Carrier AC making loud noises

Today I get to try and figure out why a package unit sounds like a lawnmower.
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[@jamesg9936]

Why isnt your channel more popular??? Your videos are awesome!

[@jimmysegovia2688]

Very true!!!!

[@gregmercil3968]

I saw this video a few years ago when I was still in HVAC school. I came back to this video again yesterday morning because I got to replace virtually the same motor on virtually the same unit yesterday. Except it was a 20 year old Carrier heat pump. Anyways, funny how I was kinda dreading this repair as I’ve never done one of these bigger 3 phase blower motors on one of these Carriers before. It was surprisingly not that difficult. I discovered that the entire plate (the one that’s about the size of the blower housing) that the motor mount plate adjuster plate (whatever it’s called) comes off, making the job a thousand times easier. And luckily for me, the factory tape holding those bolts in was still intact. And you weren’t kidding about the motor weighting about 1,700 lbs. the only difficult part of the job was roping up that heavy ass motor 40 ft up onto the roof, and trying to figure out my new belt tensioner tool that one of our controls guys gave me the day before (because he didn’t need it anymore lol).

[@RandomElectronics1]

The refresh rate of the camera made the blower pulley look like it was turning slowly. In reality, the blower pulley is turning much faster.

[@jonnymac31]

It was sweet because they looked like they were turning in opposite directions. Pretty cool effect.

[@jimmyp5487]

Love the “not done yet....sticker time” 🤘

[@curioushvacguy6876]

You and me both!

[@RalphMercuroMusic]

I've had good luck with spinning the assembly with the pulley loose and the belt installed. The belt will pull the pulley into alignment. Better than my eye that's for sure!

[@chrisscerbo5731]

it's pretty cool how your camera shows the blower wheel moving. it's like in slow mo but the it's not cause we can see the squirrel cage is moving regular speed.

[@curioushvacguy6876]

Lol- it has something to do with the cameras shutter speed- Its weird watching helicopters fly when the cameras shutter speed is a little slow

[@FireandFrostHVAC]

Another quality Curious Guy HVAC video, thanks!

[@lee-johnson]

Nice job. Looked like a car dealership that I’ve been to. 😆

[@douro20]

I once built up a portable fan for a large building which had no A/C. The motor was a 1.5hp 3-phase large frame motor from a 1940s air compressor, and the fan itself was sitting in the back of another building with a terribly undersized motor on it. Despite one of the pillow blocks on the fan being terribly worn the thing ran like a top. BTW that kind of metal doesn't crack, it tears.

[@curioushvacguy6876]

How big of a fan are we talking- 4 foot in diameter? also how did the 1940s motor hold up?

[@douro20]

@@curioushvacguy6876 It was a squirrel-cage blower, probably about the size you would see in a 15-ton unit. That motor was in excellent shape.

[@curioushvacguy6876]

very cool

[@actechformallyyomama746]

The motors are bench tested at the factory. That’s why it was wired for 230v.

[@actechformallyyomama746]

I started when I was 14 I’m 57 now lol. Had a neighbor with a company. I started working on everything from 06Es to window units.

[@gregmercil3968]

I thought the bad motor just by itself sounded more like a garbage disposal than anything. 😆

[@curioushvacguy6876]

your exactly right--

[@dogbyte555]

That's amazing. The motor turns clockwise, but the blower turns counterclockwise.

[@bryantylerservices]

Very good job! Appreciate your visuals and thoroughly checking on components and taking pride in your job.. A key that is lacking in our industry! Im very respectful in your work and yourself! Thank you! Bryan Tyler Refrigeration Helotes,Tx

[@brad346326]

I learned a few things with the diag of the motor and noise thanks

[@curioushvacguy6876]

Glad it helped

[@Cragified]

Bearing was likely just shielded and the belt dust mixed with the grease to make a wedge that caused the rollers or balls to slide at speed. Conversely to what people will try to sell or think bearings shouldn't be low friction. They exist to bear a load, hence the name. A good bearing should be smooth but stop fairly quickly from the grease drag. And you can over grease some bearings and cause them to slide instead of roll. (Hence why you don't grease garage door roller tracks)

[@firemanmunk1]

This was awesome at the end 😅🤣😂

[@edp9743]

Use a long screwdriver as a stethoscope, motor running CAREFULLY blade end on bearing and other on ear, this will detect many ghost noises. but be carefull!

[@curioushvacguy6876]

Thanks

[@xelaju8]

Nice video. Thanks for sharing. I am learning thanks to your time and effort to film and work at the same time. Much appreciated.

[@roadiesgarage3816]

Love the sticker placement. If ya was in AZ I'd hire ya for my hvac work for sure! Sound diagnosis thought process for sure man!!

[@curioushvacguy6876]

I appreciate that

[@beardowns8050]

👍🏽 Videos are great brother! Keep em coming

[@airmechanical7163]

Nice work. The sticker is a cool touch.

[@jimbola77]

thank's partner for sharing!!!!.

[@khanshahzad77]

nice information in your every video thanks for, sir I have a question I have trane 10 tons of package unit in this A/C i would not understand what kind of problem, because around 1week the a/c working normal but after that on-off-on -of when I off power sully to the a/c then after 1or 2 days I give power sully to the a/c then is again normal, please can you advise me about? thank you

[@dukestripling6301]

I noticed when you were hanging the new motor and plate back onto the machine you did not show how you got those upper mounting bolts back into the slot, and hold them while lifting the motor onto those bolts. How did you accomplish that because it takes me both hands just to lift that heavy motor into place much less hold and align the bolts to the motor mount plate. Thanks

[@curioushvacguy6876]

I think what I did was sort of put my elbow down and prop it up with one arm, so make sure you eat your wheaties before attempting something like that- lol

[@Hvacstuff89]

Nice find. I'll have to remember that

[@oldtimehomestead1554]

Nice catch sometimes those noises are hard to pinpoint.

[@matthewbeddow3278]

I really enjoy your videos & you have an excellent beard, I've tried growing mine longer but for some reason, it goes curly but I'm giving it another go. Anyway, I really like your videos really awesome.

[@Tommy_boy007]

I had an identical Carrier unit doing the exact same thing. To this day, they still haven't approved a new blower motor.

[@curioushvacguy6876]

Is it still running ?

[@Tommy_boy007]

@@curioushvacguy6876 It was the last time I was there, haven't seen it since November.

[@johnnysaltyaircrabcake8030]

what was the amp reading on label compared to meter reading

[@johnnysaltyaircrabcake8030]

PLEASE PLEASE PLEASE use Anti-Seize on the shafts i tell my co-workers

[@curioushvacguy6876]

I will do that

[@jphvac5725]

Another great video! Do you all install carriers or just work on lots of them also? Good job finding that noise!

[@jphvac5725]

Curious HVAC guy ok I understand that. I’ve installed hundreds of carrier split systems possibly more than I’ve worked on but haven’t installed as many rtu’s as I currently worked on.

[@jphvac5725]

Curious HVAC guy definitely prefer service more than installs. But I don’t mind changing out and commissioning rtu’s they can be enjoyable. But bet I’ve installed at least 50 carrier condensers and coils in doublewides this year. And only three full new home installs.

[@tommymason334]

Good stuff bro.👍👍. You a fool too with your stickers tagging shit.😂😂. I luv it.!!! Keeping coming bro. Be Safe...🙏✌

[@gas_man1565]

wow what a difference. see her prrrr!! great video

[@bluered1322]

I DON'T KNOW WHAT WE'RE YELLING ABOUT!

[@xXBuckOFiveXx]

*LOUD NOISES!!*

[@geoffhoweth]

@@curioushvacguy6876 I love Cheese

[@mountain177]

I like trains

[@sivalley]

I like turtles.

[@yamohvac3181]

Nice job bro thanks

[@joea2274]

Oh come on I like the sound of the lawnmower that's how you know if you left it in fan only mode

[@HVACRNorth]

Good vid. Bondus bud

[@clarksafg]

Thank you.. you rock

[@curioushvacguy6876]

Thanks--

[@jonathanraul4086]

Ty great video

[@curioushvacguy6876]

Thanks Jonathan

[@robertpeters9438]

Use an automotive stethoscope to find the noise source.

[@UNITEDHVACSYSTEMS]

Good work #mechanicalhvacr

[@curioushvacguy6876]

Thanks

[@hvac01453]

Good vid

[@user-tr7hp1de8u]

Good find....👍

[@ThermalDynamicSevices]

Good video but you really should have put a straight edge on those pulleys to align them

[@curioushvacguy6876]

Thanks Steven- Your right, that is the very best way to do it to ensure they are perfectly alligned-- I appreciated the feedback

[@ThermalDynamicSevices]

Curious HVAC Guy No problem, Keep the videos coming, I’m really enjoying them after finding your channel

[@lewiemcneely9143]

Harmonics can be bear sometimes. Good deal!

[@curioushvacguy6876]

Thanks

[@lewiemcneely9143]

@@curioushvacguy6876 Sure!

[@robertlyman9789]

Wonder if it sucked up a piece of paper?

[@jimmysegovia2688]

You betcha!!!!

[@gerryrig5012]

Sound Like A Dryer Spinning...

[@joehead1294]

No peckerhead on the new motor?

[@Imwright720]

Do they replace the bearings in the old motor and sell as refurbished or just scrap them ❓

[@joea2274]

Couple of hours if you're lucky.

[@jonnymac31]

@@curioushvacguy6876 more time to drive in town to get them than change them. Small puller and they pop right off. I keep a small plate of steel on my van. I put the bearing on the steel and heat it with a map gas torch underneath. You can use a melt stick to tell when its hot enough. Throw it on the shaft and let it cool. The steel plate I only use on small bearings. Mid sized and bigger just best to get a oven or induction heater. I guess it just depends on your labor rate if its worth the time.

[@mountain177]

It's not a terrible job to do. Essentially you take the 4 long bolts loose, pull out the front, on the shaft there are 2 press on bearings. Sand and clean the shaft of the motor, grab your puller and zip each bearing off. Grab a deep well socket or something like that maybe even a piece of pipe and hammer or press on the new bearings.

[@HughesManHVAC]

I was wondering if you used a microphone, what mic do you use?

[@curioushvacguy6876]

Hey Hughesman- On that video I did but I wont reccomend the lapel mic I used, it was a cheapie off Amazon-- twice ive used it and the audio playback was awful, alot of crackeling and noise. Im currently looking into different options, maybe a smaller condenser mic that can be attached to the phone, im gonna get 2 or 3 different ones and see how they do

[@geoffhoweth]

Hey carrier why not just put a belt tensioner pulley on the side of that blower housing it has plenty of real estate. Now how ever i know you can move the motor back and fwd to tension the belt but heck why not ???

[@geoffhoweth]

@@curioushvacguy6876 Hey man Thanks I am new to your channel just subbed 👍👍 LOVE It

[@lonestarhvacr7120]

Is the yellow thing with wires coming out of it on the blower housing part of the ems for the building? Cant say I have seen one of those on any inits here in Texas.

[@shawngray5787]

That's a Honeywell economizer return air temp sensor

[@jonnymac31]

I don't understand why they mount that motor to where the sheave just barely catches the end of the shaft. Seems like it puts un needed stress on the motor bearing.

[@jonnymac31]

@@curioushvacguy6876 that same vintage unit is at one of the factorys I go to. Not even 3 years old. Cooling only for a garage so it only runs when its really hot. Anything close to comfortable outside and they shut it off and open all the doors. Bottom line very little run time. Same issue shaft bearing wiped out. Its pathetic. I was a blonde one from mounting the motor over on the sled to get the sheave closer to the motor, but in the end, I ended up putting better bearings in it and stuck it back where it was. I'm curious to see if better bearings hold up better in the same situation. Your content is dope man. Thanks.

[@sergiomontoya7929]

Why do u put that sticker is that the name of your company?

[@IHVAC]

You can make alot of money working on carrier RTU's

[@curioushvacguy6876]

Thats exactly right

[@asaphvac]

👍❄🔥

[@robertkleinsasser1412]

I had a good one a few weeks ago. 2 years old 20T York RTU vibrating badly. Found someone stuck the wrong key way into the adjustable drive pulley. Caused the gulley to pitch about a 1/32 of a inch. Put in the correct key way and now the customer is saying they can hear the unit run anymore lol

[@scottwillow332]

How do they come up with the tonnage of the unit? Is it the amount of cfms of air flow?

[@curioushvacguy6876]

Hey Scott as far as I understand it, the tonnage is in reference to the amount of heat removal the unit is capable of and not the air flow- however there needs to be a certain amount of airflow for the unit to hit that tonnage. For example if its a 2 ton system it is capable of removing 24,000 Btu's of heat energy, one Btu (British thermal unit) is the amount of heat needed to raise the temperature of one pound of water one degree. hope that helps

[@dukestripling6301]

What type of gloves are you wearing and where do you get them

[@curioushvacguy6876]

They are black nitrile gloves made a company called Venom Steel- I buy them at lowes or Amazon

[@knockitofff]

On the motor side, it's called a sheave, kids, the pulley is on the driven side

[@elijahvee3430]

Depends how much you care about it.

[@knockitofff]

Elijah Vee how you apply yourself in life makes all the difference, that’s why we have rich guys and bums

[@elijahvee3430]

knockitofff tryna call yourself a bum ?

[@knockitofff]

Elijah Vee no, and poor grammar is another sign.

[@elijahvee3430]

knockitofff you give me all the signs of broke asshole...

[@winkhvac62]

I want stickers new subscriber

[@steveblake8766]

#111 Thumbs up

[@johnbutton4013]

Maybe if you blew the motor out you would not have to replace the motor. Seems to me there the motor itself was out of balance.

[@jeffreymurdock8366]

Just because a bearing spins freely doesnt mean it isnt bad. As a technician you should already know that. I'm actually a little let down.

[@rocker8692]

You should show what you do,instead of saying what you did,imo

[@Mike-yh8tv]

Thanks for your videos and taking the time to show us in such great detail…have learnd a lot. Your channel is the most informative, out here dont let the hater change you! i will continue watching.