CircuPool CORE35 - User Manual

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Saltwater Chlorination System - Installation and Operation Guide

Models: CORE15 CORE35 CORE55

SAFETY INSTRUCTIONS 3

INTRODUCTION 4

GETTING STARTED 4

CORE

-

SERIES Salt Systems

Advanced Swimming Pool Sanitation

Questions and Answers

C
cvegaAug 19, 2025
How to fix low chlorine in CircuPool CORE35 Water Filtration Systems?
- P
  pagejoseAug 19, 2025
  If your CircuPool Water Filtration System shows a 'Low or no chlorine residual' problem, it could be due to several reasons. You might need to increase the output level, especially as temperatures rise. Also, increase the run time to at least 1 hour per 10° of ambient temperature, ensuring 1.5-2x filter turnover. For heavy pool use or bad weather, activate Super CL mode or chemically shock the pool. Check for water chemistry issues like low chlorine stabilizer or salt, or phosphates/nitrates; consult a pool professional to ensure chemicals are in range. Inspect and clean the cell if it's dirty or clogged. Verify sufficient water flow by inspecting the flow switch. Finally, ensure the system is turned on; if not, refer to the “No Power” section.
N
Nathan RogersAug 21, 2025
What to do if the Clean Cell LED is on in CircuPool CORE35?
- R
  rossdebbieAug 21, 2025
  If the Clean Cell LED is illuminated on your CircuPool Water Filtration System, it indicates that the cell requires cleaning. Also, verify the salinity. If the problem persists even after cleaning, the cell may need to be replaced due to reduced efficiency.
J
Jeanne AllenAug 23, 2025
How to troubleshoot the 'No Flow' LED on CircuPool Water Filtration Systems?
- V
  Valerie WilliamsAug 23, 2025
  If the No Flow LED is on in your CircuPool Water Filtration System, it means there's insufficient water flow or air bubbles. Check the water level, look for pump cavitation, and inspect for air or blockages in the plumbing, valves, and seals. Clean the filters and strainers. Additionally, check for any obstructions or buildup around the flow switch paddle, and dismantle the cell to remove any debris to ensure the flow switch paddle moves freely.
A
Anne OconnellAug 26, 2025
How to fix a water leak in CircuPool CORE35 Water Filtration Systems?
- D
  David MatthewsAug 26, 2025
  If you notice a water leak in your CircuPool Water Filtration System, ensure the O-rings are clean and in good condition. Inspect the threads for damage and ensure that each screws back on without resistance, checking for cross-threading or misaligned pipes.
D
donna02Aug 28, 2025
Why is the Chlorine Output LED blinking on my CircuPool Water Filtration Systems?
- E
  ericbrownAug 28, 2025
  If your CircuPool Water Filtration System displays a blinking Chlorine Output LED, this is normal after pressing the +/- buttons or during low temperatures.
C
crawfordreginaAug 30, 2025
How to prevent mineral buildup on CircuPool Water Filtration Systems cell?
- J
  Julian StoneAug 30, 2025
  If your CircuPool Water Filtration System's cell frequently has mineral buildup, it's due to imbalanced water chemistry. Ensure that your Saturation Index is at or near zero.
D
dtylerSep 1, 2025
Why does my CircuPool CORE35 Water Filtration Systems cell never have mineral buildup?
- C
  Charles ContrerasSep 2, 2025
  If your CircuPool Water Filtration System's cell never or rarely has mineral buildup, the water may be corrosive due to imbalanced water chemistry. Ensure that your Saturation Index is at or near zero.
L
Lisa HuntSep 4, 2025
What does the 'Cold Water' LED mean on CircuPool CORE35 Water Filtration Systems?
- K
  Kimberly MorrisSep 4, 2025
  If the Cold Water LED is on in your CircuPool Water Filtration System, it means Winter Mode is activated. No further action is required.
W
washingtonkaitlynSep 6, 2025
Why doesn't the chlorine output reach 100% on CircuPool CORE35?
- C
  christopher50Sep 6, 2025
  If the Chlorine Output level on your CircuPool Water Filtration System does not reach 100%, it may be because the cell is dirty or clogged; clean the cell. It could also be due to a damaged cell or cell cable; in this case, contact Customer Support.
M
Mr. David WallSep 8, 2025
What does it mean when the 'Cell Life Low' LED is on in CircuPool CORE35?
- K
  Karina DavisSep 8, 2025
  If the Cell Life Low LED is on for your CircuPool Water Filtration System, and salinity is within range, the system has likely reached the end of its lifespan. The cell must be replaced once the “Cell Life Low” LED is on and the Chlorine Output setting won’t reach 100%.

Summary

Important Safety Instructions

Safety Precautions and Electrical Warnings

Critical safety guidelines, electrical hazards, and warnings for installation and use.

Core System Overview

System Components and Functions

Water Chemistry & Salt Levels

Salt Level Requirements and Calculations

Adding Salt

Salt Addition Procedure and Best Practices

Operation

How the CircuPool CORE System Generates Chlorine

Initial System Start-up Procedure

Step-by-step guide for the first-time operation and setting chlorine output.

Using the Control Module

Control Panel Buttons and Functions

System Status Indicators and Alerts

Explanation of various LED lights indicating system status, errors, and warnings.

Maintenance

Electrolytic Cell Cleaning Procedure

Detailed steps for cleaning mineral buildup from the cell using acid.

Installation

System Installation Overview and Placement

General guidelines for installing the unit, its location, and important precautions.

Connecting to Plumbing

Plumbing Connection Steps and Requirements

Detailed instructions for cutting pipe, using templates, and connecting plumbing.

Connecting to Power

Electrical Connection Methods and Safety

Guidance on connecting the unit to power via GFCI or hardwiring, with safety notes.

Installation Checklist

Final Installation Verification Points

Troubleshooting

Common System Malfunctions and Solutions

Troubleshooting for low chlorine, no power, and common LED status light issues.

Advanced Troubleshooting and Component Issues

CircuPool Limited Warranty

Warranty Coverage Schedule and Terms

CircuPool CORE35 Specifications

General

Brand	CircuPool
Model	CORE35
Category	Water Filtration Systems
Language	English

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