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ENG
"osmosi inversa" +0300017IE rel. 1.3 - 12.10.2016
1.7 Speci cations of the feed water
Water to be treated must be clear and drinking type; it must comply
with the parameters recommended by the 98/83/EC standard. The max.
allowed concentration is the following:
Appearance 1000 µS
Turbidity < 1 NTU
Iron < 0,15 ppm
SDI (Silt Density Index) < 3
Water temperature 5 ÷ 30 °C
Free chlorine < 0,2 ppm
TDS (Total Dissolved Solids) < 750 ppm
Water hardness < 30 °Fr
SO4 < 75 ppm
SiO2 < 15 ppm
TOC (Total Organic Carbon) < 3 mg/l
COD (Chemical Oxygen Demand) < 10 mg/l
Tab. 1.c
Again depending on the characteristics of the water being treated, the
membrane separates around 93 % of all dissolved salts and can also trap
bacteria. Nonetheless, it is also worth checking the quality of the feed
water, so the membrane will not be damaged over time by the action of
microorganisms.
1.8 Technical speci cations
(for ROC025500N - ROC040500N -
ROC0605000)
Feed water pressure 1,5...4 bar
Operating pressure 5 - 10 bar
Water temperature 5...30 °C
Room temperature 5...40 °C
Power supply 230V – 50/60Hz monofase
Storage and delivery conditions -5...40 °C and sheltered from
sunlight and excessive humidity
Function conditions 5...40 °C and sheltered from
sunlight and excessive humidity
Tab.1.c
ROC025500* ROC040500* ROC060500*
Minimum feed water fl ow-rate (l/h) 150 (referred to the pump) 150 (referred to the pump) 300 (referred to the pump)
Production (± 10%) - (l/h) 25 40 80
Drain (for 30 % recovery) - (l/h) 60 90 190
Number of membranes 1 2 2
Membrane model 2" x 15" 2" x 15" 2.8” x 15”
Installed power (W) 245 245 245
Feed water connection Ø ½" F ½" F ½" F
Permeate connection Ø Dia. 10 mm pipe Dia. 10 mm pipe Dia. 10 mm pipe
Drain connection Ø Dia. 8 mm pipe Dia. 8 mm pipe Dia. 8 mm pipe
Tab. 1.d
Note: the above data refer to clear water, without iron and free
chlorine, at a temperature of 16°C, and TDS of 250 ppm.
1.9 Electrical system conformity
The reverse osmosis desalting kits comply with the following directives:
• Machinery Directive 2006/42/EC;
• Low voltage directive 2014/35/EC
• Electromagnetic compatibility directive (EMC) 2014/30/EC
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