Clack Water Softener Manual: A Comprehensive Guide
This manual provides detailed instructions for Clack water softeners, covering installation, operation, maintenance, and troubleshooting.
It ensures optimal performance and longevity of your system, backed by a five-year warranty.
What is a Clack Water Softener?
A Clack water softener is a meticulously engineered device designed to effectively remove hardness minerals – primarily calcium and magnesium – from your water supply. These systems are not a complete brand of softener, but rather utilize Clack Corporation’s highly regarded control valves and components integrated into systems built by various manufacturers.
Clack softeners are known for their durability, utilizing top-quality North American components and offering both economical two-way regeneration and advanced on-demand or time clock regeneration modes. The WS1 control valve, a core component, directs and regulates all softening cycles. They are a popular choice for those seeking long-lasting performance and reliable water treatment, offering full 3/4-inch flow throughout the system.
Clack Corporation: History and Overview
Clack Corporation, a Wisconsin-based company, has been a prominent force in the water treatment industry for over 50 years. While not widely known as a consumer brand, Clack is a leading manufacturer of components used within water softening systems produced by numerous other companies. They specialize in automatic valves, particularly the renowned WS1 series – TC, EI, and CI models – which are considered state-of-the-art in control valve technology.
The company focuses on providing high-quality, durable parts, enabling manufacturers to build reliable and efficient water softeners. Clack’s commitment to North American components and innovative designs has solidified its position as a trusted supplier to the water treatment industry, ensuring consistent performance and longevity for end-users.
Key Components of a Clack Water Softener System
A Clack water softener system comprises several essential components working in harmony. The WS1 Control Valve is central, directing and regulating all softening cycles. Connected to this is the Resin Tank, housing the Resin Beads responsible for ion exchange – removing hardness minerals. Equally important is the Brine Tank, which stores the salt solution used to regenerate the resin beads.
These systems feature full 3/4-inch flow throughout, maximizing water pressure. Clack offers both two-way regeneration models for economical operation and options for either Time Clock or On-Demand regeneration modes, providing flexibility and efficiency. High-quality North American components ensure durability and reliable performance.
The WS1 Control Valve: Core Functionality

The WS1 Automatic Valve is the brain of the Clack water softener, a state-of-the-art control center. It meticulously directs and regulates every stage of the water softening process, ensuring efficient operation. This valve manages cycles like backwash, brine draw, rinse, and service, all crucial for removing hardness minerals.

Available in TC, EI, and CI configurations, the WS1 offers versatility. It seamlessly transitions between these cycles based on the chosen regeneration mode – Time Clock or On-Demand. Its robust design and precise control contribute to the system’s longevity and high performance, making it a cornerstone of Clack’s reputation for quality.
Resin Tank and Resin Beads Explained
The resin tank is a central component, housing thousands of tiny, specialized resin beads. These beads are the workhorses of the softening process, responsible for attracting and capturing hardness minerals like calcium and magnesium. Constructed from polystyrene, these beads possess a negative charge, drawing in positively charged mineral ions.
During regeneration, a brine solution (saltwater) flushes through the tank, replenishing the beads with sodium ions. This exchange effectively ‘recharges’ the resin, allowing it to continue removing hardness. The tank’s size dictates the system’s capacity, influencing how much water can be softened between regeneration cycles. Maintaining resin bead quality is vital for optimal performance.
Brine Tank: Purpose and Maintenance
The brine tank holds a highly concentrated saltwater solution crucial for the regeneration process. During regeneration, this brine is drawn into the resin tank, replenishing the resin beads with sodium ions, which then attract hardness minerals. Maintaining an adequate salt level is paramount for effective softening; typically, rock salt or solar salt is used.
Regular maintenance involves periodically checking the salt level and removing any salt bridges – hard crusts that can form on the surface, preventing the salt from dissolving. It’s also important to ensure the brine tank remains clean and free of debris. A properly maintained brine tank ensures consistent water softening and extends the life of your Clack system.

Installation and Setup
Proper installation is key for optimal performance. Choose between professional installation for guaranteed setup or a DIY approach, following the manual’s step-by-step guidance carefully.
Professional Installation vs. DIY
Deciding between professional installation and a do-it-yourself (DIY) approach for your Clack water softener depends on your plumbing experience and comfort level. Professional installation, while incurring a labor cost, guarantees correct setup, adherence to local plumbing codes, and often includes initial system testing. This minimizes potential issues like leaks or improper regeneration.
A DIY installation, however, can save money if you possess adequate plumbing skills and are comfortable connecting water supply lines, drain lines, and electrical components. The Clack manual provides detailed step-by-step instructions, but meticulous attention to detail is crucial. Incorrect installation can void the warranty and lead to system malfunction. Carefully assess your abilities before choosing the DIY route, and always prioritize safety by shutting off the water supply before beginning any work.
Initial System Setup: Step-by-Step
Before initial operation, several steps ensure optimal performance of your Clack water softener. First, carefully inspect all components for shipping damage. Next, connect the system to a water supply, ensuring proper pressure. Following this, establish a drain line connection, adhering to local plumbing codes.
Crucially, add water to the brine tank, then add rock salt – do not use ice melt! Program the control valve (WS1) with your local water hardness information; this dictates regeneration frequency. Initiate a manual regeneration cycle to flush the system and prepare the resin beads. Finally, verify all connections for leaks and monitor the initial regeneration process to confirm proper functionality. Refer to the detailed diagrams within the manual for visual guidance throughout this setup.
Connecting to Water Supply and Drain Lines
Proper connection to your water supply and drain lines is critical for effective operation. Begin by shutting off the main water supply. Connect the inlet to the incoming water line, utilizing appropriate fittings and ensuring a watertight seal. The outlet connects to your home’s plumbing, delivering softened water.
For the drain line, a dedicated connection is recommended, avoiding connection to sewer lines to prevent back-siphoning. Ensure the drain line has an air gap to comply with plumbing codes. Use a ¾-inch inner diameter flexible hose for the drain line, routing it to a suitable floor drain or standpipe. Double-check all connections for leaks after restoring water supply, and verify proper drainage during the initial regeneration cycle.

Operation and Maintenance
Regular maintenance, including understanding regeneration cycles and occasional manual backwashing, is essential for maintaining peak performance and extending the lifespan of your Clack system.
Understanding Regeneration Cycles
Clack water softeners utilize regeneration cycles to replenish the resin beads with sodium or potassium ions, ensuring continued water softening capabilities; These cycles typically involve backwash, brine draw, slow rinse, and fast rinse phases. Backwash removes sediment and debris, while brine draw pulls salt solution from the brine tank to recharge the resin.
The slow rinse phase removes excess brine, and the fast rinse prepares the system for normal operation. Regeneration frequency depends on water hardness and usage, with options for time clock or on-demand regeneration. On-demand systems regenerate based on actual water usage, maximizing efficiency and salt consumption. Understanding these cycles is crucial for optimal performance and troubleshooting potential issues, ensuring consistently soft water for your home.
How to Manually Backwash a Clack System
Manually backwashing your Clack system is a vital maintenance procedure to remove accumulated sediment and iron, maintaining optimal performance. First, bypass the softener and shut off the water supply. Then, locate the manual regeneration dial on the WS1 control valve. Rotate the dial to the “Backwash” position and allow the cycle to run for approximately 3-5 minutes, observing the waste line for clear water.
Next, advance the dial to “Rinse” and run for another 2-3 minutes. Return the dial to the “Service” position and slowly restore the water supply, checking for leaks. Steve Parker demonstrates this process effectively. Regular backwashing, typically every month or as needed, extends the life of the resin bed and ensures consistently soft water.

Salt Usage and Refilling the Brine Tank
Maintaining adequate salt levels in the brine tank is crucial for successful water softening. Clack systems require high-quality salt – rock salt, solar salt, or evaporated salt – avoiding salts with red or orange dyes. Salt usage varies based on water hardness and household consumption, but regular monitoring is key.
Typically, refill the brine tank when the salt level reaches approximately one-third full. Ensure the salt is free-flowing and doesn’t form a solid block. A properly maintained brine tank ensures sufficient brine solution for effective resin regeneration. Avoid overfilling, as this can cause bridging and prevent proper dissolution. Consistent salt levels guarantee consistently soft water throughout your home.

Troubleshooting Common Issues
Addressing problems like low water pressure, hard water post-regeneration, or error codes is simplified with this section, ensuring optimal softener function and water quality.
Low Water Pressure: Causes and Solutions
Reduced water pressure after installing your Clack water softener can stem from several factors. A primary cause is often a partially clogged resin tank or brine line, restricting water flow. Sediment buildup within the system, or even a closed valve during initial setup, can also contribute to this issue.
To diagnose the problem, first, verify that all valves are fully open. Next, manually backwash the system (refer to the ‘Operation and Maintenance’ section) to dislodge any accumulated sediment. Inspect the brine line for kinks or blockages. If the pressure remains low, check the inlet water pressure to the softener; it should meet the manufacturer’s specifications.
Persistent low pressure might indicate a failing control valve or a more significant blockage requiring professional attention. Regularly scheduled maintenance, including resin cleaning, can prevent future pressure drops and ensure consistent water flow throughout your home.
Hard Water After Regeneration: Diagnosis
Experiencing hard water symptoms – like soap scum or mineral deposits – after a regeneration cycle suggests a problem with the softening process. Several issues could be at play, starting with insufficient salt levels in the brine tank. Ensure adequate salt is present and that the salt isn’t bridged or clumped, preventing proper brine draw.
Another common cause is a malfunctioning control valve, specifically issues with the brine draw or rinse cycle. Inspect the valve for error codes (see ‘Error Codes and Their Meanings’). A depleted or exhausted resin bed also leads to hard water; consider resin regeneration or replacement if the bed is old.
Finally, verify the correct regeneration settings are programmed into the WS1 control valve. Incorrect settings can lead to insufficient regeneration time or frequency. A professional assessment may be needed to pinpoint complex valve or resin issues.
Error Codes and Their Meanings
The Clack WS1 control valve utilizes error codes to diagnose system malfunctions. Understanding these codes is crucial for effective troubleshooting. A “Low Salt” error indicates insufficient salt in the brine tank, requiring immediate refilling. “Brine Draw Error” suggests a problem with the valve drawing brine from the tank – check for blockages or a faulty valve component;
“Flow Error” typically points to issues with water flow through the system, potentially caused by a clogged filter or kinked water lines. A “Motor Fault” code signals a problem with the control valve’s motor, often necessitating professional repair or replacement. Consult the full Clack manual for a comprehensive list.
Remember to record the error code before attempting any repairs, as this information will be valuable when contacting Clack Corporation for support.

Warranty Information

Clack water softeners are backed by a comprehensive five-year manufacturer’s warranty, covering defects in materials and workmanship for peace of mind.
Clack Water Softener 5-Year Warranty Details
The Clack Corporation provides a robust 5-year warranty on all water softener systems, commencing from the original date of purchase. This warranty specifically covers defects in materials and workmanship under normal use and proper maintenance, as outlined in the installation manual. It guarantees repair or replacement of defective parts, including the WS1 control valve and the resin tank, at Clack’s discretion.
However, the warranty does not cover damage resulting from improper installation, misuse, abuse, neglect, freezing, acts of God, or the use of non-approved components. Regular maintenance, such as salt replenishment and periodic cleaning, is the owner’s responsibility. Warranty claims require proof of purchase and a detailed description of the issue. Shipping costs for returned parts are typically the responsibility of the customer.
Contacting Clack Corporation for Support
For technical assistance, warranty claims, or general inquiries, Clack Corporation offers multiple avenues for support. Their dedicated customer service team can be reached via phone during business hours, providing expert guidance on installation, operation, and troubleshooting. Detailed product manuals and frequently asked questions are readily available on the official Clack Corporation website, offering self-service resources.
You can also connect with Clack through email, submitting detailed descriptions of your issue for prompt assistance. When contacting support, having your softener’s model number and date of purchase readily available will expedite the process. Clack also maintains a network of authorized dealers and service technicians who can provide on-site support and repairs. Their website provides a dealer locator tool to find a qualified professional near you.

Advanced Features & Models
Clack softeners offer two-way regeneration for efficiency, alongside on-demand and time clock modes, providing customizable operation and optimal water softening performance.
Two-Way Regeneration: Economical Options
Clack water softeners distinguish themselves with their innovative two-way regeneration process, a significant advancement in water softening technology. Unlike traditional systems that utilize a single drain for both brine discharge and rinse water, two-way regeneration separates these functions. This separation dramatically reduces water waste, contributing to lower utility bills and a more environmentally conscious operation.
During the regeneration cycle, the system first expels the spent brine solution, followed by a separate rinse phase. This prevents the mixing of highly concentrated brine with clean water, maximizing efficiency. The result is a substantial decrease in overall water consumption, making two-way regeneration a particularly attractive option for homeowners seeking cost savings and sustainable practices. Clack’s commitment to efficiency is evident in this feature.
On-Demand vs. Time Clock Regeneration Modes
Clack water softener systems offer flexibility in regeneration control, providing both time clock and on-demand modes to suit varying water usage patterns. Time clock regeneration initiates the cycle at a pre-set schedule, typically based on days or times, ensuring consistent softening regardless of water consumption. This is ideal for predictable usage.
However, on-demand regeneration is a more intelligent approach. Utilizing a sophisticated control valve, it monitors actual water usage and initiates regeneration only when the resin bed’s capacity is nearing exhaustion. This minimizes water and salt waste, offering significant cost savings. Clack’s WS1 valve expertly manages this process. Choosing the optimal mode depends on household needs; on-demand is generally preferred for variable water use, maximizing efficiency and resource conservation.