286]

Nice diagnostic approach. What I haven’t seen is any discussion on safety for single man calls. Such as Lock Out Tag Out to ensure you don’t get BBQed while on the roof when some helpful employee turns the breaker back on. Another is first aid kit. Good channel!

[@marcycami]

Those hard copper bends certainly look good! I should try them myself next time, I've only done them in soft before.

[@williampatriot5622]

Always satisfying to replace old, beaten up units with brand new efficient ones! (We just replaced a unit that was from 89, preceded me by 14 years!)

[@zarand2554]

You're that young?

[@williampatriot5622]

@@zarand2554 yup, 17 😂

[@zarand2554]

@@williampatriot5622 I preceded you by 2 years. 2001. 19 years old.

[@alanlocke7639]

It's possible there was only 1 leg restored and those voltages you were getting were from induction. I've seen that before.

[@stormeagle28]

A common thing what happens is at the moment the power comes back, the inrush current from an area kills the fuses for that area, sometimes even the high voltage feeder fuses somewhere. As a result you lose one or two phases, which are then backfeed through still connected three phase equpiment. This is what you're measuring relative to ground in this case. It's not just static or induction, it can deliver some serious power despite the low voltage - so don't mess with it!

[@throttlebottle5906]

there would have been back-feeding from other business/homes/etc. in the same electrical segment, from their 3 phase/pole and two pole breaker devices being on. big induction is possible on unhooked/very light loaded parallel lines, which is why lineman ground everything to keep from being killed. zap zap zap.

[@TheWoodman064]

You are an incredible perfectionist! Great work!

[@instrumenttech4220]

Very nice pipe work and some good ideas 💡 brother thanks

[@braidenluedtke2592]

Hey just a tip I keep two one-inch spring clamp's on my torch kit they are great for holding insulation back or pulling things out of the way.

[@daoutdoorvloger1822]

The strange thing with the power cut and the voltage appear in the ground happens yesterday to me and ground the compressor on my air condition that I install and told you about it on an old video you upload.I think the walk in freezer retrofit with zoom look video was the one I told you about.So I had to change the compressor and it wasnt great for pay 350€ but its worth it.

[@knockitofff]

not a bad idea to quote the customer with phase monitors on the 3 phase motors, they're relatively inexpensive (compared to the alternative). But I'm sure with the scary virus restrictions they're operating on an even tighter budget

[@brandonmays7345]

Been in the field for 13 years and I try to soak up knowledge anytime I can. I learned you can anneal and bend hard drawn. Never tried it. Good stuff

[@scott5654]

Make sure you flow nitrogen when you do it.

[@dale116dot7]

I had the same single phase problem in a building I was at, it happened often enough in that building that we added phase monitor relays to all of the equipment.

[@donnierobertson3088]

Great job and video like always

[@elijahtalbot5288]

Nice video great problem solving

[@peterman8058]

Nice work!

[@ed6837]

DuPost Refrigeration Manual. You can find it on line. very good information on piping and pipe sizing.

[@robertwheeler8476]

I agree that you don't need a P trap for oil return... you need them over a 3m rise (9 feet in American money!!!)

[@Drewdriskle]

Great video 👍🏽

[@rgluna70]

Awesome job 👏 bro as a tech we to do the craziest things to get the job done

[@weldingman57]

Liked the pipe cutter trick. Semiprofessional agriculture/residential water pipe solderer I’ve always used my leatherman and just cut the inso away, fix and retape.

[@TylerHVAC]

23:23 sounded so good. Those fans gave me goosebumps.

[@elogy890]

Man, that line set looks satisfying.

[@ng2977]

If the line size is calculated there is no need to put a p trap for a riser of 5 feet. Once your at about 15 feet that's when I would start thinking about doing oil traps. Great video. Keep up to great work. 🍻

[@ReliableHVACR]

Heyy 🤙🏽 interesting power issue. Nice recovery procedure, haven't had to do that yet. Good to know.

[@sterlingarcher46]

I work on chillers and water heat pumps so we pump refrigerant back into the units using the recovery machine all the time , I was literally doing that just a couple hours ago . If only I had the Fieldpiece gear it would make it easier and quicker I bet 😓

[@jeremyd9826]

Had an outage at the jail I used to work at. Something at the substation fried and when they restored power it took every 3phase motor in the building out. Took a month to fix everything. The air-conditioning was out for 2 weeks waiting on compressors. In June in south Georgia. It was miserable.

[@mrbyamile6973]

And to think how cheap phase monitors are now they should be in all 3 phase equipment.

[@tubeDude48]

Never understood why Black foam is used, when White foam will soak-up less heat from the sun!

[@moraleader9140]

I love watching you videos. You have even inspired me to go into HVAC myself. Also how can you tell the difference if a king valve is back or front-seated.

[@chrisroberts2266]

14:15 thought that was a piece of toast!!

[@terrycollins5120]

I work with electronics and electricity; I've seen floating circuit induction. You see, all A.C. circuit wires have magnetic fields around them; the greater the voltage and current, the stronger the magnetic field. Thus, you have magnetic induction on the floating wire. That explains why you saw those crazy voltage readings on the terminals. Pulling the breakers was the best and smart moves.

[@DavidvanDeijk]

that bend looks incredible.@11:05

[@toddthegamer]

And I though it’s annoying when the power goes out and my WiFi and computer shut off, lol

[@leonbogon148]

Nice job.....

[@Mavinga87]

Just amazed at how many of the equipment you work on is still on R22- in Australia we get excited if you come across R22 stuff- usually it's only the very old equipment (15years or more) that has R22

[@bemega4331]

In the Netherlands we're not allowed to work with r22 anymore😅

[@Mavinga87]

@@bemega4331 we can only use R22 that we recover nothing is imported anymore.

[@mikepict9011]

I like your piping

[@neilvestervictor180]

great change up Chris big picture diagnosis lol

[@hvactechpr7872]

In the tropics here depending the area you'll have problems but if it's in the mountains gotta leave it in...

[@mark351]

Ahhh, Saturday morning, breakfast, camping and HVACR! How do you charge for your time when circumstances beyond yours and your customers control happen?

[@pepsicolachao4537]

Oh gosh! It could be a pain in the butt when this kind of event happens.

[@heavydiesel]

We had one where the compressor was making horrible noises, turns out the electric company had two phases on the national grid supply and the third running off a generator! Kept going in and out of sync making it sound like the motor was seizing up!

[@denverbraughler3948]

I suspect that someone mis-explained what the electric company was doing.

[@arizonahvac9127]

Are you familiar with the AAON units we have to put ptrap on the suction line every 13ft. Seems like if the compressor is above the air handler more then 13ft they require a trap every 13 ft. It makes sense so the oil goes back to the compressor but I'm going 9 floors. It's been fun lol.

[@MarkAtwood0430]

Would you ever do a video showing load calculations? Great install even if the equipment wasn't pretty lol

[@HVACRVIDEOS]

Yes I am currently working on a land calculation and system design series

[@LMSILVIA]

I guess power is very reliable there but out here in the tropics every three phase powered anything gets a 3 phase supervisor protector. Any funny stuff with voltage or lost phase it goes off automatically until everything is right again.

[@MultiBrommer]

2:13 that is known as a brownout. some name it undervolting.

[@finn9898]

14:19 looks like toasted bread

[@forceablepizza764]

Im curious, with all the equipment installs you do, have you ever received any doa equipment? How do you handle a situation like that if you do ever receive doa equipment? As an atm tech, a lot of our parts are rebuilt, we dont get new components very often, so naturally we get a lot of doa parts and its annoying for both us and our customers

[@scott5654]

Thank you for asking that, I’ve been wanting to ask that for a couple years. The one and only time I ever broke my own rules and did a favor for a realtor because it was their parent, the circuitboard in the new equipment was DOA. It turned into a horrible situation where the realtor threaten to call the cslb. So, I just called my lawyer.

[@FerdinandFake]

If the equipment is complicated and cheap enough its unavoidable at some point. Just installed a 50kg 134a unit and one of the high pressure cut outs was DOA. Not too bad, its works good enough with one of the compressors down until we can get someone in with a replacement, but still annoying. Its really bad when you get a huge electrical box pre-wired and they made some mistake thats not instantly obvious at start-up. Whoever answers that service call might go mad before he figures it out.

[@panagiotispsomas5611]

27:14 this system we called collector in Greek colectora or colecter is more efficient than typical condensing unit. Linde aka carrier is started to use this system from 2003.

[@cgsound]

Phase loss monitors are invaluable....... over volt ,under volt , lost phase they save motors!

[@FireAlert]

well that sucks

[@OzzieJeza02]

I really do find the American refrigeration stuff interesting, as someone from Australia (where it's needed almost everywhere), you do it differently over there. The be question I have is why don't you put insulation on the return line? A lot of systems in Australia have it on both lines.

[@mrbyamile6973]

If by return line you are referring to the liquid line, you don't want it insulated you want it to reject heat to the air to slightly improve sub cooling. Some brand of mini-split units have the metering device in the condensing unit so those will have insulation on both lines.

[@TheCrystalGlow]

I’ve seen a bad High voltage power line disconnect cause that exact sort of low voltage issue.

[@sterlingarcher46]

I was gonna ask about the P trap on the riser but you just addressed it 😀 I thought it was an absolute must all the time , I guess not necessarily then eh ? By the way really curious to know , does the condensing unit come with an oil separator ?

[@metrotechguru5863]

Never a dull moment. Eh, Chris?

[@Curlzim]

How do you calculate the need for additional refrigerant to accommodate the line set from the condensing unit to the evap?

[@karlschoen7297]

What are your views on using number 8 solder for AC or refrigeration been seeing a few people use that lately may have missed your videos regarding that if you did, enjoy watching a lot of your videos

[@DESUDESU24]

One time at my office we lost one leg of 3-phase power and one of the partners realized immediately that the big 3-phase roof units needed to be killed. Saved the units. It got warm for a bit until they brought back the 3rd phase and the units were turned back on. They were still replaced a few years later tho lel. one of them was over 30 years old and the control board would keep locking up, and the other one wasn't as old but it just up and died. I'm pretty sure the main office area was the old one because when those compressors kicked in you could hear them vibrate the entire roof.

[@whatevernamegoeshere3644]

Man, that poor extension cord is seriously on the way out lol. Look at all the twisting :D If it gets twisted enough, the internal insulation will fail and it will pop. It comes from wrapping it the same direction every time, then laying it out and moving it. You put the same direction spin in it every time. Use the over-under wrapping to prevent that, or get a vulcanized rubber cord that can handle a lot more.

[@HVACRVIDEOS]

Yeah I was using someone else's stuff and I have since told him to replace the chord

[@whatevernamegoeshere3644]

Ah makes more sense :D

[@realestateservicessaleshea99]

Why are you the only one I've seen so far that separates the vacuum pump and the micron gauge to read the whole system? 🤣😆 Nice! Also I use YJ 18993's just so it feels like service valves.😆 🥃🥃🍺🍺🍺🏌🍇 Stay safe. Retired keyboard super tech. Wear your SAFETY GLASSES.

[@turkeyslayer63]

4.09 @ Loves in Colorado today.

[@tubeDude48]

How often do you go for training on new A/C unit electronic design & Test Equipment?

[@SvenSigi]

Where can i buy the swage bit for the maschine? (electric expander)

[@gadgethunter5732]

Hahaha. Aug.14th / 2003. I was checking out a no cooling on a Lennox rtu. in Windsor Ont. All of a sudden , no power. As I'm descending the ladder the staff from the store are at the bottom asking "What did you do?" Seems I blacked out most of the Northeastern and Midwestern parts of the U.S. and Ontario CA. Now you all know. Sorry bout that.

[@HVACRVIDEOS]

Ha ha

[@madyottoyotto3055]

Hvacr videos I live in the UK See lot asking why we don't all have AC in short it's a lot of doller for 17.5 days a year lol Is there anything in-between a full AC system and electric cooling Or what is the most cost effective way to cool one room highest we would expect in a year is 32c ish

[@transmitterguy478]

What do you do with those defrost timers, set to go off for an hour, when the power goes out?

[@danielelise7348]

Hey mate, just going through your back catalogue, just a couple of questions; what kind of $$ are those Fieldpiece manifold guages? also,what kind of batteries does it take?Love your work mate,work safe,cheers from Australia 🇦🇺 ⚡🔥❄️

[@CursedSouthwest]

Hello!

[@CursedSouthwest]

Wow I’m accualy fiest

[@tristanhameleers7506]

I hope you didn't make that power outage happen :)

[@tristanhameleers7506]

No you won't you are a professional a good professional

[@riccardoz2953]

Honda generators are the best ! Yes they're pricy but if u are a professional they worth every single cent. Plus, if u choose wisely, u can buy models that can be paired togheder with an optional and provide double power in a single phase setup !

[@chavescrave]

Hey Chris - great video. I just want to know when are you starting your real working mans cooking videos?

[@SchwaAlien]

Our old building got a phase disconnected by an exploding squirrel running over the fuse / switch on the power pole and we were getting strange voltages on some of the circuits, also the 3 phase elevator was down for a day after the power was restored, someone probably should have disconnected it during the incident but the management / maintenance isn’t in the building so not much happens immediately, techs have to be called. Now I’m in a house fed by single phase power but there’s a generator because the power is cut fairly regularly due to the fact that we’re on a smaller island, however the real challenge is the corner store I’m here to help run; it also has a generator that is connected to a walk-in cooler but there are several other refrigeration units that aren’t wired to it, 3 propane ice cream freezers and a big stand up freezer the size of a walk-in but just has doors on the front. I don’t think the 8kw gen can handle both the walk in cooler and big freezer simultaneously but it looks like there may have been plans to give it the ability to cycle through different loads on a schedule or something like that because it has 4 different switching outputs but only one is being used... we’ll see how things go during our first multi-day outage. 😅

[@christinab7131]

I have a customer with this same unit , and 2 years later I just had to replace the cheap ass Fan Cycle Switch. I put a nice Ranco in its place.

[@johnrece6622]

I've ran into a lot of faulty headmasters on those heatcraft units

[@chieft3357]

Do you recycle all the old copper lines you remove in a job like this one??

[@denverbraughler3948]

Any three-phase motor running on two phases will generate and back-feed the missing third phase, even if not on the premises but drawing from the same set of electric supply transformers. Any equipment connected to two phases, even a purely resistive load, will obviously backfeed an equal amount of current from one phase to another, but it will be 0° out of phase instead of ±120°.

[@Blasterxp]

Does it needs to be glowing red hot to solder?

[@georgegonzalez2476]

Do you ever use flux when brazing copper pipe? We always use flux when soldering.

[@HVACRVIDEOS]

No need to if you are brazing and using silfos rods as the phosphorus acts as a fluxing agent for the silver..... but silfos only works copper to copper, if you are brazing dissimilar metals such as copper to brass or copper to steel you will need to use high silver bearing solder and that requires flux.... ive never used any of the low temp solders such as stay silv 8 though

[@MariosACandRefrigeration]

I am glad you addressed line sizing,when oil and refrigerant hits the valves it kills the compressor.nice job and video thanks for sharing.