CGOLDENWALL Upright Serie Manual Del Usuario página 18

 How to Clean up the Grinding Bin
You can clean up the grinding bin of grinder with a brush first, and then
clean it with dry cloth.
After using blades for a long time, you can remove them and clean them
with water. (The blades of new grinder must be very tight, you need to
use for a long time, then blades can be removed.)
 Firstly, loosen the nut by using a pincer and remove the blade.
 Secondly, wipe the grinding bin with a dry rag after removal of the
blade, and please do not clean with water directly.
Please Note: If you clean the blades by using the wet rag or with
water directly, please make sure grinding bin and the blades be dry
enough before re-install the blades.
 Finally, install the blades and tighten the nuts.
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