I am retired now, but after working with chillers for over 40 years I thoroughly enjoyed watching your video. Thank you for sharing. Enjoy your career while you can. I am sure you are top in your field.
I’ve been in the business for thirty plus years as a commercial industrial journey man and in my eyes you are one of the smartest well rounded hvac tech and hope your being compensated accordingly 👍🏻👍🏻
If you would like to feel like you know absolutely nothing about anything watch this video! Thank you I’m looking to learn chillers, your my guy now!!!
This guy is very very good at explaining the systems on the chiller in pretty good detail without overwhelming the viewer with information they might not know. This is one of the best chiller videos I've seen on TH-cam. Good job I hope to see more videos like this from you.
ive been operating steam turbines and electric chillers over 35 years we actually have this YK CENTRIFUGAL in my building in NYC and i really enjoyed this video its is a great refresher for me !! thx
I've been working on Chillers since they were made from wood , nice to see the young guys stepping up and learning to be a true chiller Mechanic, good luck to this young man. Al Local 725 Miami, FL. Retired
Outstanding video and explanation Holden. I haven't ever had the privilege to get my hands on one of these yet. Hopefully i will one day. So much to learn, and thats what drives me to learn more. I hate not knowing how something works and how it is supposed to work.....so i study up and get the knowledge. Your channel is top notch and so are you.
Love the way you explained York chillers! I'm an operator who deals with the chilled water system and many other things. Learning my systems help me troubleshoot and explain the issues to technicians making their job easier.
Was also wondering if you've seen more issues with approach temperatures with chillers at the end of the leg for return water or chillers that are on stand-by for too long.
@@johnnycarson67 sorry I forgot I made this comment, oops. We use R134a Refrigerant for our Chillers (Model YK MaxE). Our chilled water temperature is designed to be at 44°F. Pushing about 6,000 - 8,000 Tonnage during production.
Excellent tutorial, brother. Just landed a gig with a hospital and all of our Chillers are York. I’ve been watching your training videos and taking notes. Much appreciated.
I have a YK course at chilleracademy.com if youd like a full understanding of YK Operations. Working on adding a complete oil section and troubleshooting section to the course. All updates are provided at no additional costs.
Nice piece of equipment. The only chiller I have experience on is a 100 ton Carrier. I love the display on that York. The Carrier had no info screen, only blinking LED indicators you had to count flashes for code numbers.
Great peice of mechinary and technology. And very well explained. Have a small question on the cooling system for the electronic panel. Why would york take the risk of having having the cooler inside the panel.if it's a cooler there is definitely water involved, which has a possibility of leaking out.
You are a very highly skilled chiller technician. Hope you consider teaching classes in HVAC apprenticeship programs, if not already doing so! You explain the processes of the machine very clearly and so one may comprehend. Thank You!
Great video, I work on a lot of Chillers in South Eastern Wisconsin, have had some factory training on very little of these machines, so it helps to get this type of info. THANKS!
Great video Haven’t run a chiller in a 7 years . Studying for my nyc steam practical . Fill in a worm hole found this vid and appreciate it . Thank you new follower . 🤝
Legit content, I just took over a building with 4 York water cooled chillers. I have a up hill climb, coming from primarily Carrier, and Trane water cooled and roof top air cool.
Wow I stumbled upon this video looking for some insight since I'm soon taking the FDNY test and boy is this one great. Thank you so much for all the info bro you are doing great keep going.
Hi, Im having some issues on a YORK YMWH series, its got two solenoids for the slide valve positioning, and Im not getting 110v on the Load side, traced fault to a relay wich 24v coil is not getting 24v, any advise as to where this 24v comes from,Ive traced the wires from A1 and A2 on the relay but it goes to a armoured cable wich leads out of the panel and onto a cable rack and at the moment unaccessible, the main power comes from a panel in the plants MCC the motor feeds from here and the vsd is also mounted in this panel inside the mcc, does the relay also feed from there?
Awesome video. I work for the factory with JCI as a Journeyman. Your references are pretty spot on. I've been learning about this machine for a few months now. I have more experience with Trane & carrier chillers. Is it possible to pump down the refrigerant all in one barrel (expressly the evap) to repair a leak on the liquid line?
The stall detector voltage doesn’t monitor temperature. It monitors pulses coming from the discharge pressure transducer and compares them to the condenser pressure.
Your correct Stanley. The stall detector is a pressure transmitter with a very fast response time. Almost like a microphone but for high pressure. It listens for the stall. Certainly isn’t temperature
@@kc5vgw Correct, Carriers with Variable diffusers work the same way, they "look" for pressure fluctuations, not temperature. Stall preceeds surge, its a very complex dynamic where blade speeds create flow separation, "turbulence" that is picked up by the pressure sensor, as a response VGD moves to attach the flow and move the compressor away from surge. Again is a very complex area of centrifugal compressor operation best left for engineers to figure out, on the tech level we just need to make sure it works as per logic of operation and that everything is calibrated. It can get confusing very quick! It is of particular importance in variable speed compressors.
I had a couple of millennium York screw chillers , these look similar but yet not If I recall they had 440 lbs of 22 .good machines until they weren’t.
Do these machines have a purge system? You said it was a high pressure machine. Is the evaporator running a positive pressure? I guess if it is, you wouldn’t need the purge. Most machines I was familiar with ran in a pretty good vacuum.I did have one high pressure carrier system that was multi stage, high speed, and ran R22. Have you ever worked on a Carrier Flowtronic air cooled chiller? Those were the biggest POS Machines ever made. That was back in the 90”s. I did work on some carrier 5H120 recip chillers, some electric, and some with natural gas engines.
Hello friend. My name is Jônatas, I'm from Brazil and I'm always watching your videos because of the great content. Could you please guide me in the best possible way for the tests when the Gate Driver or Gate Phase A error occurs
I work for an oem Fluid Chillers Inc. I'm wondering if any of these systems you work on have a trending or timeline graph for the pressure transducers, temperature sensors, and circuit Transformers. Also speed of variable fans and electronic expansion valve positions. We use Schneider plc's and I'm trying to incorporate smart monitoring as a test, monitoring and diagnostic tool, but it has to have extensive trending capabilities.
The problem is most mechanics in the field never get a chance to work on centrifugal chillers. Even the factory only allows a selected group to work on centrfugals
I have a question, I have two Chillers Yorks the same as the one in the video, but one of them goes into alarm because the water is above 65 degrees Fahrenheit and triggers the "Position MBC-Z12" alarm, after a weekend. They don't work but I turn on another cooler and after the temp drops below 65 degrees Fahrenheit it works fine, do you have any comments on why this may be happening? Thanks
HI! quick question. For those VFD Oil pumps, when you bypass the drive to send power straight to the motor. would that indicate a bearing issue or something to tell you the motor is on it's way to needing service or replacement?
Thanks man for this informative vedio. I have a question if you allow me please: I was recently assigned in a chiller plant with no experience in chiller. We have almost the same YORK chiller arrangement. The question is : For some reason one of the chiller lube oil temprature keep increasing till hit 80 degree celcius and then trip. Lube oil level is good , chiller is brand new and being online for only few months. Any tips please?
@@kc5vgw Thanks mate for your info. In fact,York Chiller technician guy came to site did troubleshooting he came to conclusion I quote: . “We Checked the oil cooling TXV found there is difference temperature in inlet, outlet its was malfunction need to be replaced” “ Freon needs to be top-up”.
Have you seen any failures due to fouling of the VSD cabinet cooling loop? Looking at an issue with a YK Chiller that had inhibitor changed out yearly, but after year 3, the Harmonic Filter (and a few other components) fried. Ended up bypassing the harmonic filter. Wondering if you have seen something similar in other York YKs.
I personally haven't but I know its a real issue. SUPPOSEDLY if you were doing the inhibitor annually with the blue inhibitor it isnt supposed to. Really wonder if you have an environmental issue.
@@HVACTIME Thanks for the reply! The other thing that baffles me is there is a series of alarms that SHOULD trigger if there is an issue with heat. The cabinet itself, and 2 different control boards inside the cabinet all have high temperature alarms built into them, but we received no error messages.
On the small side could be a office building or condominium. On the large side a district loop serving a portion of a city district or manufacturing facility.
@@HVACTIME you are right brother! eventually it is moving in that direction to have dominance and a monopoly rule. I am not sure if they are legally even allowed to do that. If you are qualified technician that shouldn’t be an issue if they ask you for your licensing to ensure it is a qualified technician. Thank you for your input and you are doing great and an awesome job brother. Just to let you know there are lots of respect from tech all across the world for your mentoring. Peace
And why the level meter is on condenser? Because the level of evaporator is important for working machine in good situation. Why they dont put the level meter sensor. On evaporator?
Because they want a liquid seal on the sub cooler. There is a plate over the sub cooler bundle. If you get vapor under it then you have noise, turbulence, instability, and high oil temps as the oil cooler won’t be as effective. This applies on the YK. Yt, different outcome but they want the liquid seal
Thanks for this video, it really helped a lot! Do you happen to have any videos on York Steam Turbine Centrifugal Chillers? The exam I'm taking in a few months is on the YST. As for this video, am I correct in saying that this is NOT a reciprocating system? It's an electrical powered York?
The "new/better" heat exchanger by Toshiba Japan for So Cal Edison's San Onofre Nuclear power station fail after one year because of rattling tubes in their support brackets. They closed the generation plant after thatF--k up.
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I am retired now, but after working with chillers for over 40 years I thoroughly enjoyed watching your video. Thank you for sharing. Enjoy your career while you can. I am sure you are top in your field.
Chillers been around for that long!?
@@LazyNinjass Chillers were the first large scale mechanical cooling machines
I’ve been in the business for thirty plus years as a commercial industrial journey man and in my eyes you are one of the smartest well rounded hvac tech and hope your being compensated accordingly 👍🏻👍🏻
I’ve worked on chillers for 24 years, and this is a great video. Great description without getting too involved. Good job bud.
Hi sir, please can you help me solve this? Jci 3.33kv soft stater showing stater interlock fault... Please how do you rectified this??
If you would like to feel like you know absolutely nothing about anything watch this video! Thank you I’m looking to learn chillers, your my guy now!!!
chilleracademy.com intro course
This guy is very very good at explaining the systems on the chiller in pretty good detail without overwhelming the viewer with information they might not know. This is one of the best chiller videos I've seen on TH-cam. Good job I hope to see more videos like this from you.
ive been operating steam turbines and electric chillers over 35 years we actually have this YK CENTRIFUGAL in my building in NYC and i really enjoyed this video its is a great refresher for me !! thx
I've been working on Chillers since they were made from wood , nice to see the young guys stepping up and learning to be a true chiller Mechanic, good luck to this young man.
Al Local 725 Miami, FL. Retired
What refrigerant does it use? What temperature does it lower the water to ?
Entech Sales in Garland TX has a great hands on training on the YT/YK, anybody wishing to learn more about those machines should take it.
Outstanding video and explanation Holden. I haven't ever had the privilege to get my hands on one of these yet. Hopefully i will one day. So much to learn, and thats what drives me to learn more. I hate not knowing how something works and how it is supposed to work.....so i study up and get the knowledge. Your channel is top notch and so are you.
Your are the best hvac teacher I've ever watched! Thank you!
Love the way you explained York chillers! I'm an operator who deals with the chilled water system and many other things. Learning my systems help me troubleshoot and explain the issues to technicians making their job easier.
Was also wondering if you've seen more issues with approach temperatures with chillers at the end of the leg for return water or chillers that are on stand-by for too long.
What refrigerant does it use and what temperature does it lower the water to?
Exactly
@@johnnycarson67 sorry I forgot I made this comment, oops. We use R134a Refrigerant for our Chillers (Model YK MaxE). Our chilled water temperature is designed to be at 44°F. Pushing about 6,000 - 8,000 Tonnage during production.
Excellent tutorial, brother. Just landed a gig with a hospital and all of our Chillers are York. I’ve been watching your training videos and taking notes. Much appreciated.
I have a YK course at chilleracademy.com if youd like a full understanding of YK Operations. Working on adding a complete oil section and troubleshooting section to the course. All updates are provided at no additional costs.
@@HVACTIME good to know. Your tutorials are really helpful. Working on 1600 ton York chillers are challenging
Nice piece of equipment. The only chiller I have experience on is a 100 ton Carrier. I love the display on that York. The Carrier had no info screen, only blinking LED indicators you had to count flashes for code numbers.
WOW that's incredible I had no idea it was so complex
Thank you for sharing this
Great peice of mechinary and technology. And very well explained.
Have a small question on the cooling system for the electronic panel. Why would york take the risk of having having the cooler inside the panel.if it's a cooler there is definitely water involved, which has a possibility of leaking out.
You are a very highly skilled chiller technician. Hope you consider teaching classes in HVAC apprenticeship programs, if not already doing so! You explain the processes of the machine very clearly and so one may comprehend. Thank You!
Very good explanation, very professional, thank you for sharing
Sounds like explaining how an alien space craft works... Man I'm out in the woods on this stuff...
That's ok, we ALL are when we first get introduced to them
Very good information explaining the operation of the YK l operated two 750 ton York Chillers in the facility where l work.
Great video, I work on a lot of Chillers in South Eastern Wisconsin, have had some factory training on very little of these machines, so it helps to get this type of info. THANKS!
Great video Haven’t run a chiller in a 7 years . Studying for my nyc steam practical . Fill in a worm hole found this vid and appreciate it . Thank you new follower . 🤝
Legit content, I just took over a building with 4 York water cooled chillers. I have a up hill climb, coming from primarily Carrier, and Trane water cooled and roof top air cool.
You’re awesome, fantastic way to explain it, thanks.
It would help if you did a video on how to operate the controls on the board for maintenance.
Very helpful, I just started learning more about Chillers/Cooling Towers. Great Channel
Thank you for all the information. Please keep the videos like this coming.
Interesting my work place installing York module chillers there is so much to learn 👍
In the right applications they are amazing machines
So wonderful experience
Thank you for this awesome educational video. This is best information indeed.
About to get a job at Johnson Controls. Sheesh I have so much to learn..
Great overview, just changed careers and need to learn about the cooling side of Data Centers.
I'm on the same boat. Let me know if you find any good information out there.
Chilleracademy.com
Can train you on chiller systems for applications like data centers.
I workd on a magnet bearing chiller just like this a few months ago
Great video and excellent explanation, thank you🙏
You are amazing bro! Now it makes sense to me! I wish I found you sooner! Keep it up👍
Good video.... What is inhibitor and what is its purpose?
Thanks.
Thankq sir for your more valuable information thank you very much.
Wow I stumbled upon this video looking for some insight since I'm soon taking the FDNY test and boy is this one great. Thank you so much for all the info bro you are doing great keep going.
Pretty amazing vídeo. Thank you.
Hi, Im having some issues on a YORK YMWH series, its got two solenoids for the slide valve positioning, and Im not getting 110v on the Load side, traced fault to a relay wich 24v coil is not getting 24v, any advise as to where this 24v comes from,Ive traced the wires from A1 and A2 on the relay but it goes to a armoured cable wich leads out of the panel and onto a cable rack and at the moment unaccessible, the main power comes from a panel in the plants MCC the motor feeds from here and the vsd is also mounted in this panel inside the mcc, does the relay also feed from there?
Excellent over view.
Outstanding video!!
Thank you sir, Really good vidéo 👌🏽 hopefully it helps me for my future interviews
Thnx man that really helps greats fron Egypt
Really Nice video. Keep up the good work.
Kindly give a brief knowledge about " Discharge Super Heat" and how we found faults through it
Another awesome video with lots of information and learning.
Thank u sir it's Realy useful 🎉
Nice discussion! Thanks!
Have you done a deep dive in the York YT or YK VFDs, a component overview and possibly some troubleshooting?
did a great explanation looking forward to work with that one, I'm currently with trane and clint anyway goodjob!
Glad it was helpful!
How can I fix the harmonic filter alarm, thank you for your great videos, you are the best 👍
Awesome video. I work for the factory with JCI as a Journeyman. Your references are pretty spot on. I've been learning about this machine for a few months now. I have more experience with Trane & carrier chillers. Is it possible to pump down the refrigerant all in one barrel (expressly the evap) to repair a leak on the liquid line?
While that would be great, no. Thank you for watching!
@@HVACTIME You isolate in the condenser..
Great job bro I need a chiller charging with refrigerant video please.
Thanks for the videos SUPER-YORK!
🍺🍺🍺🥃🥃🏌🏻♀️🎯
Stay safe.
Retired (werk'n)keyboard super tech. Wear your safety glasses!
The stall detector voltage doesn’t monitor temperature. It monitors pulses coming from the discharge pressure transducer and compares them to the condenser pressure.
That's not how they teach it at York factory
Your correct Stanley. The stall detector is a pressure transmitter with a very fast response time. Almost like a microphone but for high pressure. It listens for the stall. Certainly isn’t temperature
@@kc5vgw Correct, Carriers with Variable diffusers work the same way, they "look" for pressure fluctuations, not temperature. Stall preceeds surge, its a very complex dynamic where blade speeds create flow separation, "turbulence" that is picked up by the pressure sensor, as a response VGD moves to attach the flow and move the compressor away from surge. Again is a very complex area of centrifugal compressor operation best left for engineers to figure out, on the tech level we just need to make sure it works as per logic of operation and that everything is calibrated. It can get confusing very quick! It is of particular importance in variable speed compressors.
I had a couple of millennium York screw chillers , these look similar but yet not If I recall they had 440 lbs of 22 .good machines until they weren’t.
Do these machines have a purge system? You said it was a high pressure machine. Is the evaporator running a positive pressure? I guess if it is, you wouldn’t need the purge. Most machines I was familiar with ran in a pretty good vacuum.I did have one high pressure carrier system that was multi stage, high speed, and ran R22. Have you ever worked on a Carrier Flowtronic air cooled chiller? Those were the biggest POS Machines ever made. That was back in the 90”s. I did work on some carrier 5H120 recip chillers, some electric, and some with natural gas engines.
Your number one ❤🎉
Hello friend. My name is Jônatas, I'm from Brazil and I'm always watching your videos because of the great content. Could you please guide me in the best possible way for the tests when the Gate Driver or Gate Phase A error occurs
Great video
That us the most engine lime a/c ever...fhlukken sick
Good description!
How long of training have you had to be that damn good?
I work for an oem Fluid Chillers Inc. I'm wondering if any of these systems you work on have a trending or timeline graph for the pressure transducers, temperature sensors, and circuit Transformers. Also speed of variable fans and electronic expansion valve positions. We use Schneider plc's and I'm trying to incorporate smart monitoring as a test, monitoring and diagnostic tool, but it has to have extensive trending capabilities.
Centrifugal Chiller is about to be my next band name
Great explanation as always brother. 👌🏻🤙🏼
Be safe out there and Merry Christmas.
Man you know alot shit LOL!! Good teachers are very hard to come by on youtube..👨🏫awsome video
we always keep our cabinets open because they tend to overheat
Can you post some calls troubleshooting please?
Love it 💯
The problem is most mechanics in the field never get a chance to work on centrifugal chillers. Even the factory only allows a selected group to work on centrfugals
im getting refrigerant back through the line past the filter and chiller is throwing a differential alert
I have a question, I have two Chillers Yorks the same as the one in the video, but one of them goes into alarm because the water is above 65 degrees Fahrenheit and triggers the "Position MBC-Z12" alarm, after a weekend. They don't work but I turn on another cooler and after the temp drops below 65 degrees Fahrenheit it works fine, do you have any comments on why this may be happening? Thanks
11:08 the chinese made YK chiller without equip the VGD, the compressor easy get surge.
I wish I worked with you man
Did you learn some of this stuff in TJC ??
im not seeing the crankcase sump on our 1000 ton yorks. Do all not have the same setup
HI! quick question. For those VFD Oil pumps, when you bypass the drive to send power straight to the motor. would that indicate a bearing issue or something to tell you the motor is on it's way to needing service or replacement?
Thanks man for this informative vedio.
I have a question if you allow me please:
I was recently assigned in a chiller plant with no experience in chiller. We have almost the same YORK chiller arrangement.
The question is :
For some reason one of the chiller lube oil temprature keep increasing till hit 80 degree celcius and then trip.
Lube oil level is good , chiller is brand new and being online for only few months.
Any tips please?
Is it maintaining a level on the condenser? Minimum 20-30 percent. If it’s not then you’ll have flash gas in the txv for the oil cooler.
@@kc5vgw
Thanks mate for your info.
In fact,York Chiller technician guy came to site did troubleshooting he came to conclusion I quote:
.
“We Checked the oil cooling TXV found there is difference temperature in inlet, outlet its was malfunction need to be replaced”
“ Freon needs to be top-up”.
Good morning Engineer, what tonnage capacity is this chiller model YK GB FD H7-CV F
I have worked on some York YS chillers. What do they recommend pulling a vacuum to when making repairs?
I dont remember what the book says but they taught 500 microns in the classes I've been to. 1000 minimum.
B rammm. Whats wring with c ware...really texh coming to auto like that ? Sickening
Have you seen any failures due to fouling of the VSD cabinet cooling loop? Looking at an issue with a YK Chiller that had inhibitor changed out yearly, but after year 3, the Harmonic Filter (and a few other components) fried. Ended up bypassing the harmonic filter. Wondering if you have seen something similar in other York YKs.
I personally haven't but I know its a real issue. SUPPOSEDLY if you were doing the inhibitor annually with the blue inhibitor it isnt supposed to. Really wonder if you have an environmental issue.
@@HVACTIME Thanks for the reply! The other thing that baffles me is there is a series of alarms that SHOULD trigger if there is an issue with heat. The cabinet itself, and 2 different control boards inside the cabinet all have high temperature alarms built into them, but we received no error messages.
@@organholer may have been running just below the threshold for an extended period of time.
Any way you can send a pic or a vid of where the hotwell is located on a toro steam chiller?
brother pls do a video of Carrier19XR/XRV.thx
I’m working in one of these next week and will be changing the oil . How bad is it changing the oil with a hand pump ? What’s your method? Thanks!
Hand pump works good, but if I've got it in a vacuum thats easier.
@@HVACTIME thank you!
Electric pump makes life much easier.
Why is your Condenser drop leg temperature higher than your Condenser saturation temperature at 22:10.
what kind of facility would you find a unit like this in most commonly
On the small side could be a office building or condominium. On the large side a district loop serving a portion of a city district or manufacturing facility.
Great detailed Video. We have a York YSBABA51 that is down. anyone in NYC that you could recommend?
what is your input for the chiller companies trying to control and give password to chillers and sell the customer the code even to troubleshoot?
It's wrong. A customer has the right to repair and service their own equipment without the original manufacturer having a say.
@@HVACTIME you are right brother! eventually it is moving in that direction to have dominance and a monopoly rule. I am not sure if they are legally even allowed to do that. If you are qualified technician that shouldn’t be an issue if they ask you for your licensing to ensure it is a qualified technician. Thank you for your input and you are doing great and an awesome job brother. Just to let you know there are lots of respect from tech all across the world for your mentoring. Peace
What is the specific refrigerant used on this machine ?
R134a
all the electronics and constant failures are making the old ice-houses and blocks of ice look better 🤣
some days lol
And why the level meter is on condenser?
Because the level of evaporator is important for working machine in good situation.
Why they dont put the level meter sensor. On evaporator?
Because they want a liquid seal on the sub cooler. There is a plate over the sub cooler bundle. If you get vapor under it then you have noise, turbulence, instability, and high oil temps as the oil cooler won’t be as effective. This applies on the YK. Yt, different outcome but they want the liquid seal
Thanks for this video, it really helped a lot! Do you happen to have any videos on York Steam Turbine Centrifugal Chillers? The exam I'm taking in a few months is on the YST. As for this video, am I correct in saying that this is NOT a reciprocating system? It's an electrical powered York?
Cool man
Have you had any luck using something like puTTy to capture the log sheet using the print feature?
Ive not had to use it yet. I was trained on it back when i went to factory training some time back but never had a need.
The "new/better" heat exchanger by Toshiba Japan for So Cal Edison's San Onofre Nuclear power station fail after one year because of rattling tubes in their support brackets. They closed the generation plant after thatF--k up.
I wish there was at least English subtitles
VSD high phase A instantaneous current? Looking for troubleshooting videos
techsupport@hvactimetx.com
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Can you tell the RPM of low speed and high speed ?