Trane package unit no AC Part: 2

[@josipbroz5434]

Finally someone who know how to braze!

[@deloct]

Very helpful videos. Be waiting on part 3! Thank you for taking the time to share.

[@beardowns8050]

Ounce per foot of hose I learned from CFESA. Great videos! 👍🏽

[@Fict10n]

Was on a job recently with a similar unit that also had the same hot leg going straight to the compressor. A previous tech found the compressor shorted to ground, so he did was he normally does and disconnected the 24v going into the CC to prevent it from coming on. The unit was a 2 circuit 2 compressor unit and it was serving an IDF room that needed to be cool 24/7. So, after powering off the unit temporarily to diagnose and disconnect the shorted compressor on circuit 1, the tech flipped the disconnect back on and the entire building went down. He didn't notice the hot leg going straight to the comp, so when he powered it on it sent 480 volts straight to a direct short, resulting in the main breaker for the building getting tripped. Needless to say the company proffered another technician to replace the Compressor instead of the guy who took the building down, so I ended up changing it out for them lol EDIT: My theory as to why they do this is simply cost of manufacturing. 3 pole contactor is more expensive than a 2 pole, so if you're manufacturing hundreds/thousands of units a year, saving 10-20$ per unit can add up to a lot of savings.

[@killman369547]

oh man, 480v to a hot short would produce quite a flash. probably scared the shit out of him.

[@sparkytech8787]

Pushing the old oil out was so satisfying to watch, please keep the video's coming.

[@chrisscerbo5731]

I glad you pointed that out about that black wire. I've been noticing that a lot lately and on brand new unit whether on a split system condensor and packaged units

[@sterlingarcher46]

Hey , curious , nice vid 👍 I think one winding Is constantly energised to act as a crankcase heater , you got it right , mate . I say that because I know as a fact of a particular OEM that does do that on some compressors . Nice one !

[@curioushvacguy6876]

Awesome, now I can file that nugget of info under actual facts in my brain instead of the I think file, lol

[@sterlingarcher46]

@@curioushvacguy6876 the problem with this though , is that you cannot allow the compressor to go in a vaccum while energised , which can be a pain in the lower back . All that just to save on a crankcase heater , I mean ...🙄

[@sprockkets]

Without the other 2 wires there is no circuit. It does nothing.

[@SpazyFunk]

That unit had a 2 pole contactor from the factory that's why that black wire is going to line voltage. 😀

[@joshstevens9826]

U r correct about the cch. Thats how trane keeps the cch on during off cycle and off during on cycle

[@jacobcolby1423]

Looking forward to part 3! Great vid as always.

[@bobbyholland9357]

Good work guy, on carriers you can cut those liquid line headers out at the evap coil and rod out the pistons with a tip cleaner and reinstall with 3/8th couplings. I've done two of them. I've seen others retrofit the tranes with TXV's. I've never done this, and it seems like alot of work. I would just replace the evap coil.

[@curioushvacguy6876]

Great tip

[@JuanTodoli]

That cold feeling on your back 😨 after been doing a clean work and charge... looking fordward for the nex video. 👍

[@rowdybroomstick1216]

You should contract for K-MAC , lol 😂 just call a crane & Trane, done. They would've replaced whole unit due to compressor failure

[@CHOMAHOMA]

Wooooow. That was a ton of oil in the condenser. I am surprised. Good video.

[@jonnymac31]

Nice looking replacement man. Only breaking 2 of the three phases allows the crankcase heater to be de energized by just closing the contacts on the contactor and not using a aux or seperate relay. I don't think thats the exclusive reason but it's a neat side effect.

[@chriscooley906]

What a great teaching moment, Love the videos thanks for sharing curious

[@ares3914]

Sounds like some of those units or buildings need surge protection. That would protect compressor/board from that happening again. Seems to me like that happened through power surge. We usually put surge protection on unit or to incoming high voltage to the units

[@curioushvacguy6876]

Thats not a bad idea-

[@gene-khvacr]

Glad you posted went thru same tech support had no definitive recommendation did all of that except heat up the orifice running nitro,we wr the 4th company on this client didn't want to spend more, thinking about it should have quoted to changeout the whole evap setup n get done with but then again they had all kinds of duct issues !!?? Smh

[@houbal7350]

hi friend, i always use suction line filter with compressor damage , and second filter dryer by the txv . what do you think about it ? sorry my English is bad i am from the netherlands

[@Eddy63]

By golly Curious I'm a 1st time viewer and a 1st time subscriber ...Keep up the good work / vids ...

[@coreymills2817]

I believe they have the black wire going to line voltage to act as a crank case heater by keeping a winding hot and it will help keep the oil in the compressor so it doesn’t start up with low oil.

[@brettwing737]

Piping job looked awesome!

[@dukestripling6301]

The next time you install a test port please video that so I/we can see how it's done . Thanks

[@curioushvacguy6876]

Will do for sure- thanks for the support

[@hrdworkin7633]

Great Video and tough job. I have seen a TXV replacement kit made exactly for the piston header before. Might be an option. I look forward to seeing how this works out.

[@grindstone5368]

They do have conversion kits for that it's a better way to go for sure...

[@Crisis-1837]

Theres another youtube guy "hackfreehvac" that has a video of i believe a home made one he did a couple years ago on his channel.

[@Crisis-1837]

@@curioushvacguy6876 kzbin.info/www/bejne/aausppl5ibKog5Y

[@TheRushrules06]

I know this was a year ago but something I do with greasy rags and what not is I take them to the laundry mat so that junk doesn’t go in my washer just a idea

[@joea2274]

You sead acid in the system. How did it get there and why was it in there

[@curioushvacguy6876]

Hey Joe- I believe it got there because the other technician didn't practice proper refrigeration practices- judging by the quality of work I doubt he pulled a good enough vacuum to remove all the moisture from the system and that moisture is what caused the acid, the excessive heat from the drier being in the wrong spot didnt help either. The water mixes with the refrigerant oil, mineral oil in this one I believe and it forms hydroflouric acid -

[@joea2274]

@@curioushvacguy6876 well learn something new everyday.

[@dizziedallas]

What a bummer! Time for a TXV kit or maybe drill the header a clean the orifices?

[@actechformallyyomama746]

When the header needs to be replaced I use my lineman pliers to cut the 3/8 feeder tubes off the header. When you unsweat them move them in a gentle 360. This opens the the holes so the new distributor will fit easily. The dryer on the discharge line probably blew apart. This contaminated the unit. And on a safety note lay the nitrogen tank down. If it falls over and lands on the regulator your gonna wish you had laid It down. If the tank is laying down it cant fall over.

[@joshstevens9826]

Auxiliaries seem way easier to me, but trane decided line backfeed was the way to go.

[@articairrefrigeration9142]

Good job Jason

[@saltrue1555]

Awesome video thank you

[@kennethlobo4420]

Just a question when u changed the piping with regards to the discharge line i notice a u bend does this help in the oil return? The other question is when the compressor start up would not a phase sequence tester help? To make sure u have the right rotation.

[@waynehensley132]

Beautiful job

[@RJMaker]

Oh an kudos to your partner there. It's rare I see someone who actually brazes correctly. (Flows solder at the farthest point from the flame). So many want to walk the flame around the pipe 1/2 dozen times with the solder.. :-)

[@sprockkets]

Lol, 7:00 I know of techs in my old company that still do it that way!

[@chrisscerbo5731]

another question. how do you feel about 427a as a replacement gas for r 22?

[@chrisscerbo5731]

I like it. the pressures are very close. sometimes your may need just a little more gas to get that sub heat and sub cool right where you want it. and mostly I put it in cause it saves the customer money

[@brettwing737]

Is the Txv wide open when flat if it doesn't have any pressure in the system for equalization? I always thought it would be totally closed when flat cause It doesn't have equal pressure pushing up as is pushing down from the power head. Not sure that's interesting.

[@theberrybest]

For future, use a 7/8 dishwasher hose and run it to a bucket to help keep the job cleaner.

[@oldtimehomestead1554]

You were right on the wire they use winding as crank case heater by having constant power to that winding.

[@Nerfcar1]

Keep a phase sequence tester on your truck!

[@abdullah_q8171]

Is the trane compressor made by trane ?

[@markzamiechowski5352]

I would flush out the condenser with a mix of pure alcahol or acetone and atf then flush with acetone to clean it out of any crap that got inside

[@curioushvacguy6876]

Ive never heard that before, I wonder if that alcohol does a good job with breaking down any left over oil in the system

[@markzamiechowski5352]

@@curioushvacguy6876 atf for breaking down oil and acetone or alcahol to remove the atf since it can mix (atf(auto trans fluid) is a detergent) and the alcahol flush after it to not leave water or other non condensables in the system

[@curioushvacguy6876]

Awesome bit of knowledge there- thanks for that

[@FireandFrostHVAC]

First comment! I’ve never really liked those pistons on the evaporator coil. What’s wrong with a TX Valve? Great video, thanks!

[@abdullah_q8171]

Why trane air conditioning is butter then other brand?

[@brandonrutt2898]

You could have unsweat the header and installed a TXV. New evap coil is probably the best bet if the customer is willing though.

[@brandonrutt2898]

Curious HVAC guy they’re pretty straight forward. I feel like you run into way fewer problems down the road when you install the TXV kits.

[@skywave12]

So this is 3 Phase 480? I work with that Daily. I guess Arc Flash Training is not good above 230 Ac. Or otherwise. :-) Be careful with arks above 230. And children at 110 Vac in a simple Pond where a contractor bypassed a Ground Fault. If you do not have a Good Ground System there will be little differential between phases at the detectors.

[@danieldellorto5359]

Why don't clean the cool with 141b??? Mmmm....

[@joecorbin5158]

How old was the unit? Prime candidate for your salesman side to shine

[@curioushvacguy6876]

Hey Joe- I believe it was around 10 years old, not exact on that--But I did recommend they replace it and submitted a bid to there third party facility management company, but they said no and told me to just repair it--would have been a better choice in my opinion as well,

[@jonathanschulz5841]

Factory doesn’t want to pay for a 3 pole contactor. So they use a two pole with a hot leg. Carrier does the same thing. I hate it. Big safety concern for me. Easy for a new guy just to assume the motor has no voltage with the contactor not pulled in and get zapped.

[@curioushvacguy6876]

Thats a very good point Jonathan- Thanks

[@sprockkets]

This unit though has 3 poles though...

[@bmillwood6666]

It's probably the filter drier exploded into the system from being piped on the discharge that clogged the office issue.

[@jrsmyth9761]

Maybe I am missing something, but how is the filter/drier on this unit on the discharge line? Isn't it on the outlet side of the condenser, just like any other set up? Also, someone has been monkeying around with that other unit's filter/drier as well.

[@yaronshwartz1430]

hello from israel.. what is the difference between the black copeland end the red copeland i didn't come across them in israel ...

[@curioushvacguy6876]

Hey Yaron- to be honest I believe one is made a certain color for the manufacturer and one is not, Red I believe is what Trane wants in that unit and the black compressor I installed is just a plain jane replacement. I say that because both compressors are the same- but I could be totally wrong

[@yaronshwartz1430]

Thank' man. Keep up the good work. 👌👌

[@chrisscerbo5731]

wow that's a lot of oil. nitrogen definitely doesnt last long enough especially when your on the roof. lol

[@itsmemsti]

That rag was the old recovery model. Now it's the suction filter model. Hechale ganas.

[@SpazyFunk]

Nothing Stops a Trane.. LOL.

[@RJMaker]

Ain't that something, just when you think you "got it in the bag" BAM.. "Not so quick there fella." :-). I have made it a MUST that in a system that has gone nuclear (acidic), all the Meters get replaced. By the way, why didn't you install an SL Drier? You MIGHT be able to clear those accurators (or whatever there called). Pull the charge, cut the LL & SL lines to their respective headers, use N2 to blow through them as you heat them up slowly. The challenge is pushing enough N2 through while heating them up hot enough to melt off the wax and clear the meter, just below the point the joint weld opens. :-) I would never ever try that will refrigerant in the system.

[@RJMaker]

@@curioushvacguy6876 I would urge you to reconsider on the SL drier.

[@skywave12]

Also lack of thermal overload Protection for the Motor.

[@ares3914]

Did you see how dirty that guy brazing was? Dirty ass mechanics lmao . Good brazing though

[@curioushvacguy6876]

The first time I saw that mess, I almost fell over-- who does that and walks away thinking they did a good job, Im by no means perfect but I try my best-- to many people taking the path of least resistance through there days

[@kennethlobo4420]

Take it easy.Dont judge harshly

[@sprockkets]

The black wire thing is something Trane likes to do for whatever reason. Without a complete circuit though it can't do anything.

[@sampantiliano]

Two pole contactor is cheaper than a three pole.. more $ for Trane.

[@curioushvacguy6876]

Good point-

[@rrm4cy]

When you see that much oil in the condenser you know your evap coil and metering device are f’d because there’s no way it’s staying in the condenser coil. That was one bad compressor.

[@steveblake8766]

#50 Thumbs Up

[@articairrefrigeration9142]

I like r-422d

[@russell4309]

👍

[@ares3914]

Heater wire

[@curioushvacguy6876]

Interesting

[@jeffb8437]

What completes a circuit on that single phase to allow current flow?

[@scottkrempel3005]

enough oil to deep fry a turkey.

[@articairrefrigeration9142]

I remember when my beard was that red

[@eggman9713]

I feel like that cloth deserves hazard pay for the amount of oil that you put on it.

[@bmillwood6666]

That's trane typical 3 phase wiring for compressors. Don't know why though.

[@hvactechpr7872]

Trane does that alot also the 240v coils on contactors also they usually piggyback for the crankcase heaters

[@hvactechpr7872]

@@curioushvacguy6876 no problem I remember as I see... I do lots of commercial seen it all and modded alot....

[@Imwright720]

You do realize the only reason people watch videos is so we can tell you what you did wrong. I’m still waiting, do something wrong.

[@rubencastillo2623]

It looks bad u gav a prize to fix now theres mor problems thyll blame u think8g u d9nt know wts the real problem nex time on burnout condem it if thy want fix no garentee itll work same n letem kn9w more issue might pop up

[@articairrefrigeration9142]

Hate the utube police they just don't understand sometimes you can't film everything

[@ICONBADGTA]

Dude, it's (2019)!!! Mount the damn vacuum gauge on the actual "PIPE" you wish to pull the vacuum on!! That is what you need to get a reading on, not the "HOSE" you are using to pull the vacuum with!!! Geez! All you are doing is measuring the vacuum at your "GAUGES", not on the (ACTUAL SYSTEM) you need to measure!! I would (NEVER) trust that!! Pull the vacuum through one port then mount your vacuum gauge on another the furthest away to ensure a leak free full circuit!! I have a video on my KZbin, shows how i do it except i now use Appion VCT's on both so i can turn them off before opening my valves to avoid refrigerant/oil contamination which can be a biatch to clean our of a micron gauge!! So much better, and without the cores you get a more solid and real time reading... No sense in not having them if you are a (TRUE PROFESSIONAL) as from what i can tell you are... They are not that expensive.. Hell i am a "HILLBILLY" and even i own (2) of them!! And get a (BENDER)!! You could have made that whole thing out of one single piece from the discharge line.. You can get access valves 5/16 and just cut it short for sturdiness. Just drill a hole and braze.. Much stronger and less chances for leaks that having (NUMEROUS) couplers, etc..