K. frEQUEnTly aSKED
QUESTiOnS (faQ)
What does the System do?
This System has been tested to significantly physically
block pathogens including bacteria, viruses and cysts from
your water. The pore size on the surface of the ultrafilter
membrane is 0.02 microns nominal. The System has been
certified by the National Sanitation Foundation (NSF)
for NSF 42 and 53 (aesthetic and health claims) for the
removal of Cysts, Turbidity, Particulates and Chlorine.
Further test results from BioVir Laboratories in California
include bacteria and virus reduction performance. Please
refer to
C. CErTifiCaTiOn
for more information.
W h e r e s h o u l d t h e S y s t e m b e i n s t a l l e d ?
The System is installed inside the home at the point where
water enters the house so that filtered water is provided from
every tap. In order to allow only indoor water to be treated, a
dedicated line should be installed from the inlet of the System
to all external taps for pool or hot tub makeup valves and
irrigation systems. Reducing the volume of water filtered
will assist in prolonging the life of the System membrane.
For Spacing Requirements refer to
J. SPECifiCaTiOnS.
D o e s t h e S y s t e m r e q u i r e e l e c t r i c i t y ?
In most installations, the System runs on existing
household water pressure provided that a minimum pressure
of 30 psi is met. Unless electricity is required for pump
operation, the System will continue to filter water during
a power failure and Controller settings will be saved by
battery backup power. The Controller must be plugged
into a standard 120V outlet to provide power to operate
the solenoid valves that initiate flushing of the System. If
electrical power is not available, the System will not conduct
automatic cleaning and the rate of fouling will increase.
How does the System work?
Filtering -
When a household water fixture is turned on,
the water pressure forces unfiltered water into the Prefilter
Housing.
(1).
Larger particles (and chlorine when using the Carbon
Prefilter) are removed as the water passes from the outside
of the Prefilter to the inside.
(2).
The prefiltered water then passes down into the System
to the membrane chamber.
(3).
In the membrane chamber, the water travels through
membrane pores from the outside of the hollow fibre
membrane to the inside, leaving behind unwanted particles
such as bacteria, parasites and certain viruses.
(4)
. The filtered water then travels through the household
piping, to the household fixture that is being used.
automatic Cleaning Cycle
- The System uses two methods
to clean its membrane: a) flushing and b) draining. The
Controller automatically executes a cleaning sequence
consisting of a number of flushes and drains to clean
the membrane. For Systems equipped with a Base or
Advanced Controller, System cleaning is performed daily.
For Systems equipped with an Advanced Plus Controller,
System cleaning may be performed multiple times per day,
up to 24 times. For choices of cleaning sequences and
intervals, refer to the
controller settings
section under
e.
inSTallaTiOn inSTrUCTiOnS.
Water pressure inside the
dwelling will be significantly reduced during System cleaning.
Flushing
: Flushing includes a Front-flush
and a Back-
flush
. Systems that are installed in municipal, cistern, or
ground water sources may use the flushing method to
control the fouling rate of the membrane.
(5)
.
Front-flush
- The Controller opens the Drain Solenoid
Valve. The water supply line pressure causes an inrush
of water into the System, scouring the surfaces of the
membrane and expelling impurities through the drain.
(6).
Back-flush
- At the same time, the air bladder inside
the Backpulse Tank expands rapidly, pushing clean water
out of the membrane surfaces from the hollow cores. This
action dislodges and pushes out impurities trapped inside
the membrane pores. Impurities are then expelled out of
the System through the drain port.
Draining:
Systems that are installed in surface water
sources must use the draining method in addition to
the flushing method to control the fouling rate of the
membrane. During draining, the Controller closes the
Inlet Solenoid Valve and opens the Drain Solenoid Valve,
allowing water to be completely drained out of the System.
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