Culligan Drinking Water System User Manual

Culligan Water

Tower™

Drinking Water

System Owners

Guide

Culligan Water

Tower™

CWT35ST.3.0

NOTICE: This system is intended for use on potable water supplies or disinfected water containing
cysts. Do not use where water is microbiologically unsafe or with water of unknown quality without
adequate disinfection before or after the system. Systems certified for cyst reduction may be used
on disinfected water that may contain filterable cysts.

2

Table of Contents

Safety/Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

System Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Introduction

About Your System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

System Component Description . . . . . . . . . . . . . . . . . . . . . . . . . .5

Application Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Certified Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Servicing Your System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Cartridge Replacement, Cleaning and Sanitizing Procedure . . . . . . . . . .9

Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Service Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

California Certificate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

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System

Specifications

System Flow Sequences . . . . . . . . . . . . . . . . . .Sediment Filter, Activated Carbon Filter, Reverse

Osmosis Membrane, Storage Tank, Polishing Filter,
Dispensing Faucet.

Sediment Filter . . . . . . . . . . . . . . . . . . . . . . . . .Spun Polypropylene Type

Carbon Filter . . . . . . . . . . . . . . . . . . . . . . . . . .Activated Carbon Block

Reverse Osmosis Membrane . . . . . . . . . . . . . . .Thin Film Composite Type

Product Production Rate without

Storage Tank to Atmosphere2 . . . . . . . . . . . . . .35 gpd

Ratio of Product to Flush Flow

3

Soft Water Applications . . . . . . . . . . . . . . . .1:1

Hard Water Applications . . . . . . . . . . . . . . .1:3 - 1:5

Polishing Filter . . . . . . . . . . . . . . . . . . . . . . . . .Activated Carbon Block

Dispensing Faucet . . . . . . . . . . . . . . . . . . . . . .Culligan®Smartap®Rotary Operation, Stainless

Steel and Resin Flow Passages, with Built-in Siphon
Break and Quality Monitor

Color Options . . . . . . . . . . . . . . . . . . . . . . .Polished Chrome, Satin Chrome, White, Black,

Black/Chrome, Almond

Storage Capacity . . . . . . . . . . . . . . . . . . . . . . .3 gallons (max.)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.4 gallons (nom.)

Dimensions

Filter Assembly . . . . . . . . . . . . . . . . . . . . .15.5”W x 6”D x 15”H

Storage Tank . . . . . . . . . . . . . . . . . . . . . . .11” Diameter x 15.5”H

* DPR - Daily Production Rate
1 Rating at 50 psi, 77°F, 500 mg/L TDS influent.
2 This is a factory specification for membrane production. Actual production rate and TDS reduction

will depend on temperature, water pressure, TDS level, membrane variation and usage pattern.

3 May vary with pressure. See Technical Manual for all hard water applications and applications

where TDS exceeds 1000 mg/L (ppm).

4 Efficiency rating means the percentage of the influent water system that is available to the user

as reverse osmosis treated water under operating conditions that approximate typical daily usage.

5 Recovery rating means the percentage of the influent water to the membrane portion of the sys-

tem that is available to the user as reverse osmosis treated water when the system is operated
without a storage tank or when the storage tank is bypassed.

4

3 Gallon

System DPR* to Storage Tank

1

11.0 (41.6 L)

Efficiency Rating

4

20%

Recovery Rating

5

43%

Introduction

Thank you for choosing a Culligan Water Tower™ drinking water system. Your new system is
designed to bring you years of healthful, deliciously crystal-clear Culligan®water. With its special
faucet installed on your sink, it’s like getting bottled water straight from your kitchen tap.

With the Culligan Water Tower drinking water system, you’ll get a continuous supply of clear,
refreshing water for drinking and cooking. But Culligan improves a lot more than just water. Crystal
clear Culligan water is ideal for:

• coffee • recipes • pasta • tea • baby formula

• ice cubes • soup • houseplants • steam irons

• juice • pets • drink mixes • everything you make with water

With three separate water treatment technologies and its unique space-saving design, the Culligan
Water Tower drinking water system is the most advanced drinking water system available from
Culligan today.

About Your System

The reverse osmosis method of water treatment has long been regarded as one of the most efficient
and effective ways to reduce impurities. It’s the technology we’ve used to build your new Culligan
Water Tower drinking water system. In addition, we’ve incorporated activated carbon and fine parti­cle filtration to bring you one of the most effective systems available today.

Culligan Water Tower System Components

Sediment Filter - Refer to Figure 2, page 6

The sediment filter screens out dirt, sand, rust, and other microscopic particles 15 times smaller
than a grain of sand.

Activated Carbon Filter

The activated carbon filter gets rid of bad tastes and odors, including chlorine, if present in your
untreated water supply.

Reverse Osmosis Membrane Cartridge

The reverse osmosis (RO) membrane squeezes out dissolved substances, including radium, lead, and
many others. These substances may not be in your water. See Performance Data Sheet for list of
substances and removal percentages.

Manifold Assembly

The manifold serves as the functional hub of the system, directing and regulating the flow through
each of the system’s components. It makes the Culligan Water Tower drinking water system
extremely space efficient and simplifies filter changes.

Storage Tank

The storage tank holds Culligan®water under pressure for rapid delivery.

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Polishing Filter

The Culligan Water Tower™ drinking water system includes a second activated carbon filter in the
manifold as added assurance that your water will be crystal clear.

Culligan®Smartap®Water Quality Monitor and Faucet

The special drinking water faucet mounts conveniently on your kitchen sink. A simple twist of the
handle is all it takes to enjoy refreshing Culligan drinking water.

Your Culligan Water Tower incorporates a proven performance indicator. The patented Smartap

®

Water Quality Monitor uses dual probe LOGIC PULSE MEMORY

technology to accurately indicate membrane performance. A split-second power pulse compares feed
water Total Dissolved Solids (TDS) level with that of the product water. Then, by reversing the polar­ity of the electronic pulse, the probes are cleaned and kept free of chemical plating.

Electronics from the Culligan Water Tower connected to the Smartap faucet provides feedback on
system operation.

Indications appear in a light bar integrated into the faucet body
front cover (Figure 1). Power is provided through a nine-volt alka­line battery. To prolong battery life, indicator lights self-extinguish
after a few seconds even if water is being dispensed.

• Green means quality Culligan water

• Orange tells you that a service check is necessary

• Yellow means a filter change is required

Application Guidelines

The Culligan Water Tower drinking water system is designed for use on potable water supplies meet­ing the guidelines outlined in Table 1. The system should be installed on your home’s cold water
line. The flushing stream should discharge through an approved siphon break as illustrated in Figure
2, page 6. Installation of this system must comply with state and local laws and regulations.

6

Figure 1

Table 1

1 A pressure regulator is recommended for feed water pressures exceeding 80 psig (552 kPa)
2 See the Technical Manual for all applications where TDS exceeds 1000 ppm (1000 mg/L) to cal-

culate effective module pressure. A booster pump is strongly recommended.

3 The reverse osmosis membrane filter used in this system may be damaged by chlorine. This sys-

tem includes activated carbon which protects this element by reducing chlorine. Influent chlorine
should not exceed 2 mg/L.

4 Do not use with water that is microbiologically unsafe or of unknown quality without adequate

disinfection before or after the system.

Certified Performance

System Tested and Certified by NSF International against NSF/ANSI Standard 58 for the
reduction of: Arsenic (Pentavalent), Barium, Cadmium, Copper, Fluoride, Hexavalent
Chromium, Lead, Radium 226/228*, Selenium, Total Dissolved Solids, Trivalent
Chromium, Cysts, and Turbidity

The Culligan Water Tower™ conforms to NSF/ANSI 58 for pentavalent arsenic reduction. See per­formance data sheet and arsenic facts section for an explanation of reduction performance.

The substances removed by this system are not necessarily in your untreated water. See
Performance Data Sheet for percentages of contaminant removal.

This system has been tested for the treatment of water containing pentavalent arsenic (also known
as As(V), As(+5), or arsenate) at concentrations of 0.30 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 or on water supplies that have been demonstrat­ed to contain only pentavalent arsenic. Treatment with chloramine (combined chlorine) is not suffi­cient to ensure complete conversion of trivalent arsenic to pentavalent arsenic. Please see the
arsenic facts section of the performance data sheet of further information.

* Minimum removal based on approved testing methods with Barium as surrogate.

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Influent Water Characteristics

Pressure1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35-100 psi (242-690 kPa)

Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40-100°F (4-38°C)

Total Dissolved Solids (TDS)2 . . . . . . . . . . . . . . . . . . . . . . . .0-2000 ppm (0-2000 mg/L)

pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.0 - 11.0

Chlorine3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0-2 ppm (0-2 mg/L)

Chloramine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0-2 ppm (0-2 mg/L)

Turbidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .<1.0 NTU

Silt Density Index (SDI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .<4

Hardness (CaCO3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .<350 ppm

Hydrogen Sulfide (H2S) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.00 ppm

Manganese (Mn) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .<0.05 ppm

Iron . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0-1 ppm (0-1 mg/L)

Bacterial Quality4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Potable