This is literally exactly what the Westin elevator machines used to look like. Just a lot more plates on the “pie plate” selector. Those are 1000 fpm tho.
It’s definitely a brushed DC motor. Huge and slow, but very powerful. Instead of having permanent magnets like most smaller DC motors have, this one has field coils and interpoles. The fields are controlled by varying the current to strengthen or weaken the magnetic force they make to control speed and torque of the rotor. The interpoles do the same thing only uses the same current the rotor uses so it’s self-governing. Pretty cool stuff. 👍🏼
I believe the elevators at Sutton Place here in Wichita still use this type of selector system. There is only one working, though, and it's a shame because it's only has a 2500-pound capacity. The freight elevator has been down for nearly a decade now, and that really complicated things when they had to rebuild the old R-11 chiller.
diesel-so this is what lifts me up and down in the elevator's when i go to hospital?? thanks for showing it, and that little screw thingee, is that linked to the floors -huh! good to know stuff!!!
Yessir, it could very well be. This is a faster elevator used in "express service" as in a bottom lobby floor and then all the way up to a collection of upper floors. For example floor 1, then 15 through 30. It wouldn't serve floors 2-14. Shorter building don't typically have express elevators and are usually slower in speed, mostly 350-500 feet per minute. Most low rise elevators in building with 5 floors and less use a hydraulic elevator which "pumps" you up to the floor and releases the oil back to a tank to lower you back to the lobby. Hydraulic elevators are slow and very inefficient compared to the traction elevator in this video. Traction (elevators that use cables) motors only have to overcome the difference in weight between the car and the counterweight.
Are the fixtures & cabs original? Or have the replaced & redone them to make the elevators look modern despite still being mechanically original? I think it is rare to see a high rise elevator that still has a relay logic controller (note that I am not an elevator technician, I am an elevator enthusiast that especially likes older elevators).
I think those machines, the guys who installed them, and the engineers who designed them were amazing. There was a process and some pride they took that the industry has lost in recent decades. I miss that the most. The machines that have survived and are still in use are in dire need of replacement. They simply don’t have the safety devices today’s machines have and just plain worn out. But modern packages are so thin, so lightweight and flimsy, they won’t last like these machines did.
They can also have new parts custom produced for a reasonable price thanks to new machining technologies and 3D printing technology as long as they have the original parts diagrams! :)
mod is definitely the best department. I've been doing it for 8 or 9 months now coming from service and new equipment. I just don't like tearing cool old stuff out.
Yeah, sometimes the old stuff is pretty neat. That's why I enjoy filming it in action. Won't be long and this will be all that remains, some crappy ol' videos filmed by a hack and some memories. LOL
dieselshadowman noo dood. you're preserving our history so when new guys 50 years from now only know variable frequency drives and shit we can show them these and show em what real elevators were.
@@KTFG Bank if America place or the former AT&T building? I'm a local and have toured the Westin here and it has very similar machines to the ones in this video. Do you have machine room video or are you able to film one of the building with the 1400FPM elevators?
These are in Nashville and they didn’t have the capacitive touch sensitive fixtures. Those are kinda unique and rare anymore these days too. At least the old school Otis ones. 😆
These large motors are DC. The controller is fed with 480vac through a transformer into a drive. The drive regulates DC voltage and current to both the armature and fields to control speed and direction of the hoist motor.
Just for clarification, I did see an MG set in the background the DC traction motors. So they MG sets have been disconnected and the 480VAC transformer within the controller rectified to 480VCD connected to the induction fields and armature ? There was still a lot of noise in the machine room, thought maybe the MG's were still in operation.
In this video, most of the old systems are still in place and in service. You do not get to see the new controls, drive, transformers, or chokes. Perhaps a new video is in order?
Check out my Smartrise C4 video. It shows exactly the same controller with a Magnetek HPV900 A/C drive and motor. It’s even on the same job. The only difference is the speed and type of machine.
I’ve always been amazed at how quiet, simplistic and efficient those motors are. 👍🏻
The machine room is very clean, the equipment is clean and well cared for, and it is immaculate.
I love how quiet and smooth this equipment runs. No squealy vf drives, no jolt-y switches between speeds... really a joy to watch
Masterpiece of electro-mechanical engineering.
Now THAT is cool!
Sweet. So perfectly dialed in.
Love those pie plates
Back when Otis made good quality lifts, now they only make crappy GEN2’s
the days of equipment lasting this long, are gone! great video!
... videos of this kind should really be considered more ...
Those look like Otis 219HT machines. The braking mechanism on those machines is quite unique.
This is literally exactly what the Westin elevator machines used to look like. Just a lot more plates on the “pie plate” selector. Those are 1000 fpm tho.
Basically a giant version of a brushed motor.
It’s definitely a brushed DC motor. Huge and slow, but very powerful.
Instead of having permanent magnets like most smaller DC motors have, this one has field coils and interpoles. The fields are controlled by varying the current to strengthen or weaken the magnetic force they make to control speed and torque of the rotor. The interpoles do the same thing only uses the same current the rotor uses so it’s self-governing.
Pretty cool stuff. 👍🏼
@@dieselshadow Universal motors use coils instead of magnets too so I guess the design is very similar.
Very nice !
I believe the elevators at Sutton Place here in Wichita still use this type of selector system. There is only one working, though, and it's a shame because it's only has a 2500-pound capacity. The freight elevator has been down for nearly a decade now, and that really complicated things when they had to rebuild the old R-11 chiller.
Wow. Time to modernize, wouldn’t you say?
Maybe at the controller level, but I'd leave everything else alone.
Dam advancer and pawl magnets!
Electro mechanical logic. Reminds me of knife switch power board from 1939 i worked on.
diesel-so this is what lifts me up and down in the elevator's when i go to hospital?? thanks for showing it, and that little screw thingee, is that linked to the floors -huh! good to know stuff!!!
Yessir, it could very well be. This is a faster elevator used in "express service" as in a bottom lobby floor and then all the way up to a collection of upper floors. For example floor 1, then 15 through 30. It wouldn't serve floors 2-14. Shorter building don't typically have express elevators and are usually slower in speed, mostly 350-500 feet per minute. Most low rise elevators in building with 5 floors and less use a hydraulic elevator which "pumps" you up to the floor and releases the oil back to a tank to lower you back to the lobby. Hydraulic elevators are slow and very inefficient compared to the traction elevator in this video. Traction (elevators that use cables) motors only have to overcome the difference in weight between the car and the counterweight.
Are the fixtures & cabs original? Or have the replaced & redone them to make the elevators look modern despite still being mechanically original? I think it is rare to see a high rise elevator that still has a relay logic controller (note that I am not an elevator technician, I am an elevator enthusiast that especially likes older elevators).
upanddownadventures, they are original and are in the process of being modernized.
dieselshadowman
If possible, can you tell me what building this is in?
I'm wondering where this is too.
I miss working on them...
I don’t.... 😆
@@dieselshadow I was 15 year Otis technician.. now it's only prints...
That days you could really work every part till it was perfect
I think those machines, the guys who installed them, and the engineers who designed them were amazing. There was a process and some pride they took that the industry has lost in recent decades. I miss that the most.
The machines that have survived and are still in use are in dire need of replacement. They simply don’t have the safety devices today’s machines have and just plain worn out. But modern packages are so thin, so lightweight and flimsy, they won’t last like these machines did.
@@dieselshadow so true 😥,
Hyundai even put a max lifetime at there elevators. 15 years.
I have still Otis from 30 years old running
Wow...
I have an old Westinghouse from the 60s and an Otis freight car from the 50s still running and on service. They both need mods though.
They can also have new parts custom produced for a reasonable price thanks to new machining technologies and 3D printing technology as long as they have the original parts diagrams! :)
How many floors do these go?
These are high rise express elevators with a long express zone. 11 stops.
the lift is so fast
Definitely an express elevator, is it?
Yes. These particular elevators have an express zone.
dieselshadowman relay controlled, right?
Yes. These are currently being modernized with all new drives, controls, fixtures, door operators, etc etc. 👍🏼
So the original Otis gear-less traction machines will remain in service?
awesome are you a mechanic?
Yessir, I am. I specialize in Modernization.
mod is definitely the best department. I've been doing it for 8 or 9 months now coming from service and new equipment. I just don't like tearing cool old stuff out.
Yeah, sometimes the old stuff is pretty neat. That's why I enjoy filming it in action. Won't be long and this will be all that remains, some crappy ol' videos filmed by a hack and some memories. LOL
dieselshadowman noo dood. you're preserving our history so when new guys 50 years from now only know variable frequency drives and shit we can show them these and show em what real elevators were.
Nice!
Local 32
Local 93
@@dieselshadow Old video from 2007: th-cam.com/video/Pf7Q9qP8Hz0/w-d-xo.html
I'll get back to posting elevator content soon.
@@KTFG Bank if America place or the former AT&T building? I'm a local and have toured the Westin here and it has very similar machines to the ones in this video. Do you have machine room video or are you able to film one of the building with the 1400FPM elevators?
A real nice video of an Otis gearless traction motor. Do you know what the model number is?
One useless fact is our machines were green until the 1980s then they were all blue I think it was corn flowers blue
😍😍😍😍😍
Where were these and did these use touch sensitive fixtures?
These are in Nashville and they didn’t have the capacitive touch sensitive fixtures. Those are kinda unique and rare anymore these days too. At least the old school Otis ones. 😆
dieselshadowman Yeah those are the ones I'm referring to Lol. What kind of fixtures do these use?
They used a fluorescent lit standard push-button. Very orange and dimly lit. 😆
Were they the old Black Otis kind with the Halos Otis made? And assuming they are modernized now, what are these now?
And yes, the Old Touch buttons are indeed a dying breed. It's a real shame all of the old amazing elevators are going away due to modernizations.
are the motors single phase or 3 phase an what voltage 240 208 480 277 are the most commen besides 120 for house hold use
These large motors are DC. The controller is fed with 480vac through a transformer into a drive. The drive regulates DC voltage and current to both the armature and fields to control speed and direction of the hoist motor.
Just for clarification, I did see an MG set in the background the DC traction motors. So they MG sets have been disconnected and the 480VAC transformer within the controller rectified to 480VCD connected to the induction fields and armature ? There was still a lot of noise in the machine room, thought maybe the MG's were still in operation.
In this video, most of the old systems are still in place and in service. You do not get to see the new controls, drive, transformers, or chokes. Perhaps a new video is in order?
That would be awesome! I once worked at a hotel with DC traction elevators, MG sets I remember how noisy the MG's were.
Check out my Smartrise C4 video. It shows exactly the same controller with a Magnetek HPV900 A/C drive and motor. It’s even on the same job. The only difference is the speed and type of machine.
aw-yeah---FIRST-HA!!
高速梯