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Z Series RO System by GE Osmonics
Ultra Filters and Sub-micron Filters
Ultra and Sub-micron filters are used to remove undesirable solids from the water.
Normally these filters are used in the distribution loop to remove microorganisms and
media fines. In some instances ultra filters are used in front of RO units to remove
harmful colloids. In these circumstances the ultra filter is employed in a unit similar to
an RO. Most frequently, filtration devices are used in the distribution plumbing. Sub-
micron filters remove particles larger than 0.1 microns; ultra filters remove particles to
0.001 microns and remove endotoxins as well.
1.10 Pre Treatment and Other Device RO Interlocks
1. Pre-treatment provided by a company other than GE Osmonics must come
equipped with a micro switch that is closed when the device goes into
regeneration or backwash. This is required to be able to connect the RO interlock
circuitry to the equipment.
2. Any device provided by another company that is required to be interlocked to the
RO unit so it does not operate (run) during a specific period of the devices
operation must have a normally open micro switch that when activated (closed)
can return a 24VAC signal to the RO unit controller.
1.11 Specifications:
1.11.1 Input Water Requirements
NOTE:
Input water flow rate is dependant upon the size of each RO. In order to determine the
minimum required flow rate of an RO measure in GPM, find the Product flow rate in the
chart below, divide by % recovery, and add 5 GPM.
NOTE:
The maximum water temperature of 38C (100F) is for short-term operation only.
Minimum Maximum
Dynamic Pressure 30 PSI (Typical) 100 PSI
Temperature 1.7°C (35°F) 38°C (100°F)
pH Levels
pH (operating) TF Membranes 4.0 11.0
pH (cleaning) TF Membranes 2.0 11.5
pH w/ chloramines present
(operating) TF Membranes 4.0 8.5
1238339b – 16Oct03 1 - 14 General Information