• The reverse osmosis system contains a replaceable treatment component, critical for the eective reduction of
total dissolved solids and that product water shall be tested periodically to verify that the system is performing
properly
• The inuent water to the system shall include the following characteristics:
o No organic solvents
o Chlorine: < 2 ppm
o pH: 7 - 8
o Temperature: 41 ºF ~ 95 ºF(5 ºC ~ 35 ºC)
o Iron: < 2 mg/L
o Turbidity: < 1 NTU
o Hardness: < 1000 mg/L
•
This system has been tested for the treatment of water containing pentavalent arsenic (also know as As(V), As(+5), or
arsenate) at concentrations of 0.050 mg/L or less. This system reduces pentavalent arsenic, but may not remove other
forms of arsenic. This system is to be used on water supplies containing a detectable free chlorine residual at the system
inlet or on water supplies that have been demonstrated to contain only pentavalent arsenic. Treatment with chloramines
(combined chlorine) is not sucient to ensure complete conversion of trivalent arsenic to pentavalent arsenic. Please
see the Arsenic Facts section of this Performance Data Sheet for further information.
• Eciency rating means the percentage of the inuent water to the system that is available to the user as reverse
osmosis treated water under operating conditions that approximate typical daily usage.
• Refer to the owner’s manual for specic installation instructions, manufacturer’s limited warranty, user
responsibility, and parts and service availability.
• For parts and service availability, please contact your local dealer or Coway.
Model of Filter Type Usable period (Months)
CNFN8S NEO-SENSE FILTER 6
CRMFN8S-20-N2 RO MEMBRANE FILTER 24
CIFN8S-PLUS PLUS INNOSENSE FILTER 18
ARSENIC FACTS
Arsenic (abbreviated As) is found naturally in some well water. Arsenic in water has no color, taste or odor. It must be
measured by a lab test. Public water utilities must have their water tested for arsenic. You can get the results from your water
utility. If you have your own well, you can have the water tested. The local health department or the state environmental
health agency can provide a list of certied labs. The cost is typically $15 to $30. Information about arsenic in water can be
found on the Internet at the US Environmental Protection Agency website:
www.epa.gov/safewater/arsenic.html
There are two forms of arsenic: pentavalent arsenic (also called As(V), As(+5), and arsenate) and trivalent arsenic (also called
As(III), As(+3), and arsenite). In well water, arsenic may be pentavalent, trivalent, or a combination of both. Special sampling
procedures are needed for a lab to determine what type and how much of each type of arsenic is in the water. Check with
the labs in your area to see if they can provide this type of service.
Reverse osmosis (RO) water treatment systems do not remove trivalent arsenic from water very well. RO systems are very
eective at removing pentavalent arsenic. A free chlorine residual will rapidly convert trivalent arsenic to pentavalent
arsenic. Other water treatment chemicals such as ozone and potassium permanganate will also change trivalent arsenic to
pentavalent arsenic. A combined chlorine residual (also called chloramine) may not convert all the trivalent arsenic. If you
get your water from a public water utility, contact the utility to nd out if free chlorine or combined chlorine is used in the
water system.
The CHP-6310L and CP-6310L system is designed to remove pentavalent arsenic. It will not convert trivalent arsenic to
pentavalent arsenic. The system was tested in a lab. Under those conditions, the system reduced 0.050 mg/L pentavalent
arsenic to 0.010 mg/L (ppm) (the USEPA standard for drinking water) or less. The performance of the system may be dierent
at your installation. Have the treated water tested for arsenic to check if the system is working properly. The RO component
of the CHP-6310L and CP-6310L system must be replaced every 20 months to ensure the system will continue to remove
pentavalent arsenic. The component identication and locations where you can purchase the component are listed in the
installation/operation manual.
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