@@bunnyman6321well i don’t work on this stuff but I work on kitchen refer units in general when a bunch of stuff is running and it all shuts off means you got a BIG problem so same logic applies to this
That was a great video intro with the power cut, gripping. Could also check the cooling tower bypass valve position and also the distribution tray inside the tower to see if its blocked or unequally distributing condenser water over the fill. Possibly increase fan speed or turn another tower on to try and get the temperature down in the peak load.
@@HVACTIME Great video. I was wondering if you can maybe help me out I'm a Refrigeration Foreman and I work at Los Alamos National Laboratory, sometime in early September we will be salvaging out 2 Trane centrifugal Chillers. They R123a units each containing 750 lb of refrigerant I have already ordered a low pressure refrigerant recovery machine two 1000 lb tanks and all the correct connections and hoses to recover the refrigerant from the system after the refrigerant has been recovered these machines are going to be disassembled and removed from the mechanical room and in place we are going to be piping in new Arctic chill split system Chillers my question to you is could you please maybe send me a video that I could share with my crew on the proper way to recover the refrigerant out of the chiller as we do mostly low-to-medium tonnage AC but very little heavy tonnage I understand just enough to get myself in trouble the condenser water has already been drained from the system and I'm pretty sure that the evaporator water has been shut off to the system as well so I'm thinking that we will have to drain all the fluids from the chiller barrel and from the condenser as to not freeze up the the tubes inside and bust them I've also noticed ball valves on at the bottom of the the barrel with quick disconnects I'm pretty sure that what we need to do is open up the Valve and let all the liquid flow out into the recovery cylinders then once we get down to certain pressure used to push pull method but I am not certain and I do not want to leave my crew astray. Any consideration would be greatly appreciated thank you so much
@@shanegreen268 you are correct on using the push pull method is very effective, especially with low pressure. Also you can drain the barrels or just flow water, if you flow water on both it speeds up the recovery by adding heat to the refrigerant. I dont have a specific video currently but let me see what I can do.
As an apprentice half way through my apprenticeship, wanting to get into chillers when I grow up, I've found myself watching all your videos absorbing everything I can. Good shit man. Keep it up.
Im telling ya. He is the truth on this heavy commercial. After years of reading through manuals and reading on forums everyday finallly I have found a person that I can relate to that shares knowledge. Keep up the great work. You one of the best out there
Good thinking running the current in hand, the problems in the industry are super interesting though, it's why I love hvac, it's a savage mix of trades. I think if you can do hvac you can pretty much do it all. I do pharmaceutical hvac cqv but we're starting to take on ac work aswell now and I must say it's been nice to stretch out my electronics experience. I mean I work on msc's, incubators, dfb's , cooling towers etc etc but mini splits and refrigerant chillers are new to me. Been in this now for 5 years and it's the first job I haven't been bored in.
I was in a MER and the High voltage maintenance guy was racking a breaker up at the CUP but he forgot a 1/2 wrench after tightening the busses and shorted 4160 phase to phase. Silence is the scariest sound. Thank God the guy was alive after the smoke settled. Family first!! You sound like a great employer to work for!!
Great informative video. Trane no longer uses the purge recovery tank. Great training on using the current limiting function on the UCPll. Stay cool and stay safe !
Saw that purge suction temp in the 90s and immediately thought check that sensor (like you did). Just had a machine surging like crazy, full of air but no purge mins cause that suction sensor SEN2133 failed high like it normally does and it never went in to a pump out. Had another one surging with a bad compressor on the purge. Purges ran with no condenser fan motors for an extended period of time. Another contractor replaced the fan motors. But the compressors were shot. Running and amping fine (little low) seemingly, but blown out internally. Read like 88* on suction 89* on discharge. Replaced the entire condensing unit on it, it pumped its ass off for two days, then came down enough to keep up until we can do a leak check. Trane has a service bulletin out as well for taking a fairly accurate subcool reading on the purges without having to put taps in the lines. Gives you a pretty good idea of charge and what’s going on with it. Cool videos too man. Post some more overhaul shit!!
That old chiller reminded me of an old customer that blew up their Carrier 19XR and the main 1000 amp fuses for the building with it. Don´t remember the whole story but they tried to run it with low load because their smaller winter chiller was down and they did not want to spend any money on repairs. To do that they had to override the start counter since it it limited to 3 starts in 12h. Spolier: They did not save any money.
@@bunnyman6321 In this case if i remember right we suspected catastrphic mechanical failure since the windings measured out okey and fuses don´t blow without a reason. Then we recovered the refrigerant and opened up the compressor housing and the impeller was in pieces.
@@bunnyman6321 To be honest I dont´t really know but i would not be surprised if the parts and shipping cost 20k and the labour as much. I think the impeller alone cost 10k.
Whats that small compressor/fan unit for as well as what looks like a 5lb propane tank? I have seen a lot of centrifugal chillers in the past 40 years but never like that.
Intense situation, would like some more info on the purge machine. I understand the basics behind it but that suction line temp seems really high, I would imagine it may be low on refrigerant but I don’t work on those.
I remember going on a service call and had to change out the UPS on the BAS system. All 4 chillers and pumps turned off when it loss low voltage signal and that was one quiet plant
I’d caution you on starting a chiller with the starter panel open, especially after you just had a mysterious electrical outage. Great videos though, I really enjoy them.
Yeah when this stuff blows up it blows up for real. I work electrical and them big industrial installations are no joke the expected fault currents on those are trough the roof and that makes for fun explosions and fireballs.
Love your videos. Could you make an informative video on chiller approach temps and limiting and how to properly set them on trane model RTWD screw type chillers. Thanks
Awesome vids, great to watch how things are done in the US and I have learnt a heck of lot from your vids. Could you explain what you meant when you said not to meg the motor with refrigerant in it. 👍
@@HVACTIME thanks for getting back to me on my question. Really appreciate it. And again, thanks for your vids - it is a tremendous help to many of us I am sure🙌
Have you ever dealt with any energy recovering wheel erm? I ran across one at one of our schools on an old system I've never seen that before I would think that would cause air flow issues in the duct.
Must have been a phantom trip where a mains breaker was loaded up good and then something happened that kicked it over. Could have been a tiny current spike or surge. If its a trip happy breaker it needs to be looked at by an industrial electrician and fixed somehow before it kicks out again.
FYI, just seen this video. Your purge was not running. And saying it is not full of air because of no purge time. Is very funny to me. But a great vendor. Keep learning sir.
The purge had been running. They shut it down about an hour before I got there. You can see the purge suction temps after I got everything back on as well. There was no evidence the system had an atmosphere issue.
Hallo sir, Chiller Model # Trane RTAD -085 I want to keep RUN circuit # 01 and keep OFF Circuit # 02 how to do from keyboard... Pls. Let me know or we any other option....
@@HVACChillin Thanks you very much Sir.... I more help sir In same model i am facing circuit # B in OFF Mode or RUN Mode condition Suction pressure is 290 kpa in gauge but in display 2018 kpa So i checked LP switch is ok if i disconnected LP Switch at switch still showing same then i disconnected from motherboard jack then it's showing disconnected (-) but when i connect at same jack again 2018 kpa. If any solution pls. Comments.. when chiller start after some time becomes lockout and showing need updates... Ur help will be appreciated.....
@@ashpaktechnicalsupport this chiller uses thermistors not transducers. Its taking refrigerant temperature and converting it to pressure. You need to take surface temperature next right to the temperature sensor and confirm its reading correctly. But it sounds you like you may have a bad suction line temperature sensor. I would replace it and also the evaporator saturated temperature sensor at the same time.
This looks like a Trane Centravac Chiller. I have a feeling there may of been an issue with that old electric distribution panel. I never really careed for chillers as i don't think they fully remove the humidity like a standard refrigerant air conditioner does. Chillers break down quite often as well.
I’d have to disagree on the humidity removal issue. An air handler with a chilled water coil is usually run at 44 degrees and is basically infinitely adjustable and never really shuts off. DX coils with refrigerant in them will run colder but doesn’t usually have the precise capacity adjustment of a chilled water system. Chillers are usually very reliable if proper maintenance is performed. Most customers today do not want to spend the money required to properly run and maintain a chilled water system. A space that has multiple DX split or rooftop units will only develop hot spots if one or two of them fail. A place that has a chiller without adequate back up is SOL if the chiller breaks down.
@@hvacguru2313 i appreciate that, always looking to improve. This one definitely turned crazy. After all this the electrical company found the new controller they put in wasn't set correctly as to the main tripping.
![BLACK BAG - Official Trailer [HD] - Only in Theaters March 14](http://i.ytimg.com/vi/Du0Xp8WX_7I/mqdefault.jpg)
chilleracademy.com/p/intro-to-chillers
Get support today.
Scariest sound in a central plant... That sudden silence as the plant shuts down.
Why?
@@bunnyman6321well i don’t work on this stuff but I work on kitchen refer units in general when a bunch of stuff is running and it all shuts off means you got a BIG problem so same logic applies to this
😂😂😂
Sudden silence followed by a not so silent, "oh, F***!"
such an eerie and odd sound.... only people in industrial would understand
That was a great video intro with the power cut, gripping. Could also check the cooling tower bypass valve position and also the distribution tray inside the tower to see if its blocked or unequally distributing condenser water over the fill. Possibly increase fan speed or turn another tower on to try and get the temperature down in the peak load.
Great input! Love what you're doing.
@@HVACTIME Great video. I was wondering if you can maybe help me out I'm a Refrigeration Foreman and I work at Los Alamos National Laboratory, sometime in early September we will be salvaging out 2 Trane centrifugal Chillers. They R123a units each containing 750 lb of refrigerant I have already ordered a low pressure refrigerant recovery machine two 1000 lb tanks and all the correct connections and hoses to recover the refrigerant from the system after the refrigerant has been recovered these machines are going to be disassembled and removed from the mechanical room and in place we are going to be piping in new Arctic chill split system Chillers my question to you is could you please maybe send me a video that I could share with my crew on the proper way to recover the refrigerant out of the chiller as we do mostly low-to-medium tonnage AC but very little heavy tonnage I understand just enough to get myself in trouble the condenser water has already been drained from the system and I'm pretty sure that the evaporator water has been shut off to the system as well so I'm thinking that we will have to drain all the fluids from the chiller barrel and from the condenser as to not freeze up the the tubes inside and bust them I've also noticed ball valves on at the bottom of the the barrel with quick disconnects I'm pretty sure that what we need to do is open up the Valve and let all the liquid flow out into the recovery cylinders then once we get down to certain pressure used to push pull method but I am not certain and I do not want to leave my crew astray. Any consideration would be greatly appreciated thank you so much
@@shanegreen268 you are correct on using the push pull method is very effective, especially with low pressure. Also you can drain the barrels or just flow water, if you flow water on both it speeds up the recovery by adding heat to the refrigerant. I dont have a specific video currently but let me see what I can do.
@@HVACTIME Thank you so much. I appreciate it.
@@shanegreen268 I uploaded a video for you this morning on my channel
As an apprentice half way through my apprenticeship, wanting to get into chillers when I grow up, I've found myself watching all your videos absorbing everything I can. Good shit man. Keep it up.
Im telling ya. He is the truth on this heavy commercial. After years of reading through manuals and reading on forums everyday finallly I have found a person that I can relate to that shares knowledge. Keep up the great work. You one of the best out there
@@JackDavidson-ov2tf this is industrial
@@msboys1000 What's the difference between industrial and commercial?
Jesse H How you making out in the field ?
@@bunnyman6321 industrial is more like plants, commercial is places like Walmart and grocery stores
tripping the main braker the heart breaking time of hvac technician ,
Very nice background song, looks like a scary movie 🍿
I just retired from hvac and worked on several chillers just like those and had surge issues brings back memories
Thank You. You are great for the health of the trades. I really appreciate the obvious effort you have put into being masterful at your job.
Good thinking running the current in hand, the problems in the industry are super interesting though, it's why I love hvac, it's a savage mix of trades. I think if you can do hvac you can pretty much do it all. I do pharmaceutical hvac cqv but we're starting to take on ac work aswell now and I must say it's been nice to stretch out my electronics experience. I mean I work on msc's, incubators, dfb's , cooling towers etc etc but mini splits and refrigerant chillers are new to me. Been in this now for 5 years and it's the first job I haven't been bored in.
I was in a MER and the High voltage maintenance guy was racking a breaker up at the CUP but he forgot a 1/2 wrench after tightening the busses and shorted 4160 phase to phase. Silence is the scariest sound. Thank God the guy was alive after the smoke settled. Family first!! You sound like a great employer to work for!!
thanks for the thorough detailed explanations on your process
Thanks for sharing good video and your good experience !!!
Great informative video. Trane no longer uses the purge recovery tank. Great training on using the current limiting function on the UCPll. Stay cool and stay safe !
Saw that purge suction temp in the 90s and immediately thought check that sensor (like you did). Just had a machine surging like crazy, full of air but no purge mins cause that suction sensor SEN2133 failed high like it normally does and it never went in to a pump out.
Had another one surging with a bad compressor on the purge. Purges ran with no condenser fan motors for an extended period of time. Another contractor replaced the fan motors. But the compressors were shot. Running and amping fine (little low) seemingly, but blown out internally. Read like 88* on suction 89* on discharge. Replaced the entire condensing unit on it, it pumped its ass off for two days, then came down enough to keep up until we can do a leak check. Trane has a service bulletin out as well for taking a fairly accurate subcool reading on the purges without having to put taps in the lines. Gives you a pretty good idea of charge and what’s going on with it. Cool videos too man. Post some more overhaul shit!!
That old chiller reminded me of an old customer that blew up their Carrier 19XR and the main 1000 amp fuses for the building with it.
Don´t remember the whole story but they tried to run it with low load because their smaller winter chiller was down and they did not want to spend any money on repairs. To do that they had to override the start counter since it it limited to 3 starts in 12h.
Spolier: They did not save any money.
How you know if a chiller blew up?
@@bunnyman6321 In this case if i remember right we suspected catastrphic mechanical failure since the windings measured out okey and fuses don´t blow without a reason.
Then we recovered the refrigerant and opened up the compressor housing and the impeller was in pieces.
@Mr Bugenhagen Damn
How much it cost to fix something like that?
@@bunnyman6321 To be honest I dont´t really know but i would not be surprised if the parts and shipping cost 20k and the labour as much. I think the impeller alone cost 10k.
@@mrbugenhagen3364 Sheesh!
Whats that small compressor/fan unit for as well as what looks like a 5lb propane tank? I have seen a lot of centrifugal chillers in the past 40 years but never like that.
You’re right we need more techs and schools
Intense situation, would like some more info on the purge machine. I understand the basics behind it but that suction line temp seems really high, I would imagine it may be low on refrigerant but I don’t work on those.
I love the sound of a trane it like the sound of a V10 f1 car. When the sound of all machine off that freak you out and you can pin drop in it.
I remember going on a service call and had to change out the UPS on the BAS system. All 4 chillers and pumps turned off when it loss low voltage signal and that was one quiet plant
That back round music says it all
You are explaining very clear
I’d caution you on starting a chiller with the starter panel open, especially after you just had a mysterious electrical outage.
Great videos though, I really enjoy them.
Yeah when this stuff blows up it blows up for real. I work electrical and them big industrial installations are no joke the expected fault currents on those are trough the roof and that makes for fun explosions and fireballs.
Unrealistic. Most of the time you have panels open when troubleshooting. Wear PPE and be aware of the line of fire always and you will be safe.
Tnxs for sharing....🥰
Awesome work 💯
This happened to us at our buikdings. And the CT wasnt liking the temperature it was getting. Which was weird because we are in the Bay Area(CA)
That moment when you have no other words than ‘well that ain’t good.’
Nice video. Great knowledge and experience.
Thanks for sharing
Great call .. noisy 4 sure....Trane will handle ..Surge again. ...humid here also maybe 88 to 90 percent...great call my bro....
great professional work
vey great video!!!
I did chilled water piping for 20 years in south Florida
I think you troubleshooting was on point. ✊🏼
Love your videos. Could you make an informative video on chiller approach temps and limiting and how to properly set them on trane model RTWD screw type chillers. Thanks
Awesome vids, great to watch how things are done in the US and I have learnt a heck of lot from your vids.
Could you explain what you meant when you said not to meg the motor with refrigerant in it. 👍
Thank you, It can damage the refrigerant to megg the motor while in a vacuum. You have to get the system into a positive pressure.
@@HVACTIME thanks for getting back to me on my question. Really appreciate it. And again, thanks for your vids - it is a tremendous help to many of us I am sure🙌
Did you check the contacts on those contractors?
I miss working
Did you do an investigation on the cooling tower fan? You mentioned a suspect motor speed control issue.
What is the reason oil pump going to trip ? it’s taking 38A ..
please make a video on how to replace oil filter of Trane centrifugal chiller.
Super pro
damn you love your family.
Yes I do, its something we should be better at as a trade.
Wow thank you sir. Hoping that I could apply to you sir from philippines sir.
Simple control so fully activity
Have you ever dealt with any energy recovering wheel erm? I ran across one at one of our schools on an old system I've never seen that before I would think that would cause air flow issues in the duct.
If you suspect a high side surge from elevated condenser water temps enable condenser limit.
Is it bad for a chiller to loose power
Condenser approach?
Love the videos!
1 degree
During my time in bahrain we have a plant where during summer we dump cold water in cooling thru extra heat exchanger.
Gulf summer is no joke
It's hard to find work close to home n that's a bummer where ever you work
TRANE CHILLER RTHB ALARM (SOLID state starter fault relay open) Chiller trip.what issue how check in tha solid state starter part's.
Must have been a phantom trip where a mains breaker was loaded up good and then something happened that kicked it over. Could have been a tiny current spike or surge.
If its a trip happy breaker it needs to be looked at by an industrial electrician and fixed somehow before it kicks out again.
0:41 what is that condenser?
Purge unit
Need to enable the peak pull down limit in the settings.
Open cooling tower drain and run a hose
WCFX Dunham Bush screw chiller when they low oil alarm is freaking noisy.
God.. imagine this at a high school ohhh boy the trouble you'd be in
Now you probably gotta go vent the airhandlers
Trane centrifugal chiller error to "extended compressor surge" and chiller trip what think check this issue
Check your purge system and sensors first. Also make sure the purge dryer has been changed in last 12 months.
@@HVACTIME bro thanks for reply
We will check purge Carbon tank temp go to high for 100°C above
Purge dryer changed few months before
FYI, just seen this video. Your purge was not running. And saying it is not full of air because of no purge time. Is very funny to me. But a great vendor. Keep learning sir.
The purge had been running. They shut it down about an hour before I got there. You can see the purge suction temps after I got everything back on as well. There was no evidence the system had an atmosphere issue.
Hallo sir,
Chiller Model # Trane RTAD -085
I want to keep RUN circuit # 01 and keep OFF Circuit # 02 how to do from keyboard...
Pls. Let me know or we any other option....
Go into service test tab and lock out circuit 2.
@@HVACChillin Thanks you very much Sir....
I more help sir
In same model i am facing circuit # B in OFF Mode or RUN Mode condition Suction pressure is 290 kpa in gauge but in display 2018 kpa
So i checked LP switch is ok if i disconnected LP Switch at switch still showing same then i disconnected from motherboard jack then it's showing disconnected (-) but when i connect at same jack again 2018 kpa. If any solution pls. Comments.. when chiller start after some time becomes lockout and showing need updates...
Ur help will be appreciated.....
@@ashpaktechnicalsupport this chiller uses thermistors not transducers. Its taking refrigerant temperature and converting it to pressure. You need to take surface temperature next right to the temperature sensor and confirm its reading correctly. But it sounds you like you may have a bad suction line temperature sensor. I would replace it and also the evaporator saturated temperature sensor at the same time.
@@HVACChillin Thanks you very much sir....
I will check today
Great advice much appreciated most employers are slave pushers"
i wanna work in that stuff but i know the accidents and how dangerous that stuff is...
Just takes training and being meticulous.
And now we know the German word for "shit"!
🤣🤣
This looks like a Trane Centravac Chiller. I have a feeling there may of been an issue with that old electric distribution panel. I never really careed for chillers as i don't think they fully remove the humidity like a standard refrigerant air conditioner does. Chillers break down quite often as well.
I’d have to disagree on the humidity removal issue. An air handler with a chilled water coil is usually run at 44 degrees and is basically infinitely adjustable and never really shuts off. DX coils with refrigerant in them will run colder but doesn’t usually have the precise capacity adjustment of a chilled water system. Chillers are usually very reliable if proper maintenance is performed. Most customers today do not want to spend the money required to properly run and maintain a chilled water system. A space that has multiple DX split or rooftop units will only develop hot spots if one or two of them fail. A place that has a chiller without adequate back up is SOL if the chiller breaks down.
Increase cooling temp
Nothing crispy, Please don't blow up 😄😄
Are you actually charging people for technical advice/support?! 😂
Throw Abbott out he ain’t fixing the grid. But great job though
another missed diagnostic lol
Hows that? Whats yours?
@@HVACTIME I watched a couple more videos and it actaully does seem like your a good tech. commercial is no joke, props to you.
@@hvacguru2313 i appreciate that, always looking to improve. This one definitely turned crazy. After all this the electrical company found the new controller they put in wasn't set correctly as to the main tripping.
thats what you get for using the wrong-colored electricity