WALK IN COOLER ICED UP
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- Опубликовано: 21 окт 2018
- This was a service call on a walk in cooler that was iced up, I found multiple problems with the system including a very dirty evaporator coil, and a refrigerant leak. Let me know what you think and please consider subscribing to my channel.
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May be a stupid question. What’s a headmaster do?
Ashton not a stupid question at all simply put a headmaster or head pressure regulating valve backs up the refrigerant in the condenser to raise the head pressure in the system on really cold days when there is not enough heat in the ambient air at the condenser. The reason we do this is when its really cold outside and your condenser has that cold air going across it it lowers your condensing temperature and while most people think that is a good thing if the condensing temp goes too low it starts to affect the performance of the expansion valve and that causes the system to not operate correctly. So by flooding the condenser the head master helps to maintain a constant liquid temperature of 100 degrees going to your expansion valve. If you have time watch my new livestream that i did as I talk about the headmaster a little more ruclips.net/video/lBpaoxAtSzw/видео.html
@@HVACRVIDEOS Great thanks for the info! Great channel too!
I live in Canada, headmasters play a big part on very cold days, some run fan fan cycling newer run headmasters, but listen to Chris, wicked smart dude
Headmaster is make keep head pressure above minimum level for refrigerant circulation.if headpressure is too low to push refrigerant through the expasion valve and then refrigerant will not enough to make cold air.
The headmaster is in charge of all the other masters! 😂
Thanks for the video been watching when you talk about filling the reciever and could not understand till this video
your videos help me learn/understand a lot more about refrigeration, thanks for helping me be a better tech
Great tip on checking the receiver to see how much it can hold when doing pump down. I didn’t know that part of that but now I understand why. Excellent information.
I like the way you used heat to find the level of liquid. Very clever way! Top man.
Recently stumbled upon this channel have no idea what I'm watching but I enjoy seeing a tradesman work at his craft so I subscribed 😁😁
Thanks bud!
When you have a frozen evaportator, the low preassure is lower. There's no need to add refrigerant, defrost it and check again. You will surprise, greetings from refrigeration mechanic from Argentina. Long live R-22!
Thanks for watching , yeah I didn't adjust the refrigerant charge unit after I defrosted the coil.
Of course you dont add more refrigerant to an iced up system. Would be funny after defrost ;)
I'm on the automotive side and have an electronics background so I guess I'm a bit of a techi kind of guy. After watching your videos it gave me a real good understanding of how these systems work. My brother had a faulty low pressure switch and the convenient thing was his cold room runs on r134a. I just recently purchased a testo 557 gauge set.
nice way to get by!! I did alot a reefer work in the past, even market stuff and restaurants, but now doing vrf and commercial ac repair and install, i miss the reefer work but get able to sidejob some reefer sometimes...
I bought the plantronics 5220 today. I’m really happy with it. Thanks for the advice and thanks for sharing.
Right on I'm glad I didn't give you bad advice! :-)
Nice job! Nice foot work around customers product! I know guys who would of emptied half the cooler and in the end it would of looked like they washed their car.
Just have to say that I recently got more into the refrigerator side of the trade. Watching your videos has been great. You do a very good job of explaining in detail little things. I live in Illinois around the St. Louis area or not far anyway. The next time I get to The Palm Springs area I would hope I could get the chance to shake your hand. Thanks bud keep up the good work.
Thanks for watching and thanks for the nice words, I'm actually in Riverside Ca. Palm springs is just one of my service areas.
Great professional work as always.
thanks for watching , I am going live on youtube tonight at 5:00pm pacific standard time come on over and check it out ruclips.net/video/lBpaoxAtSzw/видео.html
running a torch up and down the compressor to check refrigerant levels is new to me.
I will clarify this tonight on my livestream on youtube tonight at 5:00pm pacific standard time come on over and check it out ruclips.net/video/lBpaoxAtSzw/видео.html
Top notch work as always. 👍🏼
thanks for watching , I am going live on youtube tonight at 5:00pm pacific standard time come on over and check it out ruclips.net/video/lBpaoxAtSzw/видео.html
Great tip on checking the receiver level.
I am going live on youtube tonight at 5:00pm pacific standard time come on over and check it out ruclips.net/video/lBpaoxAtSzw/видео.html
Great tip on the heat gun trick...thanks
thanks for watching , I am going live on youtube tonight at 5:00pm pacific standard time come on over and check it out ruclips.net/video/lBpaoxAtSzw/видео.html
Great job
It looks like I have the same problem here at different store same company
Nice work Chris. The customer might be proactive about upgrading the equipment but they sure aren’t proactive with their PM schedules... that evap was filthy... lol, more work for us I guess. Thanks for the video.
yeah they really cut back on the Pm's in the last 5 years, anyways thanks for watching I am going live on youtube tonight at 5:00pm pacific standard time come on over and check it out ruclips.net/video/lBpaoxAtSzw/видео.html
Something I used to do with beer walkins. Put the temp controls bulb into the evaporator coil. That way the solenoid won't re energize until the coil goes above freezing. You need a temp control that has allot of differential so you can set cut out low enough to get proper box temp. The box temp will rise sometimes while it's defrosting but the beer usually stays cold enough ,not to be a problem. Boxes that get allot of new product at the same time have a tendency to freeze up trying to recover...this solves the problem. Defrost timers don't account for crazy swings in box demand.
thank for watching! I am going live on RUclips this evening 1/7/19 at 5:00pm pacific standard time to discuss my most recent uploads, come on over and check it out ruclips.net/video/UXpVzsY0gzc/видео.html
you got mad skills! nice fix
Thanks bud
Always excellent info. 👍🏼🤙🏼🤘🏼
Thanks bud
Great work Chris 😀
thanks for watching , I am going live on youtube tonight at 5:00pm pacific standard time come on over and check it out ruclips.net/video/lBpaoxAtSzw/видео.html
Cool vid. I’m a resi guy and dig seeing the other end
Thanks bud!
WOW 😮 Iceberg! Thanks
chris you are the best as always
thanks for watching, I am going live on youtube tonight at 5:00pm pacific standard time come on over and check it out ruclips.net/video/lBpaoxAtSzw/видео.html
Excellent video as usual
thanks for watching , I am going live on youtube tonight at 5:00pm pacific standard time come on over and check it out ruclips.net/video/lBpaoxAtSzw/видео.html
As a restaurant owner I'm starting to learn how to fix things myself or at least know enough to find a decent technician. Today I walked into my cooler and my refrigeration guy was defrosting with a torch. It's so hard to find decent service providers in this area. My hood vent has been working improperly for years and we were told "We don't know how this hoodvent works so if you want us to learn you're going to pay for our education" Sorry for venting. Thank you for the video.
No problem Collin, what brand is your hood system? Feel free to send me an email to HVACRVIDEOS@GMAIL.COM if you want, I'm really curious about your hood system
Nothing too complicated, as a entry level tech I would've fainted
Excellent job
thanks bud
Nice, right on top of food
Great job
Thanks
Bro I watch a lot of these guys on the tube to perfect my craft I gotta say no homo but ur A1.... grayfurnace, acservictech, David Jones Jim P gotta take notes n their vets I appreciate u n pay homage for ur knowledge rock on 🤘 hvac/r boyz 4life
Thanks brother for the love!! #nohomo!
Always a pleasure to watch your videos! What kind of coil cleaner/degreaser do you use? Thanks!
Another great video 👍👍👍
I am going live on youtube tonight at 5:00pm pacific standard time come on over and check it out ruclips.net/video/lBpaoxAtSzw/видео.html
Nice video
God bless you
Good job
thanks for watching
Catching up on the vids
Another great video. A couple questions, how long did this job take? And, the product in the walk in, does it stay cool long enough for you to finish up without spoiling? Thanks.
Chris you took your time, job done correctly, what would a reg service call like this be? I know some of the original call would be eaten, because of new equipment being installed.
Nice video,keep them coming..may i request you to pls make a video about evaporator TD’s,condenser TD’s on walk ins,and also superheats on these units..thanks
thanks for watching , I am going live on youtube tonight at 5:00pm pacific standard time come on over and check it out ruclips.net/video/lBpaoxAtSzw/видео.html
One more - would like to see an install of this system if you can.
Drip loop? Nice touch!
What type or brand of degreaser do you use? BTW, love your videos. They are very informative and thorough. Thank you!
I noticed the bottles on top shelf dissapear 😋
one of the first things i always do is mark the time clock soon as i get there.
Does the manager or you move the products that are underneath the evap when you go to do a service call such as that ? I can just imagine the surprise if the health inspector just happen to pop in unannounced 😲, with some of the open dairy products that was there, i.e. the open whip cream can and milk, as well as the alcohol products. Health concern? Just an observation. I would like to hear your take on that part involving food product safety concerns and the service techs responsibility in that situation. Thanks, Keep up the good work on your videos.
Loving your videos brother! Love how you're thorough with everything and really taking your time focusing on the task. I have to ask, for someone like myself who is about 6 months into running a HVAC business for myself, you seem to always be busy but take your time and relax. Do you get flooded with calls on a daily with service calls or are you steady that you allow the time for these jobs?
Unless you're working 18 hours a day, your jobs seem so time consuming 😂
I have 3 other trucks running calls and I typically have an apprentice working with me. When I am making a video I am training him at the same time. But remember I only release 2 videos a week so I'm not as busy as you think.
@@HVACRVIDEOS
Ahh makes sense, a little hard being a one man show and trying to juggle work while being thorough. Thanks for your videos, keeps me on my toes and gives me some new ideas. Keep it up brother, love from Australia 😂👊✌️
Thanks !
Thanks for watching, I will be going live this evening 3/25/19 @5:PM (pacific time) on RUclips to discuss my most recent uploads come on over and check it out if you can... ruclips.net/video/Bqx-RSJsidY/видео.html
Hey bro wat type of degreaser do you use to clean your coils
Do you mind explaining to me how your using the solenoid valve on there to pump down.?
2.And how can determine the size of the receiver valve.?
I have a question regarding the setup of the low pressure switch. I have it set for it to turn the compressor on at 5 psi and cuts off at 20 psi. This setup keeps the coldroom at 1 degree Celsius which is desired. Also having the differential setting the way it is, compressor isn't working as hard. Is setup ok?
If you had a maintenance contract with them, then certainly your guys would have seen the ice forming. So either they don't have a maintenance contract, or your maintenance program is not monthly... like quarterly? Do you present them with that option? How did this customer know to call you?
Are you upgrade on condenser only? That evaporator/unit did not look that bad.
Top-notch and thorough as usual. When you added the refrigerant to the receiver did you just start the compressor up while it was still pump down and suck in the refrigerant or did you start the system up and after adding more refrigerant, keep pumping it down to recheck it every so often.?
Rick I just added the gas to the low side while it was still pumped down, that way I didn't have to keep pumping it down I try to "work smart not hard" :-) thanks for watching bud. FYI I am probably going live on RUclips tonight to talk about the video
thanks for watching , I am going live on youtube tonight at 5:00pm pacific standard time come on over and check it out ruclips.net/video/lBpaoxAtSzw/видео.html
@@HVACRVIDEOS I've read about checking the receiver level this way. And I've tried it with my thermal imager while it's running and you can sometimes see the level. Generally after I clear the sight glass I'll try to calculate what the total charges was and add 10 or 15% which usually can be 3/4 to 1.5 lbs on these small units. The other thing I'll do while I'm pumping down is watch my head pressure and see if it starts Rising which can be an indication of running out of room in the reciever.
I have a walkin cooler and I get dirt in it even when cleaning it. Not sure where the dirt is coming from
How do you thaw evaps in a -20 freezer with a redundant system?
Do you work on any old hussman rack systems in grocery stores they are a real treat
I'm experiencing something similar in 3 walk in freezers at my job, however the ice is forming on the outer pipe entering the back of the evaporation coil fan box assembly??? Any idea if tgat could be 3 bad limit switches or is that even feasible?
that moment when he gives you a heart but no answer.
Good video thanks for sharing looks like i did all last week walkin mayhem ,? How are those Bluetooth probes can you recieve the signal inside the box from the condenser up on the roof (testo Bluetooth manifold cannot!!!)
yep they work all the way to the roof, the imanifold has better range but the fieldpiece job link probes are catching up
thanks for watching , I am going live on youtube tonight at 5:00pm pacific standard time come on over and check it out ruclips.net/video/lBpaoxAtSzw/видео.html
maybe this has been asked...but where did the dirt come from on the evap coil?
Is walk in cooler had defrost heater on it? Thanks
Could you explain the purpose of warming the receiver with the hot-gun? It's not enough to reclaim all the refrigerant in the receiver untill full pump-down? Aren't you in the full saturation liquid zone at such press/temp in R22?
Apologizes if I did not understand properly. Learning with you is a luxury :)
I am going live on youtube tonight at 5:00pm pacific standard time come on over and check it out ruclips.net/video/lBpaoxAtSzw/видео.html I will try and answer your questions
How would you check for a leak?
What Brand of Walk in Cooler do you recommend?
no more ice skating inside the freezer
Why would a low charge only be partial ice on coil?
👍
My walking coooler is ice up and temperature drops. Why is that
I have foggy in all walk-in cooler glass door.can I know what the problem is it please?
I run couple restaurants and I’ve used name branded refrigerators and lesser known brands. They will all have problems.
They don't teach this kind of stuff in school...
cause if you get out of school and get a job then spend 3 hours defrosting a small evap coil you wont have a job long
I have the the same fkng issue with a walk inn cooler I already made 3 stops and still ice up
What’s up bud ... have you tried your receiver test method with a thermal imager?
No I was looking at them on amazon but just didn't hit buy yet, I bought a bunch of podcast gear instead. So once the podcast gets going than maybe I'll pick one up
I just bit the bullet and ordered a thermal imager, it's only money right???
Well it is only money but don’t break your self.... they are pricey.
We are into fall and cooler temps I’ll have to give it a whirl my self.
I’d love to see you make a follow up video.
Yeah I didn't go crazy I bought the flir one pro for my phone, whether it works or not I will make a video to review it.
I have the first generation of that it works and should even let you take thermal video... it should do good... can’t wait to see the video ..
Why don't evap coils have air filters?
Is it ok to use coil cleaner inside the box ?
Yeah as long as the fumes don't build up its fine
Pluggo buggo
Very nice job
How long it take you to defrost and clean the evaporator ?
The entire job took about 3 hours
Sounds like a chili's........
I dont know what you are talking about ........ :-)
thanks for watching , I am going live on youtube tonight at 5:00pm pacific standard time come on over and check it out ruclips.net/video/lBpaoxAtSzw/видео.html
Sounds good...ill see what i can do. Already have a good topic in mind for discussion. Have a customer with a walk-in freezer "snowing" lol.....
Coil does not ice up, defrost working, holds temp well. Talking with him, they remodeled a room recently and someone had put a 1" hole through the wall into the freezee box. The snowing started the next day after they sealed it. Hes going to set up a day that we can shut it down, remove everything and do a clean out. Im thinking theres just too much humidity trapped inside
1/3 to 1/2 is adequate.
I am going to go live on RUclips tonight 11/5/18 at 5:00PM pacific time to discuss my most recent uploads and answer questions. Come on over and check it out
ruclips.net/video/JHpAuTzzw6E/видео.html
I like ice, but not like that😥
thanks for watching , I am going live on youtube tonight at 5:00pm pacific standard time come on over and check it out ruclips.net/video/lBpaoxAtSzw/видео.html
hi put hot vapor you can buy in amazon
I dont understand what you are saying?
My supervisor says their no such thing as a winter charge which I think he’s wrong.
is it possible that he doesn't understand what you are talking about? some might call it the headmaster charge.... Bottom line if the unit has a headmaster it requires more refrigerant than the same system without a headmaster.
Why didn't you use a heat gun to thaw the coil?
I prefer to use a water hose because in my opinon it goes faster and it allows me to clean the coil at the same time, thanks for watching , I am going live on youtube tonight at 5:00pm pacific standard time come on over and check it out ruclips.net/video/lBpaoxAtSzw/видео.html
And throws less heat into an already warm box
It takes the same amount of BTUs to thaw the ice no matter how you get them. It's just less water with a heat gun so you don't flood the drain. Something like a quartz radiant heater can focus heat on the coil.
Has anyone tried a small steam cleaner on these? The frozen coils I normally found were in air conditioner coils in furnaces when people didn't change the air filters often enough. It is easy to thaw those just by turning the system to heating. Maybe one of those steamers would both heat and clean.
Steam? Talk about btus added to the box. Makes no sense sorry. It only takes 144btus to bring 32* ice to 32* water. To create steam your using 970 additional btus on top of the 180 needed to first boil the water. I'll stick with 144btus and watch it go down the drain instead of the air.
Not a race but the customer is paying by the hour so they normally dont care about a bit of mess if it helps not hurt their wallet i am in the uk maybe its different in the states
i don't agree with the overcharge of receiver big waste.
why?
The freon level in the reciever can change alot in such systems when door is open or closed.....
I would check the level on full load and open doors though.....
No wonder I get Hart burn from taco Bell im eating degreser trace amounts in my Doreto taco
0:55 - I don’t see where you’re getting the mfg date.
You do not hurry. Of course, you charge per hour. Why hurry?.
Teaching people to take their time and fix it right is the best method, when you rush you make mistakes.Thanks for watching bud!