KOHLER K-77688 Installation Manual

Installation and Care Guide

Replacement Filter Cartridge

Français, page ″Français-1”
Español, página ″Español-1”

1285428-2-B

Tools and Materials

Permanent
Marker

RagsBucket

Before You Begin

For K-77686, two identical filter cartridges are required. To
maintain proper performance, replace both filter cartridges at the
same time.

Replace the filter cartridges every 6 months, when the capacity
has been exceeded, or when a noticeable decrease in water flow is
observed.

1285428-2-B 2 Kohler Co.

1. Remove Existing Filter Cartridge

NOTE: Used filter cartridges can be recycled. In the U.S. only,
follow the instructions on the envelope provided. Drain as much
water as possible from the used filter cartridge before shipping.

Position a bucket, pan, or rag under the filtration system to catch
residual water.

Turn the filter cartridge 90° clockwise, and pull down gently to
remove.

Discard or recycle the used filter cartridge.

Kohler Co. 3 1285428-2-B

O-Rings

Cap

Write the date
on the label.

2. Install New Filter Cartridge

IMPORTANT! For the K-77686: Two identical filter cartridges are
used. To maintain proper performance, replace both cartridges at the
same time.

Write the installation date on the new filter cartridge label.
Remove and discard the cap from the filter cartridge.
Inspect the filter cartridge for damage.
Verify that both sets of O-rings are present and are positioned

correctly in the grooves.

NOTE: The filter cartridge will only engage into the filter head one
way. Do not force the components.

Align the filter cartridge so the label is to the left, and press
upward so the filter cartridge key engages into the filter head.

Use your hand to rotate the filter cartridge counterclockwise 90°
until it stops and is securely engaged into the filter head.

3. Installation Checkout

Check the filter cartridge connections for leaks. Repair as needed.
Run water through the faucet for at least 5 minutes to remove

any air and carbon particles in the system.

1285428-2-B 4 Kohler Co.

Troubleshooting

This troubleshooting guide is for general aid only. For warranty
service, contact your dealer or wholesale distributor.

For service parts and replacement filter cartridges, visit your product
page at kohler.com.

Symptoms Probable Causes Recommended Action

1. Water leaks

between the
filter head and
the filter
cartridge.

A. An O-ring is

damaged, dirty, or
out of place.

A. Turn off the water

supply, and relieve
water pressure.
Remove the filter
cartridge and inspect
the O-rings for
damage or debris,
and ensure that the
O-rings are in place.
Replace or reinstall
the filter cartridge,
turn on the water
supply, and check for
water leakage.

Kohler Co. 5 1285428-2-B

Kohler Aquifer® Filtration System
Replacement Cartridges: K-77687 (1 Pack) & K-77688 (2 Pack)

Model Series: K-77685 Single Manifold System
Flow Rate: 0.85 gpm (3.21 lpm)
Capacity: 389 gal (1,472 L)

Model Series: K-77686 Double Manifold System
Flow Rate: 1.70 gpm (6.43 lpm)
Capacity: 778 gal (2,945 L)

The K-77685 and K-77686 models are tested and
certified by IAPMO R&T Lab and IAPMO R&T
against CSA B483.1; NSF/ANSI Standard 42 for
the aesthetic reduction of chloramines and Particulate
Class I; NSF/ANSI Standard 53 for the reduction of
asbestos, cysts, lead, mercury, MTBE, turbidity and
VOC; NSF/ANSI Standard 401 for the reduction of
Phenytoin, Bisphenol A, Estrone, Ibuprofen, Naproxen,
and Nonyl phenol; and NSF Protocol P473.

See Performance Data Sheet for individual contaminants and reduction
performance.

These systems conform to NSF/ANSI 42, 53, and 401, and NSF Protocol
P473 for the specific performance claims as certified and substantiated
by test data.

The compounds certified under NSF/ANSI 401 have been deemed as
emerging contaminants.

Specifications

For conditions of use and replacement parts, refer to this guide and the
Performance Data Sheet.

Do not use on water that is microbiologically unsafe or of unknown
quality without adequate disinfection before or after this filter system.
Systems certified for cyst reduction may be used on disinfected waters
that may contain filterable cysts.

Operating Pressure: 40 psi (276 kPa) - 120 psi (827 kPa)
Operating Temperature: 33°F (0.5°C) - 100° (37.8°C)
Service parts and replacement cartridges are available from your

local distributor, or directly from Kohler Co.:

1285428-2-B 6 Kohler Co.

Specifications (cont.)

Kohler Co., 444 Highland Drive, Kohler, Wisconsin, 53044

Warranty

KOHLER®Water Filter Systems
FIVE-YEAR LIMITED WARRANTY

KOHLER water filter systems (excluding the disposable replacement
cartridges) used in the United States and Canada are warranted to be
free of defects in material and workmanship for five (5) years from the
date of purchase in normal residential use. (The service life of any
disposable replacement cartridge varies with local water conditions
and water consumption and thus is not warranted other than to be free
of defects in material and workmanship at the time of purchase.)

All products must be installed and operated in accordance with the
manufacturer’s recommended procedures and guidelines. Improper use
or installation could void this warranty.

If a defect is found in normal residential usage in the United States or
Canada, Kohler Co. will, at its election, repair or replace the unit, or
make appropriate adjustment. Damage caused by accident, misuse, or
abuse is not covered by this warranty. Kohler Co. is not responsible for
labor charges, removal charges, installation, or other incidental or
consequential costs. In no event shall the liability of Kohler Co. exceed
the purchase price of the product. These water filter systems have not

been tested or certified to meet regulatory standards outside the
United States and Canada. To the extent permitted by law, Kohler
Co. hereby disclaims all warranties for water filter systems used
outside of the United States or Canada whether express or implied,
including but not limited to the implied warranties of
merchantability and fitness for a particular purpose.

To obtain warranty service contact Kohler Co. either through your
Dealer, Plumbing Contractor, Home Center or E-tailer, or by writing
Kohler Co., Attn: Customer Care Center, 444 Highland Drive, Kohler,
WI 53044, USA, or by calling 1-800-4-KOHLER (1-800-456-4537) from
within the USA and Canada, and 001-800-456-4537 from within Mexico,
or visit www.kohler.com within the USA, www.ca.kohler.com from
within Canada, or www.mx.kohler.com in Mexico.

KOHLER CO. AND/OR SELLER ARE PROVIDING THIS
WARRANTY IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE. KOHLER CO. AND/OR SELLER
DISCLAIM ANY LIABILITY FOR SPECIAL, INCIDENTAL OR
CONSEQUENTIAL DAMAGES. Some states/provinces do not allow

Kohler Co. 7 1285428-2-B

Warranty (cont.)

limitations on how long an implied warranty lasts or the exclusion
or limitation of special, incidental, or consequential damages, so
these limitations and exclusions may not apply to you. This warranty
gives you specific legal rights. You may also have other rights which
vary from state/province to state/province. This limited warranty
provides specific legal rights as they apply within the USA. Other
rights may be available, but may vary from country to country.

This is Kohler Co.’s exclusive written warranty.

1285428-2-B 8 Kohler Co.