hi tsukushi!
okie for normal delicates, like silk wool, etc.
If you look at the 818 or 828 machines ah, there are two disntinct colours to denote the
delicate cycle and cotton/synthetic.
The same colour also is followed through on the temperature as well as the spin speed. So if you are using delicate cycle for silk etc, its faint the marking and the temperature that corresponds is max at 40 degrees and the spin speed is 400 then the colour changes to the darker indicator.
From here you can use that as a gauge, delicates should be spun ideally at around 400 or max at 550 and temperate should be max at 40 degrees.
Don;t worry about the spin speed and the temperature. Say for example, if you previously used to washt he towel and u used the cotton cycle and temperatyre set at 60 and spin speed at 850. Sekali you put in the delicate and use the delicate cycle but forgot to change the temp and the spin speed,
Thomson has taken care of this, if you are using the delicate cycle the system will override your temp to max at 40 and spin speed at max 550 even if hihger speed and higher temp is set. okie?
So towels the faster the better and for silk, etc maybe around 400-500 would eb alright max at 550! okie? and yes 888 is a 6kg washer