Culligan CTM 21 Operation manual

CULLIGAN®
Culligan Top Mount (CTM)
Water Filters
Models from 2016
©2016 Culligan International Company
Installation,
Operation, and
Service Instructions
with Parts Lists
Cat. No. 01029343
Rev. A 04/18/16
DCO # 016181

Attention Culligan Customer:
Your local independently operated Culligan dealer employs trained service and maintenance personnel who are experi-
enced in the installation, function and repair of Culligan equipment. This publication is written specifically for these individ-
uals and is intended for their use.
We encourage Culligan users to learn about Culligan products, but we believe that product knowledge is best obtained by
consulting with your Culligan dealer. Untrained individuals who use this manual assume the risk of any resulting property
damage or personal injury.
WARNING! Electrical shock hazard! Prior to servicing equipment, disconnect power supply to
prevent electrical shock.
WARNING! If incorrectly installed, operated, or maintained, this product can cause severe injury.
Those who install, operate, or maintain this product should be trained in its proper
use, warned of its dangers, and should read the entire manual before attempting to in-
stall, operate, or maintain this product. Failure to comply with any warning or caution
that results in any damage will void the warranty.
CAUTION! This product is not to be used by children or persons with reduced physical, senso-
ry or mental capabilities, or lack of experience or knowledge, unless they have been
given supervision or instruction.
CAUTION! Children should be instructed not to play with this appliance.
CAUTION! If the power cord from the transformer to the unit looks or becomes damaged, the
cord and transformer should be replaced by a Culligan Service Agent or similarly qual-
ified person in order to avoid a hazard.
CAUTION! To reduce the risk of fire, use only No. 26 AWG or larger telecommunications line
cord.
NOTE This system is not intended for use with water that is microbiologically unsafe or of unknown quality
without adequate disinfection either before or after the system.
NOTE Check with your public works department for applicable local plumbing and sanitation codes. Fol-
low local codes if they differ from the standards used in this manual. To ensure proper and efficient
operation of the Culligan CTM Softener to your full satisfaction, carefully follow the instructions in this
manual.
Products manufactured and marketed by Culligan International Company (Culligan) and its affiliates are protected by pat-
ents issued or pending in the United States and other countries. Culligan reserves the right to change the specifications
referred to in this literature at any time without prior notice. Culligan, Aqua-Sensor, Tripl-Hull, and SoftMinder are trade-
marks of Culligan International Company or its affiliates.
Culligan International Company
9399 West Higgins Road, Suite 1100
Rosemont, Illinois 60018
1-847-430-2800
www.culligan.com

i
Cat. No. 01029343
Contents
Introduction........................................................................ 1
Basic Principles ................................................................. 2
Performance Specications............................................... 3
Installation ......................................................................... 5
Smart Controller Circuit Board Layout............................. 23
Installing Accessories...................................................... 24
Final Startup .................................................................... 40
Preventative Maintenance............................................... 41
Service and Repair.......................................................... 42
Troubleshooting............................................................... 56
CTM Parts List................................................................. 64
Appendix A Hi-Flo 42 to CTM Conversion.................... 74
Limited Warranty ............................................................. 75
Index................................................................................ 76
CULLIGAN®
Culligan Top Mount (CTM)
Water Filters
Models from 2016

ii Culligan® Culligan Top Mount (CTM) Water Filters ii Cat. No. 01029343
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Introduction 1
Cat. No. 01029343
Introduction
Read this Manual First
Before you operate the Culligan®CTM Water Filter, read this manual to become familiar with the device and its capabili-
ties.
The Culligan CTM Carbon and Depth Filters have been tested and certified by WQA against NSF/ANSI Standard 372 and
NSF/ANSI Standard 61 for Materials Safety Requirements only. Not certified for Contaminant Reductions and Structural
Integrity by WQA.
About this Manual
This manual:
• Familiarizes the operator with the equipment
• Explains installation and setup procedures
• Explains the various modes of operation
• Gives specifications and troubleshooting information
NOTE Refer to GBE Programming for Commercial Softeners and Filters (except for HFxN) Manual (P/N
01027295) for programming information. This manual can be obtained from your local dealer, CPort
(www.cport.culligan.com) under the Technical Service Tab or on the iPad Service Tech App.
Safe Practices
Throughout this manual there are paragraphs set off by special headings.
Notice
Notice is used to emphasize installation, operation or maintenance information which is important, but does not present
any hazard. For example,
NOTICE The nipple must extend no more than 1 inch above the cover plate.
Caution and Warning
Caution is used when failure to follow directions could result in damage to equipment or property. For example,
CAUTION! Disassembly while under water pressure can result in flooding.
Warning is used to indicate a hazard which could cause injury or death if ignored. For example,
WARNING! Electrical shock hazard! Unplug the unit before removing the timer mechanism or
cover plates!
The CAUTION and WARNING paragraphs are not meant to cover all possible conditions and situations that may occur. It
must be understood that common sense, caution, and careful attention are conditions which cannot be built into the equip-
ment. These MUST be supplied by the personnel installing, operating, or maintaining the system.
Be sure to check and follow the applicable plumbing codes and ordinances when installing this equipment. Local codes
may prohibit the discharge of sanitizing or descaling solutions to drain.
Use protective clothing and proper face or eye protection equipment when handling chemicals or power tools.
NOTE The Culligan CTM Water Filter is not intended for use with water that is microbiologically unsafe or of
unknown quality without adequate disinfection either before or after the system.
NOTE Check with your public works department for applicable local plumbing and sanitation codes. Follow
local codes if they differ from the standards used in this manual. To ensure proper and efficient
operation of the Culligan CTM Water Filter to your full satisfaction, carefully follow the instructions in
this manual.

2 Culligan® Culligan Top Mount (CTM) Water Filters 2 Cat. No. 01029343
Basic Principles
Activated Carbon Filter
Filters reduce unpleasant taste and odors from the water supply. In normal operation, the water passes through the multi-
port valve into the top of the media tank. As it flow down through the mineral bed, sediment in the water is filtered out and
objectionable dissolved gases are absorbed into the mineral. The clear water that leaves the bottom of the media tank
and goes into the service lines is free from many disagreeable taste and odors.
Depth Filter
Depth filters filter both heavy sediment and suspended matter from the water supply. In normal operation, the water
passes through the multi-port valve and into the top of the media tank. As the water flows down through the mineral bed,
sediment in the water is filtered out. The clear water that leaves the bottom of the media tank and flows through the ser-
vice lines is free from most sediment and suspended matter.
Filtering Process
To keep the filter operating properly, it is necessary to periodically remove the accumulated sediment from the mineral
bed. This done by a three-step process:
Backwash
The direction of flow through the tank is reversed, and the mineral bed is backwashed. This action expands and agitates
the bed, releasing the sediment that is then carried up and out to the drain.
Settle
The tank is allowed to be in an idle state to tallow the different types of media to stratisfy and settle. Water flow to the
drain will be present during this step.
Fast Rinse
A rapid downflow flush repacks the mineral bed and washes out traces of sediment not removed by backwash.
Backwash Frequency
Generally, backwash the CTM filter once per week. However, more frequent cleaning is recommended for water with high
turbidity. On carbon filters operated semi-automatically or automatically, backwash when the pressure drop across the
bed is 8–10 psi higher than a normal clean filter bed.
On depth filters with pressure gauges, the differential pressure across the filter can be monitored. A depth filter should be
cleaned when the differential pressure across the filter increases by 8–10 psi over the pressure differential across a clean
filter bed.

Performance Specifications 3
Cat. No. 01029343
Performance Specifications
Specifications for CTM Water Filters
In order to function properly, some operational parameters must be followed. They include:
1. An operating water pressure between 35 and 125 psi (241–862 kPa). If water pressure is greater than 80 psi, Cul-
ligan recommends following the IAPMO Uniform Plumbing code section 806.2 by installing a Pressure Regulating
Valve before the system. Operating on high presure for extended periods of time can increase the service frequency
of replacement parts. If water pressure can drop below the minimum water pressure, add a booster pump or operate
the pilot valve using compressed air to maintain a 35 psi (241 kPa) minimum operating pressure.
NOTE If an air compressor is used, it must be “oil free” and set at 10 psi greater than the maximum static
water pressure.
2. Operating temperature between 40° and 120°F or 4.4°–49°C.
3. Clear (non-turbid) water supplies (Less than 5 NTU).
4. Voltage of 120V, 50/60 Hz
Table 1. CTM Carbon Filter Flow Specifications.
Model 21 24 30 36
Organics Removal Flow (gpm) 12 16 25 35
Organics Removal Flow (pressure drop) 1.5 2 3 3
Dechlorination Flow (gpm) 24 31 49 71
Dechlorination Flow (pressure drop) 4 4 6 9
CV System 12 15.5 20 23.7
Backwash/Rinse Flow (gpm) 30 48 70 90
Table 2. CTM Depth Filter Flow Specifications.
Model 21 24 30 36
Continuous Service Flow (gpm) 24 32 50 71
Continuous Service Flow (Pressure Drop) 5 5 7 10
Maximum System Flow (gpm) 36 48 74 107
Maximum System Flow (Pressure Drop) 10 9 11 19
CV System 11.4 16 24.5 24.5
Backwash/Rinse Flow (gpm) 30 48 70 90

4 Culligan® Culligan Top Mount (CTM) Water Filters 4 Cat. No. 01029343
CTM Dimensions
Table 3. CTM Dimensions (inches)
Model 21 24 30 36
Overall Depth 21.5 24 30 36
Overall Width 23.8 25.2 30 36
Overall Height (A) 85.5 94 95.7 102
Plumbing Height (B) 74.1 82.6 84.3 90.6
Tank Height (C) 67 75.5 77.2 83.6
NOTE Allow a minimum of 12" above the overall system height for access into the top of tank(s).
Figure 1. Overview
Controller can be wall mounted
Drain
A
Drain
B
C
Inlet
4.75”
Outlet
11”
19.6”
Brine
13.3”
23.8”
NOTE Dimensions for all models

Installation 5
Cat. No. 01029343
Installation
Materials
The following are necessary components for installing a Filter.
*Not included with Timeclock models
Figure 2. Materials
Media
(Separate
Packaging,
See Table
4 on page
7)
Media Tank
(Boxed
Separately)
Vacuum
Breaker*
GBE Controller
(Boxed Separately)
Plumbing Adapter
(Sold Separately)
Flow Meter* (Comes
with Valve)
Eductor Throat
Drain Adapter
Drain Line
Flow Control
Distributor (Boxed
Separately)
Lubricant (Dow Corning 111/Molykote
111, Not Provided)
Pressure Relief*
GBE Front
Mounting Kit
Pilot Valve
Strainer
Sizing Kit

6 Culligan® Culligan Top Mount (CTM) Water Filters 6 Cat. No. 01029343
Locate Filter
1. Select a space that is level and allows a sufficient amount of room above and behind the filter tank(s) for ser-
vice access and plumbing supply and drain lines.
2. Floor surface—Choose an area with a smooth, solid and level floor capable of supporting the operating weight
of the softening system
3. Drain facilities—A nearby drain must be capable of handling the water filter discharge flow rates during the
backwash cycle of the regeneration process in addtion to the maximum flow rates of other equipment feeding
into the same drain. Refer to page 3 for information concerning the backwash flow rate.
Install Distribution System
CAUTION! Do not attempt to use any distribution part that is damaged. Doing so may create
operational problems and/or create a substantial risk of consequential damage not
covered by the product warranty.
Figure 3. Install Distribution System
Mark flush with tank opening
Media Tank
Remove distributor and cut square on mark
Deburr distributor pipe
Media Tank
Rest flat on the bottom
Distributor