GE F-801 - Manual (Page 17)

F-801 Internal RO System by GE Osmonics
12552e – 27 Feb 04 1 - 11 General Information
1.9 Optional Equipment
GE Osmonics offers a number of optional items to adapt the equipment to meet specific
needs. Options are available to improve the quality of the feedwater to the RO.
Frequently requested options are briefly described in the following paragraphs. If more
information is needed, or if other options are desired, please consult the factory. Refer
to Chapter xx for catalog part numbers.
Carbon Filter Tanks remove chlorine/chloramine from the feed water, preventing
damage to the RO membrane and injury to patients. The filter incorporates a bed of
granular activated carbon. Two sizes of carbon tanks come in semi-automatic control
valve and exchange head styles.
WARNING:
Carbon is not regenerated and must be replaced when exhausted.
WARNING:
A suitable carbon filter should always be present as pretreatment for the RO unit
in order to prevent chlorine/chloramine damage to the thin film RO membrane
and harm to the patient. GE Osmonics strongly recommends the use of two
carbon tanks, used in a series configuration.
Softeners remove calcium, magnesium, and other scale producing contaminants from
the feed water. Their removal prevents the build-up of scale on the membrane surface.
A control valve drives the regeneration of the softener, and will remove the hardness
ions with a brine solution and rinse the ion exchange bed afterwards. The control valve
is normally governed by a semi-automatic time clock. There are two sizes of softener
tanks available.
Multi-Media Filter Tanks are a multi layered filtration system that consists of various
sized rocks as the media layers. The media are selected on the basis of their size and
specific gravities. Capable of removing ninety-eight percent of all particles greater than
ten microns, the multi-media filter is employed to remove suspended solids and
particulates from the water. The use of the multi-media filter will extend the life of the
pre-filter and RO membrane. Multi-media filters are not portable and not commonly
used with portable RO systems.
Dealkalizers are used to lower the pH of alkaline feed water. Water with pH levels
above 8.5 with chloramines present can reduce the performance of the carbon filters
and thin-film membranes. A control valve drives the regeneration rinsing of the
dealkalizer. The control valve is normally governed by a semi-automatic time clock.
There are two sizes of dealkalizer tanks available.