Grunbeck softliQ:PA, Руководство по эксплуатации

Страница: 65 / 76

Other information
65 | 76
13 Other information
13.1 Explanation of terminology
Drinking water
Drinking water is any water that is intended for use in the
domestic environment for drinking and all other food
preparation purposes, for personal hygiene and cleaning as
well as for cleaning objects that do not only temporarily
come into contact with foodstuffs or the human body.
Raw water Raw water is the untreated water before it passes through
the filter.
Soft water Soft water is the general term for softened water, and is also
referred to as softened or decalcified water.
Fully softened water Water with a residual hardness of 0 °dH (0 °f).
Regeneration water This water is saturated with calcium ions following
regeneration, and is flushed out of the system into the drain.
System capacity Describes the quantity of fully softened water that the water
softener can create.
Turbine water meter A very small turbine fitted in the system which transmits
pulses to a sensor by means of a magnet, thereby allowing
the water flow rate through the system to be measured.
13.2 Sodium content in the water
When softening water by 1 °dH (0.18 mmol/l), the sodium content increases by approx.
8.2 mg/l. Drinking water regulations in Germany specify that the sodium content of drinking
water is not allowed to exceed 200 mg/l. Select a soft water hardness with a sodium content
less than 200 mg/l.
The local water utility will inform you about the sodium content of your raw water.
Sample calculation:
Raw water hardness: 28 °dH (50 °f, 5 mmol/l)
Sodium content in the raw water: 10.5 mg/l
Admissible increase of the sodium content by softening:
● 200 mg/l - 10.5 mg/l = 189.5 mg/l
● 189.5 : 8.2 = 23 °dH (41 °f, 4,1 mmol/l)
The raw water hardness may be reduced from 28 °dH (50 °f, 5 mmol/l) to 5 °dH (9 °f,
0.9 mmol/l).