Franke A300 - Page 28

6 | Installation Franke Kaffeemaschinen AG
28 User manual A300
Total hardness:
4–8° dH GH (German total hardness)
7–14° fH GH (French total hardness)
4.2–8.3 GPG
70–140 ppm (mg/l)
Carbonate hardness
3–6° dH KH / 50–105 ppm (mg/l)
Acid content/pH value
6.5–7.5 pH
Chlorine content
< 0.5 mg/l
Chloride content
< 30 mg/l
TDS (total dissolved solids)
30–150 ppm (mg/l)
Electrical conductivity (measured)
50–200 µS/cm (microsiemens)
Iron content
< 0.3 mg/l
– Color: Clear
– Taste: Fresh and pure taste
– Aroma: No perceptible aroma
– No rust particles in the water
6.3.3 Determining the water hardness with a measuring strip
NOTICE
Machine damage caused by limescale build-up
If the water hardness is set incorrectly, limescale can build up in the coffee machine. Limescale deposits may
damage the coffee machine.
a) Measure the water hardness during commissioning. Then set the measured water hardness in the menu
Commissioning.
The hardness level of the water in use determines the capacity of the water filter (only in conjunction with
mains water connection) and the amount of water in between descaling cycles. Once the hardness level has
been set in the machine program, the coffee machine will automatically prompt you to descale the machine at
the correct time. The hardness level of the water in use determines the capacity of the water filter. If the
hardness level in the machine program is known, it will automatically request a filter change at the correct
time.
Packaged water hardness measuring strip 2. Dip the measuring strip into the water for 1
second.
1. Remove the measuring strip from the 3. Gently shake off any excess water.