Thread Number: 86466  /  Tag: Modern Automatic Washers
Asko experts??
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Post# 1110442   3/6/2021 at 19:58 (1,146 days old) by bajaespuma (Connecticut)        

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I'm confused by Asko washer brochures. There are pictures of washers with "1800 RPM SPIN" on the control panels but none of the models in the brochures seem to have more than 1400 rpm listed. What gives? If there is a model with 1800 rpm I'd like to know about it. This one has 1600 rpm on the panel but the brochure says 1400.


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Post# 1110454 , Reply# 1   3/6/2021 at 23:24 (1,146 days old) by foraloysius (Leeuwarden, Friesland, the Netherlands)        

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They used the wrong pictures I guess. According to the North American website Asko doesn't sell machines with 1600 or 1800rpm in North America. They do sell those overhere in the Netherlands. But those models are the compact ones. Except from the BOL one, all machines on the NA website are XL models. Those don't speed faster than 1400rpm.

Post# 1110461 , Reply# 2   3/7/2021 at 00:05 (1,146 days old) by Launderess (Quiet Please, There´s a Lady on Stage)        

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IIRC at some point European and some Asian washing machine manufacturers were engaged in an arms race for final spin speeds. Nearly all major players had at least one model washer with 1800 rpm final spin, my AEG Lavamat does for a start.

For reasons one is not entirely aware or sure of the trend didn't seem to last. Things soon quieted down to final spin speeds of 1600 or 1400 rpms max.

My AEG Lavamat when selected only does 1800 rpm for about final two to three minutes of final spin cycle.

Quite honestly for amount of noise and bother don't see that much of a difference between 1800 rpms and say 1400 rpms, so rarely bother. If want certain things spun nearly bone dry there's always the spin drier.


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Post# 1110475 , Reply# 3   3/7/2021 at 05:35 (1,145 days old) by henene4 (Heidenheim a.d. Brenz (Germany))        
Why they fayded away

1600rpm models got exceedingly rare over the couple last years.

My favourite comparison site has like over 200 1400rpm models and only about 40 1600rpm machines.



The return on investment is basically 0 above 1600rpm.

400rpm gives you about 100-110% residual moisture (so 8kg Cottons would hold 8kg of laundry).

800rpm goes to 70%.
1000rpm goes to 60%.
1200rpm goes to 55%.
1400rpm goes to 50%.
1600rpm goes to 44%.
1800rpm goes to 43%/42%.
2000rpm goes to 42%.



However forces go up dramatically to the point that many machines spinning above 1600rpm more often than not just didn't go to full speed.




A 1600rpm machine does makes sense when you tumble dry a lot (saves about 10% energy).
Otherwise, barely so.








On the XL machines by Asko, they limited the entire thing to 1400rpm probably due to construction limitations.

They took their base machine design and just stretched it longer.
Should be same width and height, just deeper.

But rated capacity has been upped by 25%.




To not have to reinforce tub, drum and chassis they will probably just have limited everything to 1400rpm.

Not sure if they changed bearings and shock absorbers though.


Post# 1110480 , Reply# 4   3/7/2021 at 06:06 (1,145 days old) by Launderess (Quiet Please, There´s a Lady on Stage)        

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Going from final spin speed of 800 to 1400 or even 1600 gives biggest bang for buck in terms of less residual moisture. But even then that would vary by type of textile (thick and thirsty bath towels/wash cloths, heavy cotton blankets, and other such things), and construction.

Anything above 1400 you're getting into such small percentages of moisture extracted that energy use in tumble drying isn't that greatly reduced. This compared to the stress and strain on washer I suppose.

Keep in mind washing machines have much larger drums than spin driers.Thus even though final spin speed might lower than the 2800 rpms of spinner, more water is extracted in a given time thanks to that larger drum.

Many front loaders use early portion of spin cycle to periodically to stop, fluffing up washing, then spin, stop...... This helps extract more water from items because process is more evenly done.

In a spin dryer things are mashed down and spun as loaded. This can create pockets or other areas where water doesn't extract evenly. You notice this when taking out washing somethings have nearly dry streaks, whilst others are moist or even wet.


Post# 1110485 , Reply# 5   3/7/2021 at 07:01 (1,145 days old) by henene4 (Heidenheim a.d. Brenz (Germany))        
Stress and strain

The 1600rpm thing is kind of a debate.



First of 1600rpm DOES save energy over 1400rpm.
Many people like to argue otherwise, but 5% residual moisture less is not insignificant.
It's the same ROI you get from 1000rpm on, so if you say going to 1400rpm is useful, going 1600rpm is just as much.

10% savings is a pretty good estimate for this, Miele's manuals go along with that.
And drying is pretty much a 1-1 relation from moisture to energy usage.

However you have to look at what you pay for a washer.
If it's not much extra it certainly is worth it.
For example, Beko over here marks up the 1600rpm models by like 20-30€ which is something you can argue for if you dry a lot.
AEG marks up 100€ for their base machines by now, making it less attractive.




And strain wise I've found that especially budget brands use better bearings in their 1600rpm machines over their 1400rpm machines.

A user posted a video of their Samsung machine operating open and their tub unit was labelled specifically as a 1600rpm version.

The AEG my grandma has does have a different tub unit part number compared to the 1400rpm models with the same drum design.


Post# 1110496 , Reply# 6   3/7/2021 at 09:40 (1,145 days old) by Miele_user (Fredericia, Denmark)        
Launderess

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Funny the last video in your post of the “ASKO W6903 Quattro 2000 RPM” is actually my video. I dont’t have that washer anymore as I sold it to someone last year. I had three W6903 2000rpm machines and all of them would only spin at 2000 rpm if the load was 99,9 balanced or with empty drum, if not it wil only reach 1600 rpm max. So under normal conditions the 2000rpm speed was never reached

Post# 1110561 , Reply# 7   3/8/2021 at 04:43 (1,145 days old) by Adam-aussie-vac (Canberra ACT)        
Oh my god,

That remind me of the Fisher and paykel 1000 RPM spin, but that was only measured with an empty tub


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