THIS WAS EPIC, AND THE PROBLEMS KEPT COMING
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- เผยแพร่เมื่อ 1 ก.ค. 2024
- Wow talk about one thing after another this walk in freezer was beat down, but this is what the customer gets for doing reactive maintenance.
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00:00 VIDEO START
0:21 INITIAL INSPECTION
06:18 CONTACTOR INSPECTION
08:09 1 2 3 PLEASE DON'T BLOW UP
10:00 CONTACTOR TEAR DOWN
11:12 COIL CLEANING
14:01 WTF MOMENT
15:26 MORE ISSUES
17:35 NOW A RESTRICTION...
23:29 TEMPORARY FIX
27:38 CLOSING WORDS
![[UNCUT] ย้อนฟัง 2 บิ๊กตำรวจปะทะกัน "บิ๊กโจ๊ก VS รองแต้ม" ฟ้องเรียก 10 ล้าน!! I คนดังนั่งเคลียร์](http://i.ytimg.com/vi/vNpTtVjdcBo/mqdefault.jpg)
"freezer not working" *bungee cord holding door open*
Ahh, shit. Here we go again.
The recurring character we all love to hate
@@MarkAtwood0430 Good thing for big picture diagnosis tho!
Yeah that bungee cord thing seems to be a California thing.
40 yrs. in the supermarket industry I've never seen that.
Here in Georgia it gets below freezing in the winter and people are
more accustom to the cold I guess.
I see $$$$ in your immediate future.
GTA REFRENCE AT END?!?!?!?!??!?!
I'm not in HVAC/R. I listen to your videos while i work, and they really help me focus on my tasks!! You are an awesome mentor, and you're THE ONLY HVAC/R guy i subscribe too on TH-cam! Much love man!!
To quote Rainman Ray: "Load the parts cannon! Reeeeeeeeee!"
baha yep,he cracks me up with the "reeee"
The parts cannon is typically "guessing at the problem part and spray and pray fixes". This is just needing a ton of parts.
@@x_x_w_ accurately aimed parts cannon ;)
@@TheChipmunk2008 parts marksman rifle
Gotta love Rainman Ray!
Always used to think of California as a fair weather place, but between dust storms and what looks like golf ball size hailstones, maybe not
Hail of more than pea grain size is pretty unusual in So Cal, and even that for most places is once or twice in 10 years for 5 minutes at a time. On the other hand, blowing sand that you can't see 30 feet through in the deserts can be fairly common at various times of the year, since it never rains. Actual dust used to be somewhat common in areas that aren't the desert, but most everything now is houses and lawns and there isn't that much bare dirt to be seen anymore.
The other problem with the deserts is they don't have much cloud cover, so can get below freezing at night and 120F in the shade during the day. You have to get used to large temperature changes during the day.
It is. But it covers thousands of square miles of forests, oceanic, subtropical, Mediterranean, mountains, deserts... weather happens anywhere.
@@lwilton I have never seen a bigger than 40F temperature swing in the southwest desert. If it's 120F it ain't getting below 80 at night, probably barely below 100. But actual 120F is rare. 110 and 80 is only a 30F temp swing. I have never, ever experienced this so called "freezing to hundreds" swing.
I can't speak on other deserts of the world
That was a cha-ching, cha-ching service call. No maintenance.....equals high dollar service calls. You did right thing for your customer.....but.....damn thats a lot of stuff going wrong.
"It's three weeks and they haven't called yet."
Well, of course. It isn't Friday afternoon yet.
I sure do love your systematic approach to troubleshooting....thank you for the "guilt feeling"....it let's me know that I am not alone in that mindset....Thank you from Augusta, Georgia....
I will discuss this on my livestream this evening 1/17/22 @ 5:PM (pacific) on TH-cam come over and check it out th-cam.com/video/kyIKGtwKZ4U/w-d-xo.html
@@HVACRVIDEOS Wouldnt these places save a huge amount of $$ on their power bill, by just PERIODIC CONDENSER CLEANING? Those things are FILTHY. I mean what does a KWH cost there ? . Anyway, nice show. Was into heavy industrial ammonia refrigeration years ago , but watching this is COOL.
I REALLY hope you told the Manager that that disconnect MUST be changed within a day or 2 of your visit and that is NOT Negotiable...it MUST BE DONE or that disconnect WILL cause a fire!!!
I love the way you work. I'm in a completely different field, managing carts for a golf course but that big picture stuff and 1 2 3 PLEASEDONTBLOWUP is super useful 😂 Thanks for the entertaining and informative content!
I like the Giant dumpster fire One 🔥
Can't say it enough. I use your vids to help train my guys here in the Philippines. It's a whole different world over here & customers don't like approving parts "just make it work". I've walked into some gawd awful hack jobs from previous techs. Your vids reinforce the big picture i teach my folks & customers. Thanks again, Cris.
Good video, I totally agree with changing the ECM motors to PSC motors, also fan cycling the condensor motors is a very good and old school way to control the head pressure. I work in a very cold part of the country, unlike your desert and find fan cycling works great. Thanks for the video.
OMG removing ECM's to install PSC motors in California(stoogefornia) now days?, they'll soon arrest him and take his licenses away, etc etc etc...
@@throttlebottle5906 The Restaurant Owners don't want that prone to failure fad. ECM motors and circuit boards, inverters ENRAGE customers with their prices (and down time), and expense not made up with energy savings
@@SovereignTroll it was super heavy sarcasm towards the Crapifoolia government.
Agreed .ecm motors don't last
@@SovereignTroll Great reply and I totally agree.
You can always use a pinch off tool on the pigtail of the headmaster to stop it from leaking out the charge if it does start to leak when you snip it
Awesome Vid Chris. I learned alot on that svc call. Thanks for sharing.
Where are the Bungee-eraticuss-cutterers at when you need them
My buddy had to bungy cord his old blazer into four wheel high to go off roading!!! It was hilarious!!!
your understanding of how it works always amazes me!
Love how you said take pictures, I tell every young tech pictures, or even use painters tape and write down every wire, were in Canada and if doing a heat pump maintenance and have to pull the blower to clean the wheel, use a sharpie and identify all the control wires, sometimes their is heat pump/Hrv/humidifier wires coming in.
Just write it down inside cabinet, never have to worry about it again.
Any time I take anything apart, I use sharpie and masking tape, and take lots of pictures or video. It helps so much later on when I put it all back together. I couldn't agree with you more.
I greatly enjoy watching your professionalism, detailed attention and enormous knowledge! You are beyond the best!
By me watching your videos I've been watching every condensing coil I go to and now I'm going through every component if it's possible so thank you you have made me a better tech
Thanks for pointing the numbers out on the dial, excellent diagnostics and the underlying physics.
Thanks Chris !
I totally understand how you felt bro. And you're correct with not sending a apprentice to fix the issue of just the fan motor. Sometimes you walk into just a repair based on what the customer sees but it's much more than that. Knowing how to talk to your customers is important on every level.
God Bless you guys I really appreciate you.
Excellent video!
Great work Chris
I watched one of your videos once because I was bored, sick, and couldn't sleep (it was the algorithm). And then I watched another. And another. Eventually I did sleep... now I just about have to watch one to fall sleep.
What's worse? I'm invested now.
Iced up evaporator? Is there power to the defrost heaters? Are they leaving the door open? Is it draining correctly?
No power to the rooftop unit? Check for 3 phase.
Tripped breaker? Check for direct shorts to ground. Why'd it trip to begin with!? Trashy contactor? Overamp'ing motor?
I know what micro-channel safe cleaner is. I know who makes defrost clocks.
In fact, I know more about AC than I have ever wanted to. (kidding, you are a fantastic teacher - thanks for putting this out here for free)
Thanks for the excellent content, see you in Vegas!
Thats a lot of good info chris with all that theory about raising the head pressure so it doesnt by pass keep it up!
Chris, love these vids, but 56f isn’t cold,😂, thats still T-shirt weather, I have a walk in freezer call tomorrow a major fast food restaurant, high tomorrow is -31f, it does cloud your vision the extreme cold, electronic blue tooth gauges not working properly, analog gauges are good, but trying to get temps off hand held thermometers is tough, basically try to get the unit to cool.
Just changing a contactor is tough with tiny screws. Pro tip, jump out the heat on the closest rooftop, remove the inspection panel for the heat exchanger, free heat😂 I do it all the time.
Awesome! Love ya my man.
Seems like you’ll have to replace a OEM contractor, that lasted the better part of 15 years. That new one will have to be replaced in a year and a half? But then again Big Picture is the unit will be pushed to be replaced in 5 years. Thank you for your videos. I’ve been a tech for 3 years and have learned so much from you. Awesome work ethic, very inspiring.
We just got all new Hill Phoenix coolers at my work. I think they’re pretty nice and by the looks of it they have Sporlan thermostats / controllers. The main cooling unit for these is absolutely massive though. It serves the entire store and has pipes running all over the place. I don’t know why they had to change it but they ran new drainage under the floor and ran the compressor’s pipes across the ceiling. Very interesting setup.
Happy New year to you
from Novato ca .. Marin County
Chris ,
Dang that is a nightmare. One thing after another. Regardless good repairs cause you got them operational. Nice job ...
That was a fun service call
Wow! , you get the good ones.
Happy new year
It looks like the valve was recently replaced. You could still see clean copper and the paint on the head was still shiny.
Note to self stop sun baking while waiting for the other technician to arrive.
Penny wise and pound foolish. You go out there and they are paying your travel time (I assume). Then they either pay for the second tech or they pay for your turnaround time at the supply house. What happens when the compressor on that dies late Saturday afternoon? An emergency after hours call on the weekend will cost them a lot. Then they don't even maintain their equipment right. Screw feeling guilty. They should be glad they got you instead of somebody who'd take total advantage of them to stack up the invoices.
When real life work is like magic to those of us with no clue about what u r doing. Another good video. No idea what u saying but it's fascinating 🤔.
Greets from Germany
Great work. Thank you for going through everything for us to learn. Did it finally have a P trap going up?
Nice! Dusts from distant Chinese sandstorms.
Nice video I love watching your videos
My centeral air has the oringal contactor in it from 1988 still working to its def worn out but still actuates and does what its sopposed to do
You're videos are very good. If most hvacr programs just showed your videos they'd be set.
That headmaster appeared to be bypassing properly, 167psi is very normal for a 180 head pressure control valve.... My guess would be the drier is partially plugged. That headmaster appears to have been just replaced and drier looks old af. Not to mention the sight glass before the drier so can't really tell if you have liquid after that drier. A temp drop test across the drier would be good, but depending on your subcooling it might not show a drop in temp till 15-20psi area... Unfortunately when you do change the headmaster you'll change the drier at the same time and think it was the flooding valve that was bad, when the box starts working properly and suction pressure and sh start to fall in line. I would cut that drier open when u do the repair or bang it and watch all the carbon come out. Those ek driers catch a lot of crap. Maybe add a liquid fitting after the drier too just so you test the drop across that drier. Good video though! I really wish I had someone like you making videos when I first started in this trade.
I wonder if that system will now go another couple of yrs before they even need to consider replacing it.
Another amazing video by an amazing tech.
I know you talked about it at the end but I still want to ask, do you think you could have looked at the refrigeration cycle sooner? How/when?
You’re the best.
Great video, a lot of good real life info. Snowball effect…
I don't know how practical it is for yall, but to increase repair time we started using Uber connect to send parts. If someone is at the shop they'll gather the parts and send em over.
Great video Chris. I had this exact problem with a head pressure control valve on a walk in cooler for a liquor store. I didn't have a fan cycle control, but I like that idea. Thankfully had warmed up to around 32f outdoor, had been -30f the day it went down, it was so cold I couldn't even get the compressor to stay on for more than 3 seconds and then cycle off on low pressure control. Had to wait a week and a half for the OROA-5-210 HPC. Replaced the txv and drier as well. Even after replacing all that, for 404A my evap temp was around 16f, which seemed a little on the low side for 36f box, is it reasonable to run a 20f TD like that? Head pressure control valve maintained head pressure around 200psi(was 25f outside), 20f compressor superheat.
Thoughts?
“Those dodo heads down there probably pulled the switch timer” 😂😂
Chris please install door switch is simple.
Here in Greece we have installed on walking freezers and coolers a door switch combined with the LAE electronic thermostat controller AT2-5 or AD2-5. The AD2-5 is recommended if you want to install recorder with RS485 or BMS
At least the frog sounds great.
those are arc burns on the contacts, happens when electricity is sparking across surface when they pull apart or come together.
would be good idea to get some 1/4 inch wire fence and space it 2 to 4 inches in front of the units fins to protect against hail damage.
Yeah I have tried to sell them on hail guards but they haven't approved them yet..... I will discuss this on my livestream this evening 1/17/22 @ 5:PM (pacific) on TH-cam come over and check it out th-cam.com/video/kyIKGtwKZ4U/w-d-xo.html
@@HVACRVIDEOS lived in texas early 70's had lots of hail damage see cars that look like someone took a ballpeen hammer to them and roof of woolworth store caved in from hail load, the 1/4 wire fencing also keeps leaves and critters out.
Charging of Systems with Sporlan Head
Pressure Control in Ambients BELOW 70°F
Since good system performance during low ambient operation
depends on proper refrigerant charge, it is very important that
this phase of the installation procedure be done carefully.
Many times, poor system performance will be due to too little
or too much charge.
I will discuss this on my Livestream this evening 8/22/22 @ 5:PM (pacific) on TH-cam come over and check it out th-cam.com/video/qLynm0RQU7U/w-d-xo.html
@@HVACRVIDEOS
Love your stuff , sharing your knowledge is making better techs everyday .
Great job wish I could work with you
about that contactor: carbon is typically black. the white color makes me think of zinc oxide (basically, zinc rust.) i dont know what metal alloys they use for the contactor components, but combined with the pitting (caused by arcing, yes?) it suggests to my layman brain that the white stuff is some sort of metal oxide (rust.)
but of course, i am a layman, and carbon can come white... so i could be 100% wrong.
I’m sure we’ve all seen it multiple times with contactors. Especially those Eatons. I’m assuming it’s due to aluminum and whatever else they mix with it.
Regardless great sign of wear. I don’t always change contactor when I see the white dust but I do always open it up check it when I see that.
@@jphvac5725 you just opened my mind to another possibility, aluminum oxide.
and of course, i bow my head to you guys who deal with this stuff on the daily. i did not intend to sound like i questioned that the contactor needs replacing, i'm just kind of interested in the dust and what it actually is.
@@rakninja since it's all Chinese it's probably lead. I suggest Chris making a line and snorting it to find out!
@@etherealrose2139 that's surprisingly mean spirited. also, lead oxide is not white.
need to disable that twist timer downstairs too. might solve a few problems
💪👍🐕🇺🇸 thanks for sharing
I think it is good practice to use contact-cleaner on the electronic board and the contactors, sure help to keep alive some relays and contactors.
PD: its seems the board fuses are overheated...
17:00 maybe the vibrations from the bad fan messed with the pressure controls? just an idea.
This video is brought to you be deeez nutz
Love all viper products except for the small pump sprayer. I bought two and neither one work for me.
Looks like a good place to use an Electronic defrost clock
Awesome video. Yeah that unit kinda got parts cannoned 😳 hope those wires weren't live so gald you didn't get hurt by them. Now I'm no wildlife expert and im sure frogs aren't endangered (Would have to ask my brother the wildlife biologist) but i Dont think putting frogs in your throat is acceptable anywhere 😉😜. Hope you get a chuckle out of that and feel better soon my friend :)
Your dirty coil was actually helping you but also was possibly cause of your restrictions, overheating gumming up your oil?
Ok, if you know the dust is an issue, why not use a IP66 box for electronics?
I agree with a couple of commenters who are skeptical as to the bypass valve being the main culprit for the high superheat. Even when the fan was disconnected, elevating the condensing temp to 30deg above ambient, you still had high superheat. I'd suspect some other liquid line restriction . Also, is there any difference in air flow through evap with the PSC retrofit? Were those ECMs being modulated by a control at the evap? Great video! Thanx
Chris...you are too conscientious. You care too much. I have the same disease...I feel your pain. Keep up the good work!
The drier should have been before the sight glass btw 😉
Lack of preventative maint = let it fall to bits then call up some poor sap to turn out immediately because we are down. Good for you charge em double
Great little vid ... Your knowledge is 2nd to none ... Is that a Simpson meter on top of the merch bins ?
Yeah, and they are available new too.
Yes it's my dad's old Simpson 260
He said….
Plunger thingy 😂
Chris you should just supply each truck with a new condensing unit…. Just pull the gas braze a couple joints land 6 wires and done. Especially being hours from parts… 😳 yikes!!!!!
I watch few dozens of your videos by now, always have question about coil being dent on roof of your customer when it seems like roof is only accessed when there is maintenance required.
The air conditioners are probably *HELL* to work on if ur new
Problems keep coming because you can't fix them the first time.
Have you looked at electronic defrost clocks for the condensing units to use in the regions where mechanical ones get gummed up with sand or debris? The up-front component cost might be higher, but it seems like the lack of mechanical components to be filled with sand could help with preventing replacements.
I will discuss this on my Livestream on TH-cam this evening, 1/24/22 @ 5:PM (pacific) to come over and check it out th-cam.com/video/lbSNs2Wizok/w-d-xo.html
Where do the contaminates come from in a closed sealed system?
any reason they dont use enclosed timeclocks in like a small dust sealed mini enclosure inside
3:12 do ya see the rust dust from the disconnect switch
I don't think that is rust, I think it is just plain very fine sand dust, like the stuff he blew out of the coil. This is a real dry environment, so rust like you would see in a rainy or cold climate is very rare.
How long does it take before your apprentices get a truck & work alone on calls ? (Average)
New tech from Montréal and your videos are very helpful! Merci
He already has his own van, and I expect him to be on his own by this summer
Hey man what’s that wand Brand and model? That thing looks like it’s perfect for coils
That disconnect needs some contact cleaner on the shaft and some WD 40.
Had a similar issue where everything seemed to go wrong on a split sytem a week back. by the end of it, my service manager and I counted 9 separate issues the last tech caused while working on this unit. in order of being found: 1.) doors to the furnace/air handler unit were off and door switch was open. 2.) thermostat wire and AC wire were mixed up.(Both were 5 wire and they were wired backwards) 3.) the thermostat wire itself was wired incorrectly,(the previous tech color matched wires to board, which made the red and white ac wire be hooked up to the R and W terminal on the board.) 4.) blower motor capacitor had a disconnected wire that was hidden with wraps of tape. 5.) one of the fan speeds was disconnected from the control board. 6.) condensate line was not glued in some areas and had come undone. (Thankfully it had not run since then, or there would've been water damage to their office ceiling.) 7.) There was a nick in the thermostat wire behind the baseplate of the thermostat, keeping the R wire open. 8.) Rooftop unit thermostat wire was wired incorrectly as well. 9.) the disconnect on the rooftop was switched off.
Not really sure what this customer did to piss off the previous tech, but everything we fixed was something that was made wrong by said tech. and i can say that with confidence because we had been there previously to work on a different unit next to this one, which was running as it should have been.
Serious question..why are the electronics bays not better sealed off from the elements?
I'm not sure how much similar equipment they had on their roof, but if any, then aren't those new parts could be reused in their other equipment later, just in case? In such case I think it would be a good idea to disassemble and keep these new parts there somewhere when this equipment gets replaced. Just in case something dies in some of their other old equipment in the future. Or are these motors, defrost clocks and contactors so special that there's no chance to reuse them?
NO. Warranty and call-backs very unpopular. A used part ONLY for a day or two to save product.
If I have to reuse a part I tell the customer what their getting some are cool with some aren't it all depends not everyone has money im residential hvac so it's a little different I save quite a few parts blower motors, oil burner parts, gas valves little granny on a fixed income appreciate it and it saves then a few bucks when I do put stuff like that In they know it may not last long and I can't warranty the part
@@saywhatnowcomon3426 You are violating the law in some states and it is totally unethical. A used inducer or heat exchanger are all a lawsuit for fires, shocks and injuries.
Some pipe insulation on that wand to help with the hot water.
I wonder what happens when a thunder strike gets to them roof AC did you ever had to fix one that has thunder strike damage ??
Load up the parts cannon!!!
Replace the equipment and get rid of many of those analog pieces. (analog clock? lol. In dust???)
In the Southern California desert? That would be Imperial County? Or are you up in Palm Springs area?
@16:21 unit not running due to not getting up to cut in pressure?
I know its not practical in the field but would using the grasslin box in situations like these?
Why aren;t the electronics in a IP54 or better enclosure?
I used to work at a bakery. same problem. limited maintenance done. when I started there I had to blow out condensers and evaporator on the freezers and coolers including units in the deli. I told the idiots you can't do that. hire a guy and do it right. but explaining it to ppl with more money than brains is impossible. I told them you wash them out, not blow them out. they used a " straight chuck" to do this. in other words 150 psi of air right off a big compressor. it was trashing shit but they refused to listen. that kind of pressure wiggles the fins back and forth like the Reed in a saxophone. they get maybe a year out of units then they be trash. you can't fix stupid. won't spend a couple hundred clean them right. spend thousands and cry about it having to replace them.
Actually, in the perfect world they won't even do _any_ of that, because we won't even need any refrigeration!
Attack it with my blower *turns on the dust blower* 🤪
Seems they oversize wires for the condenser