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Washing Machine Main Motor Infos Required

02/22/2012 7:39 AM

Hi,

I am looking for any information and tips that you may have about the main drive motors that have been used on any model from any manufacture. I need voltage & current requirements and how the motor needs to be driven.

How do I identify one motor type from another?

How do I identify the leads?

If you know of any specialist chips that would help me to achieve that, please give me that info as well.

I know that some of the later machines are direct drive with I believe a VFD system, but there are still many around that use belt drive.

Some have clutches, some don't, but all seem to manage the washing cycle and reversing at relatively slow speed and also the high speed spinning......

I have started a blog on Yahoo to collect all and any information that you may have for me, with the eventual aim of making the information available to anyone who joins the blog to allow the use of a PICAXE Chip, running its own version of BASIC to control a complete washing machine.

That way, if a machine has a defective controller, you might be able to get the machine running again as a spare (most cannot wait till you have the controller up and running unless they live near to a Laundromat or similar!) for any future problems.

People who need two or more machines will be happy if they can pick one up from the junkyard and get it running as well as learning about PICs!!! A great hobby for some!!!

By the way, I already have a lot of information on how to interface solenoid valves and small motors like pumps, which only need to be turned on and off.

I am also recommending that Opto Isolation to be built in as well for obvious safety reasons. Nowadays that is not so difficult as it was years ago......that can be some form of optocoupler or even properly sized relays.....

I would also make the information freely available on CR4 as well.

If anyone wants more info about the PICAXE which is:-

a) very cheap due to the fact that the UK Government subsidizes them heavily

b) are quite fast running at up to 40MHz, so that even BASIC is more than fast enough for running a washing machine.

Go here for PICAXE infos:-

http://www.rev-ed.co.uk/

Some chips have PWM outputs, ADC inputs as well as conventional Digital I/O.

Some have the hardware for driving I2C and the ones that don't can have it implemented in BASIC, so the reading of I2C RTCs, temperature sensors or even expanded memory for larger data/software requirement is not a problem at all.

If you want to join Yahoo Blogs and follow my blog, search for PICAXE and my blog is called "PICAXE_DIY_CONTROLLERS".

I personally find that CR4 and Yahoo blogs complement each other completely, both are important to me.

Thanks for any help and assistance.

PS. The infos here should allow other projects to be easily achieved, a washing dryer for example or anything really!!! Other ideas gratefully accepted.

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#1

Re: Washing Machine Main Motor Infos Required

02/22/2012 4:16 PM

You might be able to glean some info from the the following site: www.repairclinic.com. They sell OEM & aftermarket repair parts for all sorts of household appliances. It doesn't give a lot of technical specs for the parts, but for example I looked up washers -> motor -> Frigidaire (for example) and clicked on a motor for a model in the list. When I clicked to enlarge the photo of the replacement motor, you could read the voltage and current, and at least see how many wires went to the connecting plug:

http://www.repairclinic.com/PartDetail/Motor/134156400/958670

You'd have to spend some time exploring various categories and models, but you could at least get some info. You should explore the rest of the site too - there is a "Get Repair Help" tab that was too slow to open for me right now, but may have additional info. Other than that, you would need to get service manuals.

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#2

Re: Washing Machine Main Motor Infos Required

02/22/2012 11:04 PM

Yes , this IS a great Hobby!

Aside:

[It is also something I was very interested in as to how washing machines (top loaders) manage forward and backward oscillation/agitation during wash and rinse cycle given that they are cheap single direction single speed AC motors!

The trick was in the transmission. A service manual for washing machine showed vertical "orbital" gears and a yoke mounted off center in the vertical orbital gear which in effect ignored the up and down portion of the gear's motion and only transmitted the forward and backward component of rotating motion through the yoke spindle, forward and backward to the agitator!]

I have the manuals if you can be emailed? Don't know what specs they put on how to drive the motor though? there is a motor shcematic.

Can you post a link to your yahoo group?

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#3
In reply to #2

Re: Washing Machine Main Motor Infos Required

02/23/2012 4:28 AM

I will send you my email address via the CR4 email system.

You need to join Yahoo blogs, then look for "PICAXE_DIY_CONTROLLERS", I will post a link but it will only work properly if you are a member I believe. Try it:-

http://tech.dir.groups.yahoo.com/dir/Computers___Internet

Type in "picaxe" in the box and all blogs with the word PICAXE in the name will be shown. As I am already a member, it works slightly different for me maybe. But then look down the list for mine. You will need to join at some point, think up a good name and a password, its all free!!! Lots of great stuff for DIYers like us!

Thanks for your interest. Keep in touch for any queries that I may help with.....not that I am fully up to speed yet myself!!

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#4

Re: Washing Machine Main Motor Infos Required

02/23/2012 10:47 AM

Here's a sequence chart and schematic from a 30 year old Kenmore, manufactured by Whirlpool, I think. It had the belt drive, but the one I replaced it with last year (yep, bad timer!) is direct drive. 110v/60Hz/?A

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#7
In reply to #4

Re: Washing Machine Main Motor Infos Required

02/24/2012 5:22 AM

My 1987 model belt and gearbox driven Simpson (Oz) still "works". Needs a new solenoid valve is all...have the bits can't be bothered to fix it coz I was given a very nice modern PIC controlled machine by a mate about a year ago that is quieter and uses a lot less juice to run.

The new one is gravity draining which means it needs a floor drain to work. The old one pumped out which made it easier to salvage the waste water if required.

A hobby you reckon? A business in custom chipping (performance tuned washer) could be on the cards....where's the OBD2 port on my new washer??

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#5

Re: Washing Machine Main Motor Infos Required

02/23/2012 3:13 PM

This would be a great hobby but Andy I think you're "loosing it".

The Maytag repair man has to make a living too....

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#6
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Re: Washing Machine Main Motor Infos Required

02/23/2012 4:42 PM

I like challenges. If the Maytag man has a problem that's his and his alone.....

They get away with bad quality and short lives of white goods......I have had enough of that....

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#8

Re: Washing Machine Main Motor Infos Required

02/24/2012 5:35 AM

Andy, have you gone mad ? It's not even the weekend.

I have several chums in the DAPS game, but you'll have to give more info before I ask them.

How do I identify one motor type from another?

How do I identify the leads?

It's indecent to laugh this bad on Friday

Giving new life to stuff is great, but this will end up costing more than a new one. When you move this to the skip, tilt it toward the soap tray (circuit board is usually on the other side), so some 'crazy German' has half a chance of playing with it.

I'll check the link, but I have to stop laughing first. "Vorsprung durch Tecnik"

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#9
In reply to #8

Re: Washing Machine Main Motor Infos Required

02/24/2012 7:14 AM

Although it would be great to have an extra working washing machine at the end of the day (my present one is still working fine!), my main aim is to:-

1) Learn more about interfacing PICs to everyday objects, broken or not

2) I have seen washing machines "repaired" in this way several times by friends, one used a Nascom 2 in 1980, one used an old PC around 1985 and several have done it more recently with Atmegs and other controllers, but I have never seen it done with a PICAXE - yet!

A washing machine needs more "know-how" than any other machine generally found in homes I feel (I am fully prepared to be wrong on that point if you know better!), but I am also planning to make digital clocks, alarm clocks with atomic clock input and several other simpler things as well......

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#10
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Re: Washing Machine Main Motor Infos Required

02/24/2012 9:26 AM

It's a good question, Andy, and I think you know my pee-taking style. Not being 'aux-fais' with this I'll have to stack it for weekend perusal, but I'll certainly be be back for a read and any helpful input I can make.

Personally I'd reckon dishwashers to be worse (not Mrs K, the mechanical things with their damnable matrix etc) kitchen appliances, though I don't keep one and am biased - an abhorrent waste of energy etc IMHO (besides, what are kids for ?)

UK servicing companies don't in general repair on site. They just bin them. It's far cheaper to send out a new one, rather than have a fitter diagnose and repair. That, I know first hand from somebody in a major UK company. However, your question is valid, so I look forward to reading more over the weekend. Cost is not always the point, most engineers like to figure 'what is wrong, and how do I make it work'. Good question, Andy, but can we do atomic clocks next weekend ?

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#12
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Re: Washing Machine Main Motor Infos Required

02/24/2012 10:31 AM

LOL!!

You always were a droll type, nice to have you aboard!!

By the way, the atomic clock is easy, you just buy a small receiver circuit board for around 10 pounds and with a few lines of software and a PICAXE or similar, you can read the date and time from the receiver and display it on an LCD for example.

Here is a link for someone who did just that for himself:-

http://www.burningimage.net/clock/

The UK has the rugby clock and Germany has the DCF clock near Frankfurt.

The USA has similar units scattered around.

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#11
In reply to #8

Re: Washing Machine Main Motor Infos Required

02/24/2012 9:42 AM

HEY, cut the man some slack.

One can never have too many functioning washing machines. It seems like I am replacing the washer every time I use it to clean any auto parts. I wish I could get the grease rinsed out after a cleaning a set of control arms. And the smell stays forever after using carburetor cleaner in them. Does anyone make a basket that will not chip to death with cylinder heads in them?

I am all for the repairing of machines. How about using the exhaust from the cloths dryer to dry the dishes, or the dog(after a bath). Hell why not use the dryer exhaust to dry myself off after a shower? ...... The ideas seem endless.

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#13
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Re: Washing Machine Main Motor Infos Required

02/24/2012 10:33 AM

LOL!

Now there are some new ideas!!!

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#14
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Re: Washing Machine Main Motor Infos Required

02/24/2012 11:25 AM

Hey, he may reside in sausage-land, but I know he still has a sense of humour, and probably even eats tomato ketchup (and baked beans when he can get them)!

When my washing machines go bust, I keep the glass bowl things. Don't ask why, it's a fetish. If you have a goldfish pond, you can invert the things and 'goldy' can come up above water level for a peek. If this works, please tell me. The theory is good, but the look on my MIL's face won't be. SCORE !

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#15
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Re: Washing Machine Main Motor Infos Required

02/25/2012 9:48 AM

Don't use a washing machine for this. Use an old dishwasher, the temp is higher and they come out dry.

Andy, best on this, will you make house calls?

Had a dishwasher go in the restaurant, used the people in another post, they worked out well. Had no idea what happened, but the soft circuit board panel holding the soft switches developed a crack. As it was commercial, the manufacturer wouldn't even answer my e-mails. So, you might not get much service from homeowners, commercial types might be an alternative.

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#16
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Re: Washing Machine Main Motor Infos Required

02/26/2012 9:11 AM

LOL!!

I am actually just intending to learn a little bit more about PICAXEs and what you can do with them, house calls are not in.....except at the Bunny Girl mansion maybe.....

But I have to admit that over the (many) years that I have been around and two marriages, it has always galled me to have to buy a new dishwasher (or whatever), washing machine and the like when I knew that only one small expensive part was to blame.

But the cost of replacing that part in a machine already 5 or more years old, could not be balanced out when the part and the labour exceeded say 50% of the cost of a new machine.....

I have in fact repaired several machines myself when I was able to find the part at a reasonable price and I could not see a problem to access and replace the part.....but that was usually small water pumps or solenoids or similar.....controllers were always very highly priced....

I am sure I am not alone either in wanting to repair and update more, and give out less money as well as learning something at the same time....

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