Fagor AD-505 - Page 48

22/07/2019
47
SERVICE MANUAL
EVO FRONT LOADING DISHWASHER
After analysing the hardness of the water, the technician should change the water hardness setting in accordance
with the measurements in the configuration menu.
WATER HARDNESS
0-9ºdF(NO-SOFT) / 9-18 ºdF / 18-27 ºdF / 27-36 ºdF / 36-45 ºdF / >45 ºdF
WATER HARDNESS
ºhF
French degree
ºeH
English degree
ºdH
German degree
Classification
Cycles for
short regeneration
0-9
0-6.3
0-5
Very soft
--
9-18
6.3-12.6
5-10
Soft
35
18-27
12.6-19
10-15.1
Medium hard
25
27-36
19-25.3
15.1-20.2
Hard
18
36-45
25.3-31.5
20.2-25.2
Very hard
10
>45
>31.5
>25.2
Extremely hard
8
The machine notifies the user with a flashing message on the DISPLAY that the salt reservoir requires filling A5-
LOW SALT. This warning usually takes several cycles to disappear after the reservoir has been topped up.
The regeneration process is automatically carried out in accordance with the hardness of the water, but this is not
detected by the user as it takes place in the background. Sometimes however, the wash cycle may be extended by
a few minutes.
Sometimes when the machine is switched on, the message “REGENERATION”, is displayed, indicating that the
regeneration process will take place in a few minutes before the appliance is filled.
Occasionally the machine runs a more exhaustive regeneration cycle 15 minutes after it is switched off. The
message “REGENERATION” is displayed for 15 minutes.
By far the most used unit in the water treatment sector is the French degree, written as follows: hFº. This unit
indicates the amount of lime and magnesium in the water.
However there are many other units which are used frequently. Ideally these should be converted to French
degrees as described below:
Mg/l of calcium:
Equivalent to 0.25 ºhF. That is, if we have 60 mg/l of calcium, we multiply this by 0.25 ºhF to obtain the figure of 15
ºhF. In this particular case, we must add the result for mg/l of magnesium in French degrees.
Mg/l of magnesium:
Equivalent to 0.413 ºhF. That is, if we have 30 mg/l of magnesium, we multiply this by 0.413 ºhF to obtain the
figure of 12.39 ºhF. In this particular case, we must add the result for mg/l of calcium in French degrees.
(To determine the final hardness of the above units, the two results are added together in hFº. In the above case:
15 ºhF + 12.39 ºhF = 27.39 ºhF).
Mg/l de CaCO3:
Equivalent to 0.1 ºhF. That is, if we have 250 mg/l of CaCO3, we multiply this by 0.1 ºhF to obtain the figure of 25
ºhF.
Ppm of CaCO3:
Important! Do not confuse the reading offered by a TDS. Many of our users call us worried because their water is at
400 ppm. A TDS only measures conductivity. The ppm of CaCO3 are equivalent to mg of CacO3 in one litre.
ºdH (German degrees):
Equivalent to 1.78 ºhF. That is, if we have 36 ºdH and we multiply this by 1.78 ºhF we obtain the figure of 64 ºhF.
ºeH (English or Clark degrees):
Equivalent to 1.43 ºhF. That is, if we have 28 ºeH and we multiply this by 1.43 ºhF we obtain the figure of 40 ºhF.
Mmol/l:
Equivalent to 10 ºhF. That is, if we have 2 mmol/l and we multiply this by 10 ºhF we obtain the figure of 20 ºhF.
Mval/l (eq/l):
Equivalent to 5 ºhF. That is, if we have 3 mval/l and we multiply this by 5 ºhF we obtain the figure of 15 ºhF.