Fagor VISUAL PLUS VPE-061 Manuel D'instructions page 47

ENGLISH
D) Water descaling:
For water with a high level of limescale (without chloride load) the water should
be treated. Systems: H+. Interchange of ions or Kleensteam. We strongly advise
against the use of sodium exchangers (normally used in dish washers) due to the
formation of sodium sediment and the delay in boiling with common salt.
We recommend the manufacturer, Britta, for the selection of filter systems (A, B, C, D).
Warning
Before connection, look at the label that shows which is the water inlet.
VISUAL PLUS INSTRUCTIONS MANUAL
47