GE F-801 - Manual (Page 13)

F-801 Internal RO System by GE Osmonics
12552e – 27 Feb 04 1 - 7 General Information
1.7 Fluid Components
Pre-filter:
From the feed water, the fluid path flows through the softener (optional) on
through the carbon tank and then into the pre-filter, located in a blue housing
mounted on the side of the hemodialysis unit. It is a cartridge type filter with a
nominal filtration rating of five microns.
Pressure Adjust Regulator:
Used to adjust the product pressure. The pressure is displayed on the product
pressure gauge, on the front of the RO.
High-Pressure Pump:
Provides up to a 200 PSI boost of the inlet water to the Reverse Osmosis
Membrane Assembly (ROMA). The RO pump pressure is displayed on a 0 to
300 PSI gauge mounted outside the RO, below the product pressure gauge. The
pressure is factory set at 150 PSI.
Reverse Osmosis Membrane Assembly (ROMA):
One is included in the F-801 RO. A ROMA is an assembly that includes the
membrane housing, end caps, fittings, and a membrane. The thin film membrane
will produce 600 (±15%) gallons per day of product water, depending on
membrane condition and water temperature.
Waste Flow:
The Waste Flow is controlled by a length of 1/8" capillary tubing. The length of
the tube is factory determined to correctly govern the wastewater flow to drain.
CAUTION:
This tube must not be shortened.
Dialyze/Flush Valve:
The Dialyze/Flush Valve is used to flush the membrane surface of rejected
contaminants, and to accelerate the rinse out of cleaners or disinfectants from the
RO. Some pump noise (chattering) is normal in the flush position. The RO is in
"flush" from the full open (flush) to just before the fully closed (dialyze) position.
CAUTION:
Excessive “chattering” may be eliminated by slowly moving the valve from the
full flush position towards “DIALYZE”.
Product Recirculation Check Valve:
Prevents over-pressuring of the product supply. When the product pressure
exceeds the set point of the pressure regulator, the product recirculation check
valve opens. Excess product water is then recirculated back to the inlet water
flow.