Thread Number: 72030
/ Tag: Modern Dishwashers
What type of motor do these use? |
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Post# 952660   8/12/2017 at 12:37 (2,448 days old) by chetlaham (United States)   |   | |
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Do these use an induction, synchronous, inverter or DC motor? I can't figure it out, but I am going to be honest with everyone here. After the "cake" thread I am starting to get this urge to play with one of these:
www.homedepot.com/p/Whirlpool-24-... I figure now that the technology was had several years to mature and that many engineering changes and models latter have produced a bug free product. Here is the motor that the internet gives: www.repairclinic.com/Part... Also, does anyone know of the wash and rinse temperature on Heavy + High temp? |
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Post# 952662 , Reply# 1   8/12/2017 at 13:19 (2,448 days old) by henene4 (Heidenheim a.d. Brenz (Germany))   |   | |
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According to the manual, Heavy\High Temp uses almost 40l/10gal and only runs ~150min. That shoud be a single speed machine, so nothing fancy. So no DC or inverter I'd say. |
Post# 952664 , Reply# 2   8/12/2017 at 13:28 (2,448 days old) by chetlaham (United States)   |   | |
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Post# 952668 , Reply# 3   8/12/2017 at 14:52 (2,448 days old) by Rolls_rapide (.)   |   | |
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That is appears to be an alternating current magnetic pump. Basically a slightly bigger version of the typical magnetic drain pumps fitted to every make and model under the sun. |
Post# 952679 , Reply# 5   8/12/2017 at 17:10 (2,448 days old) by chetlaham (United States)   |   | |
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Post# 952680 , Reply# 6   8/12/2017 at 17:16 (2,448 days old) by cfz2882 (Belle Fourche,SD)   |   | |
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looks like a synchronous motor with bi-directional pump.I saw one synchronous dishwasher main pump,~1998 vintage,that had a circuit board built in to make the motor run the same direction every time-allowing a more efficient directional pump to be used. |
Post# 952682 , Reply# 7   8/12/2017 at 17:31 (2,448 days old) by gansky1 (Omaha, The Home of the TV Dinner!)   |   | |
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Post# 952683 , Reply# 8   8/12/2017 at 18:32 (2,448 days old) by cuffs054 (MONTICELLO, GA)   |   | |
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If I'm going to spend $150+ and go through having to pull the whole mess out, l'm just going to bite the bullet and replace the machine. |
Post# 952694 , Reply# 9   8/12/2017 at 22:57 (2,448 days old) by combo52 (50 Year Repair Tech Beltsville,Md)   |   | |
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Post# 952709 , Reply# 10   8/13/2017 at 06:46 (2,448 days old) by chetlaham (United States)   |   | |
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Post# 952710 , Reply# 11   8/13/2017 at 06:49 (2,448 days old) by chetlaham (United States)   |   | |
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Post# 952721 , Reply# 12   8/13/2017 at 09:11 (2,447 days old) by combo52 (50 Year Repair Tech Beltsville,Md)   |   | |
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WP has used more than a 1/2 dozen different main motors and another 1/2 dozen different drain pumps as well in their DWs in the last 17 years or so.
WP has generally built the best cleaning, best drying DWs over the last 50 years or more, and by far about the most easy to repair 99% of the time without having to remove the machine from its installed position.
Hi Chet, yes we have lots of motors lying around that fit these newer DWs, if you are ever interested you are very welcome to visit and go through them and even take some home. The motors WP is using seem to be quite reliable and we have little demand for them as used motors so a lot of them just go in the recycling bin unlike the crappy brush type motors that FD have used for the last decade + and now GE seems to be using these low durability in their newer DWs as well.
John L. |
Post# 952726 , Reply# 13   8/13/2017 at 10:19 (2,447 days old) by chetlaham (United States)   |   | |
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Thanks Combo, that means a lot to me :) You are very generous. I might order one or two just to take apart- will see.
I do agree with you about repair. It seems that the most easy to repair by far of any machine be it dryer, washer, DW or range is hands down WP. Their newer vertical modular washer is by far the easiest thing to fix- easier then small appliances and computers if you ask me. Light weight and few sharp edges to. If WP is using synchronous motors then I think we have a winner. A brush motor does not belong in a DW IMHO. And for the price a BOL whirlpool is giving you 3x more in all categories including longevity. Drying- this is a biggy for me. I do not use rinse agent, so I rely entirely on what the machine can do. I've had Whirlpool machines that dried very well with and those that needed towels at the end of the dry cycle. If I was to buy a Whirlpool made machine, which would you recommend from drying aspect? |
Post# 952763 , Reply# 14   8/13/2017 at 14:15 (2,447 days old) by henene4 (Heidenheim a.d. Brenz (Germany))   |   | |
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The best thing I found for drying is just popping it open after a cycle and to wait a few hours. Oh, and it has a heated dry, so that should help, right? |
Post# 952933 , Reply# 17   8/14/2017 at 20:34 (2,446 days old) by chetlaham (United States)   |   | |
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Post# 952940 , Reply# 18   8/14/2017 at 21:22 (2,446 days old) by combo52 (50 Year Repair Tech Beltsville,Md)   |   | |
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Post# 953022 , Reply# 22   8/15/2017 at 14:22 (2,445 days old) by chetlaham (United States)   |   | |
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All excellent and very educational replies! :)
Spot on about induction motors never being truly synchronous due to the slip and need for a spinning field to generate a counter field in the rotor. Immediately reminded me of this video: One advantage to Whirlpool's motors (at least the DW drain pumps) is that they appear to not have any type of rotor seal, ie the rotor is housed in water and the stator slips over the plastic housing. |
Post# 953687 , Reply# 23   8/20/2017 at 11:54 (2,440 days old) by chetlaham (United States)   |   | |
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Post# 953693 , Reply# 24   8/20/2017 at 12:40 (2,440 days old) by combo52 (50 Year Repair Tech Beltsville,Md)   |   | |
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Post# 953703 , Reply# 25   8/20/2017 at 13:33 (2,440 days old) by chetlaham (United States)   |   | |
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I know it might not seem worth it, but can you explain them at least? I am even more clueless as the guy lol. Especially the function of the circuit board.
I do agree about the DW though, that looked like a really good model, and at 1 year old he would have had a new DW possibly for pennies on the dollar. |
Post# 953708 , Reply# 26   8/20/2017 at 15:11 (2,440 days old) by Johnb300m (Chicago)   |   | |
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Post# 953783 , Reply# 28   8/21/2017 at 07:11 (2,440 days old) by combo52 (50 Year Repair Tech Beltsville,Md)   |   | |
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Hi Rex, yes indeed why go through all that trouble to build a blower, I hope he has a sprinkler system in that work shop, these DW pump motors are not continuous duty they will overheat and hopefully shut off, if not and a plastic motor lubricated with oil attached to a wooden fan assembly, well lets just say it would be a waste of time to apply for UL approval label, LOL.
It was a fun video to watch and it is fun to watch the creative spirit at work, but I don't think I would bother taking a video of a project like this and putting it on line. Now I will admit that when I was 12 or 13 I built a wooden refrigerator using the sealed refrigeration from a 50s Westinghouse ref, I think I realized after I got it all framed together that it was a silly idea and did not complete it.
As Rex mentioned there are so many good blowers that can be had for about nothing, I would take one out of a high end WP or maybe a Samsung Dryer that has a variable speed blower with a separate motor, these move a lot of air and are designed to work with flammable lint so they should be well suited for sawdust. |
Post# 953858 , Reply# 29   8/21/2017 at 13:30 (2,439 days old) by chetlaham (United States)   |   | |
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Post# 953880 , Reply# 30   8/21/2017 at 15:44 (2,439 days old) by henene4 (Heidenheim a.d. Brenz (Germany))   |   | |
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Probably current sensing for some form of load sensing. |
Post# 953904 , Reply# 31   8/21/2017 at 19:12 (2,439 days old) by combo52 (50 Year Repair Tech Beltsville,Md)   |   | |
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Post# 954012 , Reply# 33   8/22/2017 at 10:02 (2,438 days old) by johnb300m (Chicago)   |   | |
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Upon thinking about this more, and watching that video.......
I hope many on here go watch that video a 2nd time, maybe three times. I can't count how many times people were arguing in threads about when these little "puny pond pumps" were put in dishwashers, and everyone was crowing about cheap and weak they were. Did you see the video? That thing was running at full 3400-3600 rpm whether unloaded or very heavily loaded with a WOOD impeller pushing 6in dia. That's a ton of drag for a little 55w motor. And in some instances it was overdrawing to maintain speed. The torque on that thing must be pretty good. That's how you get your good water pressure from a dinky "pond pump." |