Whirlpool W10857666B Instructions D'installation page 18

The product is for cold water use only.
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The water system must be installed in compliance with state and local laws and
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regulations.
Do not use with water that is microbiologically unsafe or of unknown quality
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without adequate disinfection before or after the system. Systems certified for
cyst reduction may be used on disinfected waters that may contain filterable
cysts. EPA Est. No. 10350-MN-005.
Refer to the "Warranty" section (in the User Instructions or User Guide) for the
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Manufacturer's limited warranty, name and telephone number.
*Class I particle size: >0.5 to <1 um
***Compliant for Lead reduction requirements under NSF/ANSI Standard 53 as tested by Pace Analytical Services, Inc.
Based on the use of Cryptosporidium parvum oocysts
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Fibers greater than 10 um in length
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NSF is a registered trademark of NSF International.
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Application Guidelines/Water Supply Parameters
Water Supply
Water Pressure
Water Temperature
Service Flow Rate
Potable City or Well
35 - 120 psi (241 - 827 kPa)
33° - 100°F (1° - 38°C)
0.78 gpm (2.95 L/min.) @ 60 psi