Specifications
23G-Series RO System
3024270 Rev G 12 14Oct13
Inlet Connection Thread 1-inch Female National Pipe (FNPT)
1. Continuous operation over 85F (29C) may cause
permanent decline in the membrane element performance.
Actual permeate flow rates typically increase/decrease by
1.4% for each 1F change in temperature. For other
temperatures, use “Temperature Factor Chart” (Technote
113) to determine permeate rate. Contact authorized
equipment supplier if feedwater is outside these parameters.
2. The Langelier Saturation Index (LSI) of the concentrate must
be negative to minimize the possibility of calcium scale
formation on the membrane surface. Refer to ASTM
Standard D3739.
3. Chlorine should be removed prior to the PA membrane in
order to prolong the functional life of the membrane element.
Microbiological growth will not affect the membrane itself, but
may cause fouling and significant permeate flow rate
decline. See Membrane Specification Sheet for additional
information.
4. Maintenance of feedwater Silt Density Index (SDI) as noted
would minimize membrane fouling and extend cleaning
intervals. Treatment of feed waters with higher SDI values is
possible with more frequent cleaning and/or filter changes.
Refer to ASTM Standard D4189.
5. Components such as silica, barium, manganese, strontium,
etc., must be below saturation in the concentrate. Contact
your equipment supplier for clarification if unsure.
6. It is recommended that an adjustable pressure regulator be
installed just prior to the RO in order to allow adjustment of
inlet pressure to RO. Regulator must be able to provide
adequate flow to RO.
1.9.2 Permeate (Product Water) Flow Rate
As stated on the serial number label (assumes no permeate
backpressure, 1000 mg/L TDS maximum feed concentration, and
rated temperature).
To estimate the permeate output with backpressure, use the
formula below:
(Permeate Flow on Label) x (Operating Pressure) - (Permeate Backpressure)
(Operating Pressure)
Maximum Permeate Backpressure: 60 psi (4.1 bar)