This was a very interesting call with a bad compressor that turned into an equipment replacement, we got the customer up and running and it all ended well.
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So we've got a complaint that a beer walking is not working correctly in here, there's no ice formation. The information it's somewhat cool in here, it's about 50 degrees thermostat - seems to be set weren't supposed to be, but we're not going to adjust anything we're not going to twist on the thermostat or anything like that, because we don't want to accidentally fix the problem without Being able to really realize what happens so we're going to go ahead and check on the roof and start up there. We know we have power. Are you an opera fan motors are running and it's somewhat cool in here.

So that's what we're gon na leave it and go jump up onto the room? Okay. So this is our beer, walk-in, so convincing unit interesting feels like the convention fan motors running and check that they don't see what we can do all right. So what we got going on here is, we have a somewhat warm compressor. I mean it's pretty warm condenser fan motors running and we need to check old pitch to see what kind of voltage we have going to this bad boy.

Okay. So what we've got here? We're going to go ahead and try to get on here and see what our voltage is right now, so we have two or three volts: there: 202 volts there two or three volts. So we have 208 volt 3-phase going to this compressor and it's not running so more than likely we're going to check to see if we're off on thermal overload. So we're going to turn off power to the disconnect and then we're going to verify powers off and then we're going to check resistance across all three poles of the compressor to each other to see if we have a resistance reading.

If we don't. That means that we're off on thermal overload. Okay, I don't know if you guys caught this. I just found a major flaw in this unit.

This compressor is 208 three-phase, as I'm disconnecting to comb out the terminals. Look at what we have here. We have a thermal overload that essentially, if it goes off on thermal overload, its single-phase is the compressor. That is a major design flaw.

You can't have a single-phase thermal overload. That's I'm dumbfounded right now on a three-phase compressor. It's just I don't even words. Don't even describe what the hell that's going on and that's Factory, okay, so we're testing continuity.

Now, across these windings I needed to change my battery but 3 ohms, three ohms forums, so we have continuity across all wine news and we have three phase power going to the compressor, so we have a bad compressor. This is also the new condensing that we installed not too long ago and a short cycling. So it sounds like the low pressure controls out of adjustment. Okay, so we confirmed again that we have three-phase power going there.

We do. I went ahead and reversed the phases to try to rock the compressor to break it, free, nothing and then I went ahead and knocked the compressor. So I can hear the motor inside move around just to see if I could break anything free, and I can so. This compressor is definitely bad.
Whether or not the customer wants us to change this tonight, we'll find out right now, but is what it is. This isn't our 22 system, so I don't know they're gon na want to put a compressor in this, but we will see all right. So what we did was temporarily. We just threw up a condensing unit.

Right now we came back recovered. The gas out of the old unit threw up a condensing unit. We just used a lift. I have an equipment, lift that can lift it all the way up on the top of the building lifted it up here and just set.

The condensing unit we're still going to come back and change the evaporator coil, because my TX V is actually going bad and I'll show you guys down there right now, but that's actually what caused more than likely the compressor to fail. So if you see we're gon na be abandoning that line set, so we just hooked up temporarily to it. We're gon na clean it up and it'll. Look like a good job like normal.

What we did was we actually marked. This is where my new line set is going to penetrate to go downstairs, so we'll do that when we come back to do the eval and then we'll abandon this old line set and get rid of it completely. Okay, so see my txb something wrong internally with it, I pulled the strainer, it's good. I wasn't going to change the valve because it's getting a bike for now we're just going to change everything tomorrow, so I pulled the strainer and I swapped the power head.

That's still, okay, so we're starting to prep the coil, we're gon na cut the distributor, nozzle or cut the distributor tube and then put the nozzle inside of it. You know! Well then, the expansion valve this is an unprepped coil install the solenoid valve solenoid valve. We made sure we're running on it's a it's sized correctly for the tonnage that we're running across it. I think we've got a 1.25 tons system or something like that.

So yeah we're plenty not too big, but not too small. On our tonnage. We've got a one area: 3/4 ton TXV and we're gon na go everything all sweat in and ready to go. This is a ten thousand four hundred BTU evaporator coil, just a little guy alright.

So we came back today and we went ahead and finished up the line set fixed that see the penetrations there. Now again, I'm not fancy with those roof jacks, because I usually tell him to get a roofer out to double-check all the work and do it. He wants to do to make it perfect because they always sent tend to leak when I do so, we'll have them get a roofer out went ahead and ran the line sit over there systems operating we're using our 4:48. A operating pressures, as you see, are so ridiculously similar to our r22.

So it's very very close. We click this. Yes, I see, so these pressures are so close to our 22. Now so, we've got a 75 degree.

Ambient we're running a clear sight. Glass. I've wait in the winter charge this particular condensing unit. They had in the pamphlet that came with it.
It had all the information about what the winter charge was. So it's right here model number the condensing unit. It's a six pound winter charge. It took eight pounds to clear the sight glass for a total of fourteen pounds for the total charge for the unit and the box.

Temp right now is 39 degrees, so it's still flooding a little bit because I just got the sensing bulb mounted. So we're not even going to adjust the superheat yeah, we're gon na come back, probably in a day or so let it run. But everything's. Looking good and like I've said before these Tecumseh condensed units are so nice everything's in it it's a little redundant because I did put a key to therm, 10 plus defrost controller, so this one's already wired in so I just left that and just turn the deep Bus off on the controller, but I love these things, they're just so nice such high quality fan cycle controls and it's actually pretty much cheaper to buy this unit rather than buying an indoor unit with a doghouse and all these components and put them all.

In this thing that it comes with everything you headmaster already on, you know super nice, so yeah, that's it we're just wrapping it up I'll show you guys. The foil right now see all closed up. These things are just so pretty looking super nice and here's our well still finishing up a few things. The drain is like a monstrosity for whatever reason: there's a p-trap right here, but we can't take it off right now, so we're going to cap it.

The reason why we can't take it off is because the locking freezes on the other side, so in order to get rid of this trap right here, we'd have to undo the walk-in freezer drain. So when we change that coil, which will come soon, we will fix all that. But we've got tape over the holes because we spray foamed so we'll come back and pull the tape and it will be perfect, obviously got a p-trap at the tape and our temps are bitchin 36 degrees right now set for 35. We're good to go.

We'll come back, like I said in a couple days in a day or so into a super, be checked, pretty sure we don't need to do anything cool, let's check it alright, so that was an interesting one. I'm still kind of tripped out about that external overload. On that compressor and I'm gon na actually cut that compressor apart, because I I can't believe that they would put a single phase protector on there. It makes me wonder if there's some kind of a like three-phase protection inside the compressor.

I mean I've never seen that before, but that's still tripping me out so I'll. You know try to film something. When I cut that compressor open cuz, I did save the unit and I want to see what's going on with that and also as you guys saw like, it was kind of weird that we had that that 4 ohm reading you know and then the 2 3 Ohm readings, so something was up inside there, but that just could have been why the compressor was bad, so anyways, that's it. So this was an interesting one because normally with this particular customer, they like to provide their own equipment, but this was an emergency situation, so they approved me to go ahead and put in my stuff.
So I you know right quick the next day the next morning through in that condensing unit and then came back. It was a couple days later came back and put in that evaporator coil and everything was working, good, gone back down the superheat check. Everything was good with that. No problems, customers happy so put that one down as being done, really appreciate you guys taking the time to watch these videos.

You know I'm super humbled by you guys and how many of you that there are that are actually watching these and commenting and it's really cool. So hopefully you guys get something out of this, whether it's just laughing at me or maybe you even learned something. I don't know, but I appreciate all you guys's comments and emails that you send me so catch you guys on the next one. Okay,.


47 thoughts on “Bad compressor on the beer walk in”
  1. Avataaar/Circle Created with python_avatars Joshua C. says:

    I'm surprised to see the condensing unit with BOTH a headmaster AND a fan cycle.

  2. Avataaar/Circle Created with python_avatars Ross Kious says:

    If the thermal overload ran back to the contactor I would understand it, but dropping out 1 phase is crazy.

  3. Avataaar/Circle Created with python_avatars inothome says:

    There's no way that thermal overload came from the factory like that. If it was mounted on the compressor then it most definitely was meant to be in the contactor control circuit and someone else rewired it that way thinking they knew better. We all know engineers come up with some shit ass designs, but none are that bad to put a thermal on one phase of a three phase motor / compressor.

  4. Avataaar/Circle Created with python_avatars Bert Bergers says:

    The single phase overlaod is fine, the producer of the unit should have used the overload as an interrupt switch on the compressor contactor coilfeed. Not in series with one of the phases. So design flaw on the unit producer, not the compressor producer.

  5. Avataaar/Circle Created with python_avatars MrJohnisthename says:

    We had a 12 or so foot coffin freezer for ice cream at the 4 aisle 2 check stand mom n pop grocery store where I worked as a butcher far as I know it had the same compressor running it for 33 years til one day it just up n quit on us.

  6. Avataaar/Circle Created with python_avatars Arnþór Gíslason says:

    did you ever find the time to tear that compressor apart?

  7. Avataaar/Circle Created with python_avatars Joseph M Orost says:

    Funny you’re there to work on the left unit and the right one starts short-cycling

  8. Avataaar/Circle Created with python_avatars Walton Martin says:

    V Are you in Barrhaven ?

  9. Avataaar/Circle Created with python_avatars Darek Cieslik says:

    Looks very nice . I like watching your videos that tecumseh unit looks nice I used Trenton units .

  10. Avataaar/Circle Created with python_avatars Magi Obiwan says:

    Are there any issues if you use a new R448a compressor and condenser with an old evaporator that was used with R22? Does the evaporator need to be designed to use a specific refrigerant? Do you need to purge the lines thoroughly before you hook up the new compressor?

  11. Avataaar/Circle Created with python_avatars Ray Nulife says:

    The overtemp safety switch on the 3 phase supply should have been wired into the motors control circuit so the load on that switch would be minimal and the motor would be discontinued without any problems, the overtemp switch could be in the over presumed circuit or the feed to the contactor 🤔

  12. Avataaar/Circle Created with python_avatars Ray Nulife says:

    Would they have been better using the over temp to switch the compressors feed off?

  13. Avataaar/Circle Created with python_avatars Ronald Zeigler says:

    Laughing at how good you are Service area Nepean??

  14. Avataaar/Circle Created with python_avatars Ronald Zeigler says:

    I have seen a compressor like that before WILD

  15. Avataaar/Circle Created with python_avatars Ronald Zeigler says:

    Love Larkin

  16. Avataaar/Circle Created with python_avatars Shlomo Attia says:

    how did you lift the new condensing unit up to the roof?
    did you use Crane? , Do you have lifting tools for roof Jobs?
    thank you for your videos.

  17. Avataaar/Circle Created with python_avatars Versace Cooks says:

    You don't know how much I appreciate your videos 👌

  18. Avataaar/Circle Created with python_avatars guillermo de la barreda says:

    Can you do a video of your super heat guide?

  19. Avataaar/Circle Created with python_avatars dt 34 says:

    That drain trap is there because the freezer will pull the cooler air thru the drain line.. one call I had before was freezer w/I looked foggy in box. Found freezer coil pulling warmer air in and causing that. I know its rare but after we put a trap on cooler side it fixed the issue. Great video.

  20. Avataaar/Circle Created with python_avatars chandarasena says:

    Thank you very much , I learned a lot from your videos, thanks for posted. I subscribed your channel and watch many times for some videos. Could you please post more videos shows on how to charge refrigerant for walk in systems..

  21. Avataaar/Circle Created with python_avatars Alex Lavoie says:

    I'm not even a HVACR tech but i love watching your videos. I work on automotive HVAC system, but that's so different. Keep on the good work! Service area Barrhaven??

  22. Avataaar/Circle Created with python_avatars Tommy Mason says:

    Big Bro? Did you ever cut open that compressor on this call? Service area Kanata??

  23. Avataaar/Circle Created with python_avatars Sean Michael says:

    "Don't touch anything without a reasonable cause," the first thing I tell dudes around me that don't know about package units. Its common for dudes to shut off disconnects or push in contactors before they even know which unit is the problem… Its amazing there are people like that out there with refrigeration jobs Service area Ottawa??

  24. Avataaar/Circle Created with python_avatars brandon says:

    P-trap should stay on the freezer drain line. Are you in Ottawa ?

  25. Avataaar/Circle Created with python_avatars David Poole says:

    Hey buddy! Just wanna say that I love the videos. Lots of good content and situations that I dont normally see on the residential side. I was curious after watching a few videos if you charge with superheat and subcooling? I constantly hear you say "i filled till the sight glass was clear". Im not saying that doesnt work. Im just curious if you ever charge with other methods.

    Like this video for exsample, you did a compressor change out as well as noticing a likely TXV clog. A check of subcooling (assuming your condenser fins were clear) would have suggested a clogged metering device or filter dryer. Agian, with you needing to change the evap coil, it didnt really matter either way. Do you braze with nitrogen as well?

    Your really thorough with your work and i appreciate your workmanship. If the industry was full of guys like you, we would be much better off. Keep making great videos man 👍👍

  26. Avataaar/Circle Created with python_avatars Octavio Delgado says:

    Great video.
    Thank you for sharing the good knowledge!
    👍

  27. Avataaar/Circle Created with python_avatars Kuran says:

    If there's resistance across all of your windings how is it bad? I thought only if you read "OL" on your ohm meter that means your winding is no good. Also, is it possible to just use your toner setting instead of your ohm reader to check for continuity?

  28. Avataaar/Circle Created with python_avatars Donnie Robertson says:

    Great job again like always

  29. Avataaar/Circle Created with python_avatars sunil poojary says:

    Nice video
    From india

  30. Avataaar/Circle Created with python_avatars MotoTenacity says:

    That’s funny you said tucumsey ( I should know how to spell it) is quality. On residential refrigerators the 04-05 Amanas the bearing seizes up during higher compressor temps. When I see that Indian head I just order a compressor by default 😂 Are you in Nepean ?

  31. Avataaar/Circle Created with python_avatars Rob H says:

    What was the total repair cost on that one?

  32. Avataaar/Circle Created with python_avatars Thomas Linehan says:

    Great work man, love watching your videos, i try to adapt your same mindset, keep it up bro

  33. Avataaar/Circle Created with python_avatars Shane Miller says:

    I’ve been doing supermarket refrigeration for 11 years and I do learn from these videos Are you in Orleans ?

  34. Avataaar/Circle Created with python_avatars TechnicalLee says:

    Wondering if the point of the thermal overload was to deliberately single phase the motor, causing the current to increase on the remaining two phases and trip the circuit protection? The current on the remaining two would jump to 173% of normal or more, which would hopefully trip the circuit protection assuming it was properly sized. Still, seems like a bad idea. Must have been a cost consideration.

  35. Avataaar/Circle Created with python_avatars nsboost says:

    Can you actually go TOO BIG on a solenoid?

  36. Avataaar/Circle Created with python_avatars Paul Deeter says:

    Chris did you grab beer after this service call lol

  37. Avataaar/Circle Created with python_avatars First Second says:

    I am aspiring HVAC technician and attending vocational school. Any tips for me when looking for jobs and what are the interview questions are likely to be for HVAC? Thank you!

  38. Avataaar/Circle Created with python_avatars David Vander Waal says:

    That short cycling was killing me

  39. Avataaar/Circle Created with python_avatars Luis Padilla says:

    Great video, well explained thanks

  40. Avataaar/Circle Created with python_avatars Kyle Lawhon says:

    I’ve had to many issues with the KE2 Therm controllers with defrost issues on freezers. So I don’t blame you for installing a mechanical time clock

  41. Avataaar/Circle Created with python_avatars Frank Mashione says:

    Do you have to worry about oil still in the evaporator when you put the new condenser on the roof ?

  42. Avataaar/Circle Created with python_avatars TJ says:

    Are you planning open a training course ? i will take it rightaway.

  43. Avataaar/Circle Created with python_avatars Mr. G says:

    Make a video of thermal overloads and how can they be wired and with what type of voltage. I usually work with 120v wall plug in refregerators and freezer. Traulsens and True.
    Thanks great videos.

  44. Avataaar/Circle Created with python_avatars AZhvacr says:

    Nice job! Once again 👍🏼🤘🏼🤙🏼

  45. Avataaar/Circle Created with python_avatars Sean Mack says:

    I didn't realize, but sporlan instructions say you cannot install a solenoid valve in vertical position. I saw the original Emerson solenoid in vertical position.

    That drain is a mess, they are causing water to back up in the freezer drain by putting a ptrap right there.

    Nice install, the Tecumseh units do look bitchin nice

  46. Avataaar/Circle Created with python_avatars Greg M says:

    Nice!

  47. Avataaar/Circle Created with python_avatars throttle bottle says:

    WARM BEER!!! PANIC PANIC PANIC PANIC PANIC………

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