Lime deposit should be removed from the evaporator once
or twice a month depending on the degree of hardness of
the tap water. Take of the upper part of the water still and
remove the silicone packing. A mixture of 10% formic acid,
10% acetic acid and 80% distilled water is recommended
for cleaning the apparatus. Fill the solvent into the
evaporator to just above the highest lime deposit and heat
to approx. 70oC. The evaporator is clean after approx. 15
to 20 minutes. pour out the lime and solvent mixture
thoroughly rise with water.