GE F-801 - Manual (Page 12)

F-801 Internal RO System by GE Osmonics
12552e – 27 Feb 04 1 - 6 General Information
WATER PURITY:
Plumbing materials can significantly contribute to the contamination of the water.
Metallic pipes (with the exception of 316 stainless steel) must be eliminated once
the purification process has begun. Schedule 40 or 80 PVC pipes, polypropylene,
PVDF, and other FDA recommended materials are suitable for most grades of
purified water. Care must also be exercised in the choice of a thread sealant.
Teflon tape is suitable for all threaded connections in this system.
WARNING:
Ordinary pipe dope must be avoided since it may leach objectionable and
potentially dangerous impurities into the water.
1.6
Theory of Operation
The F-801 Portable Reverse Osmosis system (RO) purifies a given feed water (by way
of reverse osmosis) for use in hemodialysis applications. The F-801 RO possesses
monitoring for pressure, product water quality and membrane performance (percent
rejection). The unit includes pre-filtration to remove particulates greater than 5
microns, which could clog orifices or damage components. The RO pump provides the
pressure required to push water through the RO membrane. The fluid controls provide
a means of managing flow rates and pressures. The following paragraphs detail the
function of these fluid control components, which are used within the RO.