AquaFX The AquaFX Stingray - Manual (Page 7)

Filter Change Sheet and Normal Operation
Note: Filters are referenced in the order in which they appear in the system
1. Sediment Filter: This filter is first in line; removes particles that can be
physically filtered out. An example of a particle that would be removed is
sand. This filter’s life depends on the amount of particles in your water. The
best gauge of this filter’s life is pressure drop. When you see a 5PSIG drop,
you should change your filter. Discoloration is also a sign that the filter is
loaded and therefore time to replace with a new filter.
2. Carbon Block, GAC or Chloramine Blaster Filter: These filters effectively
reduce VOC’s (Volatile Organic Compounds) ONLY for water that is safe by
the federal Safe Water Drinking Standards. If you have water with a known
containment, you need to treat it accordingly. The only cost effective way to
predict filter life is by estimating the gallons. (unless carbon is being used for
a know containment, then testing is essential) The carbon block will filter
3,750 gal @ 1.0 GPM of 2ppm Chlorine (Cl
2
). A GAC will yield 5000 gallons
of treated water@ 1.0 GPM of 2ppm Chlorine (Cl
2
) . The Chloramine
Blasters are run 2 in series and will yield approximately 8000 gallons of
treated water
Do not exclude drain water from this capacity, as it is treated water
.
3. Reverse Osmosis Membrane: This is the first component in the system that
reduces Total Dissolved Solids (TDS); a common example of dissolved solids
can be salts or calcium. A TDS meter is the best way to determine if your
membrane is operating properly. A properly operating membrane will give
you a TDS reduction of at least 90%. EXAMPLE: Raw water TDS is 100ppm,
after the membrane it should be 10ppm or less. Membranes can fail by
Clogging or Scaling, in which case very little or no water will be produced.
Membranes will also fail from contact with chlorine. If this happens the water
quality will be very poor. So changing the carbon filter on time is essential.
Hot water will also ruin a membrane (>80 Deg. F). If your membrane
produces significantly more than it is rated for, that is an indication that
something is wrong.
4. Deionization Filter (DI): IF USED The DI filter is the last filter inline. This
filter consists of 2 resins. One is charged with Hydrogen (H+) and the other a
Hydroxide ion (OH-
). As water passes over these resins, the remaining “salts”
(or ions) exchange out and only H+ and OH- are released into the stream.
Due to the quality of resin we use, the water you get will be, literally as pure
as possible. The resin is a color indicating resin; it will slowly change from a
dark purple/blue/black to a rust red/orange color. As this filter nears the end
of its useful life you may experience “break though”. Keep this in mind,
depending on the water quality needed. For applications demanding 18
Mega-
Ohm water, 2 DI’s are STRONGLY recommended.