I've worked at a few restaurants and fast food places and they all did that because they wanted to be cheap but saving money here is gonna cost them more later on
I work in IT and I see the same shit all the time, especially from our break-fix customers. Generally our contract customers are better about this, but I'm not sure how customer relationships work in the HVAC world.
I'm not fluent in all models of course. But I have yet to see a walk in that doesn't have a thermostat by the entrance. She knew. I wonder if it was the restaurant personel or the owners that put it off.
HVACR guy from Germany... honestly I'm a little glad to see that even half way around the globe we all have the same problems with customers and manufacturers xD
The word "hurry" is not in my work related vocabulary anymore, the boss says "can you hurry and....", I say "can you make my wallet heavier?", discussion ends.
Thats where the old "Good, Fast, Cheap" venn diagram comes in. You can have any 2 of the 3. But not all 3 at once. You can't rush, and do a thorough job.
"Hurry, the health inspector is here, and my employees have been fudging the temps so I have no idea how long the cooler's been acting up!" Perhaps I'm wrong, but I've worked in enough of these places to know that is a far more likely story than the cooler going tits-up _just as the inspector arrived_ - sure, it's possible, but the odds are slim.
I'm no HVAC guy, but I can recognize a person who has pride in their work and doesn't like to do shoddy job and makes sure it's done properly and the next person in mind who has to deal with their work. That's not so common anymore. I'm an electronics designer and sound technician.. .and I can recognize the mindset... keep at it! :)
"Under Promise, Over Deliver" Those are words to live by, in my opinion. I became very successful and built a business with that. I have also had people tell me, "We failed our inspection" but the truth is, its on them to make sure everything is on point, when it needs to be on point. I get it, we are all in this together to some degree, but if that manager goes on vacation, do you know? My guess is no, you don't. Now, with that said, I will still take into consideration, and have given a discount, or reduced cost, but that is my choice.
I really appreciate your videos. I've been watching now for about a year. I work on the electrical side of industrial automation and see many parallels between the types of work we do in terms of technical support and service calls. Being able to look over your shoulder and watch your problem solving process is awesome and has shown me a few different ways to look at things that I might not have thought about before. Thank you for the effort you put into making this content. You're helping and entertaining so many people with your channel. :)
that secondary valve you removed ir actually handy to replace the dryer, the king valve and secondary liquid line valve isolate the dryer which means you can replace it and I believe also has a port into the isolated point area which even lets you evacuate before opening the valves again.
I would actually install isolation ball valves with ports around driers on large systems if they didn't exist so that I could replace a carbon core drier with a standard drier without pulling the charge. It is such a time saver for burnout cleanups on large systems!
I did a job for the nastiest restaurant yesterday in their walk in cooler. Mold on the lettuce and walls and food stored in ways you wouldn't believe. I was fixing to call the health department but then they asked me to come back next week to look at some other units on the roof. Lol maybe I'll call after
see Chris this is where we differ the fan cycle control is suppose to be on the liquid line 1. Discharge is always higher 2.i want to control the pressure after the freon has circulated through the condenser. 3 to change anything simply close the reciever
On the service friendly aspect, I grew up with 2 guys, they are both engineers now, one for Whirlpool, the other was for Chevrolet, and I have had conversations on facebook with both of them, they both said the same thing, "We have computers now that tell us it works fine". sad to say, that is how they think, they let a computer think for them, rather than let common sense and reality come into play.
Not long ago i put fan cycling on a RTU for a server room for low ambient cooling. Had a 3 phase condenser fan motor. I set up everything correctly to maintain a 90° saturation and keep the evap from freezing up. Still the fan was on off on off constantly. Customer didn't want to pay for an economizer. Their maintenance guy was on the roof and watching the fan bang on off. He calls me and asks if that was good for the motor......i said no, but that is what you wanted to pay for. He didn't like it, neither did i. They ended up paying for an economizer to be installed. Lol.
So I fix things. Always have. Cooked, managed, purchasing, then worked for IBM Fixing things. Boeing, POS, registers, printers, servers. phones, Looking back on my varied career I wished I would have just taken refrigeration in my youth. Fascinates me, and I think I could have been good. Love your videos...
Again. This is why you always check your fridges and freezers. I have remote sensors, mechanical thermometers and the digital thermometers mounted in every one of them. Every Morning I check these temps and a couple times a day they are to be checked by other staff. This is how you never fail an inspection. Every Morning I take a walk around the restaurant and make a note of anything wrong. A few minutes of checks can save you a world of hurt.
The most hilarious part of this video is when you pull the sniffer out and say I'm going to check all of my brazed fittings after you've already put the charge back into the circuit!!! I needed that thank you 😊
Great watching, you know what you are doing,i worked in the refrigeration trade for 40y mostly in restaurants. I miss that smell that you get on your hands from a evaporator coil. I would love it when they called you out at night to fix the walk in freezer, they said it was at temp and few hours ago. But you saw the ice cream melted floor or 4 feet of ice on the evap coil lol.
Here in europe we use a 2 to 3 bar difference for fan switching. So 29 to 43 psi. You look up the pressure for 42°C condensation and use that as cut in for 1 fan and like 45°C for a 2nd fan
bean counters that never actually touch their product. sit in their nice little fancy offices and use auto cad. while we bust our asses and asking our selves, if them boys at the bean counting department were high when they made this.
Thanks for the thorough walk through of you thought process and thinking ahead for future service, there are things I’m picking up from you that I never got from those who trained me.
I had to work on 3 reach ins and a walk-in last night. Got home at 3am and it’s all because the health inspector showed up and threatened to shut them down 🙄
My take: If we make them hard to service, the field guys will either break something that will need fixing, or they will make it serviceable on there own. SO us designing badly is giving them job security, and all we get are complaints about it.. Ungratefull
It doesn't surprise me that she was upset. I get the same treatment with POS systems. Having the 2 fans cycle in that manner makes the system most efficient in the long run as you are not running both fans thus saving power. Just my 2 bits.
Nice Chris its all about the solid column of liquid to the expansion valve! I like how you left a open port for backup on discharge! For future use! Going to rewatch on importance of lead and lag condenser fan operation. Got my field piece probes haven't used them yet. Hopefully back to work soon? Measure quick !
Hi, Chris, I have to disagree that putting the thread lube on makes the torque incorrect, it is actually the opposite. The torque values are determined by the force that gets applied to the sealing surfaces, not the effort to turn the fastener. Applying the lube will give the proper sealing force and prevent galling and wearing out the threads which could lead to a failure. I'm not an HVAC tech, but I'm nerdy and am learning a lot and enjoying your production.
While that's true, many manufacturers write the torque specifications based on unlubricated threads. So lubricating the threads can get over torque conditions.
@@zacharysamenfeld2487 @FishFind3000 so they can sell more product and cost businesses more money because of unnecessary wear? You have to love planned life span. Then I might suggest using the lubricant with a little less torque?
once those disc type cycle switches go bad, I change them separate cycle switch and solder in tee, recover etc. since we would have to do that anyway, its a little more cost, but beneficial in the long run
Are hot work permits not required when you burn ?? If I use so much as a heat gun , I need permits . Guess that is the difference in working hvac vs industrial battery repair .
Looks like dual fan controls would make it very inefficient because with only one fan running it's going to pull most of the air though the fan that's not running instead of through the condenser. Wasting fan energy.
I almost got myself into trouble once by trying to cycle fans independently. You have to be very careful that the second fan doesn't spin backwards with only one fan running because PSC motor torque sucks and will actually start backwards if it's torque isn't enough to stop the motor and reverse the rotation. Typically it's not an issue if each fan has it's own venturi it sits in. My experience was on a 7.5 ton York split and the props don't have venturis because York sucks.
Another great video Chris , not sure why you felt it necessary to cut out the shut off valve surely leaving it in meant you have isolated both sides of the drier/sight glass?
Now when the filter dryer gets restricted he needs to evacuate the evaporator and lines.if there was no access valve just add one between the two king valves. How much would that cost more?
As always another very interesting video from you, thank you...One small point... The units were using R404A refrigerant a blend........ Sometimes recovering and reintroducing blends can cause performance problems,,, ... 407C in ACs was the terrible, , the gauge pressures appeared to be satisfactory but cooling performance was poor...
Up north we have head pressure control valves due to low ambient. Fan cycling is never a good way to control head. Way too much fluctuation. Shortens life of compressors.
Another thought, considering the service call was triggered by a dirty condenser - suppose the fan control could also reverse direction cyclically and/or periodically. Might this help to keep the condenser clean by blowing out dirt and debris from the other side, each time it changes airflow direction?
Couple thoughts, did you consider just installing a headmaster instead of the fan cycling controls? Receiver looks generally large enough. Also with pipe insulation outside, I’m starting to wonder why it’s the norm for it to be unprotected/uncovered. It obviously gets just trashed from being in the elements. I feel like it should be typical to cover, like with the white plastic cover for instance.
Since king valve stopping you from recovering at receiver in pump down, why not just valve down other liquid valve with Allen key and still have access to king valve pressures?
This guy Chris is THE GOAT 🐐 in HVACR. Love the videos keep them coming man. Wish I can work for you. It would be an amazing learning experience with you as teacher 👍🏻.
On the high pressure protection, I think some standards association don't allow shrader under the protection since it can "fail" where the depressor slips next to the valve and essential renders the high pressure protect useless. This isn't the same on fan cycling/low pressure as those protect the equipment from breaking down as opposed to the high pressure which is a safety concern.
That's really good to know. I often see hoses with depressor on rack without Shrader... And the depressor break and block the control from reading. And that's factory on multisystem parrallel rack. But I still see new systems shipped with a hose / depressor / Shrader valve on the HP safety control such as Keeprite, etc.. Thank you for the infos :)
I like how you set that one up but I was hoping you would leave 1 fan on with the secondary on a pressure switch. But with the inrush of current starting the compressor and a fan, your way is more efficient. Ohh and don't let that manager get to you. They have to blame someone for when they weren't paying attention.
Hmmm The first thing to try would be just running one fan on the switch to cycle and see how that performed. If it really needed additional (which I doubt) control then a proper FSC should have been fitted to control both fans at the same time. IIRC these T should have a copper washer for them to avoid brass to brass . You've introduced additional leak points with these new connections especially using flares which are known to be the most likely point to leak on a system.. Worse they are on the discharge which is the pipe that suffers most expansion and contraction.
Thanks Chris, good troubleshooting story. When you say "I talked to the customer" do you (in general) mean the corporate maintenance office or is it ever with the staff there at the facility? Obviously for single-user accounts it would be the owner there...what percentage of your accounts are corporate vs.single-facility? Happy Easter!
For us the site manager is allowed to approve repairs up to certain dollar amount and anything over it they call or email for us. If the main office needs a written repair quote we send it. Sometimes we are pre approved for repairs under X dollar amounts
She failed her inspection as she hasn’t had preventative maintenance to keep her coils clean or monitored her box temp closely enough to have called you out earlier to resolve it.. none of which is your issue!!
Good video as always, but with you guys having the warmer Cali temps why not just cycle one fan motor? And to each his own but I despise flare fittings have you used the zoom lock dryers?
For tne commercial own chains have it figured in their budget every year for yearly or monthly cleaningsand inspections. Also they are quick to approve big repairs. Small business owners want it Frankenstein to work and won't do many repairs unless it is broken and they want it fixed. With them it's always why can't you fix it now, when we have told them for a long time it is going to fail. Small business always have excuses and always pay late
@@HVACRVIDEOS nylog/locktite they aren't lubricants, they are thread glue, designed to prevent threads from vibrating loose. They are essentially the same thing, just slightly different chemical make up to prevent patent infringement.
Nylog is poe oil with a thicker viscosity, it is most definitely not a thread glue it never gets hard, when applied properly to flare nuts it acts as a lubricant.
Customer was probably just super-stressed and didn't know where to blow off, so it's not really something to be concerned with. How about a VFD drive on the fans? Probably overkill.
Anyone else thought that the bitchin clouds bit was hilarious and a nice change? Haha. How was the one condenser so dirty when the other wasn't? It looks like a lack of attention during maintenance from my inexperienced stance.
Storm .... as I recall, this guy seems to have a fair amount of customers who don't do regular PM on the equipment, especially since Covid. That means they are only fixing what's broken.. and who knows how long that is between visits.
I am not an expert but it think that the service valve that you removed it would help to change the dryer without recovering the charge by closing both the service valve and the king valve
You need to get here right now!! The box has been acting up for the past 3 months, but now the inspector is here!! Customers will never change....
Exactly
I've worked at a few restaurants and fast food places and they all did that because they wanted to be cheap but saving money here is gonna cost them more later on
I work in IT and I see the same shit all the time, especially from our break-fix customers. Generally our contract customers are better about this, but I'm not sure how customer relationships work in the HVAC world.
"Ignorance on your part does not create an emergency on my part"
"I failed my inspection." Translation "I don't check my temps until things go drastically wrong."
Exactly what I was thinking too.
"I don't check Temps till my food is growing a fungi forest " should be the quote of the day
You took the words out of my mouth...
At a restaurant? Where food is served?
I'm not fluent in all models of course. But I have yet to see a walk in that doesn't have a thermostat by the entrance. She knew.
I wonder if it was the restaurant personel or the owners that put it off.
Lol, I hate when I'm sent to a call where the health inspector is waiting. Especially when the fridge has probably been up in temp for months!
First thing I thought just by reading the title haha
It doesn't bother me, I show them why it's down and will take time. Emergency on their part due to neglect is not a Emergency on my part.
@@zack9912000 damn right bro, they think we give a f about their service lol no we just give a f if the unit works
Then refuse to go ! Oh damm you just care about the money huh !
@@gowdsake7103 Yeah, it's called running a business and keeping the lights on and food on your plate.
HVACR guy from Germany... honestly I'm a little glad to see that even half way around the globe we all have the same problems with customers and manufacturers xD
It’s not often people get upset with you arriving early.
“I’m mad that a service provider is here to solve my problem.” Lmao it makes no sense bro.
Until you get married
Maybe se was actually so happy that she got mad or she was mad and happy add the same time
A tip for the hard to reach with wrench-spots; check out "crows feet". Ratchet mounted fork wrench. Don't know if it will help you, but it might.
That was not meant as a reply. I was in a hurry and distracted ;)
The word "hurry" is not in my work related vocabulary anymore, the boss says "can you hurry and....", I say "can you make my wallet heavier?", discussion ends.
my boss gets pissed and tell me to do it fast and right, then gives me shit says its my fault when things don't work out
Thats where the old "Good, Fast, Cheap" venn diagram comes in. You can have any 2 of the 3. But not all 3 at once. You can't rush, and do a thorough job.
Totally stealing this
@@redthorne2836 same, lol
I should try this on my boss(es).
"Hurry, the health inspector is here, and my employees have been fudging the temps so I have no idea how long the cooler's been acting up!" Perhaps I'm wrong, but I've worked in enough of these places to know that is a far more likely story than the cooler going tits-up _just as the inspector arrived_ - sure, it's possible, but the odds are slim.
I'm no HVAC guy, but I can recognize a person who has pride in their work and doesn't like to do shoddy job and makes sure it's done properly and the next person in mind who has to deal with their work.
That's not so common anymore. I'm an electronics designer and sound technician.. .and I can recognize the mindset... keep at it! :)
"Under Promise, Over Deliver" Those are words to live by, in my opinion. I became very successful and built a business with that. I have also had people tell me, "We failed our inspection" but the truth is, its on them to make sure everything is on point, when it needs to be on point. I get it, we are all in this together to some degree, but if that manager goes on vacation, do you know? My guess is no, you don't. Now, with that said, I will still take into consideration, and have given a discount, or reduced cost, but that is my choice.
I really appreciate your videos. I've been watching now for about a year. I work on the electrical side of industrial automation and see many parallels between the types of work we do in terms of technical support and service calls. Being able to look over your shoulder and watch your problem solving process is awesome and has shown me a few different ways to look at things that I might not have thought about before. Thank you for the effort you put into making this content. You're helping and entertaining so many people with your channel. :)
Thanks bud
I love so much doing these clean/small upgrades on units that have been working wrong for so many years... Really satisfying.
👌
that secondary valve you removed ir actually handy to replace the dryer, the king valve and secondary liquid line valve isolate the dryer which means you can replace it and I believe also has a port into the isolated point area which even lets you evacuate before opening the valves again.
I would actually install isolation ball valves with ports around driers on large systems if they didn't exist so that I could replace a carbon core drier with a standard drier without pulling the charge. It is such a time saver for burnout cleanups on large systems!
I did a job for the nastiest restaurant yesterday in their walk in cooler. Mold on the lettuce and walls and food stored in ways you wouldn't believe. I was fixing to call the health department but then they asked me to come back next week to look at some other units on the roof. Lol maybe I'll call after
How many people did you make sick did you ever think that ?
That mini rant about the manufacturers not thinking about the service techs.. I felt that.
see Chris this is where we differ the fan cycle control is suppose to be on the liquid line
1. Discharge is always higher
2.i want to control the pressure after the freon has circulated through the condenser.
3 to change anything simply close the reciever
On the service friendly aspect, I grew up with 2 guys, they are both engineers now, one for Whirlpool, the other was for Chevrolet, and I have had conversations on facebook with both of them, they both said the same thing, "We have computers now that tell us it works fine". sad to say, that is how they think, they let a computer think for them, rather than let common sense and reality come into play.
Not long ago i put fan cycling on a RTU for a server room for low ambient cooling. Had a 3 phase condenser fan motor. I set up everything correctly to maintain a 90° saturation and keep the evap from freezing up. Still the fan was on off on off constantly. Customer didn't want to pay for an economizer. Their maintenance guy was on the roof and watching the fan bang on off. He calls me and asks if that was good for the motor......i said no, but that is what you wanted to pay for. He didn't like it, neither did i. They ended up paying for an economizer to be installed. Lol.
So I fix things. Always have. Cooked, managed, purchasing, then worked for IBM Fixing things. Boeing, POS, registers, printers, servers. phones, Looking back on my varied career I wished I would have just taken refrigeration in my youth. Fascinates me, and I think I could have been good. Love your videos...
Again. This is why you always check your fridges and freezers. I have remote sensors, mechanical thermometers and the digital thermometers mounted in every one of them. Every Morning I check these temps and a couple times a day they are to be checked by other staff. This is how you never fail an inspection. Every Morning I take a walk around the restaurant and make a note of anything wrong. A few minutes of checks can save you a world of hurt.
3:43 I have those moments too 🤣
Those clouds are a trip
The most hilarious part of this video is when you pull the sniffer out and say I'm going to check all of my brazed fittings after you've already put the charge back into the circuit!!! I needed that thank you 😊
Great watching, you know what you are doing,i worked in the refrigeration trade for 40y mostly in restaurants. I miss that smell that you get on your hands from a evaporator coil. I would love it when they called you out at night to fix the walk in freezer, they said it was at temp and few hours ago. But you saw the ice cream melted floor or 4 feet of ice on the evap coil lol.
I like the way you mounted the new controls, I’m going to start doing that.
@15:16 lovely example of how you controlled the temperature of that joint to wick the braze up into the area you wanted.
Here in europe we use a 2 to 3 bar difference for fan switching. So 29 to 43 psi. You look up the pressure for 42°C condensation and use that as cut in for 1 fan and like 45°C for a 2nd fan
bean counters that never actually touch their product. sit in their nice little fancy offices and use auto cad. while we bust our asses and asking our selves, if them boys at the bean counting department were high when they made this.
Leave the 2nd liquid fitting next time. Just makes it really easy to check pressure drop across the drier.
Hmm let's see the old saying " Failure to plan on your part does not constitute a emergency on mine"
Customers never change residential or commercial
Excellent work and thanks for sharing this with us take care
Thanks for the thorough walk through of you thought process and thinking ahead for future service, there are things I’m picking up from you that I never got from those who trained me.
I had to work on 3 reach ins and a walk-in last night. Got home at 3am and it’s all because the health inspector showed up and threatened to shut them down 🙄
They don't make machines to be serviced, they make machines to be replaced.
The reason manufacturers don’t make them serviceable, they want you to replace them with a new unit once they break down
Yeah you are right!!
Looks more serviceable than most cars/ machines if worked on. Looks like you have access to most of the tings with little disassembly.
@@eeuwedevries that reminds me of my dad's old car, an opel meriva where you almost had to pull the engine out to change the light bulbs
My take:
If we make them hard to service, the field guys will either break something that will need fixing, or they will make it serviceable on there own.
SO us designing badly is giving them job security, and all we get are complaints about it.. Ungratefull
@@Eledore not wrong about the job security.
It doesn't surprise me that she was upset. I get the same treatment with POS systems. Having the 2 fans cycle in that manner makes the system most efficient in the long run as you are not running both fans thus saving power. Just my 2 bits.
Nice Chris its all about the solid column of liquid to the expansion valve! I like how you left a open port for backup on discharge! For future use! Going to rewatch on importance of lead and lag condenser fan operation. Got my field piece probes haven't used them yet. Hopefully back to work soon? Measure quick !
Hi, Chris, I have to disagree that putting the thread lube on makes the torque incorrect, it is actually the opposite. The torque values are determined by the force that gets applied to the sealing surfaces, not the effort to turn the fastener.
Applying the lube will give the proper sealing force and prevent galling and wearing out the threads which could lead to a failure.
I'm not an HVAC tech, but I'm nerdy and am learning a lot and enjoying your production.
While that's true, many manufacturers write the torque specifications based on unlubricated threads. So lubricating the threads can get over torque conditions.
Yea, many manufactures say don’t lube threads. Unless the explicitly say you must like some head stud bolts.
@@zacharysamenfeld2487 @FishFind3000 so they can sell more product and cost businesses more money because of unnecessary wear? You have to love planned life span.
Then I might suggest using the lubricant with a little less torque?
once those disc type cycle switches go bad, I change them separate cycle switch and solder in tee, recover etc. since we would have to do that anyway, its a little more cost, but beneficial in the long run
Use the yellow hoses instead of the red n blue one. 10x faster...I use the yellow for everything 😉
Are hot work permits not required when you burn ??
If I use so much as a heat gun , I need permits . Guess that is the difference in working hvac vs industrial battery repair .
Really nice solution with the two fan cycles
Nice job! You worried me on the first sweat but then I remembered you know what your doing.
Very good. Alot of learning for the new jack.
Great job Chris !!
Looks like dual fan controls would make it very inefficient because with only one fan running it's going to pull most of the air though the fan that's not running instead of through the condenser. Wasting fan energy.
Nah it's got a baffle in between the fans
I almost got myself into trouble once by trying to cycle fans independently. You have to be very careful that the second fan doesn't spin backwards with only one fan running because PSC motor torque sucks and will actually start backwards if it's torque isn't enough to stop the motor and reverse the rotation. Typically it's not an issue if each fan has it's own venturi it sits in. My experience was on a 7.5 ton York split and the props don't have venturis because York sucks.
Great point!!
@@HVACRVIDEOS It was only that one isolated incident for me but I'll never forget it, that's for sure!
Another great video Chris , not sure why you felt it necessary to cut out the shut off valve surely leaving it in meant you have isolated both sides of the drier/sight glass?
Now when the filter dryer gets restricted he needs to evacuate the evaporator and lines.if there was no access valve just add one between the two king valves. How much would that cost more?
As always another very interesting video from you, thank you...One small point... The units were using R404A refrigerant a blend........ Sometimes recovering and reintroducing blends can cause performance problems,,, ... 407C in ACs was the terrible, , the gauge pressures appeared to be satisfactory but cooling performance was poor...
Up north we have head pressure control valves due to low ambient. Fan cycling is never a good way to control head. Way too much fluctuation. Shortens life of compressors.
Another thought, considering the service call was triggered by a dirty condenser - suppose the fan control could also reverse direction cyclically and/or periodically. Might this help to keep the condenser clean by blowing out dirt and debris from the other side, each time it changes airflow direction?
The HVAC School App has a recovery tank fill calculator in it. It takes the thought out of it.
Hi HVACR videos how are you?
Couple thoughts, did you consider just installing a headmaster instead of the fan cycling controls? Receiver looks generally large enough.
Also with pipe insulation outside, I’m starting to wonder why it’s the norm for it to be unprotected/uncovered. It obviously gets just trashed from being in the elements. I feel like it should be typical to cover, like with the white plastic cover for instance.
Since king valve stopping you from recovering at receiver in pump down, why not just valve down other liquid valve with Allen key and still have access to king valve pressures?
Just a thought after fact, regardless great repair!
Love the fast changing colours on the pipes when brazing, looks pretty sick
This guy Chris is THE GOAT 🐐 in HVACR. Love the videos keep them coming man. Wish I can work for you. It would be an amazing learning experience with you as teacher 👍🏻.
On the high pressure protection, I think some standards association don't allow shrader under the protection since it can "fail" where the depressor slips next to the valve and essential renders the high pressure protect useless. This isn't the same on fan cycling/low pressure as those protect the equipment from breaking down as opposed to the high pressure which is a safety concern.
It is a UL requirement that the high pressure safety cannot be “valved” off.
That's really good to know.
I often see hoses with depressor on rack without Shrader... And the depressor break and block the control from reading.
And that's factory on multisystem parrallel rack.
But I still see new systems shipped with a hose / depressor / Shrader valve on the HP safety control such as Keeprite, etc..
Thank you for the infos :)
We put our Conds. Fan switches on the Liquid Line to use it like a Head Master. Since we don't want the Liquid Line Pressure to go to low.
This is why I don't eat at restaurants anymore.
I like how you set that one up but I was hoping you would leave 1 fan on with the secondary on a pressure switch. But with the inrush of current starting the compressor and a fan, your way is more efficient. Ohh and don't let that manager get to you. They have to blame someone for when they weren't paying attention.
Hmmm The first thing to try would be just running one fan on the switch to cycle and see how that performed. If it really needed additional (which I doubt) control then a proper FSC should have been fitted to control both fans at the same time. IIRC these T should have a copper washer for them to avoid brass to brass . You've introduced additional leak points with these new connections especially using flares which are known to be the most likely point to leak on a system.. Worse they are on the discharge which is the pipe that suffers most expansion and contraction.
I will discuss this on my Livestream this evening on UA-cam 4/5/21 @ 5:PM (pacific) come check it out ua-cam.com/video/zXI_u_jKMSg/v-deo.html
Nothing is easily serviceable anymore, welcome to commercial refrigeration 🤣 great professional work as usual!
Automotive is the same, change a headlight bulb in a GM vehicle lately?
heck of a lot of rattling going on while you're braizing there, Chris. Might want to get that looked at.
Thanks Chris, good troubleshooting story. When you say "I talked to the customer" do you (in general) mean the corporate maintenance office or is it ever with the staff there at the facility? Obviously for single-user accounts it would be the owner there...what percentage of your accounts are corporate vs.single-facility? Happy Easter!
For us the site manager is allowed to approve repairs up to certain dollar amount and anything over it they call or email for us. If the main office needs a written repair quote we send it. Sometimes we are pre approved for repairs under X dollar amounts
8:50 seems like you could benefit from some flare nut box end wrenches
8:57 : "OuR DeIceS dOn'T bReAk AnD dOn'T nEeD SeRvIcE!"
Aww... poor red wire. It may touched by torch (
just want to ask if you left the system running the same way after cleaning the condenser would it be a problem great job professional work
She failed her inspection as she hasn’t had preventative maintenance to keep her coils clean or monitored her box temp closely enough to have called you out earlier to resolve it.. none of which is your issue!!
Never use a schrader core on a high pressure safety control.
What about Fan Cycling AND Head Pressure Control in the same system? Say your OWN system??
Only thing is I would have put the dryer and sight glass down on the horizontal and got it away from the receiver so u can access the valve better
Copeland suggests fan cycle control on only one fan not both fans
I remember those Days when I worked for Outback steakhouse as Mechanical Maintenance.
your not a fan of the fan?
random cut away for cloud coverage, priceless
And you have to leave the liquide vale so you can replace the drier and you don’t have to vacuum the whole Installation
Why didn’t you change the high pressure switch to a manual reset one? Who know what damage that compressor went through cycling on and off.
Good video as always, but with you guys having the warmer Cali temps why not just cycle one fan motor? And to each his own but I despise flare fittings have you used the zoom lock dryers?
Do you see more maintenance issues with privately owned restaurants than commercially owned chains?
For tne commercial own chains have it figured in their budget every year for yearly or monthly cleaningsand inspections. Also they are quick to approve big repairs.
Small business owners want it Frankenstein to work and won't do many repairs unless it is broken and they want it fixed. With them it's always why can't you fix it now, when we have told them for a long time it is going to fail. Small business always have excuses and always pay late
I wonder if the weird fan cycling may have been running them excessively and contributed to the dirty condenser?
No, they ran 'excessively' in your words because of the condenser blocking up. Cause and effect
Sorry you put the vent switches in the wrong place. They should be in the liquide line.
Great video 😉
Hope that chem (Hazmat) does not end up in the storm drain. All it takes is 1 drop for violation. Kommiefornia
Your helper does a nice job with the camera.
I just noticed you have 100K+ subscribers - CONGRATS!!! Keep up the great work!
Thanks bud!
this is job been working for hvac cooles keep it up
👍🥃🥃🍺🍺🍺
Happy Easter ! 🐇
Stay safe.
Retired keyboard super tech.
Wear your safety glasses.
Locktite is not lubricant. It's glue intended for use with metal. Just thought I'd point out that egregious mistake.
Huh? I didn't use any lock tite, what am I missing here?
@@HVACRVIDEOS nylog/locktite they aren't lubricants, they are thread glue, designed to prevent threads from vibrating loose. They are essentially the same thing, just slightly different chemical make up to prevent patent infringement.
Nylog is poe oil with a thicker viscosity, it is most definitely not a thread glue it never gets hard, when applied properly to flare nuts it acts as a lubricant.
Customer was probably just super-stressed and didn't know where to blow off, so it's not really something to be concerned with.
How about a VFD drive on the fans? Probably overkill.
Super stressed ? I would have told em to fuck off I am buzy
Great job and video like always
Is that a reclaim or pump down cylinder you used to do the recovery?
i lost count how many times he said FAN
Anyone else thought that the bitchin clouds bit was hilarious and a nice change? Haha.
How was the one condenser so dirty when the other wasn't? It looks like a lack of attention during maintenance from my inexperienced stance.
Storm .... as I recall, this guy seems to have a fair amount of customers who don't do regular PM on the equipment, especially since Covid. That means they are only fixing what's broken.. and who knows how long that is between visits.
I will discuss this on my Livestream this evening on UA-cam 4/5/21 @ 5:PM (pacific) come check it out ua-cam.com/video/zXI_u_jKMSg/v-deo.html
Never understood fan cycling... Why not reject as much heat as possible for efficiency?
I am not an expert but it think that the service valve that you removed it would help to change the dryer without recovering the charge by closing both the service valve and the king valve
I will discuss this on my Livestream this evening on UA-cam 4/5/21 @ 5:PM (pacific) come check it out ua-cam.com/video/zXI_u_jKMSg/v-deo.html
That's a bummer. Seems like it's status quo in the resturaunt business.
"BITCHEN CLOUDS" is my favourite segment on this video.
The suns not as far away as they say....crepuscular rays