Emperor PWCRO, Manual

Page: 25 / 60

Membrane Element
Membrane Type : Polyamide Thin-Film Composite pH Range, Short Term Cleaning (30 Min): 1-13
Maximum Operating Temperature (°F / °C): 113 / 45 Maximum Feed Silt Density Index (SDI): 5
Maximum Operating Pressure (psi / bar): 400 / 27.58 Chlorine / Chloramine Tolerance (ppm): 0
pH Range, Continuous Operation* : 2-11
*Maximum temperature for continuous operations above pH 10 is 95°F / 35°C
Part Num-
ber
Description Applied Pres-
sure (psi / bar)
Permeate Flow
Rate (gpm /
m3 /d)
Nominal Salt
Rejection
200394 Ultra Low Energy Mem-
brane 4 x 40
80 / 5.52 225 / 0.85 98.50
Warranty Evaluation Test Conditions: Permeate flow and salt rejection based on the fol-
lowing test conditions - 550 ppm, filtered and dechlorinated municipal tap water. 77°F /
25°C, 15% recovery and the specified operating pressure. Minimum salt rejection is 96%.
Permeate flows for warranty evaluation may vary +/- 20%. Maximum pressure drop at 13
psig / 0.9 bar
A B C D
40 in / 1016.00 mm 1.1 in / 27.94 mm 0.75 in / 19.05 mm 3.95 in / 100.30 mm
*Fits nominal 4.00" I.D Membrane housings.
Proper start up of reverse osmosis water treatment systems is essential to prepare the
membranes for operating service and to prevent membrane damage due to overfeeding
or hydraulic shock. Before initiating system start up procedures, membrane pre-treat-
ment, loading of the membrane elements, instrument calibration and other system checks
should be completed.
25