THEY HAVE MULTIPLE AC PROBLEMS
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- Опубликовано: 9 сен 2023
- Sometimes having duct detectors trip can be a hard problem to track down and because of that if its not a completely obvious problem I usually give it another chance to present itself before I try and replace the detector.
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I noticed you lined up the print on your belts 😂 I do the same thing 😂 My coworker says I'm OCD, but I can't help it 😂
I do the same and I'm teaching the younger guys at work to do the same as well
Makes sense then you can tell at a glance if there's a problem and belt is slipping. (Seen that on this channel)
I do the same thing...at least in my mind....it shows belt slippage
@@stefanmondello8220 if that is done right everything else is to.
Same, it looks nice and if you've done everything perfectly they should all stay in sync. 4 or 5 belts running in sync looks nice.
One thing I have noticed is that alot of techs set the belts where they ride deep in the pulleys. Running belts that deep actually wears them out quicker. The topside of the belt should actually just be a “hair” below the top edge of the pulleys. Just a FYI. That was something that I was taught when we use to replace the belts on pumps.
One thing I have to say is , you will NEVER make everyone happy or have the same view point on everything . Do what works for you . And thank you 😎😎😎😎😎
We have to do what works for the customer.
Hey Chris could you give us the link for the laser alignment tool you used on this video and tachometer thanks
I will discuss this on my Livestream this evening 9/11/23 @ 5:PM (pacific) on RUclips come on over and check it out ruclips.net/user/liveqOnSFPL3_XU
"If one object is vibrating furiously, *everything* is vibrating" as me old pa used to say, not sure if it was an innuendo or a lesson from life.
I am constantly changing out failed blower wheels on those units due to the wheels having individual blades break off, then it gets out of balance and shakes itself to death. Of course if you're doing one wheel, you go ahead and bid two new wheels, a new shaft, new bearings, and new pulleys because every part of that blower system has to be cut apart. I don't bother trying to pull the shaft out at all since they are too rusty to budge. I just cut everything up with a grinder and rebuild the whole assembly. I dealt with a unit with a close wall just like that kitchen one, but I had just enough space to reach the back blower slot.
We have to appreciate the position of the customer as you point out. Just because we might be a bit anal and want everything about the unit to be perfect, no one wants to fork out the cash that it costs to do that.
In this day and age these businesses are often times have a hard time making ends meet. Reasonable functionality is where it's at.
Perhaps the fire inspection guys tested the alarms in the building by shooting some "fake smoke" into them - that's a test we have to have done once a year in the UK in commercial premises from memory. Usually they do it whilst the alarm system is in maintenance mode so it just alerts that they've triggered the detector, but if they did this on the building detectors and the AC pulled in enough of the fake smoke it may have been enough to trigger it.
As a former CA licensed fire alarm technician, I see that the "inspector" didn't reset the duct smoke detector after it passed. I would shoot "smoke" into the detection chamber to see if it would go off. If it did, great, it passed and I'd reset it if it had a reset button, otherwise the DSD was setup badly and needed to have it's detector head removed and put back.
Your "maintenance" mode was a general purpose switch that was level 3 secured at the first company I worked for. It was labeled for the customer if they paid for it, if not, we technicians set it up for our use as it disabled all alarm outputs. For other companies panels we would find a button comparable to this or individually disable the output circuits.
I will discuss this on my Livestream this evening 9/11/23 @ 5:PM (pacific) on RUclips come on over and check it out ruclips.net/user/liveqOnSFPL3_XU
Residential ice machines are gross too. Never seen one without mold growth. Clean cycle never gets it all out either.
exactly, same for "refrigerator ice/water dispensers" just take a peek up at the chute/water nozzle area! yep, back molded in a thick slime, the more it's used the thicker and moist the slime is. 🤣🤣
First unit I would’ve washed the blower wheel since you had it out for a good distance. Some coil cleaner in a pump sprayer and some water using a pump sprayer I’m sure that would’ve helped more than it could of possibly hurt the unit . Good video 👍🏼
Being a kitchen mechanic now I know to not get ice in my drinks. There's also certain places we service that I will avoid because the kitchen has bugs in it and I'd rather not have that in my food
Great video Chris! It was crazy how dirty that first unit was.
Next time you swap out a variable speed motor pulley, swap it for a fixed speed pulley so the belts can be alined better. Variable speeds are only for setting up the air flows and should be replaced once you know what size pulley is needed. I'm still trying to teach the office guys at work this 😅
Makes sense then you can tell at a glance if there's a problem and belt is slipping. (Seen that on this channel)
Thanks to VFD speed adjustment are easier now, but only if the system designer didn't mess up with the sizing of the unit of course !
And this went into the wrong comment 🤦 was supposed to be under belt alignment comment
This is the way. Vari-pitch are not designed for long term use. They're just for air balance at the beginning.
I learned very early on in my career that you can use a Tape Measure across the faces of the pulleys to align them. Now it’s not perfect by any means but it will get you in the ballpark and it’s a handy tool every tradesman owns. It’s whatever length you need it and it is as straight as the sheer that cut it at the factory. Also that blower vibrating, could be as simple as excess dirt on the wheel blades causing it to be out of balance, or one of the bearings worn out. Both of which would require dismantling part of the unit to get to.
When you let it free to rotate, the blower wheel rotated on it's own, overshot, then came back to a preferred orientation - that means it is WAY out of balance, enough to overcome the friction of the bearings and the drag on the belt to force the heavy side down.
I will discuss this on my Livestream this evening 9/11/23 @ 5:PM (pacific) on RUclips come on over and check it out ruclips.net/user/liveqOnSFPL3_XU
A small piece of paper or insulation on the blower wheel will cause vibration . I usually spin the blower wheel and let the tip of my fingers touch the blower wheel and listen to the sound as it goes around and if one is loose it will have a different tone and you know the wheel is starting to come apart
Yes sir, you are my longest subscription, I'm happy with all of the things you teach me.
What I noticed right off on the first unit was all the belt debris, but the belt seemed generally okay.
Was there any glazing on the shoulders of the belt?
Anyways, nice diag. I really enjoy watching you work.😀
Thanks. When you let go of the blower wheel that was vibrating it rotated as the heavy side moved to the bottom. It seems like at the least it's out of balance.
probably schmutz buildup on it and distortion with age, but possibly factory balance weights rusted off and went bye bye
Great site. been watching your videos for some time now, I found your channel when I was looking for troubleshooting processes for my current planned PM staff. Your videos are great in detail and explinations on finding. I like your review of the tools you use and the pro's and con's as well.
I would definitely hire an hvac guy to come for routine maintenance if he knew his trade like this guy does. I’ve been through about 5 hvac guys and most didn’t even notice dirty coils, much less something technical.
We had several units same vintage that would develop cracks/ breaks on supply fan motor mounting plate.. other wheel issues but replacements did solve all issue. Good luck
I will say.....Lennox does make it easier to replace failed components. The compressors, boards, caps,relays etc etc are right there and easy to get to. Their evaps are a pain to get to and replace. Did one a year ago with a re-heat coil....it kinda sucked.
Very pleased to see you use laser alignment, tach etc etc....thats the true professional way. I have a lot of these tools myself, if i don't....the company has it for use.....the rifht tools for the job can separate a good tech from a great tech.
Thanks for your visual display of professionalism.
The unit with the vibration: Needs a massive cleaning and the belts and pulleys needed to be replaced. Three compressors, all functioning, 4 condenser motors, all good. I would hope that any customer would question the tens of thousands of dollars to replace a working unit. I take my car to the local garage with a leaky radiator. He says: That car is 20 years old. It needs to go to the crusher immediately and let me sell you a new one for $60,000 I respect how hard HVAC techs work, but it seems that the first response is always "you need a new unit"
What’s the alignment laser and tachometer you are using?
Have a link to the alignment tool?
I’m wondering then same. Please add
Great work 👍
That blower is wider than 60"? Pulleys are in need of change. I think some could make a living just changing out pulleys and sheavs.. Laser alignment tool?!?!? Never seen one. I just use a straightedge. Just the way I was taught coming up. Works good. Throw a level onthe motor when adjusting that type. Keep it level as it tightens. I do not use a tach. I take the current of the motor and check it that way. Nice vid.
8:24 you can see the vibration in his hands.
You can do that alignment with a piece of thinish string or cord across both pulley faces. Any disgrepacy is instanly obvious as you look down at the cord from above. I know, old school.
I will discuss this on my Livestream this evening 9/11/23 @ 5:PM (pacific) on RUclips come on over and check it out ruclips.net/user/liveqOnSFPL3_XU
What is the Part number for lazer
I worked in resturants for years - those reach ins and drawers do get cleaned - just not very often because they are very hard to access and most resturants and workers don't have the proper tools or expertise to dismantel them, nor should they. They are just not setup for it. We would do it like once a year overnight and struggle to get it done before opening the next day
For sure can see the vibrations
What’s the laser alignment tool you use?
The C/N number on the the data plate tells you the blower package that was put in at the factory
Regarding the smoke detectors it depends on if they're photoelectric or ionization type detectors. Ionization detectors are going to be more sensitive to dust and dirt buildup. Get enough dust blowing through either type is going to cause nuisance tripping. In doing PMs on them we would run long bottle type brushes through the intake tube to clean out the dust. Many of the tubes would stick out the opposite side of the units with rubber plugs in. The plugs could be popped out and the brush run all the way through. It was sop to clean the tubes, and the inside of the housing as well as blowing out the sampling chamber of the detector. No need to pull out the tubes. From the looks of those detectors they have not been maintained.
No, we didn't just buy new ones because we like new better than we like old. Always had to remember who's paying and what makes the most sense. Don't ever let the customer get the perception that we have some kind of 'fetish' for new.. They won't trust us once they realize this when we DO have a good case for buying new parts. It's the story of the boy who cried wolf.
that would be a great video,blower balance.on some i have had success,moving weight around.thanks for sharing.
take it to a shop the rebuilds and balances them, fiddling around in the field trying to balance them will be futile. 😬
The duct detector in my school gymnasium has tripped multiple times in false alarm.
The problem is that they were checking for air flow in the kitchen, when this unit supplies air to the kit hen
Oh no Chris is breaking s*** again lol just busting ya chops my friend.
Great job and video Chris. What make of laser alignment tool do you have.
I will discuss this on my Livestream this evening 9/11/23 @ 5:PM (pacific) on RUclips come on over and check it out ruclips.net/user/liveqOnSFPL3_XU
System needs cleaning , replace all pulleys belts, reccomend a replacement cleaning. Nice video looks good
You laser tool only actually checks parallelism. But, because pulleys can have different flange thicknesses, it might not be checking the planar positioning.
You are absolutely correct, I actually addressed that in the closing words
@@HVACRVIDEOS I did not get to watch until the end. I had a service call on a class A RV basement unit. I think I have a bad freeze sensor since it seems stuck in heat pump mode and will not cool even though the board is calling for cool on both compressors. From documentation, seems to have latching reverse solenoids. Is it ok to apply reverse polarity to these? (Made by Coleman.)
so, measure and allow for it? or as much as possible, seeing the different center thickness and belt spacing from sheave to sheave.
you would have to used matched equipment from the same manufacture.
@@throttlebottle5906 That is what I would do just using a straight edge. A 36" steel rule would do in most cases. No need to by fancy, expensive equipment requiring batteries and is more likely to get broken during transport and use.
I my County a duct detector will automatically set off fire alarm and shut down all air handlers unless they are set up in zones for ventilation due to a fire.
Yeah different municipalities do different things with their fire codes, I will discuss this on my Livestream this evening 9/11/23 @ 5:PM (pacific) on RUclips come on over and check it out ruclips.net/user/liveqOnSFPL3_XU
Where can I get that laser alignment tool! That thing is awesome!!
Love the process. Customers are always educated on what condition their equipment is in. That’s our job. When something breaks tomorrow or next week, month. We told you. Never had a customer that said you were just here and now it’s broken again. CYA whether they have the money to fix it or not. I use lots of pictures as well in my service reports. Your at the top of field. Hack free zone.
Tired of getting ripped off and being charged for shoddy work I started to diy my A/C and realizing how techs aren’t doing the real maintenance to make my A/C run but to keep it breaking down. My A/C is 24 years old now running strong. Keep the techs away from your A/C and learn to do your own maintenance.
I wonder if it was the belts rubbing on the pulleys causing the detectors to trip
I like your laser alignment tool where can I purchase one of those at?
Was that blower motor running backwards
Whats the tool youre using for pulley/belt alligment ? At 5:59 ? Im looking for one but they are all 2000$ ++ , thank you , love your videos !
Hey what’s up man. I really want those tools you used to check rpm , alignment, and pulley removal. Can you give more info in where to buy those tools l. Really appreciate it
What is your opinion on Daikin rooftop package units in the 5 to 7 ton range?
Blowers look also very dirty. Maybe that could be part of the vibration issue?
Where did you buy the laser alignment tool?
Those really "dirty" restaurants make really tasty food! 😋 😋 😋 😆 😅 😂 🤣.
What grease did you use on the pulleys?
How is it safe for the blower assembly to be running in such a dirty environment? Thats so much dirt that could be sucked up and then inhaled by a person.
Where did you get that lazer alignment tool?
From 14:22 to 14:26 ,we can see something spinning around in the fan.
Start of video thought: the fire inspectors used test smoke?
Hopefully it was test smoke
Looks like it's olive garden
Time for a new unit
What program r u using for all the wireless probe setup to get all 4 on the screen
It’s called measuerquick
I Harry ever seen a 4 compresser unit
20 yrs old with original compressors and no leaks I’m assuming that’s pretty good
What exact laser alignment tool is that
What laser level are you using?
If it intensifies or gets worse. Your not wrong lol :p
The shaking sound like full load washer spinning
I had to clean are ice machine at work nasty as hell!
2:20 may I ask why those units aren’t being cleaned? And I dont’t mean the evap or condenser - I mean the whole inside…
COST Most customers will not pay for cleaning beyond the coils. Heck many aren't doing any PMs and only have filters changed when the units literally freeze up.
@@adamdnewman I wonder why the health & safety inspectors don’t check those RTUs…
I will discuss this on my Livestream this evening 9/11/23 @ 5:PM (pacific) on RUclips come on over and check it out ruclips.net/user/liveqOnSFPL3_XU
Where can I purchase the laser alignment tool from
I will discuss this on my Livestream this evening 9/11/23 @ 5:PM (pacific) on RUclips come on over and check it out ruclips.net/user/liveqOnSFPL3_XU
Can we get the link for that laser alignment tool?
If you don’t mind sharing it or the brand name or part number that would be great, I can’t seam to find one like it
whats the laser alignment tool you use?
Its made by a company called Bestorque I think , I will discuss this on my Livestream this evening 9/11/23 @ 5:PM (pacific) on RUclips come on over and check it out ruclips.net/user/liveqOnSFPL3_XU
Is the return in the kitchen?
That's a'lot of probes.
Can you dry ice blast the blower wheels in place?
while that cleans the blower wheels nicely, it would send all the dirt an debris where? into the ducts below to be blown all over inside the building. 🥳🤡 that = kitchen/bar/food place obliterated
What alignment tool is that?
I will discuss this on my Livestream this evening 9/11/23 @ 5:PM (pacific) on RUclips come on over and check it out ruclips.net/user/liveqOnSFPL3_XU
Bladt a hole through the other panel and pull it out
looks like fan is going the opposite way
Bearings!!!
47 MINUTES RECORD TIME
🇦🇺
Here is an unawesome comment for you. Love the videos.
Ha ha thanks bud
Hear me out.
I wasn’t exactly able to see how the magnet numbers were set up but for arguments sake I’ll say it’s …..-2,-1,0,1,2,3…….
What if you used a caliper to quickly measure the thickness of each pulley figured out the difference and compensated that on the alignment.
So instead of zero an aligned pulley based on the thickness of the pulleys that we measured would be -1 or 1 or something like that
Hopefully I’m effectively conveying my thought
Makes sense
✌🏾
DSD's are not daisy-chained together. They are placed on the return air and exhaust air systems and only operate on those systems alone.
You are allowed to change the smoke detectors in air handling units? As far as I understand fire alarm system stuff, licensed companies and technicians are the only ones allowed to do this in the state of CA. Changing them yourself opens you up to liability issues. I would recommend you don't touch them. Leave them to fire alarm companies as I suspect these are just fine in spite of the dirt in the AHU. Cleaning the sampling tubes should be done along with changing the filters. If they fail testing then the DSDs can be replaced but that's for a fire alarm company to deal with along with your company.
Yeah they actually can be, if you follow the instructions that the manufacturer send there is basically a way you can wire them to have a global shutdown between all the detectors in the building that way they power down all the indoor blowers when any one detector goes off... I will say daisy chain is not really the right term but my brain typically works a little different in that I say things in a way that I think people will better understand me.
@@HVACRVIDEOS Yeah, a fire alarm panel can and will trip a relay upon alarm that can send a signal to AHUs that can be used to shut them all down or do floor dependent stuff or other situations depending on the building(s). They can also interface to other systems like elevators, fire doors, stairwell doors, etc. (A concert pavilion I worked at had exit maps displayed to the audience upon alarm.)
When this signal is sent, I make sure that the FACP is doing its thing first and then check on your stuff to see that it shuts down. If no shut down, it's time to do a wiring check and see that the signal is making it to the AHUs or tracking down where the issue lies in the wiring.
(I've seen diode logic and software programming for this stuff.)
The detectors are capable of shutting down all the other detectors without the panel even being connected, there are so many different ways global shutdown can happen whether it be relays in the fire alarm panel.and or just using the detectors built in global shut down feature
And yes we are allowed to change them here, the alarm companies usually request us to change the detectors and they just want to land their alarm wires in our detector
I will discuss this on my Livestream this evening 9/11/23 @ 5:PM (pacific) on RUclips come on over and check it out ruclips.net/user/liveqOnSFPL3_XU
That thing is nassstty lol
Businesses are so Clueless as to How Important keeping their Heating and Air Conditioning Very Well Maintained is since their Customers Comfort is Critical. 🤪👎
693 Thumbs uP
3:15 why not? There’s enough space and you might tilt it aswell…
unit needs a car wash 🤷🏼♂️
That's funny, They are keeping tabs on you where you work, That's like creepy and stalking crap, tell them to get a life.
What are you talking about?
Whatever, man, you don't like what I say, then go pound sand.
@@johnwalker890 no one one knows what you’re talking about. I’m asking you to give a time stamp and explain.
I really don't have to explain nothing, Chris said people try to figure out what location he is working at on his videos, but if you guys want to get involved with that, that's on you, I'm not trolling anyone. I'm not going to explain every comment I make, when some of you guys like to attack me for some unknown reason.
@@johnwalker890 no one is attacking you. When you post a comment, expect people to comment back, that’s the purpose of the comments. It’s a community forum. I don’t know how you can perceive a question as an attack.
Big deal and boo hoo. Ya Know?