Elevator Lift Contoller Machine Plant Motor Room Old OTIS Selector

[TheTheo58]

Nice Video and very clean well maintained machine room. Those elevators were built to last seems be running very smoothly.Like the floor selector those are amazing machines to watch in action! Those are indeed gear less DC traction machines. I had a maintenance engineer's job at a hotel, six story building geared DC traction machine with an MG. Unless that access card and reader restrict unauthorized access, by others with access cards, I'd like to see a keyed lock as well.

[danielrichardbond]

A fantastic video and a great example of what a machine room should really look like.

[jorologo]

@danielrichardbond

Thank you for viewing.

Just check out my recent video that was uploaded today ( Trapped in Elevator in China town)

[CTKTMRIDER]

VIP 260!  Good ol Otis stuff! Will last forever!

[jorologo]

@CTKTMRIDER

It sure does. I used to service an old OTIS 2 speed AC (60 yo) Elevator at a small block of only 8 apartments.

To this day it still runs and looks as good as new.

[kalvijay1]

i made this selector contacts in india please mail me your inquiry adenterprise@live.com

[jorologo]

@kalvijay1

Very reliable elevator controller equipment.

[Darkmotive]

Great video BUT I wanted to see more of the Lift Motor itself & the lifting gear :-)

[jorologo]

@Darkmotive

Just check out some of my other videos.

You'll see heaps and heaps of what you like to see.

[corp55555]

Thanks for filming this. fyi: The 1920's Foshay Tower in Minneapolis had a machine room similar to this until 2007: brass motors, rotary selectors, big relays. They were like pieces of art -- very cool to look at but a major headache to keep working. Then the "W" hotel gutted everything and installed Shindler.

[FranceHopper]

Ah. The beautiful sound of relays.

[tomnwoo]

oooh an advancer selector getting rare now

[jorologo]

@tomnwoo These selectors and types of lifts are becoming rarer. Its all going solid state.

[jorologo]

@tomnwoo

A beautiful piece of engineering now being replaced by solid state soft ware.

[mukatuna]

Selenium rectifiers... and they're still working OK?

What's the purpose of the rotary converters? by the control gear? To make DC?

[jorologo]

The Selanium rectifiers convert AC power to DC so as to run all the controller relays and field apparatus. The Rotarty Convertor Generators alongside of controllers supply the large DC hoist motors. DC power has always had the best speed control of hoist motors. Today hoist motors run on variable AC where DC is pumped into these motors to vary speed or else there is variable frequency invertor drives that are ok but it still does not compare with DC motor control.

[mukatuna]

I was surprised to see selenium devices still in use.

In the 80s I was working at an electronics shop here in Bristol, which was refurbishing and re-manufacturing educational power-packs for schools.

These power-packs where originally manufactured in the the 60s. And one of the things we done was to always change the selenium rectifier to a silicon one, due to their unreliability. We called the selenium ones 'cat's piss rectifiers' because of the stink they made when they often failed.

[jorologo]

The Old rectifiers go for ever. Pretty sure that I will still see them hanging around for the next 20 years. As for the smell they give out when blowing up it has always been an easy way to detect that they have blown.

[bearchoirfan]

Japanese DC machines tend to use choppers to convert AC mains directly into DC for use by hoist motors, as well as all switching equipment. This saves a lot of power.

[mrmattandmrchay]

Those look like Gearless machines, but there are only 6 leveling plates on that selector? Surely the building cannot have gearless for only 6 landings?

Would have loved to have been with you on this visit - those selectors are cool to watch!

[jorologo]

You are right on the money. Gearless at 400fpm and pretty fast for only 6 floor levels. This building is a commercial building consisting of 4 levels of office space a ground floor foyer and large under ground carpark. The floor height distances are higher than normal. Thats probably why they have used gearless. I have also worked on an office tower in Sydney only 22 floors where the lifts were travelling at 1200fpm. At this speed you would normally expect the building height to be 30+ floors.

[jorologo]

These lifts are going to be modernised with new Micrprocessor controllers. The Selector will be gone.