2 Bad Compressors In Weeks WHY? Freezer Down

Рет қаралды 14,696

Ай бұрын

Walk-in freezer has had two compressors fail in less than a couple weeks. I was sent to find out what is happening. Lets look it over and see if I can determine the root cause of the failures. They say compressors don't just fail, they are murdered!
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Пікірлер: 139

@Brooks.Mechanical.Electric Ай бұрын

No matter what your friends and your wife and your therapist say, there's nothing wrong with watching a few hours of HVAC R service videos to help you unwind after a 70 hour week of service calls! Ok fine, so you don't actually have any friends, buts there's still nothing wrong with it! 😂

@HVACRSurvival Ай бұрын

No, we usually only have a few True good friends and a shit ton of acquaintances and coworkers. Take care of your really close friends. Don’t worry about the other ones. I would say you probably care about your work more than others do, look how picky I am about stuff, I don’t want to be like that. I wish I could just not care but every time I try, I end up changing it the way I should’ve done it to begin with before I Leave 🤦😂 we just care about what we do and want to do the best we can. It shows when we’re watching other people to see what information or tricks we can pick up, I’m not saying I’m all that but I’ve learned a lot from others.

@EndrChe Ай бұрын

@@HVACRSurvivalWe say we wish we didn’t care, but there’s always that making sense of pride…

@Paul-IE-Repairs Ай бұрын

@@HVACRSurvival agreed we are our own worst enemy's James 1:4 "But let perseverance do its complete work; so that you may be complete and whole, lacking in nothing."

@HVACRSurvival Ай бұрын

Agreed 👍

@HVACRSurvival Ай бұрын

@Paul amen brother.

@786otto Ай бұрын

You also have clueless like me watching 😂 Just enjoying how well you can fix things.

@HVACRSurvival Ай бұрын

I watch things I don’t know about, it’s all good 👍 😊😊

@marknaravas318 Ай бұрын

Rick, I watch a bunch of these hvac channels and you have the deepest, hardest, most incredibly screwed up stuff to work on. Definitely one of the best techs out there to get this nuclear POS running.

@HVACRSurvival Ай бұрын

Thanks for the kind words of support 👍👍

@fshn76 Ай бұрын

Good video! You weren’t kidding about the problems. Can’t complain about 11° at the end. Probably the best it’s ran in years.

@HVACRSurvival Ай бұрын

Hard to say. Hopefully it stays running

@jasonjohnsonHVAC Ай бұрын

Very nicely done Rick.....basically performed a start up type repair. Everything but the kitchen sink.

@HVACRSurvival Ай бұрын

Pretty much!

@commenter5469 Ай бұрын

Well Rick - that was super rookie mistake, about that suction filter! You knew better!

@HVACRSurvival Ай бұрын

I didn’t want to heat up the reversing valve.

@sherwinalvarez7365 Ай бұрын

Idk kind of close to the 3way valve

@HVACRSurvival Ай бұрын

I took the chance, but I cheated and cut it out 🤫😎 a pipe cutter didn’t fit. I keep pipe brushes in my torch kit to clean out shavings if they get in there. At that point they system was a miss what am I out.

@commenter5469 Ай бұрын

I carry fire blanket with me. Saved me many times. You can even get something like that from Harbor freight welding section. Also I carry old license plates and pieces of aluminum flushing for the same purpose.

@JesseDoesHVAC Ай бұрын

So im not the only one! Ive had issues with my 557s not zeroing out pressures leaving like 14psi reading when zeroing pressures lol even the wireless probes have been doing the same thing

@frankmesias1949 11 күн бұрын

The way you explain everything.. thank you so much

@HVACRSurvival 10 күн бұрын

Thank you, I hope to prevent dumb things like this from happening but that only works if the person wants to learn from there mistakes. This person might never see the video 🤷‍♂️🤔

@throttlebottle5906 29 күн бұрын

one of those days where your super prepared for the job... 🤣🤣 nothing right, out of everything, SHTF to the end. lol

@stephenbullock-yn3vh Ай бұрын

Great work 👍

@Ted_E_Bear Ай бұрын

Rick , I think you are a great tech , so intelligent!

@stevencossaboon3237 Ай бұрын

Nice job Rick.

@FPHA697 Ай бұрын

Great job brother! Do what you can is all you can do!

@markjohnson9964 Ай бұрын

You do awesome work

@duaneimlay5680 19 күн бұрын

Good video, good walk through of you thought process

@HVACRSurvival 17 күн бұрын

Glad you liked it! Thanks for your feedback!

@thesilentonevictor Ай бұрын

Rick saved the day again

@DW-bo3qw Ай бұрын

Gotta love those Mac units

@DW-bo3qw Ай бұрын

Also I believe those units come with sporlan csg driers factory installed I don’t believe you need a bi flow drier for this unit

@HVACRSurvival Ай бұрын

It’s the same design as a heat pump

@terryh8421 Ай бұрын

Well done Rick, good work!

@HVACRSurvival Ай бұрын

Thanks for watching

@Gcanno Ай бұрын

Thank you.

@HVACRSurvival Ай бұрын

You're welcome!

@elparmful Ай бұрын

Was that an overnight vacuum?

@HVACRSurvival Ай бұрын

Yes

@Youngbl33zy Ай бұрын

2 day vacuum. Charged the customer 48h x $110h for the vacuum pump working. $5,280 in labor 😛

@commenter5469 Ай бұрын

I work in lots of heavy equipment A/C systems. I use Oil eater to wash the coils ( mostly condensers, but some evap. also) - was thinking about maybe doing experimenting and washing the coils with that on stationary coils, to do less damage. The non bubbling dish detergents might be a good idea also.

@eastcoast186 26 күн бұрын

Thanks for the video

@HVACRSurvival 25 күн бұрын

No problem!

@johnwalker890 Ай бұрын

Good job Rick......

@HVACRSurvival Ай бұрын

Thanks John! Have a good weekend!

@vornelas82 Ай бұрын

That was a fun video to watch. Thanks 🙏

@HVACRSurvival Ай бұрын

Glad you enjoyed it! Thank you for reaching out! Your feedback it’s important!

@subcoolHVAC Ай бұрын

11 degrees and out 👍 Thanks for the video!

@HVACRSurvival Ай бұрын

Thanks for watching!

@LilyRoseElectric Ай бұрын

Great 🎉job 👏 amazing 👏 craftsmanship ...proud of you

@HVACRSurvival Ай бұрын

Thank you very much!

@wd8557 Ай бұрын

I would have rather done what you did than to trace down a leak. Another great video.

@HVACRSurvival Ай бұрын

Great point! But I did that to. 🤣

@zwspiller7888 Ай бұрын

Need Mike Rowe for this one! Great video as always Rick!

@HVACRSurvival Ай бұрын

Thank you very much!

@lavina58 Ай бұрын

Nice video. Great job 🙌👍😊👌🍀

@HVACRSurvival Ай бұрын

🙏👍👍

@user-ge5le4ku6j Ай бұрын

like your workmanship. i miss r11 to flush the system.

@HVACRSurvival Ай бұрын

Thanks! 👍

@ErickHernandez93 Ай бұрын

Gotta remember if its a freezer superheat is to be checked once box is at least at 0°f brother U did all u could man, outstanding 🙌

@ErickHernandez93 Ай бұрын

You know evap superheat 4-8°f and compressor between 20-30°f is a happy place but its even tolerable up to 48°f is it’s in harsh equipment with neglected maintenance equipment

@ErickHernandez93 Ай бұрын

As always! Killing Rick! 🙏

@HVACRSurvival Ай бұрын

I learned not to touch super heat until 5* from set point, or you’ll be doing it again because it will flood when at temp. The one saving Grace was it had liquid injection, but I don’t know if it was even working correctly. It probably was gummed up with shit. I couldn’t feel any temperature changes. I should’ve used my thermal imager, but I was doing a lot of other things that I didn’t show, one of them was the dam bees.

@atch_n_sons Ай бұрын

Keep setting that bar Rick. WWRD

@HVACRSurvival Ай бұрын

Hardly 😂. But thank you!

@sherwinalvarez7365 Ай бұрын

You're awesome too Rick.

@HVACRSurvival Ай бұрын

You’re too kind, thanks for watching!

@ronaldclark8187 29 күн бұрын

Good video. Really dirty system. Ya had to clean up someones previous changeout. That HP drop was significant.

@HVACRSurvival 28 күн бұрын

Yep doing another one today 😩

@halverde6373 Ай бұрын

Freezers need suction accumulators. I never sold a low temp condenser without one. Or a medium temp. Guess what, never had a compressor wash itself out. That's why you had a lot of oil in the high side too.

@HVACRSurvival Ай бұрын

I don’t like the whole design. It’s absolutely idiotic to put two different systems on one breaker so when the one system trips, it takes out the other not to mention you tie yourself up with one condenser coil. The whole design is crap.

@brnmcc01 Ай бұрын

A lot of oil in the high side can be from the system being low on refrigerant, like when that cap tube line blew, and then the pressure switch set very wrong, the compressor wasn't shutting off. When the compressor is running in a vacuum, and there's not enough gas flow velocity in the low side of the system, there's not enough to push the oil back up from the box up to the roof.

@EverythingHVACR Ай бұрын

Nice job, Rick! You got shit meter leads 😅

@HVACRSurvival Ай бұрын

Wtf ever. Them are the best I’ve ever had and they’re made in the USA

@EverythingHVACR Ай бұрын

@@HVACRSurvival 😆 you said it. Had me laughing.

@HVACRSurvival Ай бұрын

I got it now 🤦 I’m slow sometimes

@brnmcc01 Ай бұрын

That was pretty good, your suction line temp showed around 37 degrees. Basically for a low temp unit, I don't worry too much about the superheat while it's pulling down, but a low temp compressor doesn't like return gas above 40 degrees F. You were well below 40, so I think it'll live plus it has the airflow of the condenser fans over it.

@HVACRSurvival Ай бұрын

Thanks for the tips!👍👍

@pattyPIMPIN Ай бұрын

Those Masterbilt MAC units suck, I would have replaced that DTC as well

@HVACRSurvival Ай бұрын

I had another composure on a Mac unit go bad today. I’m ordering the liquid injection valve.

@calebburns4346 Ай бұрын

I learned with my testo probes that i have to periodically take them off and make sure there still reading zero. Had a intellagen freezer not long ago that i was checking the suction transducer and almost called it a bad suction transducer, until i took my probe off and found that even though i Zero'd it prior it was at -7 open to atmosphere. Zero'd again and then i was reading the same as the board.

@HVACRSurvival Ай бұрын

I was setting up a freezer super heat two weeks ago and it was zeroed out before I went in there and when I got done, I thought it was set then rechecked it and it was completely off. I don’t believe these are compensated like they claim. At least not on the probes. They’re too cheap to be able to be that. When I got out my 557 it worked just fine so I don’t 100% trust the probes. Like you said though they really need zero out in the ambient temperature they’re gonna be operating in after they’ve stabilized in temperature.

@brnmcc01 Ай бұрын

@@HVACRSurvival I like my new(ish) Fieldpiece Sman's, they are more bulky than the Testo, but this newer one seems to hold a zero pretty good. That was annoying with my older fieldpiece, I could zero it out, and then after like 5-10 minutes I would have to zero it again. Was so frustrating to always remember to turn on the gauges right away before even taking them off the truck, to allow enough time for them to "warm up" and stop drifting. I think the one I have now is the SMAN 380v, not 100% sure tho.

@elBusDriverKC Ай бұрын

How many hours did this job take? I mostly do commercial rooftop compressor replacements. Between driving to the site, unloading all my equipment, getting in the building, getting to the ladder, climbing the ladder to the roof, hauling all tools to the roof including the new compressor, then doing the compressor job itself can take 8+ hours. Then when you throw in problems like you had in this video, the clock keeps running. I can only imagine this took a few days to get back in working order.

@HVACRSurvival Ай бұрын

Because I had to come back and this job was over an hour away I had two full days in it. Normally, it would not take that long, but there was way too much moisture to let it go.

@ayoutubewatcher7009 5 күн бұрын

That’s a 3 day job for me

@Josh.SPublishingTeam2024 Ай бұрын

Great video rick & job, nice troubleshooting, did you work on this equipment a few months ago, because it looks familar, i think this unit was a hussman, damm the compressor was loud at first but it shut off, the noise.

@HVACRSurvival Ай бұрын

No, I worked on one of their other stores. They have several so they have the same equipment and every building is the same.

@Josh.SPublishingTeam2024 Ай бұрын

@@HVACRSurvival or ok, because at the end of the video i noticed it was a masterbuilt

@commenter5469 Ай бұрын

That sight glass was burned upon brazing.

@dmiestercommkitchentech3043 Ай бұрын

Yea and without nitrogen purge

@BLUE_COLLAR_REFER Ай бұрын

What a Big ol McKnightmare

@zekenzy6486 Ай бұрын

Great video. Thank you for sharing. Have a nice weekend. May I ask, why freezer use 3 way reversing valve heat pump ? and for freezer, which high , low pressure , Super heat, subcooling number is good ?

@Boraxo Ай бұрын

Defrost?

@HVACRSurvival Ай бұрын

The reversing valve is used to melt the frost from the evaporator coil. Just like a heat-pump defrosts.

@ironon3257 5 күн бұрын

Hello my friend What cause making a compressor run reverse? Please Can you tell me more about this situation? Thank you

@HVACRSurvival 4 күн бұрын

If it doesn’t have a capacitor it can be reversed phasing. If it does have a capacitor, the capacitor could be wired incorrect causing it to go in reverse

@jonnymac31 Ай бұрын

Cool man

@HVACRSurvival Ай бұрын

✌️ hey John!

@dougking7592 Ай бұрын

Nice video for not intending to be, site glass looked way better brother

@HVACRSurvival Ай бұрын

Thanks. I’m updating my stock on Monday

@PS3PS3PS3PS3 29 күн бұрын

This customer must have deep pockets! How much time did it take you to do all of this and are you running other calls on these days?? I average 12-14 hours a day running 5-8 calls while adding more Work orders cause theres always something else broken 😅 ( I do hot side and beverage machines too btw)

@HVACRSurvival 28 күн бұрын

I normally run 4-6 calls if they are easy.

@HardKnocks101 Ай бұрын

Walgreens

@SeanMackBuffaloStyle Ай бұрын

It was probably short cycling during hot gas defrost....I've found a few systems overcharged going off on high pressure safety during defrost....masterbilt only opens the eev 50 percent in hot gas defrost and can't be reprogrammed

@HVACRSurvival Ай бұрын

That’s crazy but since there’s no TXV outside is likely why.

@Thermoelectric7 Ай бұрын

It's not hot gas defrost, it's reverse cycle. Flips the evap and condenser around like a typical heatpump. Would be interesting to see what it's doing for metering, might just check around the EEV and go through a fixed orifice or something. Can't imagine that'd cause short cycling, as you get plenty of heat from the "condenser" to keep the pressure up

@HVACRSurvival Ай бұрын

You’re probably on the right track, there’s so many things I would’ve done differently. I didn’t go into all the details of how much stuff was screwed up. I should’ve put out a timeline, but there was a lot of half ass hackery going on and stuff was being done in the rain storms.

@SeanMackBuffaloStyle Ай бұрын

@Thermoelectric7 the Evaporator fans don't run in reverse cycle like a heat pump, your not condensing, just robbing heat. That sounds like hot gas defrost to me. Short cycling on high pressure safety during defrost. If you restrict the Eev to 50 percent in defrost, your charge has to be perfect with no receiver.

@Thermoelectric7 Ай бұрын

@SeanMackBuffaloStyle the reversing valve is what makes it reverse cycle, not hot gas. Hot gas defrost just dumps the discharge line past the expansion valve. Reversing valve swaps the evap and condenser. Hot gas would have 3 pipes going to the evap. Reverse cycle only needs two. It will 100% be condensing in the evaporator when in defrost. You don't need the evap fans running when it's a block of ice. All that discharge gas will condense as it melts the ice and warms the coil up. At which point it passes backwards through the metering device, into the condenser on the roof, evaporates, and is recompressed. Reverse cycle defrost pulls heat from the condenser on the roof and environment to defrost. Hot gas just uses the heat from the compressor. Massive difference. It'll never trip on HP in a reverse cycle defrost, unless the termination isn't working right, at which point your scenario would be right and it would run high head as there's no more ice in the coil to melt.

@crxshed 25 күн бұрын

I have to ask if any of you guys have a good aluminium foil to wrap on armaflex to protect from uv?

@lincolnhunt9558 Ай бұрын

never heard of a 4 way reversing valve on a walk in cooler or freezer. Does the outdoor coil have a separate metering device for the defrost cycle?

@HVACRSurvival Ай бұрын

Nope. But the EXV only opens 50% from what I’ve read in the comments.

@brnmcc01 Ай бұрын

@@HVACRSurvival Yeah, that's to provide some restriction to build up pressure to provide some heat in the coil. I don't like those kind of systems, the problem is, in the winter on a cold windy day, you get about one good blast of hot gas, then the heat is gone, and even then, you still need electric heaters for the drain pan and drain line, so it's a waste. I have only used electric defrost since the late 1990's. Last one that I worked on, they were using a Bryant 4 ton heat pump for a condensing unit with 2 Larkin evaporators and a receiver remote mounted on the roof beside the unit. Was a real shitshow to get that working correctly. It wasn't a freezer per se, it was a meat cooler, with box temp control set to 30 cut in, 28 cut out. Even though that's not a freezer, anytime you have a desired box temp of less than 35, you can't use off cycle air defrost anymore.

@zunar_j5_933 Ай бұрын

Did a compressor initially burn out and contaminate the system and was never flushed out? Then subsequent compressors got wrecked? Edit: never mind, bet it was the pressure switch config if das shaft was broken.

@HVACRSurvival Ай бұрын

First they replaced the reversing valve then a short time later the pressure switch broke and dumped the charge. Then the pressure switch was replaced and I believe they set it up incorrectly, then the discharge line cracked and dumped the charge again, they repaired that then the compressor burned out shortly after that, then they replace the compressor and it snapped off the shaft a couple weeks after that. because the guy that replaced the compressor didn’t check the pressure switch, I believe it short cycled until it broke.

@zunar_j5_933 Ай бұрын

@@HVACRSurvival man…what a cluster! Well done on the fix!

@phxrus Ай бұрын

Acid away with every compressor change

@HVACRSurvival Ай бұрын

I debated using it. I’ve used it in the past and never had a problem.

@promisel1964 Ай бұрын

you can only polish it so much

@PhilJackZen 23 күн бұрын

Why not flush the system?

@HVACRSurvival 22 күн бұрын

Works it works good for line sets, but not so much for the condenser or evaporator coil.

@edwardgaddis8333 Ай бұрын

Good Ole Mac units. I hatem!

@HVACRSurvival Ай бұрын

Shit dressing with special sauce. Just throw two True condenser units up there with regular Txv’s and call it a day… when these things get old they waste more money on maintaining and repairing them than what they saved by putting them in to begin with.

@edwardgaddis8333 Ай бұрын

@HVACRSurvival brother you're preaching to the choir. I've stood on the roof with a ops manager and asked why, his answer it's what McD wants. When I knew he was doing a remodel I asked don't use a Mac unit and if you must make it Heat Craft. He ends up putting in RPG/Master Junk. Some bean counter made this decision with in McD Corp and it stuck. If they used standard I could just run to a local vendor and boom fixed on the day but oh nooooooo....so a control board goes bad walk in down well guess what call a refrigerated truck out because the board need maybe 48 hrs to get here. Dumb!!!! Rant over lol

@Menik559 Ай бұрын

How long have you been in the trade?

@HVACRSurvival Ай бұрын

1995

@daleborg9070 Ай бұрын

@@HVACRSurvival That is about the time I got out of the trade because of injuries. Did a lot of work for that company you were servicing.

@HVACRSurvival Ай бұрын

The store have their own maintenance guys, which they still do, but just like us they can’t find good qualified people so they only have a few guys now and now they us to take care of their several stores which are all spread out over Ohio.