HygroMatik WL-RO-170, Руководство пользователя

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Page 19
5. Technical Data
5.1 Raw water requirements regarding water
quality
The system may only be operated with water that is free of
iron and manganese .
Water salinity must not exceed 750 mg/l .
Chlorine concentration in the water must not amount to
greater than 0.1 mg/l .
If water hardness does not exceed a maximum of 25 °dH
( 12 °dH KH ), the system may be operated without pretreatment
by a softening device. Otherwise, a softening plant must be
installed upstream in order to replace the calcium and magne-
sium salts contained in the water for neutral salts. Failure to
observe these hints may leed to hardness precipitation and
membrane blocking.
5.2 Raw water requirements regarding pres-
sure
Inlet pressure of the raw water must be at least 2 bar and must
not exceed a maximum of 6 ba r (inlet pressure is restricted by
the pressure regulator set to 6 bar).
In order to allow for blending the permeate with raw water, inlet
pressure of the raw water must be
1 bar beyond permeate
pressure . Permeate pressure may be monitored by means of
the PI110.60 pressure gauge.
5.3 Permeate quality
The plant has a desalination rate of 96 to 98 %. As such, per-
meate with a
conductivity from 5 to 20 µS/cm is produced
from typical drinking water complying with valid drinking water
regulations. In case of water with heavy mineral loading, how-
ever, conductivity may be significantly higher.