ELGA MEDICA EDI - US, Operator'S Manual

Page: 37 / 41

ELGA MEDICA EDI
– US Operator Manual
MEDICA EDI - US MANU40685 Ver 2
– 10/15
Page 35
10. TECHNICAL SPECIFICATION
Feedwater
Source Potable tap water as detailed below.
Failure to comply with the minimum feedwater pretreatment recommendations
will affect the life and performance of key components within the
MEDICA EDI -
US , and may invalidate the warranty.
Contaminant Measure Range Pretreatment
Calcium Ca ppm as CaCO
3
< 250 None
> 250 Softener or
use very low RO recovery
Free chlorine Cl ppm < 0.1 Protek L2
0.1 to 0.5 Protek L2
<0.5 ppm LC123 > 0.5 Protek L2
Chloramine Chloramine ppm <0.05 LC123
0.5 to 1.0 Protek L2 if water usage is about
5000 litres per week.
>1.0 Cylinder of carbon sized correctly.
Silica SiO
2
ppm < 30 Protek L2
> 30 20 inch cartridge depth filter*
<30 LC123
Fouling Index FI <10 Protek L2
>10
<3
Backwashable media filter with a
minimum flow rate of 20l/min
LC123
Iron/manganese Fe/Mn ppm < 0.05 to 0.1 Protek L2, LC123
> 0.1 Back-washable pre- filter *
Organics TOC ppm C <3 Protek L2
> 3 Cylinder of carbon sized correctly
TEMPERATURE 4 - 40ºC (Recommended 15 - 25ºC)
FLOWRATE (maximum requirement @15
O
C) 9l/min
Drain requirements (gravity fall with air gap). 20l/min
Feedwater Pressure 6 bar (90 psi) maximum, 2 bar (30 psi) minimum.
* Installed in feed water supply.
Note: If feedwater purity is variable or values are
close to the top of one of the ranges, provide
pre-treatment for the higher range or seek
advice from Technical Support at ELGA
LabWater.
Pre-treatment LC177 and LA727 (LC123)
included in starter kits LC238 and LC237
respectively.