2
(A)
SYSTEM SPECIFICATIONS
Model No.
Rated Service
Flow
US GPM (LPM)
Max Flow Rate
US GPM (LPM)
Min. Well
PUMP Flow
Rate
US GPM (LPM)
Inlet /
Outlet
Drain
Electrical
Pressure
Drop
Operating
Pressure
Shipping
Weight
(lbs)
CAFO 948
3 (11.3)
6 (22.7)
5 (19)
3/4"
MNPT
1/2"
Hose
110V
AC
< 15
psig
30 – 100
psig
82
(63.5 Kg)
Water Temp –
4
-
38°C (39 - 100°F)
Water pH Range –
6.8 to 8.5*
Max Raw Water Turbidity –
5 NTU
Max Raw Water Iron –
15 PPM
Alkalinity >
[2 x (Sul Chlorides)]
Chlorine -
Nil
Tannins –
Nil
Polyphosphates –
Nil
Hydrogen Sulphide -
Nil
*
Higher the pH, better the performance. If pH is lower than 6.8, call Rainfresh for information on ordering a pH Neutralizing Filter
(B)
HOW THE CAFO SYSTEM WORKS
Your Rainfresh CAFO iron-removal filter utilizes oxidation and filtration technology to remove dissolved iron from water.
This filter works by adding oxygen to the incoming water by passing it through a bubble of compressed air which oxidizes
the ferrous iron to a filterable rust form (ferric iron). The water is then passed through a special filter bed which acts as a
physical barrier to trap iron precipitate. As more water passes through this iron filter, the oxygen in the unit is used up, and
the media gets loaded with iron. The automatic backwash process then replenishes the supply of oxygen, and flushes away
the precipitated iron trapped in the media bed.
The backwash process is completely automatic and is factory set for 12:00 AM (can be changed).
Note:
No salt or chemicals are required to clean the system. As such it is typically safe to dump the water into the septic
system. However, because in every backwash cycle, about 60 gallons of water are used to clean the system, it is
recommended that you consult a professional to ascertain the safety of the water going into your septic system.
(C)
SAFETY PRECAUTIONS
-
Follow all applicable province/state and local regulations.
-
Handle the filter carefully. Do not lie on side, turn upside down, drop or drag.
CAUTIONS BEFORE INSTALLATION
Follow all plumbing codes for installation.
To operate properly, the well pump flow rate must exceed the backwash flow rate (4.5 US GPM (17 LPM)). If your
well pump does not deliver this flow rate, do not install the unit as it will not work properly. You may need to either
change the well pump or call Rainfresh for a custom size unit that will operate within your pump specifications.
The automatic control valve works on 110V AC. We recommend a GFI (ground fault interrupter) 120 volt outlet
within 5 feet of the filter. Extension cords are not recommended.
CAFO systems do not kill or remove bacteria or any other pathogenic microorganisms. To continuously disinfect all
the water in your house, we recommend that you install a Rainfresh UV system. Call Rainfresh for details.
For use on cold water only.
Only use thread seal tape
(Teflon® tape)
for fitting connections into unit.
DO NOT USE pipe dope or chemical
sealants.
If water pipes are used to ground electrical system, install jumper wire
(#4 gauge solid copper wire) across the unit
to maintain proper grounding of your electrical system
Protect your unit from freezing
- drain the unit if freezing temperatures exist.
Do not use petroleum based lubricants
on O-rings as they will cause swelling and result in water leakage.
NOTE: IF SOLDER TYPE FITTINGS ARE USED DO NOT USE torch near inlet/outlet connections.
All solder joints
should be made before joining pipe to filter head.
DO NOT over-tighten
metal fittings on to unit connections.
