Woolen fabrics CAUTION for woolen fabrics. These do not belong in the washing machine or in the dryer. Woolen materials, if they are soiled and can not be cleaned by brushing, treat with a sponge and foam carefully, if possible ONLY the place which is affected. It is best to brush the wool only.
Should a complete washing be necessary, then bring to the next cleaning, no self-experiments in the washing machine or by hand wash. That should be worth the good piece nevertheless.