I've worked on many of these systems and have always wondered if they were undersized. I had a customer that said they washed it themselves on 2 different occasions and their equipment still wasn't working properly. I found the confetti that was for the new years party 7 months prior. So I don't think they cleaned them very well...
Penny wise, dollar foolish! The dollars are flying out the window but they know where every penny is. Not the first time you will see/hear of this nor will it be the last.
Ever had a bean counter brother in law? I have personal experience with this bizarre mindset. Why change the oil? That costs money! Why replace bald tires? That costs money!
I heard a saying years ago and it still sticks with me to this day: "There's never enough money to do it right the first time but there's always money to do it a second time."
Love your videos been in the trade 7 years, 1 year maintenance, 3 year installs and 3 years of service worked with alot of older guys and your information is just as good as their's really appreciate your vids
I really enjoy your videos. As I live in an area where it takes an average of one and a half hours to get here from any HVAC repair/supply service. The cost of service just to drive here is outrageous as well. I am learning a lot and I have been able to service my 20+ year old Central Air unit and keep it working really well. I was afraid that it was gonna need replaced this year because I thought it was going out, but it works like a champ now after seeing that a lot of the cooling issues were the heat dissipation on the AC was clogged up, I didn't know that would be such an issue and cleaned it out. We have had a few days of 100+ degree temps too and no disruptions in cooling. Thank you for the informative videos.
Man for you I will watch the commercials from now on no more skipping the ad do you enjoy watching your videos I love the big picture diagnosis keep up the good work
We lost quite a few restaurants in the initial shutdown in Michigan. Now that some have reopened, they are all looking for the cheapest fix we can give them. We continue to give the best advice possible, but it's frustrating that the restaurateurs are not making wiser choices. My old boss tried and tried to get a simple fact through my head. "We are responsible to the customer. Not for the customer." It's a simple truth that I still struggle with after all these years, and even more today.
It blows my mind that they would not have you come out for their freezer. As a former restaurant manager, I’m more concerned about the money in the freezer than I am about paying someone overtime... Great Video as always
They're potentially risking writing off thousands of dollars in product as well as thousands of dollars of damage to the equipment to try and save a couple hundred bucks. It's the epitome of penny wise pound foolish.
You might want to see whose budget that stuff comes out of. I can believe a manager will risk $4K of corporate budget to save a few hindered off of his. Especially if his bonus is tied to his budget. Yes, sometimes people are stupid, but sometimes the system gives them incentive to be "stupid".
Honestly you have taught me so much about diagnosing and I’m a heavy truck mechanic. I have recently been trying to adopt the big picture mentality even though my coworkers have been making fun of it. All I got to say is that looking over everything that can cause the problem you are trying to fix and testing everything instead of guessing has dramatically improved my diagnostic ability ten fold
My dad and his dad both were in the HVAC field. I've always been indoctrinated into the nu-calgon coil cleaner products, but today I placed an order for some of the Refrigeration Technologies Viper condenser and evaporator cleaners to try them out at the house and at the inlaws units. Long run-time season is upon us in NE Texas. Keeping that head down to spec operating range via clean coils was a key that my pop drills into my head to this very day. "If you don't schedule PM's for your equipment, the equipment will eventually schedule a service call..usually at the worst possible time, and at 10x the cost." I love the content, and it's good to see someone else's work procedures and tools they utilize.
I worked in a place with a huge display cooler running a compressor the size of a coffee can because they wanted it low profile in the store front and in a year working there it got to safe temperature once for about an hour but the boss was too cheap to upgrade it so we as staff just ignored the fact the food was always at unsafe temperatures. It took being caught twice by a food inspector to finally do it.
THAT is when you make an Anonymous call to said Food Inspector at least 2-3 times a week until the Boss pulls his head out of his waste-disposal-orifice and upgrades the system. Did no one explain to the Moron (Boss) that upgrading is FAR cheaper than a Food Poisoning/Wrongful Death Lawsuit and resulting Bad Publicity would be?
Yep, dealing with the public is a problem, I know I did it for years. And manufacturers, they try to get by like you said" ONE SIZE FITS ALL". I hope your customers know that you treat them fair and square. Keep up the good work.
Hi Chris, so I am hooked on your video even though I fix laptops as my job. The way I see your business is out of sight out of mind from an end users point of view. These same people change the oil in their car, paint their houses, clean their gutters etc. you would think with the cost of food and having their equipment pulling down their business, that they would prescribe to having cleaning and proper maintenance on this stuff. What bunch of idiots. Like the mechanic says “ you can pay me know, or pay me later. “ Chris’s, keep up the awesome work. Your customers are lucky to have you. Neal
We have exact same situation here in France.... All the new builds scheduled for september have to be done mid August, but all maintenance cancelled in existing restaurants and I have to fix everything for yesterday charging nought... ah well at least I go to Arcachon and around almost everyday and eat for free :-D
I know it would be considered a botch but it would be easy to add another condensing core on the side panel just beside the existing one, if you could get your hands on one spare core like the smaller ones in the rack it would fit perfect since it already has the right length. You would just have to cut the rectangular hole in the panel and braze it in series with the main one. I know it sounds like a hack but i like it better than that swamp cooler... Keep it up! Edit: I see a problem in my solution, opening a hole there would reduce the amount of air passing thru the other cores. mmm
Hey man I love your videos! I’m in the same trade as a apprentice and watching your videos really helps me with my trouble shooting and becoming a better tech. Much mahalo for the videos and the help!
Only a couple months late to the party, but: Swamp cooler pumps won't burn up from running dry; there's no seal on the wet end. Yeah, it'll make some angry noises when it gets air in the impeller but that doesn't hurt it.
I've been to a few jobs as a telecoms engineer where air con has failed in server rooms and been expected to try and resolve faults. I've always refused to work until it's fixed, funny how quick management then approve repairs.
You mean that a remote telco site at 122 degree air temp and equipment racks too hot to touch barehanded isn't good? Been there, done that. It's even better when you also have a UPS or DC plant system with lead acid batteries giving off enough vapor to cause your skin to tingle and eyes to water on top of the high temps.
Great video Chris. Something you didn't mention (or I'm too dumb to know otherwise) is the importance of PMs. The customer had this problem because of a dirty condenser (and the other slew of problems).
I’m changing out two Trane rotolocs that were bypassing internally due to continuous lint plugging of the coil. They got weak and would bypass at just over 200psi (R22). I’m adding manual reset high pressure switches.
I like the swamp cooler to help pre-cool. Here in SoFlo, to install that, we would need a hurricane stand, engineering to secure it directly to the wood/metal trusses, (cutting through the roof), as well as securing the unit to the hurricane stand, mechanicl permit, and electrical permit, and a plumbing permit. Wish we could just screw it to a couple of 4x4s!!!!
@@eggman9713 The only thing that swamp coolers do in the southern states is give people legionaires disease and grow toxic mold. Humidity is near 100% almost year round.
I feel this pain working for many restaurants in my life and now for a major grocery company this heat is crazy ours has been going down alot or going into defrost a lot. Wish you worked for us love your videos or hell I'd even work for you as I've pretty much taking all of those things apart from the fan blades and such as most restaurants don't wanna pay for repairs or pay weekend pay lol so I've fixed many of them
On an additional note, with respect to high compression ratios, specifically on reciprocating compressors, excessively high head pressures can cause refrigerant vapor "blow by" to occur in the cylinder on the piston upstroke.Good work on your part, as usual.
Im amazed that compressor still works alright after pissing by like that for 3 days. Thats also the only acceptable use of a swamp cooler. I hate those germ infested boxes with a passion. They were very commonly installed on houses here in the 90s until inverter mini splits became affordable
It probably doesn't matter given how few of your clients actually do any PM (well, I guess you only show the ones who wait too long). Anyhow, I *did* want to mention the awesomeness of *linear drains* . We put one in our *shower* , and it slows the flow so that the "debris" gets caught in the trench, allowing water to go down the drain hole, and to clean it you simply remove the cover, and all the gunk is easily scoopable... I thought if this when I saw the one small drainhole for that entire tray.
not seen any video of any bypassing, very informative! so much to learn, but I see my knowledge improving day by day. just over 2 weeks until I pay my house off & will sign up for HVAC online classes as for the ads, its appreciated, some IDIOTS will put 5 or more for a 15 min or so video, even a cooking channel, guess who will get pissed by second one within a few min & stop watching the video. but 1-2 depnding on length is great. 1 guy puts his ad the first few min, then nothing else, while a welder I watch, usually has his either at a high point of video, or just before his recap, but he only puts 1.
Another not about the commercials is they are starting to bypass ad blockers with static ads so that will help your revenue a bit too. Ad block users don't get the full video ads, static ads are now coming through.
So I had a question about all the different refrigerants that I see labeled on the equipment that you service. Would you be up to making a video about the differences in the refrigerants. Ex. R12,R134a, R22, R1234yf, R290,R404,R410a, etc.🙂
I know your a fan of viper and their cleaning products, their are alot to chose from and I don't know what to buy could you make a video on the equipment you use?
I imagine a suitable HP-switch which gives a quiet alarm sound inside the freezer or blinking red lamp. Then costumer knows then it is time to get a PM-clean even if it runs "great". Can't be that expensive to route the cables and add that additional pressostat at the same time as system is vacuumed for other reason.
13:00 Did they lose any product? Not sure what kind of product served, but a freezer full of product being lost and having to be restocked quickly seems like it would be expensive.
Good point. My food service career was pretty short and limited to fixing arcade machines, occasionally serving pizza, and waking up "the Mouse." Got kicked into a soccer game and so ended my food service career, and back injuries. Did prep some hot wings for 3 hours one time.
At 6:13 it looks like the 2 rightmost systems have the line cut to the dryers. That seems like it would let a bunch of junk in, making those systems unusable? Or am I jist misunderstanding what I am seeing?
Yeah good catch they are disconnected from the restaurant, the customer made some major system changes and installed self contained units downstairs...
Usually when you're working in a walk-in freezer it's broken and piss warm. The one I was in today was satisfied at like Minnesota in January and once it detected my shivering ass trying to do inventory in there warming things up it kicked on and went into blizzard without the snow on the back of my head causing me to have a brain freeze like drinking one of those 64oz big slurpees at 7-11 from the 90's too fast.
Thanks bud!! I will be going live on TH-cam this evening 7/20/20 @ 5:PM (pacific time) to discuss my most recent uploads and answer questions from emails, TH-cam comments, Facebook messages, and the Livechat come over and check it out th-cam.com/video/so96BjUGwvw/w-d-xo.html
I'm not a rack guy, but you said the clean coil pressure is good. From what I see it really did not change from initial gauge readings. 36/280 initial. 21/287 clean. That 14PSIG make that much difference?
the initial reading was with the compressor internal bypass open and whistling refrigerant in a circle inside itself. so less liquid flowing and returning too hot and higher suction pressure because it's dumping excess back into itself. that means phase change isn't happening properly, the metering device cannot correct it and poor cooling results, the odd frost pattern on evap. coil when inside the unit. I'd guess it's been loosing ground and gradually climbing in temps since Friday when they admitted it started or was noticed
Why isn't it possible to add a second condenser for the freezer? Sort of stack them but leave space between them for air and cleaning porposes... Or even put a second fan in for that extra condenser even my window unit has issues sometimes in that department lol
Can only do what the customer authorizes. A simple fix to an installer/mechanic is an unknown, extra expense to someone who doesn't have a clue about HVACR. My background personally is an electromechanical one by schooling and I work in telecommunications. Years ago while in the USAR as a kid, I had some exposure to refrigeration so while I don't know enough to work on it or have a lot of depth of theory, I can at least understand what's in front of me and a little bit of the how and why when dealing with the mechanics working on our systems at work.
@@utubedestroysmytime I would hope after three compressors it was evacuated right at least one of those time and I am sure all three. Like Chris said though, the condenser is undersized for the application. And yeah, maybe they did pitch the high pressure cut off to the customer and they rejected it. I don't see how though, installing the cut off is much less than a compressor.... let alone three compressors! If they were worried about it kicking off and loosing cooling, then what when something like this video happens? Good video by the way, as always.
The green switch on the discharge line from the compressor looks like an auto reset high pressure cutout. Some Carrier units I work on have a control that will lock out if the compressor cycles to often. So you could add something like that which would also catch rapid short cycling due to low pressure issues as well say if the liquid line solenoid fails to seal etc. Or just replace with a Manual reset high pressure control
I've been watching your videos for a while now. I have a question regarding cleaning condenser coils. I assume you don't pressure wash them because of possible fun damage. What is the most pressure you think you could use for cleaning them without damage? Sometimes the 60 psi or so on the city supply just doesn't seem high enough to do anything
To the younger new guys... that box will take some DAYS to get down to -10 box by time the product refreezes... umay get disch. air -18.. but the product has warmed up the weekend...again putting more stress on the hurting compressor..
Those con coils looked like they had open sides on them. I don’t know, but wonder if closed sides would force air through the entire coil pulling out more heat. It seems like the path of least resistance would be to short circuit out the sides.
Moral of the story: Customer has to be diligent on maintenance, even more if the system is undersized. Cheaper to do PM than replacing major components
It could be "Hey, if we dump the bucks into equipment upgrades now, we can start depreciating or write-off the expense by other means and then if we need to sell-out we can justify asking for more money, than if we just sit around and pray and still have to sell". It might even be easier to get equipment loans at longer terms than it would be to get "operating expenses" money. And if they upgrade and manage to hang in there long enough they might be able to recover it all at a future date.
gotta pay for a compressor because they can’t pay for overtime. gotta pay for a service call because they don’t pay for preventive maintenance. and what does it cost if the contents of that freezer spoil, or they have to shut down for a few days because they have no freezer...
Asked my wife if she wanted an HVACR shirt, she said she would wear one ONLY if it says 'the walk in cooler is down' with your HVACR trademark on it lol.. can you maybe do some of those or your usual quips?
Won't that swamp cooler create humidity that will cause the condenser to get dirty sooner? Also would a high pressure cut out have been worth installing during the last compressure change?
Is it normal for commercial refrigeration components to malfunction or die as regularly as is described here and in other videos? I tend to think of recent residential equipment as being more or less guaranteed to fail frequently because of the consumer's cost constraints along with desperate competition to price for that while still making a buck, but don't commercial/industrial customers demand better?
Even as an informed amateur I noticed the different compressor sizes but apparently same sized condensers. Didn't realise the full implications though.
Hey i have a question for you. What would you recommend would be the best cleaner for exhaust fan filters (stainless steel) from above a grill and two friers. Very oily
Obviously, the manufacturer failed to properly size the condenser for 110*F ambient air temperature. As mentioned in other comments, they should let you size and install a properly sized remote condenser on that system. If not, I would suggest installing a manual reset high-pressure control. Hopefully, doing that would not only get you out there to clean the condenser coil, it could save them from having to change out so many compressors. As always, another "big picture" resolution!
These sorts of jobs i don't particularly enjoy. Wasn't right from the beginning, poor maintenance made it worse, customer doesn't want to do the real fix. When i go out and diagnose something i want to fix it once and for all. I know not everyone thinks that way. I've had workmates who like the money going out on overtime for easy fixes. I like my sleep better. Most of the time i can steer customers towards the real fixes though, and that's very nice. I'm also quite fortunate that i freely plan maintenance by myself. Things that need to work through the summer i do PM on in the spring, things that need to work through the winter i do PM on in the fall.
good Vid. Frankly i'm suprised that u have not gotten away from R-404A and Use a Lower Presure refrigerant in your area ( the Gates of Hell ) . Pt chart for 404a at 115 ambient is no good even with a clean coil. id Recommend not using 404 in your area and use a Refrigerant similar in pressure to R-22. i Recommend R-422B. i use it for Walk-in coolers and absolutely Love it for Medium Temp. i Would Have no quams about using it For Low Temp. and it's cheap now . price is coming down alot. u can reduce your head pressure by 100 psig in most applications. Your other option is Have a 2 Row condenser made to fit above the existing condenser slab. measure it up. have american coil inla make it for u.just screw ti to the top of existing coil. it looks like u have plenty of room. another option is add a ice machine Remote condenser across from unit and pipe it in. another option is next time u change the Compressor see if u can install one 1/2 ton smaller in same place barring that evap is not too big.
It is hard to upsell a repair so a unit can last 10 more years when they are not sure about next month ....... Be safe and make you are able to count to 21 when you get home every night .
After a long day of service calls and fixing crap, it's nice to sit back and watch someone else do it
Right! This trade is so interesting.
That's exactly what I was thinking. 🍻
Anything Alarm just subscribed to your channel.
Drinking game: every time you hear “viper” or “big picture” take a shot 😉😂 great content as usual!!
Nah I don't want to die
To get real drunk, do it for every ok!
and plug-o-bug-o
Wait wait can we add reset to that too?
tried that before and ran out before video ended :))
I've worked on many of these systems and have always wondered if they were undersized. I had a customer that said they washed it themselves on 2 different occasions and their equipment still wasn't working properly. I found the confetti that was for the new years party 7 months prior. So I don't think they cleaned them very well...
Don’t want to pay OT but will pay for a $4k compressor and lost product. Weird.
Penny wise, dollar foolish! The dollars are flying out the window but they know where every penny is. Not the first time you will see/hear of this nor will it be the last.
Ever had a bean counter brother in law? I have personal experience with this bizarre mindset. Why change the oil? That costs money! Why replace bald tires? That costs money!
Tax write-offs, thats all this is
delusional owners/managers. they're common in the industry
I heard a saying years ago and it still sticks with me to this day: "There's never enough money to do it right the first time but there's always money to do it a second time."
Definitely the best refrigeration TH-cam channel! Honest and great mechanic!
Love your videos been in the trade 7 years, 1 year maintenance, 3 year installs and 3 years of service worked with alot of older guys and your information is just as good as their's really appreciate your vids
Great videa. Watched all 15.39 but not a single ad came on. Thank you for this video!
I really enjoy your videos. As I live in an area where it takes an average of one and a half hours to get here from any HVAC repair/supply service. The cost of service just to drive here is outrageous as well. I am learning a lot and I have been able to service my 20+ year old Central Air unit and keep it working really well. I was afraid that it was gonna need replaced this year because I thought it was going out, but it works like a champ now after seeing that a lot of the cooling issues were the heat dissipation on the AC was clogged up, I didn't know that would be such an issue and cleaned it out. We have had a few days of 100+ degree temps too and no disruptions in cooling. Thank you for the informative videos.
Man for you I will watch the commercials from now on no more skipping the ad do you enjoy watching your videos I love the big picture diagnosis keep up the good work
We lost quite a few restaurants in the initial shutdown in Michigan. Now that some have reopened, they are all looking for the cheapest fix we can give them.
We continue to give the best advice possible, but it's frustrating that the restaurateurs are not making wiser choices.
My old boss tried and tried to get a simple fact through my head. "We are responsible to the customer. Not for the customer." It's a simple truth that I still struggle with after all these years, and even more today.
"We are responsible to the customer. Not for the customer." That is one of the best quotes I have heard in a while.
It blows my mind that they would not have you come out for their freezer. As a former restaurant manager, I’m more concerned about the money in the freezer than I am about paying someone overtime... Great Video as always
They're potentially risking writing off thousands of dollars in product as well as thousands of dollars of damage to the equipment to try and save a couple hundred bucks. It's the epitome of penny wise pound foolish.
Agreed !
You might want to see whose budget that stuff comes out of. I can believe a manager will risk $4K of corporate budget to save a few hindered off of his. Especially if his bonus is tied to his budget. Yes, sometimes people are stupid, but sometimes the system gives them incentive to be "stupid".
It looks hood on paper.
Honestly you have taught me so much about diagnosing and I’m a heavy truck mechanic. I have recently been trying to adopt the big picture mentality even though my coworkers have been making fun of it. All I got to say is that looking over everything that can cause the problem you are trying to fix and testing everything instead of guessing has dramatically improved my diagnostic ability ten fold
I'm not in the trade but still enjoy learning these insights into the behind the scenes details. Thank you for the content!
Good stuff.. ice teaching lesson for those. Thanks for sharing Chris.. be safe have a great night
Thanks, for your time. Brother your videos are part of my daily routine. Learning a lot.
Good job! They got real lucky regarding that compressor. Thanks.
My dad and his dad both were in the HVAC field. I've always been indoctrinated into the nu-calgon coil cleaner products, but today I placed an order for some of the Refrigeration Technologies Viper condenser and evaporator cleaners to try them out at the house and at the inlaws units. Long run-time season is upon us in NE Texas. Keeping that head down to spec operating range via clean coils was a key that my pop drills into my head to this very day. "If you don't schedule PM's for your equipment, the equipment will eventually schedule a service call..usually at the worst possible time, and at 10x the cost."
I love the content, and it's good to see someone else's work procedures and tools they utilize.
I worked in a place with a huge display cooler running a compressor the size of a coffee can because they wanted it low profile in the store front and in a year working there it got to safe temperature once for about an hour but the boss was too cheap to upgrade it so we as staff just ignored the fact the food was always at unsafe temperatures. It took being caught twice by a food inspector to finally do it.
THAT is when you make an Anonymous call to said Food Inspector at least 2-3 times a week until the Boss pulls his head out of his waste-disposal-orifice and upgrades the system.
Did no one explain to the Moron (Boss) that upgrading is FAR cheaper than a Food Poisoning/Wrongful Death Lawsuit and resulting Bad Publicity would be?
Man you are so smart when it comes to freezers and refrigerator and ac compressor
Ohhhh I love the look of that wiring so clean!
Yep, dealing with the public is a problem, I know I did it for years. And manufacturers, they try to get by like you said" ONE SIZE FITS ALL". I hope your customers know that you treat them fair and square. Keep up the good work.
You do such a great job of teaching. I admire your dedication to true quality work.
Hi Chris, so I am hooked on your video even though I fix laptops as my job. The way I see your business is out of sight out of mind from an end users point of view. These same people change the oil in their car, paint their houses, clean their gutters etc. you would think with the cost of food and having their equipment pulling down their business, that they would prescribe to having cleaning and proper maintenance on this stuff. What bunch of idiots. Like the mechanic says “ you can pay me know, or pay me later. “ Chris’s, keep up the awesome work. Your customers are lucky to have you. Neal
We have exact same situation here in France.... All the new builds scheduled for september have to be done mid August, but all maintenance cancelled in existing restaurants and I have to fix everything for yesterday charging nought... ah well at least I go to Arcachon and around almost everyday and eat for free :-D
I know it would be considered a botch but it would be easy to add another condensing core on the side panel just beside the existing one, if you could get your hands on one spare core like the smaller ones in the rack it would fit perfect since it already has the right length.
You would just have to cut the rectangular hole in the panel and braze it in series with the main one.
I know it sounds like a hack but i like it better than that swamp cooler...
Keep it up!
Edit: I see a problem in my solution, opening a hole there would reduce the amount of air passing thru the other cores. mmm
Great video.Thank u for the valuable tips u give.
Hey man I love your videos! I’m in the same trade as a apprentice and watching your videos really helps me with my trouble shooting and becoming a better tech. Much mahalo for the videos and the help!
By far, this video had some great content!
Only a couple months late to the party, but:
Swamp cooler pumps won't burn up from running dry; there's no seal on the wet end.
Yeah, it'll make some angry noises when it gets air in the impeller but that doesn't hurt it.
Great video! My brother is starting his first HVAC job as an apprentice and I bought a Veto bag as a gift with your discount.
I've been to a few jobs as a telecoms engineer where air con has failed in server rooms and been expected to try and resolve faults. I've always refused to work until it's fixed, funny how quick management then approve repairs.
You mean that a remote telco site at 122 degree air temp and equipment racks too hot to touch barehanded isn't good? Been there, done that. It's even better when you also have a UPS or DC plant system with lead acid batteries giving off enough vapor to cause your skin to tingle and eyes to water on top of the high temps.
Great video Chris. Something you didn't mention (or I'm too dumb to know otherwise) is the importance of PMs. The customer had this problem because of a dirty condenser (and the other slew of problems).
WOW!!! After reading about half of the Rules, Regulations of the "Discord" I laughed and closed it... Good Grief!
Good vid Chris ...Goes good with a nice cold beer ... Lol ...
I’m changing out two Trane rotolocs that were bypassing internally due to continuous lint plugging of the coil. They got weak and would bypass at just over 200psi (R22). I’m adding manual reset high pressure switches.
Another good example of big picture diagnosis. Great video bud!!
Could be an option to add a remote condenser. I've done just that several times in this situation over the years.
I like the swamp cooler to help pre-cool. Here in SoFlo, to install that, we would need a hurricane stand, engineering to secure it directly to the wood/metal trusses, (cutting through the roof), as well as securing the unit to the hurricane stand, mechanicl permit, and electrical permit, and a plumbing permit. Wish we could just screw it to a couple of 4x4s!!!!
In Florida the government owns you. Only going to get worse
Not that a swamp cooler really does much of anything in a humid climate like Florida. Dry climate for the win!
@@eggman9713 The only thing that swamp coolers do in the southern states is give people legionaires disease and grow toxic mold. Humidity is near 100% almost year round.
Thank you for your videos. Really helps pass time and learn new things!
I feel this pain working for many restaurants in my life and now for a major grocery company this heat is crazy ours has been going down alot or going into defrost a lot. Wish you worked for us love your videos or hell I'd even work for you as I've pretty much taking all of those things apart from the fan blades and such as most restaurants don't wanna pay for repairs or pay weekend pay lol so I've fixed many of them
On an additional note, with respect to high compression ratios, specifically on reciprocating compressors, excessively high head pressures can cause refrigerant vapor "blow by" to occur in the cylinder on the piston upstroke.Good work on your part, as usual.
Im amazed that compressor still works alright after pissing by like that for 3 days. Thats also the only acceptable use of a swamp cooler. I hate those germ infested boxes with a passion. They were very commonly installed on houses here in the 90s until inverter mini splits became affordable
It probably doesn't matter given how few of your clients actually do any PM (well, I guess you only show the ones who wait too long). Anyhow, I *did* want to mention the awesomeness of *linear drains* . We put one
in our *shower* , and it slows the flow so that the "debris" gets caught in the trench, allowing water to go down the drain hole, and to
clean it you simply remove the cover, and all the gunk is easily scoopable... I thought if this when I saw the one small drainhole for that entire tray.
Good job
Awesome work and thanks for the content stay stay and take care
Another question, in my area the servicing companies take care of the filter changes. Is there a law in CA that changes that?
I ‘watch’ the ads by turning the volume down and flipping the iPad over does that count?
Soon TH-cam is gonna need permission to the camera and make you watch the ad in its entirety.
@@FishFind3000 Or..or you could just pay 10 bucks a month for premium and save yourself the time!
Skip to the end, then press replay...No ad's
Great video you know your equipment was wondering we’re you get your training how long you been doing this? Thanks
not seen any video of any bypassing, very informative! so much to learn, but I see my knowledge improving day by day. just over 2 weeks until I pay my house off & will sign up for HVAC online classes
as for the ads, its appreciated, some IDIOTS will put 5 or more for a 15 min or so video, even a cooking channel, guess who will get pissed by second one within a few min & stop watching the video. but 1-2 depnding on length is great. 1 guy puts his ad the first few min, then nothing else, while a welder I watch, usually has his either at a high point of video, or just before his recap, but he only puts 1.
Another not about the commercials is they are starting to bypass ad blockers with static ads so that will help your revenue a bit too. Ad block users don't get the full video ads, static ads are now coming through.
So I had a question about all the different refrigerants that I see labeled on the equipment that you service. Would you be up to making a video about the differences in the refrigerants. Ex. R12,R134a, R22, R1234yf, R290,R404,R410a, etc.🙂
I know your a fan of viper and their cleaning products, their are alot to chose from and I don't know what to buy could you make a video on the equipment you use?
Those cables look so organized
I imagine a suitable HP-switch which gives a quiet alarm sound inside the freezer or blinking red lamp. Then costumer knows then it is time to get a PM-clean even if it runs "great". Can't be that expensive to route the cables and add that additional pressostat at the same time as system is vacuumed for other reason.
Customer would simply ignore the damned warning light . You can't help nor fix stupid .
Always is informative and interesting. THANK YOU!
13:00 Did they lose any product? Not sure what kind of product served, but a freezer full of product being lost and having to be restocked quickly seems like it would be expensive.
lol, you think they replaced any of that? :))))
Good point.
My food service career was pretty short and limited to fixing arcade machines, occasionally serving pizza, and waking up "the Mouse." Got kicked into a soccer game and so ended my food service career, and back injuries.
Did prep some hot wings for 3 hours one time.
Our make-up table at works sounds like it's bypassing pressure. Been sounding that way for over a year now.
let me guess, turbo air that's had the evap. coil replaced..... they always tend to make a loud boiling off sound afterwards due to changes :)
At 6:13 it looks like the 2 rightmost systems have the line cut to the dryers. That seems like it would let a bunch of junk in, making those systems unusable? Or am I jist misunderstanding what I am seeing?
Yeah good catch they are disconnected from the restaurant, the customer made some major system changes and installed self contained units downstairs...
Bought some murge it arrived 2 days ago. I LOVE IT!!!
What about the high head pressure switch?
Is that...a sprinkler head in the walk in freezer?
Yes, the cooler probably won’t be cold enough to put out a fire
Probably a dry system, typical for areas that may freeze.
was the the top of , i think the 6th filter dryer from the left disconnected and soldered off? Or am I seeing things.
Usually when you're working in a walk-in freezer it's broken and piss warm. The one I was in today was satisfied at like Minnesota in January and once it detected my shivering ass trying to do inventory in there warming things up it kicked on and went into blizzard without the snow on the back of my head causing me to have a brain freeze like drinking one of those 64oz big slurpees at 7-11 from the 90's too fast.
Equipment question: what are the larger lines you use for your manifold? Throw up a link. Really worth the upgrade for you?
Thanks for info
Man I just tried to get me a shirt but your out of my size. 2xl. I’ll keep checking back in. I love say big picture diagnosis to my fellow techs.
can you up the fan CFM through the rack, or are the fans down in speed some from weak caps.
Nice job and video
Thanks bud!! I will be going live on TH-cam this evening 7/20/20 @ 5:PM (pacific time) to discuss my most recent uploads and answer questions from emails, TH-cam comments, Facebook messages, and the Livechat come over and check it out th-cam.com/video/so96BjUGwvw/w-d-xo.html
I'm not a rack guy, but you said the clean coil pressure is good. From what I see it really did not change from initial gauge readings.
36/280 initial.
21/287 clean.
That 14PSIG make that much difference?
the initial reading was with the compressor internal bypass open and whistling refrigerant in a circle inside itself. so less liquid flowing and returning too hot and higher suction pressure because it's dumping excess back into itself. that means phase change isn't happening properly, the metering device cannot correct it and poor cooling results, the odd frost pattern on evap. coil when inside the unit. I'd guess it's been loosing ground and gradually climbing in temps since Friday when they admitted it started or was noticed
Why isn't it possible to add a second condenser for the freezer? Sort of stack them but leave space between them for air and cleaning porposes... Or even put a second fan in for that extra condenser even my window unit has issues sometimes in that department lol
Couldn't you install a high pressure cut-out to prevent the compressor from bypassing? Three failed compressors seems just a little excessive...
Can only do what the customer authorizes. A simple fix to an installer/mechanic is an unknown, extra expense to someone who doesn't have a clue about HVACR. My background personally is an electromechanical one by schooling and I work in telecommunications. Years ago while in the USAR as a kid, I had some exposure to refrigeration so while I don't know enough to work on it or have a lot of depth of theory, I can at least understand what's in front of me and a little bit of the how and why when dealing with the mechanics working on our systems at work.
Timothy Barney also makes me believe issues are more to do with sealed system non condensibles
@@utubedestroysmytime I would hope after three compressors it was evacuated right at least one of those time and I am sure all three. Like Chris said though, the condenser is undersized for the application.
And yeah, maybe they did pitch the high pressure cut off to the customer and they rejected it. I don't see how though, installing the cut off is much less than a compressor.... let alone three compressors! If they were worried about it kicking off and loosing cooling, then what when something like this video happens?
Good video by the way, as always.
The green switch on the discharge line from the compressor looks like an auto reset high pressure cutout. Some Carrier units I work on have a control that will lock out if the compressor cycles to often. So you could add something like that which would also catch rapid short cycling due to low pressure issues as well say if the liquid line solenoid fails to seal etc. Or just replace with a Manual reset high pressure control
I want to thank you! you always cheer me up and teach me things i never knew. Thanks to you i want to be an HVAC person! P.S. Awsome Video!
I've been watching your videos for a while now. I have a question regarding cleaning condenser coils. I assume you don't pressure wash them because of possible fun damage.
What is the most pressure you think you could use for cleaning them without damage? Sometimes the 60 psi or so on the city supply just doesn't seem high enough to do anything
To the younger new guys... that box will take some DAYS to get down to -10 box by time the product refreezes... umay get disch. air -18.. but the product has warmed up the weekend...again putting more stress on the hurting compressor..
They have a condencor unit for a refrigerator?
Those con coils looked like they had open sides on them. I don’t know, but wonder if closed sides would force air through the entire coil pulling out more heat. It seems like the path of least resistance would be to short circuit out the sides.
Moral of the story: Customer has to be diligent on maintenance, even more if the system is undersized. Cheaper to do PM than replacing major components
Always enjoy n Always informative
It could be "Hey, if we dump the bucks into equipment upgrades now, we can start depreciating or write-off the expense by other means and then if we need to sell-out we can justify asking for more money, than if we just sit around and pray and still have to sell". It might even be easier to get equipment loans at longer terms than it would be to get "operating expenses" money. And if they upgrade and manage to hang in there long enough they might be able to recover it all at a future date.
Seems natural...
How do you know if a compressor has an internal bypass? Would it be on the label?
gotta pay for a compressor because they can’t pay for overtime. gotta pay for a service call because they don’t pay for preventive maintenance. and what does it cost if the contents of that freezer spoil, or they have to shut down for a few days because they have no freezer...
Asked my wife if she wanted an HVACR shirt, she said she would wear one ONLY if it says 'the walk in cooler is down' with your HVACR trademark on it lol.. can you maybe do some of those or your usual quips?
stay safe
Is that a fire sprinkler in the freezer at 9:06?
It sure is!
Is the customer on a maintenance schedule or just call when they have issues? Nice video.
Won't that swamp cooler create humidity that will cause the condenser to get dirty sooner? Also would a high pressure cut out have been worth installing during the last compressure change?
Is it normal for commercial refrigeration components to malfunction or die as regularly as is described here and in other videos? I tend to think of recent residential equipment as being more or less guaranteed to fail frequently because of the consumer's cost constraints along with desperate competition to price for that while still making a buck, but don't commercial/industrial customers demand better?
Even as an informed amateur I noticed the different compressor sizes but apparently same sized condensers. Didn't realise the full implications though.
Hey i have a question for you.
What would you recommend would be the best cleaner for exhaust fan filters (stainless steel) from above a grill and two friers. Very oily
Obviously, the manufacturer failed to properly size the condenser for 110*F ambient air temperature. As mentioned in other comments, they should let you size and install a properly sized remote condenser on that system. If not, I would suggest installing a manual reset high-pressure control. Hopefully, doing that would not only get you out there to clean the condenser coil, it could save them from having to change out so many compressors. As always, another "big picture" resolution!
Hi, I watch your channel from UK. I have been looking at Trutech tools but unfortunately they do not deliver overseas. Is this correct? Regards Steve
These sorts of jobs i don't particularly enjoy. Wasn't right from the beginning, poor maintenance made it worse, customer doesn't want to do the real fix. When i go out and diagnose something i want to fix it once and for all. I know not everyone thinks that way. I've had workmates who like the money going out on overtime for easy fixes. I like my sleep better. Most of the time i can steer customers towards the real fixes though, and that's very nice. I'm also quite fortunate that i freely plan maintenance by myself. Things that need to work through the summer i do PM on in the spring, things that need to work through the winter i do PM on in the fall.
Need to get a hat. Hope they come in soon!
do you have a video explaining whats inside these magical black boxes called compressors? :)
It’s a common piston pump. Nothing special, same as any hydraulic pump
Your right about that cleaner.
Nice video
good Vid. Frankly i'm suprised that u have not gotten away from R-404A and Use a Lower Presure refrigerant in your area ( the Gates of Hell ) . Pt chart for 404a at 115 ambient is no good even with a clean coil. id Recommend not using 404 in your area and use a Refrigerant similar in pressure to R-22. i Recommend R-422B. i use it for Walk-in coolers and absolutely Love it for Medium Temp. i Would Have no quams about using it For Low Temp. and it's cheap now . price is coming down alot. u can reduce your head pressure by 100 psig in most applications. Your other option is Have a 2 Row condenser made to fit above the existing condenser slab. measure it up. have american coil inla make it for u.just screw ti to the top of existing coil. it looks like u have plenty of room. another option is add a ice machine Remote condenser across from unit and pipe it in. another option is next time u change the Compressor see if u can install one 1/2 ton smaller in same place barring that evap is not too big.
It is hard to upsell a repair so a unit can last 10 more years when they are not sure about next month .......
Be safe and make you are able to count to 21 when you get home every night .