Walk In Freezer Warm Since Yesterday!?
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- Äas pĆidĂĄn 9. 07. 2024
- Walk-in freezer had gone into an alarm yesterday and I was there to find out why. Let's look for what could have caused it and fix it!
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#hvacrsurvival #hvaclife #hvacservice #hvacr #refrigeration #troubleshooting
00:00 Tru Tech Tools
00:13 Todays Call is a warm freezer
01:04 refrigerant leak search with the Inficon stratus
01:36 Emerson e2 controller history
02:33 first large refrigerant leak
04:02 finding residual leaks up high
04:51 still leaking after tightening the refrigerant cap
05:20 changing the refrigerate Schrader core
05:58 Knipex plyers wrench
07:01 testo digital wireless refrigerant scale
09:20 remove from defrost
10:31 found another refrigerant leak
12:42 navac NEF6LM automatic flare tool
13:50 how to properly flare a fitting
15:56 no valves to use a vacuum pump this is the only choice
20:03 final leak checking
21:23 looking high and low for additional refrigerant leaks
21:34 change the refrigerant drier anyway
23:48 final checks on the E2 controller - ZĂĄbava
Exemplary thoroughness. Thanks for your example and for the effort to educate.
Glad it was helpful!
When you removed the schrader cap I could hear hissing each time. Nice find.
You have better ears than me, wear your hearing protection if you want to keep it. (I have ringing all the time and testing shows I have lost a little hearing. )
Should have pulled the charge, R404A is a zeotropic blend and may not perform as well as with a virgin charge of R404A. This means that the mixture of gases in the refrigerant will boil off at different rates so when a leak happens one or more of the blend will leak out before the other resulting in a system that does not perform well.
That was a concern in the beginning but hasn't panned out from what I have experienced. I have had that happen with R410a, but not with any of the other blends.
Top notch service. I hope you are paid well. Your attention to detail is exemplary.
I get paid better here than I have any place at work. Thanks for the support !đ€đ€đđ
Interesting video. Thank you. Iâm impressed by the craftsmanship of the pipe work by the installer. Actually the whole facility looked top notch.
They work for the store but he sold his business to them. They do nice work.
@@HVACRSurvival i wonder how is the battery life in this updated version of testos cause first gen eat batteries like thereâs no tomorrow
Don-I believe they are good so far, I don't leave them on all the time but I can get two or more months out of the batteries. I actually think I've gotten 4-6 months. But I use the 5 min was auto off.
I love how you said you see how those are flat đ
Awww that sweet E2
Yep, I like that better then the Danfoss I seen.
My favourite compressor is frascolds as they can take a lot of stick and are suction cooled not fan cooled like prescold and Copeland's
Plus frascolds are a bit cheaper than the makes of semi hermetics but I've worked on all makes of compressors tbf in my lifetime
Now we know why sight glass is yellow. There was no pressure on half inch line so guarantee air in system now. You pumped down using king valve, could have easily pulled vacuum using suction schrader.
The moisture indicator was like that prior to me getting there and I didn't pump it into a negative prior to repairing it so I disagree. I changed the drier and purged the line after the repair, there's not much more you can do to dry up the system other than keep changing driers.
I love the Stratus. Thanks again for answering all my questions about it.
Another great job at being precise, using the E2 to let you know the issue and implementing a proper repair
I'm glad you like it man! Thanks for the feedback!
To get it out of defrost faster, you can select "clean" then "end manuel mode"..goes right back into refrigeration
I've never tried using that? I'll see if that's an option on the ones we use. Thanks for the info! đđ
Our old hands , wrist and tendons I really love all these new NAVAC swage and flare and the Milwaukee battery powered tubing cutter of course Purchased at True Tech Tools đ
Can you explain a little bit more on how you didnt vacum that part of the system? I didnt completly understand. Thanks.
Next time when you unhook your gauges watch for refrigerant to boil off from your hose. You'll see what I'm talking about, hold it up to a bright background and look through the distortion from the refrigerant.
End of the field piece of equipment I know you might prefer the stuff that you use but try it out and I bet you it will change everything
Thatâs a good find, since itâs not a rack system Iâd agree on the shrader valve being the leak in the system, if it was a rack Iâd definitely suggest a more thorough leak search
I totally agree with you a lot of little buckets can carry out more than one very large bucket.. you did a great job! You went far above and beyond going up that ladder. Be careful and remember you are a Craftsman everybody should be proud of you.
You're too kind! Thank you for all your support!
Really good videos, and i like the fact you do not replace parts that were not needed that were not in the quote.
Thanks! I enjoy the hunt for the real problemđđ
by the way : no vac = Super Tech badge pulled Sir ! And I'd like to speak to the manager please ( I couldn't find a Karen emoji though...).
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Quality video. Making it look easy.
You're the man Rick!
Good job as usual and good vid Sir ... Thx for sharing ...
Great work finding the leak
Nice work
Great looking refrigeration install. Don`t see that to much any more. And they know how to use a bender to eliminate joints when possible. Today all ya see are line sets that generally look like crap. If you noticed your leaks except for the flair was in valves and schraders . Perhaps the manufacturers need to step it up a bit. Nothing like having valves to isolate system components. Great job on your patience to keep checking for those nasty leaks
Thanks for the support!
Your getting comfortable with refrigeration system from last year that flaring tool is awesome l wish l had tool when l was in a service van.
I am getting better in the grocery stores, but I still don't have all the answers for stuff I haven't worked on yet.
Excellent job đđđ
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Just an idea ... Do like acservicetech take the brass caps drill a small hole in center put on shrader and you can apply the bubble solution to the tip of cap at hole and not fill shrader hole! Lol just sharing! Good work! Stay safe! đđ
Thanks for sharing!
Good job bro. Good to see youâre still making videos.
Thanks Rookie! I hope you're doing well my man!
Nice video I been in refrigeration for a year now and Iâm still learning
Awesome, it's a great career choiceđđ
Love that leak detector
I've been impressed, I did a lot of testing prior to switching to it.
Great job man!
Thanks for checking it out!
Nice job Rick!
Thanks Steve, dang computer crashed and couldn't get it to reload my editing software until late yesterdayđ€Šđ». It's still locking upđ©
very thorough leak search, nice work đ€
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Awesome video again. Thanks for posting and I will definitely use your code for True Tech Tools next time.
Thanks man! Have a great week!
Nice
That flaring tool is awesome! I may have to look for one at some point! Great work as usual!
It's not cheap but if you do a lot of mini splits or flare fittings it definitely can save you time.
@@HVACRSurvival I donât to a ton of them, but I do love tools that make my job easier!
đđȘâïžđșđž Nice work đ
We have the navac at work best tool we own so much more efficient than hand flaring
I agree
Had a handful of Schraders go bad on me lately, and the stems were bent and would get caught on the access fitting, I had to install swivel tees in some cases where I couldn't get some out. Don't know why they'd become bent outta shape like that but it happens, oh and loose packing nuts ahd bad flares.. I started using these blue caps you put inside flares, seem to work pretty well still use nylog on the rim and threads though.
Thanks for sharingđđ
@@HVACRSurvival sure thing, I've only been on the field about a couple years now since I transitioned from ammonia, so your videos are super informative for me at this point. I recognize a lot of the equipment you work on so its much appreciated.
Awesome to hear! Thanks!
That's a fancy flaring đ§ tool đ§
It's fast and almost error free. I don't do a lot of flares but I mainly wanted to show it to my company's install manager. Install has to many service calls for leaking flares.
Good job Rick, I guess that flare tool is worth the money.
If I was the business owner and had the call backs that I see happening, that tool is a wise investment to make the job as brain dead as possible to prevent callbacks.
I hear you.
I ask what type of compressor is that. Is it a scroll compressor?
That's a Copeland semi hermetic compressor. I don't remember exactly how many horse but it's probably 5 or 7.5
Nice work. Purge > vacuum all day.
I'll catch some crap about it I'm sure. But that's why I brought it up before they do and showed there wasn't a easy way to do it without adding a refer port.
Maybe I missed it but you were about to explain what the purpose of the fan on top of the compressor is for.
I butchered the wording so I cut it. Basically the compression ratio on a freezer compressor is a lot more than a cooler commodity, so the heads run hotter, the fan helps keep it cooler. Sometimes they will use direct liquid injection to help cool the head instead.
@@HVACRSurvival Thank you.
Awsome Job, Just got the Testo 557s Kit, Ill have to grab that scale next!
Any other good Testo tools I should grab?
That's the only new stuff I have from them. I like the Testo manifolds better but I like the Fieldpiece for my gas and static pressure gauges.
20:44 would a telescoping pole work? For a quick check?
You know I never thought of it...yeah you could do thatđđ. I would n need to have something on the truck that I could do that with. Maybe one of those things they use for light bulbs. It's not often that I have to search like that but there are times.
Why donât you use a fieldpiece scale
I tried working a deal out with Fieldpiece BUT there girl in marketing snubbed me so I'll try out the equipment Testo sends me. I have Fieldpiece stuff, some is great and some is junk, same with Testo. No-one make everything great...
That flaring tool is too bulky. No way I would buy something to take up more space than necessary in my van.
It's really more useful for people that are using it for a large multi head mini split install and installers that don't know how to make flares that end up leaking then casing a call back.
But the time you save on a large job with a lot of flares is worth it, IMHO
I'm surprised the computer haven't start an alarm as soon as the graph was changing
Watching HVACR videos and being an IT guy we graph everything. Drives me crazy they donât even have a basic graph like this one does. Let alone an alarm. The tech for the basics is not at all expensive. I think I saw one AC controller that worked like that only.
This Emerson controller is the industry standard for grocery stores, I'm not sure why they didn't tie this in next door to the main store network that is monitored.
I don't think it's on the network like the main store.
@@HVACRSurvival don't even need to be on the network a 3 light poles green orange red is enough. Orange you contact the technician, very simple
This was a remote building to the grocery store, they only use it for cooking and no customers are in it. So no one would even see the lights in that building. Just run a CAT5 cable over to our other real racks and tie it in
Perhaps the gasket has just given up over time due to heating and cooling of the unit cycling or vibrations.
That's about the only logical thing I can come up with.
You can drill a small hole in the end of a cap to test schrader ports. With small amount of bubble leak detector applied to the cap with a finder the it won't go into the port at all. Also for larger leaks you can use Nylog as a test liquid.
That's a good idea on the hole in the capđ€đ€đđ
194 thumbs up
Thanks Steve
I get on everything with my cobraâs and yea it leaves teeth marks but who cares to be honest?
I care đ€Łđ€Šđ», those weren't the cobra's, are you missing with me? đł
" insert tool company name here " : dumbing down the industry one electronic tool at a time ... Next step : Uber hvac coming to you !
cut out those allways leaking flare fiiting pooooor skills
Poor skills are why It was leaking. People just don't care anymore.