Whirlpool WHCF-DUF User Manual
Model whcf-duf, Under sink main faucet filtration, Installation, use & care guide
The contaminants or other substances removed or reduced by
this water filter are not necessarily in all users’ water.
Filter life varies depending on local water conditions and the vol-
ume of water used. We recommend that you change your filter
every 6 months. However, it can be replaced earlier if there is a
drop in pressure at the faucet.
To reduce Chlorine Taste and Odor,
use Replacement Filter: WHCF-GAC
Do not use with water that is microbiologically unsafe or of unknown quali-
ty without adequate disinfection before or after the system.
Systems certified for Cyst reduction may be used on disinfected water
that may contain filterable cysts. EPA Establishment #070595-CT-001
Filter Cartridge Replacement Instructions:
NOTE: Before changing cartridge, turn off incoming water
supply. Place a bucket under filter to catch the small amount
of water that will run out after housing removal.
1. Shut off water.
2. Relieve pressure in housing by pushing red vent button.
3. Unscrew housing and remove old cartridge. Wash housing
thoroughly with mild soap and water.
4. Insert new cartridge and re-install housing. Be sure cartridge is
seated in the housing before tightening onto head.
5. Use filter wrench to fully seat the cartridge. Tighten to make a
water tight seal.
6. Turn on water. If any leaks appear, tighten housing as needed.
7. Flush system for five (5) minutes.
Water Leaks at Threaded Fittings:
Tighten slightly more until leak stops.
Water leaks at Push-in Connections
Push tubing in as far as it will go. If leaking continues, shut off
water at the original valve and remove water line by pushing in on
the connector collar while pulling the tubing away. (See Push-in
Fittings Section) Inspect tubing for cracks and scratches. If tubing
is cracked or scratched, simply cut that portion away and reinsert
tubing into fitting.
Make sure tubing is cut straight. If not, recut.
Help Line 1-866-245-9474
Monday Through Friday
8:00 a.m. to 9:00 p.m. EST
or write us at
Whirlpool Water Products
PO Box 765
Meriden, CT 06450
Whirlpool Water Products
Meriden, CT 06450
UNDER SINK MAIN FAUCET
Installation, Use & Care Guide
® Registered trademark/TM Trademark of Whirlpool, USA,
used under license.
© 2004 Whirlpool Corporation. All rights reserved.
TEFLON is a registered trademark of E.I. Dupont
® Marca registrada/TM Marca de comercio de Whirlpool, USA,
usado bajo licencia.
Todos los derechos reservados.
TEFLON es una marca registrada de E.I. Dupont
1 Year Limited Warranty
CUNO Incorporated warrants the original purchaser-consumer of its Product
that is free of defects in materials and workmanship. Any defect, malfunction, or
other failure of the Product to conform to this warranty will be remedied by
Warrantor in the manner provided below.
This Warranty, together with any warranties implied by law, shall be limited to a
duration of one (1) year from the original date of purchase by the consumer.
This Warranty does not apply to defects that result from abuse, misuse, alter-
ation or damage not caused by CUNO Incorporated.
THIS WARRANTY DOES NOT COVER, AND IS INTENDED TO EXCLUDE ANY
LIABILITY ON THE PART OF WARRANTOR, WHETHER UNDER THIS WAR-
RANTY OR UNDER ANY WARRANTY IMPLIED BY LAW, FOR ANY INDIRECT
OR CONSEQUENTIAL DAMAGES FOR BREACH HEREOF OR THEREOF.
Note: Some states prohibit limitations on the duration of implied warranties and
on the exclusion of indirect or consequential damages; and so the limitation on
implied warranties and on incidental and consequential damages may not be
applicable to you.
RESPONSIBILITY OF WARRANTOR
CUNO Incorporated’s responsibility under this warranty shall be to repair at its
expense, at no charge to the original purchaser-consumer any product that is
actually defective, malfunctioning or otherwise in violation of this warranty. If
CUNO Incorporated for any reason cannot repair a Product covered hereby
within two (2) weeks after receipt of the original purchaser-consumer’s notifica-
tion of a Warranty claim and the Product, then CUNO Incorporated’s responsi-
bility shall be, at its option, either to replace the defective Product with a compa-
rable new unit at no charge to the consumer or to refund the full purchase price.
CUNO Incorporated’s obligations of repair, replacement, or refund are condi-
tioned upon the return of the defective product to CUNO Incorporated.
If any Product hereby is actually defective within the terms of this Warranty, then
CUNO Incorporated will bear all the reasonable and proper shipping and mail-
ing charges actually incurred in the consumer’s return of the Product set forth
herein. If the Product proves not to be defective within the terms of this
Warranty, then all costs and expenses in connection with the processing of the
consumer’s claim hereunder shall be borne by the consumer.
RESPONSIBILITY OF THE CONSUMER
The original purchaser-consumer’s sole responsibility in the instance of a war-
ranty claim shall be to notify CUNO Incorporated of the defect, malfunction or
other manner in which the terms of this Warranty are violated. You may secure
performance or obligations hereunder by (in writing):
1. Identifying the Product involved (by model or serial number or other sufficient
description that will allow Warrantor to determine which product is defective).
2. Specifying where, when and from whom the Product was purchased.
3. Describing the nature of the defect, malfunction or other violation of this
4. Return the Product, with the above information to:
CUNO Incorporated, 400 Research Parkway, Meriden, CT 06450, U.S.A.
THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU MAY
ALSO HAVE OTHER RIGHTS, WHICH VARY FROM STATE TO STATE.
Push in gre
collet to release
held, pull tubing
Push tubing in as far as
it will go.T
ubing must be
inserted past o-r
to ensure it is secured.
“Using Push-In Fittings”
ap T eflon
tape (2 1/2
wraps) around the 3/8”
ting in a clockwise direction
and fasten to filter head
(see Figure 5).Do not use
pipe sealant (dope), as sol-
vents in some types of pipe
dope may cause damage to
t water supply line to
ked "IN" (see
Figure 6, A) and insert
faucet line to por
"OUT" (see Figure 6, B).
ing to section “Using
plastic tubing into fittings,
making sure end of tubing
is firmly seated to bac
ket to filter head with
four Phillips head scre
(See Figure 7.) Fasten br
acket to w
with four Phillips head scre
illing holes, br
be used as a template for making
screw hole locations
icate housing o-ring with w
10.Place filter into housing.
(See Figure 8.)
Align housing to filter head and screw
onto filter head.Tighten with wrench to
wly turn w
ater supply on while depressing red air
release button on filter head and chec
k for leaks
or 5 minutes with an open f
aucet to flush out air.
3/8" T ube
3/8" x 1/2"
For Use With Cold
items from under the sink.Place a catch basin
there to collect small amounts of water that ma
y run out when dis-
connecting water supply lines
off cold water supply v
alve and remo
existing fitting and/or
tubing from cold water side of f
le sump to filter head and attach filter brac
Use this assembly to mar
k a location under the sink that is not in
y but allo
ws for easy access to change filter
w room to
operate housing wrench and a minim
um of 2 1/2”clear space belo
the unit to facilitate changing car
.Once this is done disassem-
ble components f
mine length of tubing required from filter
ket to f
aucet and from water supply line
to filter head/brac
y holding tubing in place
ensuring it is of appropr
iate length.Do not kink
tubing as this will impede water flo
loop tubing around to avoid it being kink
Cut tubing straight with a utility knif
e or tube cut-
ter (for copper piping).
(See Figure 1.)
aucet adapter fitting to faucet (see
Figure 2).Do not o
tighten to prevent dam-
age to fitting.Ref
erring to section
Push-In Fittings”, insert a section of plastic
tubing into fitting, making sure end of tubing is
firmly seated to bac
5.Onto one end of the remaining sec-
tion of tubing, slide the compression
ut and ferr
ule onto the tubing and
put in the tube insert (see Figure 3).
Fasten this assemb
ly onto 3/8”w
Do not over
ertightening will cause
tubing to separate from fitting.
Filter Head Brac
and eight Phillips
3/8”Fitting x 1/2”
o 3/8”x 3/8”
rts and Material Inc
Kit contains components necessary to connect 3/8”
outlet tube to 1/2”
faucet fitting and 3/8”
any other siz
connection, you ma
y need other parts f
or installation as required.
This filter can be used at any sink where w
ater is used for dr
Gather the required tools before star
ting installation.Read and f
low the instr
uctions provided with an
y tools listed here.
ols and Pa
Phillips Head Screwdr
Utility Knife or
T ube Cutter f
Properly tighten all fittings to ensure a leak-free assemb
Install in a location that is not susceptible to freezing temper
as damage to the housing could occur.
from direct sunlight as prolonged exposure to light
en plastic components.
Some local codes may require the use of a licensed plumber or
certified installer when disr
upting a potable w
w any and all local codes and requirements
Allow room to oper
ate housing wrench and a minimum of 2 1/2”
clear space below the unit to f
acilitate changing of the filter.