Don't leave your lift motor room unlocked!

Подписаться 47 тыс.

Просмотров 764 тыс.

50% 1

...else I'll explore it in the pursuit of my interest of lifts!
This is quite an old video. It was filmed back in 2011. Please take a look at some of my latest videos.
.........
For those who don't know me, I've been fascinated in lifts since I was young. It doesn't dominate my life LOL, but I'm particularly interested in the older "relay" and "light bulb" generation of lifts (before LEDs were invented).
Fascinating machines these! The beautiful "whooooop" noises and those greasy fan motors!
These were installed in about 1980. I remember the building going up although I was very young.
The PLC (programmable logic controller, as shown in vid) were fitted in 1995, so these controllers have had an upgrade. They were probably 100% relay controlled before 1995.
hing LEDs).
..........
The MRMATTANDMRCHAY "ONLY THE BEST" VIDEO PLAYLIST (updated regularly):
• MY BEST VIDEOS (only t...
Facebook:
/ mrmattandmrchay-110000...
Please give us a 'like', thank you! :)
..........
MERCHANDISE AVAILABLE! Please support our channel by getting Siren and Lift merch from: www.mrmattandmrchay.com
..........
IMPORTANT NOTICE ABOUT SAFETY AND RU-vid:
This is a RESPONSIBLE and RESPECTABLE channel.
My channel does not promote or glamourise dangerous activities like lift surfing.
I've seen recent evidence of kids surfing, or attempting to surf lifts which did not emanate from my channel. A warning in a video DOES NOT exonerate you if harm should come to a kid that was copying something that YOU have portrayed as a fun activity.
For further info, please see these links:
'KIDS' surfing lifts: • Teaching KIDS TO SURF ...
elevatorcommunity.fandom.com/...
/ 831498013530296
..........
THE MRMATTANDMRCHAY CHANNEL, established 2008:
I'm passionate about uploading quality and interesting videos for YOU, my audience.
What is my channel about? "Old lift machinery made interesting", old air-raid sirens, prehistoric alarm equipment. If "I" don't find it interesting ...then IT DOESN'T GET UPLOADED!
I always spend a lot of time editing my videos with animations, video in-sync with music and voice overs to make them this way.
My moto - "Quality NOT Quantity" - spending a month editing a video is not a rarity!
But without you, I'm nothing here. Thank you so much for watching.
...mrmattandmrchay is me (Matt) and my son Chay.
THANK YOU very much for watching :)

Опубликовано:

3 окт 2011

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 460

@joeybarrelwilde Год назад

A lot of people don't realize that IBM made elevator relays back in the day, not just office secretarial equipment.

@edbo10 8 лет назад

I got reaaaaallly lucky. Started a traineeship as an IT tech support, after some time we moved to a new office, first day at the new office and guess what? The bloody lift motor room door was unlocked...interesting as fuck, to say the least. Turns out there were some guys working on the lifts that day, hence the door being unlocked. Even better was that the door to access the highest floor's restricted area where they kept the airconditioning units, boiler room and all the other things an office building needed was unlocked as well! Only this time, they *never* bothered to lock it! The cherry on top of the cake is that there's a ladder leading up to the roof of the building, sometimes I just go on the roof during my lunch break to eat my lunch there. It's quite an amazing view of the city and the ocean, not to mention you can actually see the mountains waaaayyy off in the distance when days are clear. It's loud as hell in that room due to the aircon units but it just adds to the little adrenaline rush from doing something you're not supposed to do haha One time I was on the roof a guy and a lady in the next building saw me, they must've been on a tea break or something...not surprisingly, they were wondering wtf I was doing up there, I just waved at them and they waved back lol

@mrmattandmrchay 8 лет назад

+edbo10 Wow, these are the times that you need a camera lol. I went into loads of motor rooms in the 90s and 2000s, but mobile phones that recorded "GOOD" video were only around from about 2008 onwards, so all of my old videos were either low quality or just photos (then I formatted the wrong HDD in error and lost most of these photos :( :(

@hopesworldd7678 5 лет назад

:) :) :) :)

@WELLINGTON20 4 года назад

edbo10 swearing makes you seem pathetic because you don’t have enough legitimate info

@edbo10 4 года назад

@@WELLINGTON20 imagine caring so much about swearing that you have to project lol

@MmeHyraelle 3 года назад

@@WELLINGTON20 your taboo are irrelevant.

@MilesCallisto 7 лет назад

This is actually really great quality for a pre-2010 cell phone.

@LBSiUK 4 года назад

Exceptional quality for 2011. 1080p!!

@donaldfuck 3 года назад

@@LBSiUK nah, 2011 was not 2001

@dfirth224 4 года назад

Back in the 1970s I worked in two old buildings that were being used as warehouses for a department store. Both buildings were built in 1920s and had the original wooden freight elevators / lifts. To operate we pulled the wooden cage door down and pulled a rope either up or down to turn on the lift. The rope had metal devices clamped to it that pulled the rope automatically to stop at the floor. The shaft had plaster walls and a workman had marked his initials in the wet plaster and the year 1924.

@passacaglia28 8 лет назад

I can't seem to find words for how amazing this video is!

@mrmattandmrchay 8 лет назад

+David Irwin (passacaglia28) wow thanks very much. I did this one ages ago now, check out some of my new ones :)

@akaCol1987 12 лет назад

Watching this video for no reason whatsoever except out of pure curiosity. Simple but fascinating for somebody who just likes to know how things work. Thanks for sharing!

@comc9103 Год назад

Same

@bobkeahey6339 10 лет назад

That is one old elevator, a two speed AC with what looks like a new controller. It stops on the brake it appears, which it should not do. Also the gears you were talking about are the worm gear and ring gear, but do exactly what you said. There also appear to be a few overlays, but it is hard to tell from the video exactly what has been modernized.

@mrmattandmrchay 10 лет назад

Thanks for your info Bob :)

@Derpsterrr 9 лет назад

The reason there is a heater in the motor room is because it can get quite cold there in the winter, and at the end of the year is usually the time people do maintance on lifts. (Dont ask me why)

@MihalisNavara 9 лет назад

Derpster Games Do these motors have space heaters?

@shadoa8154 4 года назад

Agreed, maintenance personnel's comfort ranks first. Before a project is finalized, it's the last box checked before commissioning and sign off. Not once has a maintenance worker been left without the comfort of warmth before identifying, troubleshooting and ultimately fixing an upset condition. A room full of high fives for a job well done by those who are barely involved isn't complete unless the maintenance worker was warm and comfortable.

@s0675938 4 года назад

you're talking rubbish. it's to prevent condensation in/around the electic panel

@FrozenHaxor 3 года назад

Aren't these the load dumps for braking the motors? Pretty sure that's what they are.

@mikewinnett4988 3 года назад

The heater in the motor room is to keep the hydraulic oil from changing state when it gets too cold, this can give you levelling issues when the lift gets to the desired floor

@Corvid 7 лет назад

I do this stuff too, me and the Mrs were on the public observation deck of a very large TV tower, and they had left the fire exit open in a construction area, so up we went! Nothing like sitting on top of the world being screeched at by annoyed birds of prey who fly up there to feast on rodents! Very confusing to see mouse and rat skeletons that high off the ground, but the birds soon made it clear.

@davida1hiwaaynet 10 лет назад

Very cool! Those motors do have a nice startup and deceleration sound. I find it odd that they just leave the panels open and swinging in the breeze. In my industry that's not a good idea. Usually the panel staying closed helps to keep the relays and components clean.

@bobkeahey6339 10 лет назад

Just a note: that last set of prints were the selector prints, which may well be that overlay that had the floor positions. The STD and STU are step up and step down switches, and the slowdowns and floor positions are pretty obvious. Pretty decent prints compared to some.

@AnishKinnit 2 года назад

You know this video has aged 10 years and still one of the greatest mrmattandmrchay video, I've been watching this exact video the next year it was released and I absolutely love the fact how mrmattandmrchay's videos have the same kind of quality but with a higher detail and higher resolution video in 2021. Thank you for keeping your quality steady for the past 10 years and looking forward to see more content with the same quality in the future.

@TarzanAndConz 13 лет назад

The little unit next to the PLC at 4:26 is a comms module that connects PLCs of the FX series to each other via RS485. Via a protocol called 'Melsec' you can then share part of the data registers between PLCs. That prevents two lifts going to the same floor on a landing call.

@What_The_Fuck_Did_I_Just_Watch 3 года назад

We've got some epic old machines in grotty shafts! Love it!

@michaelscott9747 10 лет назад

Fantastic video and very helpful as I went in the lifts today at York Racecourse and I knew what was helping to bring the lift up and down in the lift shaft as a result of watching your video while I was in the passenger car going between floors. Well done.

@mrmattandmrchay 10 лет назад

Many thanks Michael - glad you liked watching it! These lifts have now been modernised, so good I filmed them when I did. I find older lifts much more interesting.

@elevatorsfromfrance_official 6 лет назад

WOW! this video reminds me of memories. It's been 3 years since I did not see it again ! I was 7 when I saw this video !

@mrmattandmrchay 6 лет назад

Ive been on youtube for nearly 10 years I think now. Amazing to hear people that were kids still watching:)

@pakbungphal.5446 4 года назад

I’m 10

@Darkmotive 11 лет назад

As usual very comprehensive & Great Detail !

@mrmattandmrchay 13 лет назад

@TarzanAndConz Hiya. Yes, I didn't expect to find a PLC in this installation, although it was only fitted in 1995. This building dates back to the early 80s. Finding an unlocked one, it 'about' 1 in 20 maybe? I don't check every one of them as it depends who i'm with (if anyone). This was was up an iron ladder and must be difficult to fasten while balancing on that ladder and the eng got lazy? That's fine with me! LOL

@wakkowarner7391 11 дней назад

I've fixed quite a few of those PLC's. Nice to see one installed and working.

@aidenwallis7958 7 лет назад

I'm glad I watch his videos as it helps further my knowledge of the lift industry as currently I'm a lift engineers work mate and I'm currently working on modernising two lifts at the moment

@mrmattandmrchay 7 лет назад

+Aiden Wallis thanks for your comment. I know a lot about lifts but im no expert... just an enthusiast since I was a kid. I know a lot about the relay generation and understand the principles but im in no way claiming to be an expert :)

@aidenwallis7958 7 лет назад

mrmattandmrchay I'm no way claiming to be an expert either as I'm new to the whole world of lifts and how they work also the different types of lifts etc

@MichalM 6 лет назад

Typical of the official Tesco repair! Very informative video. Keep on filming Mr Matt!

@mrmattandmrchay 6 лет назад

hey thanks for the comment!

@dkannegi 8 лет назад

Leaving a Lift room unlocked generally is a code violation depending on the local.

@SteveHolsten 7 лет назад

Thanks for showing the shaft. Nobody else does that.

@NACAFireAndSecurity 5 лет назад

This video started me off watching this channel!

@rjsmth 10 лет назад

Awesome upload of elevator room. Thanks for sharing....

@perecmanfirmnyc 11 лет назад

You're correct in that it really isn't a good idea for anyone to leave the lift room door unlocked. Although your interest is in learning, there might have been someone else who might have had something more nefarious in mind.

@ElkundEklund 11 лет назад

Nice video! The handles can be hard to turn by hand merely. Sometimes they come with a forked lever that goes on the handle. You turn it a quarter of a revolution, get a new grip, turn again etc. I did that once on a ca 1936 machine to raise the cabin a floor in an old building (museum to be).

@toddhunter3137 3 года назад

Nice video, thanks for sharing. I don't know if it's just me but I always get a nice tingle over the head when I'm fascinated to watch something but have no real understanding of it.

@LBSiUK 5 лет назад

Hear that awesome sound!

@jalali42 9 лет назад

Many Many Thanks for share tjis video on youtube.

@Oppossum 8 лет назад

I'm loving your videos, really enjoying them.

@Potew 12 лет назад

Thanks for this vid and the quality. I love elevators too. By the way, I guess 3 persons were responsible for locking that motor room door!

@fabiuh991 11 лет назад

fascinating, i remember going to the elevator room on my building when i was little and daaamn i loved going there =P

@craigthepony6259 6 лет назад

Who esle was getting that weird feeling in their stomach when he was looking down the shaft?

@ttbdrummer Год назад

Your mum is the same

@ac83052 11 лет назад

Thank you very much for the help.

@leethomas84 13 лет назад

I think I know where these are, awesome to finally see inside this machine room. The last few times I been where i think this is, the RH lift has had it's grills pulled across the door. I though tthey could be modernising it, but maybe it was just out of order.

@ajs2120 6 лет назад

I think for me there is only one criteria and that's noisy motors. That is why this and the Italy one are my favourite vids, as the motors are noisy! The additional item in this video is the old fan heater! Had not seen one for years until seeing this video.

@ajs2120 6 лет назад

The intro to this cracks me up. The song sounds very retro and the various brief shots of everything is quite funny.

@necklage 9 лет назад

Nice video!

@jc95elevators 9 лет назад

Thank You for you share this video

@weltvonoben 11 лет назад

thats very intresting ! thx 4 Uplodad :)

@nfsking2000 8 лет назад

This is so awesome.

@mrmattandmrchay 8 лет назад

+nfsking2000 thanks. I do get a mixture of comments on this video. Mot sure exactly why this one has been so successful. My other ones I think are better :)

@TheJakeman789 11 лет назад

I have love to watch the motors in action

@uniproplayz7938 3 года назад

It gave me goosebumps man

@Nuker-jc6qo 10 лет назад

Love your vids :D

@efraimbarkbit4168 12 лет назад

Verry cool video ! I'm also a big elevator fan since childhood. /Niclas, Sweden.

@gregorykemi8898 6 лет назад

Mostly I lock my lift motor rooms but on christmas day I leave 5 of them open and on new years eve I do the same for the other 5 rooms.

@TarzanAndConz 13 лет назад

Great one, as always! Nice to see the Mitsubishi PLC being used there as that's the brand i use a lot in projects. I have the successor for the PLC in the video somewhere in a box waiting for a project to use it in. You are very sucessful in finding unlocked motor rooms, but how many locked ones does it take on average before you find an unlocked one?

@kickinbackinOC 12 лет назад

Thanks for the video. I'm an elevator contractor. When I see obsolete, grungy equipment like this, all I can think of is the liability we incurr, being the service provider. I would rather see all the old stuff get sacked, and get modernized with state-of-the-art equipment. But yes, I do like the old OTIS machines and controls. They were an art unto themselves. But best put in a museum now!

@Organgrinder1010 10 лет назад

Love the sounds! Now if you could only upload the scent of all that action!

@mrmattandmrchay 13 лет назад

@TarzanAndConz Yes, I remember that unit being a PSU and 485 expansion module. I don't believe these lifts were ever linked together, or if they are then it's a very simply interface. Both lifts tend to respond to all both calls. I suppose the PLCs were used when dedicated lift controller PCBs (designed especially for lift control) were not around. The manufactures just upload a configuration, probably designed by themselves. No-one probably gave much attention to detail.

@brandonharjanto8430 6 лет назад

good job

@mrmattandmrchay 12 лет назад

If I won the lottery, I'd spend my time creating a lift museum. I'd offer money to refurbish old lifts in buildings so that I could keep all the old systems to erect them at my museum. Not sure that I would have many visitors but it would be fun and keep me busy!

@kingmcbrian 9 лет назад

i love that motor revving alien spaceship kinda sound :D

@mrmattandmrchay 9 лет назад

kingmcbrian I remember this noise from when I was a kid - finally got the chance to explore it, but it's no more... ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-N0MgGl2Jh94.html

@ag6371 6 лет назад

Input 3 is the floor change impulse, and inputs 6 and 7 are leveling up and down. All of these inputs are from the tape reader.

@KIRBZVIDS 4 года назад

Very cool motor room the resistors cabnet looked very tired

@mrmattandmrchay 12 лет назад

Cool thanks. By the way, I have another video that I'll be uploading soon that you'll find facinating (be ready in about 2 weeks as loads to edit!)

@feli0999 6 лет назад

Avesome motor room of butafole lift,nice! ;-D

@SamSitar 13 лет назад

@harrihealey02 very fun start up sound. long way down to the point of light. hoist way lights are very bright.. some elevators have front and rear doors. what does that add to the controller?

@Bombiedude. 4 месяца назад

Still really neat elevators/lifts though even though they appeared to be slightly modernized the controller does look in really good shape

@Bombiedude. 4 месяца назад

no wonder people say older ones are actually better than newer ones they were built really well back then even though in my opinion I do also like modern ones too even though they're certainly not as good as back in the day

@mrmattandmrchay 10 лет назад

Daniel Nuker Many thanks Daniel :) I like making them too, and what is extra special is getting great comments like this. Thanks once again.

@Nuker-jc6qo 10 лет назад

:D tnx i reely love your vids

@thedogememesproductions6354 8 лет назад

415v is very lethal and dangerous

@urban_fox_cub_urbex 8 лет назад

+Elvis Ramos Paahhh depends how u use it or what u do with it. I work on 415 all time and have hardly ever got shocks etc even when i work on it live

@thedogememesproductions6354 8 лет назад

+Red Rhino Film & Photography i work on 120v in my state

@LolGamer-jl4ld 7 лет назад

mrmattandmrchay kk

@Astrophysix1 7 лет назад

The "Whooop" Sound Is The Good Part.

@mrmattandmrchay 7 лет назад

+Richard Black these lifts and motors are still there but they've been modernised a few years ago. The whoop no longer exists as the star-delta motor configuration (which helps make the whoop) has been replaced to a variable frequency drive. Its just not the same :(

@Astrophysix1 7 лет назад

Ok?

@MichalM 5 лет назад

@@mrmattandmrchay I thought that you said that they had gone?

@hopesworldd7678 5 лет назад

:) :) :) :) :) :)

@mrmattandmrchay 11 лет назад

Coll, thanks! I've another one coming soon that explains how the Otis carriage selector works using animations and stuff

@mrmattandmrchay 12 лет назад

@Oli92Technik Good question, and I don't think there is one in the motor room?? There MUST be one, but I've got to admit I haven't a clue where it is! The only unidentified object is the black box on the floor at 5:30 on the left. Both lifts have one, but certainly doesn't look like a govenor.

@vacuumboy6.0 10 лет назад

PERFECT FOR THE PEOPLE WHO LOVE 3 PHASE STARTUP SOUND :D

@mrmattandmrchay 11 лет назад

Cool, got ya! Thanks for explaining and I will change the annotations :)

@ironman7036 11 лет назад

The P.L.C.or Programmable Logic Controller basiclly is all preprogramed you plug in your computor and then work out the speeds and slow downs on to the PLC from the magnets on the tape in the shaft,just giving you basics , you dont learn these things over night . Also that part on controller that you were not sure of I believe is the Reverse Phase Relay plug in your computer

@mrmattandmrchay 12 лет назад

thanks Harri, I've just had to revisit it also! 6'500 views now - cool!

@AlaminHossain-dz9vi Год назад

Thank you sir for this video.I'm from Bangladesh of Sigma Korea Lift at Khan brothers Equ- Build Ltd.❤️

@henriquecorrea1562 7 лет назад

Amazing! I wish my job's elevator room weren't closed XD I would pass some hours admirating

@julianpiper240 7 лет назад

you should ask! If you don't you will never know...

@henriquecorrea1562 7 лет назад

Julian Curmi - Ask them to enter there? they won't do this unless I become a Manager XD And even then, they would think I'm crazy for asking it =[ "hey, can I take a look at the elevator room?" "why?!" "just curious." "hahha what? why would I do this? pff"

@mrmattandmrchay 11 лет назад

Manual Crank - AKA hand winding... If you see 1:05 to 1:12,the handles (yellow wheel) are loose on the floor - this simply pushes on to the end of the motor (square fitting). Then you switch off controller, release brake (which is shown at 1:40-the spring thing-using release handle which I cant see here) then you turn the wheel which is manually turning the motor, by hand.

@TarzanAndConz 13 лет назад

Any photos of the PCBs or schematics you can post on Flickr?

@mvtver 6 лет назад

What is purpose of big hot resistors? As I can see on diagram, they connected serial with high and low speed windings both, and after start they are bypassed. Am I right? Very strange realization of a soft-start. Maybe, there are problems with electricity in this building?

@yakacm 8 лет назад

Unbelievably Horace Green and Co are still not only in business but still at that address.

@mrmattandmrchay 8 лет назад

+diecast jam Wow, I didn't know that. Then they have been going for many many years!

@yakacm 8 лет назад

The reason I did a search on them was because obviously I thought they would be long gone too, along with the rest of our heavy industry. But no it appears they are still there and doing well if they figures I saw were in any way up to date, interestingly they don't have a website though, all the info I saw was from references to them from other business directory type websites. Great videos BTW, not something I had thought about much, in fact I can't even remember why I watched one, but you have me looking at lifts now. We have a Doppler installed by Clyde Valley Lift in work, just ridden in it up to my office 20 mins ago. The lady who announces the floors has a very strange accent which sounds like a cross between Lancashire and ever so slightly European, which is explained by the fact that Doppler are Greek. It was only installed about a year ago, you would have loved the old one, it was ancient and was only ever installed as a goods lift, but as more ppl started using the back door to get into work it got hammered and kept trapping ppl and braking down.

@RediffusionMusic 5 лет назад

Unfortunately man, I think you have some old information. Horace Green and Co apparently went under about the same time as Bull Motors did. If you check street view, "Station Works, Cononley Ln, Keighley" - you'll see the Horace Green and Co sign, with a big "to let" banner over it. Unfortunately the chinese market and the influx of the MRL lift have left these companies to rot... and these "Trislot" motors are fantastic, Absolutely fantastic - at least Stannah had the sense to keep these motors installed, even although giving it a VF mod, eliminating any noise.

@RediffusionMusic 5 лет назад

Check this... yeah, unfortunately they're long gone. :( www.rightmove.co.uk/developer/branch/Candelisa-Ltd/The-Motor-Works-188108.html

@marionboatwright6312 11 лет назад

matt how did you stick your hand down to the sharft? oh & when the lift goes down what is that things what goes up at the back of the lift?

@38911bytefree 8 лет назад

PLC controlled ... I like it.

@mrmattandmrchay 8 лет назад

+38911bytefree I remember this place being built when I was a kid. It must have been late 70s. I bet it wasn't a PLC back then. The PLC was probably added in the 80s.

@38911bytefree 8 лет назад

mrmattandmrchay Yes, 70s was too early for PLCs. They are no that charming, compared to relay cabinet. But, I still prefeer a PLC over a "custom" rack full of boards. PLC are known solid. By the way, here, most 60 to 80 buildings have still relay cabinets for control and the fact that one or more floor remain latched is sort of a luxury. The average ones, just starts when you push the button and then ignore any other button till it stops, almost no logic. Even the modernized ones, just car cosmetics, and fit digital indicators, but machinery remains untouch. Of course, large building and comercial ones have their lifts are up to date. But not the residential buildings. I believe that is too expensive. As per the manufacturers, only the big building get well known brands. The residential ones are unknown brands, many of them have closed long ago. I dont think they built their machinery, they bought it from Siemens of something like that (as I was told from a lift technician).

@qazmatron 8 лет назад

Worm-gear drive makes simple safety. If a worm drive is less than 50% efficient driving uphill, then it is less than 0% efficient driving downhill, meaning that power is required to move in either direction. If the motor stops, the elevator cannot move. No dependence on separate brakes that can fail. Such an elevator CAN NEVER run away due to failed brakes, like a lot of the elevator fails you can find here. (Note: I don't know the efficiencies of actual elevator gearboxes. They might be able to be backdriven; they might not. Just that 50% is the threshold that decides whether it is possible.) (Any elevator CAN run away if it is rewired, unless there are interlocks to mechanically block vertical motion when the door is open. (I don't know whether anyone does that.))

@mrmattandmrchay 8 лет назад

+quaztron Interesting! Although I am informed that old Schindler lifts can run away (through the gearbox) due to the gearbox ratio and positioning of the worm drive, which is also interesting :) But, with a gearbox it's impossible for the lift to reach too high speed unless the wormdrive failed completely (it's like putting car in first gear then letting it run down a hill - the gearbox will create resistance)

@qazmatron 8 лет назад

•Drive < 50% efficient means the gearbox cannot be back-driven. That is safer, but it costs a bigger motor and uses more energy, which only heats up the worm drive. The elevator drive only accepts mechanical power, and never delivers mechanical power. •Drive > 50% efficient means the gearbox CAN be back-driven. Efficiency means a smaller (cheaper) motor. But the drive always delivers some torque to the motor, ultimately requiring a brake. On half of trips, the drive returns mechanical energy to the motor, which must be gotten rid of, either by driving the motor to oppose the load, or by using the motor as a generator, which yield electrical energy, which must be gotten rid of, either by heating up resistors or pushing it into the mains (regeneration). •Examples: •If the gearbox is 60% efficient when driving, storing 1 unit of potential energy costs 1.667 units of work, and absorbing 1 unit of potential energy RETURNS 0.333 units of work. •If the gearbox is 40% efficient when driving, storing 1 unit of potential energy costs 2.500 units of work, and absorbing 1 unit of potential energy COSTS ANOTHER 0.500 units of work. •Earlier I made up "uphill" and "downhill" because I don't know elevator terminology or parameters: •In the few videos I have seen, runaway elevators fall UP, which tells me that the counterweight is heavier than the car plus one passenger. So it doesn't seem right to refer to "lifting" a small payload, because the elevator is actually letting it rise or "fall up"; the work is being done by the heavier counterweight falling. Likewise the elevator doesn't "let" a small payload fall down; it has to push the car down, because it is also lifting the heavier counterweight. •The counterweight must, at a minimum, cancel out the weight of the car. However, energy costs are minimized if the counterweight cancels out the weight of the car PLUS the most typical payload. Beyond that, the elevator's maximum load is maximized (with the same motor and gearbox) if the counterweight cancels out the weight of the car PLUS the half the maximum load (but that makes the empty car and light payloads cost the maximum energy per trip). I don't know what balance point they choose for actual elevators.

@BHFR55 11 лет назад

P.S. I love the whooping motor sound and the beep from the top of the car sounded like the doors could yous some oil though LOL ;)

@Oli92Technik 12 лет назад

yes thats it, thanks so much!

@samhulbert1750 8 лет назад

If your so interested in lifts why don't you contact lesters and ask to see their panels being built. They still make relay panels for the replacement market.

@mrmattandmrchay 8 лет назад

+Sam Hulbert Thanks for the message, but I'm really only into the really old lifts, from before LEDs were popular, so this would be from early 80s and before that.

@mrmattandmrchay 13 лет назад

@TarzanAndConz I will definately be doing this within the next couple of days.

@cyotee4081 11 лет назад

WOW! great video, but how did u get ur video cam down that tiny hole in the motor room to show the lift shaft ?

@Cinncinnatus 8 лет назад

heaters are to make sure it doesnt get too cold for the transmission and motor lubricants. (they not in use 24/7 non stop so gelling of lubricants can be a serious issue)

@BertoldBR74Roux 10 лет назад

Also very fascinated in lifts since I was young :)

@mrmattandmrchay 10 лет назад

...how about now? For me, this interest has stayed with me since I was about 8 years old.

@BertoldBR74Roux 10 лет назад

Now the interest still lives

@abc-ge5ln 10 лет назад

mrmattandmrchay mrmattandmrchay....Sounds like you know your stuff....I addressed you in another thread in which the elevator crashes up, but wasn't sure if I addressed it to you directly, since the "reply" button wasn't there, so my apologies for a possible double question...Has there ever been a recorded case of elevator crashing into the top of the shaft with such force, that it broke off the car cable attachements and crashed back down to the basement? Also one would think, if that were to happen the ceiling at the top of the shaft could be damaged from such hard impact, to the point of structural failure...If that were the case, could the elevator machinery actually fall through the ceiling and crash on top of the elevator down below at the bottom of the shaft?

@bobkeahey6339 10 лет назад

abc123 No, the only cases of an elevator falling is when the whole roof, such as 911, caves in. In that case, all the cables, including the governor cables were cut, so the car and counter weights went into the pits, which is why the doors on the sky lobby on the 21 or 22 floors blew out. Cars can go up into the overhead, but the crosshead and machine beams are the strongest part of the whole installation, so no damage is done. We did have one case where the car went into the overhead (the counterweights are generally 40 to 45 percent heavier than an empty car) and it hit hard enough to set the safeties with the crosshead pinned against the machine beams. We had to crawl out and chisel the safeties free to get it to come down.

@sbs9830m_video_productions 10 лет назад

I'm in 3rd grade now and interested since I was in Preschool! :D

@mrmattandmrchay 13 лет назад

@agoodm Yes! I've put an annotation on that now. I used to see these everywhere in the 80s and early 90s. Wonder what would happen if I turned this one on? Probably burst into flames as probably hasn't been switched on for many years. I too wonder why a "heater" is here? This is not exactly an office!

@Sharkie626 7 лет назад

Almost 6 years later and I STILL watch this video! So, lifts huh? You from England? :D

@mrmattandmrchay 11 лет назад

(2>>> continued) 240v in a motor room is probably used by the controller, possible door motor. But if you want the run a big motor like the one the makes the lift move, 240v is not enough. This requires THREE PHASES to make the 415v. There are bigger relays that switch this power to the motor in the cabinet. If you touch 240v you'd get a stock but probably survive(you wouldnt do it again though lol!) If you touch one of the 415v phases you probably wouldn't live. Hope this helps?

@ElkundEklund 11 лет назад

Someone in Sweden already did that... A lot of pre-1940s control equipment salvaged... Virtual museum coming up at some point in the future.

@OctoSwift 12 лет назад

What's the song on the beginning of the video?

@mrmattandmrchay 10 лет назад

Hi! Yeah, but it's really different voltage configurations being switched into the motor. There are two sounds on start up - whooo, whaaaarrr (lol). The first noise is probably the "STAR" config, then the second is the "DELTA" config - each being switched to the motor. The first sound(star) is used to get the motor running - high torque, but low speed. The second sound (delta) is low torque, but high speed. Do a search for "star delta motor configuration" on google - it's interesting stuff :)

@ryan_niemi 11 лет назад

@2:30, I think the description is incorrect. I'm pretty sure these are dynamic braking resistors, which convert the kinetic energy from stopping the lift into heat. When the lift is descending and needs to be brought to a stop, the downward kinetic energy of the car has to be dissipated. As the motor decelerates and is driven by the car, back-EMF from the motor produces excess voltage in the drive electronics which is then dumped in the dynamic brake resistors to convert the energy to heat.

@ALANSWEETIES99 8 лет назад

Pretty amazing elevator motoring room!

@mrmattandmrchay 8 лет назад

+Alan Deutscher It's cool! Did you see my "BEST VIDEOS" playlist? Plenty more on there if you have time to check them out. They are listed in order of "my most favourite ones" at the top. ru-vid.com/group/PLaq77KzM3KRQ1Ys7WrWy_5h2CG3nE0ziz

@ellenloresto2584 7 лет назад

:o WOW I WISH IMCAN TUCH ALL THE STUFF IN THERE(:

@agoodm 13 лет назад

Why is there a fan heater in the motor room? I will always remember those space age looking heaters from my first experiences of school

@ImanRyanx 4 года назад

THE LIFT IS SO DANGEROUS

@Lift.Tracker 4 года назад

Scary Hacker Why?

@ShizzleFoGizzle 10 лет назад

the thing at the back of the lift is the counterweight, it is usually weighs the same as the lift car half loaded. As for putting his hand down the shaft, well that hole is for all the wiring to come back from the landing buttons and indicators to the main control panel. I am a lift engineer...there are things i know! lol

@mrmattandmrchay 10 лет назад

ah you mean like @9:56? This is the door edge photo-electric beams. If the doors have an object between them then it prevents the doors closing, or reopens them. You can see it clearly at 12:30 - on top is a 7-segment LED. It lights up all digits when any beam interrupted and goes back into a "chasing circle" display sequence afterwards.

@mrmattandmrchay 11 лет назад

"just" enough room although I was being very careful not to scratch it on the concrete, so that's how tight it was.

@jaymietreadwell 13 лет назад

2:03 - Keighley 2:20 - Looks like it's been maintained by several different companies - Otis, Stannah, Jackson The PLCs are from Mitsubishi, and I would say either Stannah or Otis installed them - the smaller one looks like it's for part of a safety circuit I'm guessing these travel at around 0.5 metres/second I do like the motor sound though. Nice video :)

@marionboatwright6312 11 лет назад

what does the CW do? (counterwieht)