Wash Times

[paulinroyton]

I am confused with wash times on my Miele Homecare 1730.

On the cotton cycle programmes with a 60c wash takes 1hr.49mins, 2hr.07 mins if set below 800rpm.

The 40c cotton cycle takes 2hr.04mins, and 2hr.21mins below 800rpm.

I would of thought that the 40c cotton wash would be quicker.

Paul

 

[l86810]

Hi Paul

The 40oC wash is longer to give comparable results to the 60oC cycle.
Both are designed to clean through 'normal' soiling.

You can use the 'Short' option for lightly soiled loads.

As for the increase in cycle times when reducing the spin speed below 800rpm, its because the machine adds an extra rinse, to give the same rinsing results.

 

[samsungfl]

Cooler Cycles, Longer Cycle Times

Hiya.

The newer Miele's add in an additional rinse when a lower temperature wash is selected, they've done this for quite some time now I think.

The reasoning behind this is that you've used more detergent to compensate the lower wash temperature. Not sure if yours is the same, but mine only adds the extra rinse to the cooler washes if theres a bigger load detected

Hope this helps.

Rich.

 

[paulinroyton]

Wash Times

Hi guys.

Thanks for advice. I was given this machine and have no instructions for it.

I have noticed when a slow spin is selected an extra rinse is added. I manage to sort out the homecare programmes, think there are about 4-5 extra programmes when using homecare.

Cheers guys

Paul

 

[logixx]

As far as I know, the extra rinse it automatically adds to cycles below 60C is because of the Sensor Rinse process. It has nothing to do with extra detergent on cooler washes.

Sensor Rinse measures the temp increase during the first rinse after the main wash. Once the temp stops rising, all the hot suds remaining in the load have been diluted by the cold rinse water and the rinse ends. For washes below 60C, the temperature differential is not big enough for the washer to detect - so it automatically does three rinses.

 

[washboy2005]

Richard is correct, Miele actually introduced the extra rinse on cooler washes because they had the theory that if a lower temperature was selected, more detergent would have to be used to obtain a similar result to that of a higher temp cycle.

Nowadays with all this sensor rinse malarky, i'm not sure.... But that is actually why the extra rinse was added in the first place

HTH Dan

 

[launderess]

I Repeat

Proper laundry techique is the combination of four main factors: exposure time, chemicals, water temperature, and mechanical action. If one or more of these varibles are changed, the others are affected and must be altered as well.

Cold or cool water washing of laundry reduces the thermal energy component of the mix, therefore the remaining group must be changed to compensate. Normally this translates into using either a more powerful detergent, increased dosage of detergent, and or longer wash times.

If one increases detergent levels, or uses a very highly concentrated/more powerful product, it is a pretty safe bet that an extra rinse or two may be required to ensure all chemcials and other residues are removed from textiles.

 

[launderess]

Miele Washers And Water Temperatures/Cycles

Older Miele washers such as mine have a system designed to ensure wash times remain constant regardless of water temperature selected. Kind of advanced for an electronic timer controlled machine of it's day, but kind of maddening if one wants to get things over with.

Thankfully being that the machine is timer controlled, can stop/advance the wash and get to the rinses without too much bother.

 

[logixx]

Really? I though it had to do with the (lack of) temperature differential between 60C and cold water and 40C and cold water - as described above. This is how Miele describes its sensor rinse:

Sensor controlled rinse cycle
During the rinse cycle, cold rinse water drenches the laundry and mixes with the warm suds in the laundry, which increases the temperature of the rinse water. The increase in temperature is monitored by the suds temperature sensor NTC (R30). The temperature increase provides an indication of the rinse effectiveness.

 

[paulinroyton]

Miele

I have now managed to get hold of the instuctions for my Miele Homecare 1730.

If I choose a spin that is slow, say 400rpm or 600rpm, the machine adds an extra rinse. Also, you can set the machine to have a cool down after the main wash.

The Homecare programmes looks interesting, includes a pillow was as well.

Paul

 

[launderess]

Slower Spin Speeds

In theory may leave slightly more residue, hence the extra rinse. My older Miele does five rinses, and if one uses too much or the incorrect detergent there will be "foam" coming off the laundry if it is bunged into the spin dryer.

Cool down rinses used to be the default for all Mieles, but now IIRC one has to choose this option.

My machine will add cold water at the end of "Cotton" cycle to top off (filled to the deep rinse level), for a minute or so before draining the wash water.

On the "Permanent Press" cycle machine fills as above, drains, fills, etc several times all whilst the drum is moving about. Miele calls this "cycle rinsing" and is designed to make sure laundry is totally "cool" before going on. Man made fibers being thermoplastic, and the machine allowing wash water temps >120 on this setting, you certainly want things cooled down.

 

[l86810]

Time increase when washing at lower temperatures

Paul,

The extra 15 mins that get added on for a cooler wash (1.49 to 2.04) is due to extra washing time. As Launderess says; a decrease in temperature means an increase exposure time to compensate.

Additional detergent is also needed,,, but the extra rinse the machine carries out to remove this, is done in the same time as the rinse process takes for temps 60-90oC

logixx; I've read that too! It was part of a Navatronic press release. Assumed it was only on the Navatronic as mine has never ended a rinse early (i.e. once the temperature of the rinse water has stopped increasing)