Wiesenfield WI-CF-200 Manuel D'utilisation page 12

d) The device must be regularly inspected to check its technical efficiency and
spot any damage.
e) Use a soft, damp cloth for cleaning.
f) Do not use sharp and/or metal objects for cleaning (e.g. a wire brush or a
metal spatula) because they may damage the surface material of the
appliance.
g) Do not clean the device with an acidic substance, agents of medical purposes,
thinners, fuel, oils or other chemical substances because it may damage the
device.
Manual rev. 26-03-2021