Tripping Low Pressure York Air Cooled Chiller Down

Service call came in for chiller down ac not cooling. Found York air cooled chiller tripping on low pressure switch for both compressors. Thankfully I was able to get it back online. Enjoy hvac technician and chiller tech.
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[@HVACTIME]

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[@justinperry68]

This is why we have chiller guys in our trade, me working on commercial walk in freezer fridges, getting a call for this, would be a nightmare, great video sir, respect you.

[@bureaucratbayonet]

Respect for working on walk ins it aint easy

[@NotSexualAtAll]

Non ionizing radiation. The biggest issue would be "microwave heating" of human tissue. If you feel warm, move way from the antennas. Otherwise, you're almost certainly fine.

[@user-oo1eh1ec5i]

Thanks

[@samuelaranda4597]

I worked for York/JCI for years as start up for years and did warranty work. I always carried those sensors in my truck. Actually you should be changing those on maintenance schedule on annuals. But don’t go past 3 years. They drift always. I retired March after 31 years in the Union. Good job

[@PereiraJholAVAC-R]

Samuel, o senhor poderia por gentileza falar um pouco a respeito de gate driver?

[@samuelaranda4597]

@@PereiraJholAVAC-R I don’t understand your language written. I’m sorry

[@PereiraJholAVAC-R]

@@samuelaranda4597 Sorry Samuel, My question is if you can explain about Gate Driver, or if you have any material to make available about this alarm

[@glennnickey3160]

yeah, I worked for York/JCI too. Temp sensors and pressure transducers were the most common failures. We always kept a supply in the test lab.

[@spikester]

Ahh, 30+ years of using the same broken drifty x-type thermocouples, I answered my own question from earlier on why the design has never been changed. It makes sense now.

[@businjay]

I wished I lived out by you, I Would love to learn more about chillwater systems and such, I keep plenty busy here in CO with Ice machines and walk in boxes and RTU's but I am bored with it. something to contemplate!! Love your Videos, Takes a special person to educate the rest of us and a special person to look forward to when the next Episode of your chiller videos come out. ha ha, Anytime I can learn I am happy, Thanks for sharing your info :-)

[@societyspy]

Just started in the industrial side a week ago, very excited to learn all about it!

[@kc0eks]

This equipment looks like a great time to work on. Thanks for sharing.

[@tommyteamer9037]

Thanks For showing how to work on a Ace chiller

[@mikebavoso26]

I work on condition space Chillers for 50 years. These are all chillers that were installed between 1948 and 1967. There were no VFDs or computer Logic on any of this equipment. All unloading was done by cyclinder solenoids and Penn Basso Micro Control pressure switches. The superheat was somewhere between 15 and 17 on these open drive compressors which the Penn Basso Micro Control pressure switches would load and unload the compressor. Everything was mechanical including the governor's that ran the 389 Chrysler Hemi engines running on natural gas When I left after retirement there were no techs that could use their iPhone to fix the Chillers. If there was a problem with the control circuitry I could start these chillers with a donut magnet on the liquid line solenoids until I could work on the 120 volt control circuits

[@crimslice7536]

Super neat experience, thanks for sharing.

[@eddiewendler9263]

Rooftop communication site - as long, as you don't walk in front of the antennas, you'll be okay. Those are directional panel antennas and radiate outwards only from the front, not the back. If you know, or see you are directly in front of one of these antennas, you should inform your customer, you need the contact number for the communication carrier and call to request a sector turn-down. You want to perform your job safely, carriers can and will turn-down sectors or the entire site for safety. Sometimes if you look around, you might find a placard that has the carrier name, site ID and a NOC (national observation center) number you can call. Stay safe.

[@Georges3DPrinters]

I've heard of injuries were people microwave their hand basically

[@hardwiired]

YES, If you are going to be infront of the antennas always call the number on the sign posted first!

[@SupremeRuleroftheWorld]

@@Georges3DPrinters that technically cannot happen, its non isonising radiation.

[@Georges3DPrinters]

@@SupremeRuleroftheWorld hence the basically for those that don't understand the difference between wavelengths of radio frequencies nor would most people understand that it's the shear wattage and proximity to the transceiver antennas...... But don't let that stop you and please go ahead and reply with a lengthy explanation that most will never read because it's too long, explaining the difference between the two plus types of radio frequencies and don't forget to mention amplitude of signals, interaction with H20 etc.

[@SupremeRuleroftheWorld]

@@Georges3DPrinters cell towers only broadcast at around 10W or so. might want to check your "facts" first. you actually need to be dry humping those antennas to get any type of effect from them. they are not millitary missile radar tracking stations that actually makes your nuts fall off if you stand in front of them.

[@inlandac]

Years ago I was a IMAP technician for state dept & we were always warned to check with the agencies to not get microwaved on the roof.

[@HVACTIME]

I've had this weird tick ever since I left there...lol its definitely concerning but its our new reality

[@user-ev8tv1qe1z]

Good Call well done

[@derekcrittenden4051]

Possibly transitioning in the industry. Just doing research to get a general grasp on everything. Thanks for the very informative video.

[@SombraLocs]

Keep bringing that great info 👍

[@solomonhalvorson8922]

We have a RF meter at work. Some sites we have to schedule a shutdown or reduction of output in advance. You’re probably fine on that roof since those antenna are directional and pointed away from you.

[@sergiodjf]

Good job! 👍 Good information is key!

[@blacksmith8642]

Your videos 📹more helpful for us thanks and appreciate your efforts

[@gregoryclemen1870]

I worked on chillers for years, and now retired. you can go into the processor logic functions and tell it to perform the logic functions from the entering chilled water side of the chiller, while you replace/ order new temp sensors for the leaving chilled water temp side of the chiller. we did this so the chiller would start/ run without false tripping. when johnson cotrols bought out york from borg/warner, they are terrible with technical support, and the reason is they want the service call!!!. we went with carrier equipment, dumping trane/ york systems, at least carrier will work with you when it comes to technical support.

[@washingtonbajan8205]

Great video, had a similar issue in Florida!!

[@tinman4585]

I used to work for ATT and Verizon on the AC we used where these little cards that sense RF but never felt hot. But did once at ESPN rigging some units in-front of dishes.

[@stephenburns3262]

That glycol pump was tuff probably from being cold I’m sure amps came down from start. Smoothed out great video

[@toyinorodare4072]

Thank for this video. Please recommend a book on Chiller Repair and Troubleshooting

[@HVACTIME]

I suggest reading through IOM manuals.

[@mansurshah9015]

I was told by a cellphone tower to call them to schedule shutdown. Apparently seems very dangerous on long run especially if we are working continuously on the roof

[@alexgarcia1471]

Had this exact issue on a McQuay chiller a few weeks ago.

[@HiddenResolve]

We recently took over a building that Verizon and ATT use a antenna site. I had our boss require us to take the required RF/EME training and have an RF detector with us when we are there. They have a big label on the door to the roof that says its needed. I got equipment thats right infront of of the direction they are pointing. For me safety is a big concern, company wont care if I get disabled for life, they go hire someone else. Safety before work for me.

[@joshstevens9826]

Dont have to replace the entire harnesses. York sells pre-made plugs with butt connectors. They are pricey, but way better than stringing an entire harness. They sell the 3 wire transducer and 2 wire thermistor plugs.

[@JackDavidson-ov2tf]

Where are you able to get those because I have tried in the past but has been unsuccessful

[@johncruz8974]

I would have to move from Florida to at least apply. Love your videos

[@gaminidissanayake5465]

please could you do a video on the complete control system on YCIV/YVAA chiller. thanks and god bless.( control box items how they are working etc.)

[@Cgarrison]

GREAT info! Currently am dealing with all the same exact issues you have here and what do ya know? The last tech 2 weeks ago was supposed to install a new LWT sensor and instead installed an oil temp sensor in its place by accident!

[@DavidKing-vb9ux]

Years ago at a 400 ton air cooled carrier, screw chiller and the design engineer had multi loop variable drives on the pumps. It was in a school so we had anywhere from 10 ton air handlers to 40 ton air handlers that come online and go off-line the variable drives would slow down the flow when a large air handler started or shut down it would vary the flow Thats the same flow through the chiller so my chiller may be running at 200 tons of capacity and all the sudden we would shed 80 or hundred tons of load the pumps would slow down and the chiller would just go crazy! after a very long discussion with the young design engineer, we came up with a solution that wasn’t gonna kill my chiller not one that he liked.

[@rafaellara4122]

Awesome video bro 💪

[@masterchef6694]

Thanks man ....for sharing this

[@PeedeeFlyy]

Get the cooper ones man. Best temp probes ever!

[@spikester]

Why are these sensors so crap anyway that they only last 3 years before throwing spontaneous faults? Seems like an engineering flaw intended to keep the consumables flowing freely.

[@workinprogress3942]

Wish I could move down there and work for ya. I'm just tired of the cold weather.

[@arshadjamil9522]

Great video sir

[@curioushvacguy6876]

awesome video man

[@HVACTIME]

Thank you

[@joshstevens9826]

Try midwest parts in Louisville for the tranducer/thermistor plugs

[@titurevvlog]

Thanks bro.for information.

[@blacksmith8642]

Sir, kindly make a 📹on yvaa York chiller IGBT module testing for good or defective and what is effects create on discharge superheat if 🛢oil mix with refrigerant in the cooler Thanks

[@moonlightacmaintenance3232]

Interesting. It’s been awhile since this was posted , but I was just talking to my wife about moving to Texas tonight.

[@HVACTIME]

Its a great place

[@moonlightacmaintenance3232]

I love it. I’ve been visiting the jellystone burleson tx area the last few years. Fell in love. I’m 42 and am graduating in may from the local technical college with residential. They don’t really have the equipment to teach commercial so it will be just out of the book. I plan on taking a 3 day class at chillco. I just switch from driving a school bus with the local school board over to the Maintenace department on the HVAC crew. I just finished a year under my belt and have learned so much from guys like you and Chris at HVACR videos. Along with Graig from ac service tech. Thanks for the content. I just started watching your videos do to the chiller content you provide.

[@jakestone2591]

I'm on top of st. Ed's looking at the capitol too. Looking at a chiller.

[@DiaperwiperDad]

Nice view

[@stephenburns3262]

Nice video lovely snow the capital

[@basilsami8685]

Hi My air cooled York chiller compressor is tripping on current limit. The unit has 2 x compressors and bigger compressor having FLA 270A and is tripping on current limit. One thing I have observed that when ambient temperature crosses almost 38 C this issues appears. The set-point I have given is 9 so that 24 C temperature is maintained in 2 x floors of plant and it was working fine before.

[@realestateservicessaleshea99]

My question is when I see you on these jobs I don't see any operators or log books 🤔 This could give you clues to the problem before the problem? Just wondering 🤔 🥃🥃🍺🍺🍺🍿🏌🏻‍♀️ Stay safe. Retired (werk'n) keyboard super tech. Wear your safety glasses!

[@bigcat.mattyahoo]

can i have link to buy that read hand held temp probe bigcatmatt hvac in minnesota

[@stephenburns3262]

Do you have a video on that control?

[@stephenburns3262]

Ear protection. Nice work

[@R70yd]

Hi im a senior technician working JCI Jeddah KSA

[@trouble30906]

I’m working on a Yvaa chiller right now that’s driving me crazy..My question is do you know what the condenser drain valve looks at and controls?Circuit 1 runs fine.Circuit 2 the drain valve strokes open and closes no problem but when the circuit starts up it opens to 30% and slowly the suction pressure drops and the evaporator level drops to almost empty.I can stroke the valve open while the circuit is off and unplug the valve start it up and everything will flow but once I get about 50% in the sight glass and plug it back up it will go to 30% start pumping in back down slowly.thanks in advance

[@danielouellette804]

great vid were trying to build up a quality team in windsor ontario not easy eh? lol

[@HVACTIME]

Not at all

[@MohamedHassan-hw3ch]

I have a malfunction in the same model of the Sheller Motor Current Overload

[@craigforster9861]

Is bypass valve maintaining proper minimum flow for chiller? Also what is pressure drop across water side? Is flow right for chiller? I assume building has 2 way control valves?

[@HVACTIME]

Water flow isnt perfect but is acceptable on this chiller/ building

[@jerrypeal653]

Yep , good point. I had water flow issue with 2 York Millennium to big of a cooling tower . Whoever programmed the system didn’t know what they were doing . Had to reprogram entire system. Always fun having to recover oil .

[@coolsheatingacservices7375]

What's causes ice on the compressor.. Two compressor on chiller compressor one is freezing a little but compressor two is not freezing???

[@rubenguzman6144]

Sounds like you trying to yodel lol . While at the control board

[@kendobass]

You mention Saturation point 23:00 what is it?

[@localchumb]

is there a video somewhere that shows all the parts like the impellors and whatnot? I'm in class for this but I'm still rather confused when it comes to putting all the parts together

[@HVACTIME]

I have one where I explain the refrigeration cycle

[@localchumb]

@@HVACTIME my man

[@mansourghadhban236]

Always you top

[@markbell6864]

Why do some compressors on drives like this one and on intelliPaks with variable speed compressors run such high frequencies?

[@spikester]

Probably because the drive was retrofitted in after the fact vs. coming with the device as delivered, thats all I can think of, they can run some motors designed for 60hz line freq higher to increase RPM but it all has to be properly re-rated to handle such. There was a large transition period where vector drives were thrown in everything the moment costs came affordable.

[@0scarlink378]

Excelent muy friend okay, thanks you good Nigth 😃👍😎🙏 Nice 😃

[@karaors8970]

👍

[@thamban.kkelambeth5140]

Hi yciv chiller how to psig to change bar

[@tanyamanhid625]

How to reset vsd run relay fault on york yvaa?

[@hasanmasudul4519]

Daikin chiller Float fault every time chiller trip. What reason?

[@stephenbullock1443]

Great job

[@rickyoroa6961]

i am hvac tech 12 yrs in Riyadh

[@shaunmuhammad5968]

Hi all , I'm Shaun corresponding from England. I too see the Phone masts on buildings. A building Manager told me that they dangerous and 10 days notice should be given before roof access is given just to switch it off first! Another member of staff said more then 10 mins can cause harm.

[@thefurse]

I want to work this type of hvac equipment

[@hvac_tech3]

Good job. Watch out for squirrels, they will chew the cables.

[@oscarguzman9669]

am in from queens

[@ax2music]

If you are concerned about radio towers, and cell phone RF buy a NARDA Radman. It will tell you if you are over the Radiation exposure limits.

[@GaneshKamble-gd9cg]

👍👌

[@aftbit]

Yea, just stay away from the front of those antennas. They are directional. Give them 5 or 10' and you'll probably be fine. It's the near field that might give you RF burns. No need to worry about cancer or anything long term like that.

[@jasonwakewich121]

Get yourself a rf radiation dose meter same as tower climber's use to keep track of your exposure

[@jerrypeal653]

Had that before, ended up being head pressure control.

[@kaibaker1522]

Where was this?

[@dennisongotan412]

Your still hiring I'm from Philippines I want more experience about HVAC I hope you help to get it 🙏❤️

[@hvac402]

Would it not go out on flow before it did low suction if the pump shut down during operation?

[@HVACTIME]

Only if flow switch was tuned just right

[@bobparrott8130]

👍Great video

[@SoutheastHVAC]

That thermometer is the same one I use to check my steaks with

[@HVACTIME]

Works great in Pete's plugs

[@nnyboy320]

5G is just the newer bandwidth standard which is becoming more narrow requiring more equipment. The term 5G literally stands for 5th generation of equipment. It's still something to be respected but it's nothing harmful or scandalous

[@wd8557]

My 5g works like shit.

[@nnyboy320]

@@wd8557 it will until all the companies agree to install better gear in more places lol. That includes businesses installing repeaters on buildings so there's reception within.

[@stephenburns3262]

Not bad 65

[@rafaellara4122]

Where are you located ??

[@Cgarrison]

Where are you located?

[@stephenburns3262]

My guess that cold weather had something to do with it

[@stephenburns3262]

Second stage I think is the issue

[@jamesmcevoy1274]

80% of the time with both circuits low suction. They should make them better. Easy call though.

[@user-dd6eb9bo8r]

How can I get microprosesser control of York chiller how can change it by other please help me by video eng Mansoor Iraq

[@gregoryclemen1870]

I worked on york chillers for years, and when johnson controls bought out york from borg/warner company, the processor programming cannot be changed through the "E- PROM" chip. this was done on purpose so york can get a service call out of it. in other words they can change the programming but you cannot. you can only get the processor boards through york, and it will not come with an e- prom chip.

[@richh9904]

Back of hand only to touch motors dude. You know why. Zappi Zappi

[@jolyambong9300]

Good day sir,I'm joly ambong i lived in philippines i'm hvac r tech for more than 3 years..i'm willing to apply..what re the requirement and qualification

[@liam3284]

when the chiller is too chill. As for cell towers, its just heat. As long as they are following WHO or FCC limits, its no worse than a condenser coil.

[@ziyaulrahman287]

Sir i also work in chiller

[@mehabubmughal4336]

Hi sir i am a Hvac technician, work in Saudi Arabia 6 years experience. I would like to work in your company

[@jacobscyphers3630]

Change em both

[@oscarguzman9669]

how we can get in contac

[@kaibaker1522]

What business?

[@nestorcutabjr2122]

how to be a maintenance with your company?😅❣️

[@webluke]

I have worked with radios for wireless internet and those cell phone antennas are giving off a lot of radiation, think of a higher frequency than your microwave. Most of it will be facing away from the center of the roof, but the radiation comes around the edges like a bubble. I had heard of old-timers talking about finding bums getting warm by the radiation but killing them as it microwaves them from the inside out. I would get headaches when setting up the new 60Ghz radios (some of the 5G is 58Ghz). Long-term exposure is something they do not talk about and just push the "5G will make your life better" despite the 4G/LTE is still plenty fast and capable for years.

[@moparerrnocar]

Whats your thoughts on population control or Skynet being the sole incentive to push 5g? Most ip's won't even let you disable 5g on there router/modems anymore.

[@MazianCorvus]

Long-term exposure to that kind of radiation shouldn't have any directly harmful effects since it's non-ionizing radiation.

[@stephenburns3262]

Gotta be a sensor

[@oscarguzman9669]

where you are am from ny