King Technology Prevail Cycler 170 User Manual

King Technology Prevail Cycler 170

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Prevail Cycler

Instruction Manual

Chlorine Pool-Care System

for Pools up to 25,000 Gallons

Customer Service 800-222-0169

kingtechnology.com

To minimize the risk of serious injury, death or

damage, before installing or first using this

equipment, read Instruction Manual and all safety

labels and follow all safety instructions and

precautions. Save manual for future reference.

WARNING

Ver la versión en español de este manual en kingtechnology.com/knowledge-center/manuals-diagrams

Table of Contents

Questions and Answers:

K
Kelly ThomasAug 4, 2025
What to do if my King Technology Swimming Pool Filter is under chlorinating with the Prevail Pool Pack?
- A
  Ashlee NicholsAug 4, 2025
  If your King Technology Swimming Pool Filter isn't providing enough chlorination with the Prevail Pool Pack, ensure chlorine tablets are present and the system is correctly installed. If the chlorine reading has been below 1.0 ppm for over a day, shock the pool. Also, ensure the pump runs for at least 6 hours on high speed (40 gpm or higher); otherwise, bleed air from the back knob each time the cap is opened. If the reading is still low after these steps, increase the dial setting by one increment daily until the correct reading is achieved.
C
colleenbrooksAug 11, 2025
How to fix cloudy water with King Technology Swimming Pool Filter?
- B
  Bruce BrownAug 11, 2025
  If your King Technology Swimming Pool Filter is causing cloudy water, ensure adequate filtration time and a free chlorine level between 1.0 and 3.0 ppm. Clean the filter, skimmer, and pump, ensuring they are properly balanced. Shock the water to eliminate any organic matter buildup. Also, make sure the circulation time is adequate by increasing pump run time and ensure the pool has a clean filter.
D
Danny CastroAug 19, 2025
Why does my King Technology Swimming Pool Filter make the water turn color?
- P
  Patrick SmithAug 19, 2025
  If your King Technology Swimming Pool Filter is leading to colored water, it might be due to algae formation or oxidized metals. Shock the pool, increase circulation time if needed, and clean the filter if algae may be trying to form. If metals in the water may have been oxidized, have the pool water tested and consult your pool dealer about metal control products.
K
kimberlybushAug 27, 2025
What to do if algae forms in my pool with King Technology Swimming Pool Filter?
- N
  Nicholas RamosAug 27, 2025
  If algae forms in your pool when using a King Technology Swimming Pool Filter, use an algaecide according to the bottle's directions and frequently brush the pool sides. Clean the filter and shock the pool daily with chlorine until the water becomes clear.

King Technology Prevail Cycler 170 Specifications

General

Brand	King Technology
Model	Prevail Cycler 170
Category	Swimming Pool Filter
Language	English

Summary

Prevail System Overview

Prevail Cycler 170 Description

Water treatment center controlling water flow for pools up to 25,000 gallons.

Prevail Pool Pack 70.5C Description

Prefilled chlorine tablets fitting inside the Prevail Cycler for chlorine sanitation.

Safety and Information

General Operating Notes

Key principles for safe and proper operation of the Prevail Cycler.

Signal Words and Pictograph Explanations

Explanations of hazard signal words and safety pictographs used in the manual.

Cycler Safety Label

Fire, Explosion, and Pressure Hazards

Critical warnings and precautions for fire, explosion, and pressure risks associated with the cycler.

Installation Tips

Performance Tips and Requirements

Tips to ensure proper performance and special installation requirements for various pool types.

Installation Diagrams

Visual guides for high flow, in-floor cleaner, and pool/spa combination installations.

Filter Flex-Hose Installation

Base Flex-Hose Installation

Hard-Plumbed Installation

Step 1: Preparing the Pool

Circulation, Filter, and Metal Checks

Ensuring adequate circulation, cleaning the filter, and checking for pool metals.

Water Balance Guidelines

Key parameters for pool water balance including pH, alkalinity, and chlorine levels.

Step 1 Continued: Water Balance

Testing and Adjusting Total Alkalinity and pH

Detailed steps for testing and adjusting Total Alkalinity and pH.

Testing and Adjusting Water Hardness and Stabilizer

Steps for testing and adjusting Water Hardness and stabilizer levels.

Step 2: Putting the System to Work

Loading the Prevail Pool Pack

Instructions for safely inserting and securing the Prevail Pool Pack into the Cycler unit.

Step 3: Setting the Control Dial

Initial Dial Setting Guide

Guide to setting the control dial based on pool size, pump size, and run time.

Adjusting Dial for Chlorine Levels

Process for testing and adjusting the dial for optimal free chlorine levels.

Step 4: Routine Pool Care

Filtration and Water Testing

Running filtration, testing pH/alkalinity, and maintaining free chlorine levels.

Shocking the Pool

Guidelines for shocking the pool weekly or as needed with chlorine or non-chlorine shock.

Winterizing the Prevail Cycler

Troubleshooting

Water Quality Issues

Solutions for cloudy water, water color changes, algae, and chlorination problems.

Parts List

Included and Replacement Parts

Lists of parts included with the Prevail Cycler and available replacement parts.

Cycler Maintenance

O-Ring and Knob Replacement

Step-by-step guides for replacing O-rings on the control dial and cap, and replacing knobs.

Limited One-Year Warranty

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