Bayrol Pool Relax Chlorine

Questions and Answers

T
Tiffany VillarrealAug 19, 2025
Why does my Bayrol Water System show a different pH than my control measurement?
- O
  ortegaandrewAug 19, 2025
  The pH control measurement and the device display may differ due to several reasons. It could be that the system calibration is faulty or has not been performed for a long time, so recalibrate the system. Another reason might be faulty input of calibration values, so repeat the calibration. The electrode might be dirty or faulty, so clean the electrode in 5-10 % hydrochloric acid and rinse with distilled water; if calibration is still not possible, replace it. Humidity in the cable combination can also cause this issue, so dry or replace the cable combination. Lastly, the measuring amplifier could be faulty, requiring device repair or replacement.
C
Casey ValenzuelaAug 21, 2025
Why is the dosing pump not working on my Bayrol Water System even though the device shows a dosing rate above 0%?
- S
  Susan ColemanAug 22, 2025
  If the dosing pump isn't working despite a non-zero dosing rate displayed on the device, it could be due to a blown dosing pump fuse. In this case, replace the fuse (1 A slow). Alternatively, the dosing relay might be faulty, requiring its replacement. Finally, the dosing pump itself could be faulty, necessitating its replacement.
S
Stephen StevensAug 25, 2025
Why is my Bayrol Water System dosing pump running, but there's no pH correction?
- C
  cooperoliviaAug 25, 2025
  If your dosing pump is running but there is no pH correction, the container might be empty, so replenish the pool care product. Alternatively, the dosing pump might have drawn air and is no longer dosing, in which case you should purge the air from the dosing head.
G
Gina LynnAug 26, 2025
What to do if the pH value of my Bayrol Water System is fluctuating around the setpoint?
- M
  Mackenzie SolomonAug 26, 2025
  If the pH value is fluctuating around the setpoint, the dosing rate of the pH control might be too high. To resolve this, set the p-range to a higher value to reduce the dosing rate. Additionally, reducing the minimum switch-on time can prevent overdosing.
E
erin75Aug 28, 2025
Why is my Bayrol Water System dosing pump running, but there's no redox correction?
- K
  Kelly BondAug 28, 2025
  If your dosing pump is running but there is no redox correction, the container might be empty, so replenish the pool care product. Alternatively, the dosing pump might have drawn air and is no longer dosing, in which case you should purge the air from the dosing head.
R
Rodney Schwartz DDSAug 30, 2025
Why is my Bayrol Water System showing a dosing rate of 0% when there's a deviation from the setpoint?
- W
  Wayne SchmidtAug 30, 2025
  A 0% dosing rate display despite a deviation from the setpoint can occur if dosing is blocked by an alarm such as flow, level, or dosing time. To fix this, remove the cause of the alarm and then quit the alarm. Another potential cause is the power-on delay still running; wait for the power-on delay to end.
K
Karen CamposSep 1, 2025
Why is my Bayrol Water System's redox potential not equal to the control measurement?
- C
  Charles NicholsonSep 1, 2025
  If the redox potential isn't equal to the control measurement, it could be due to several reasons. The system calibration may be faulty or hasn't been performed recently, so recalibrate the system. It could also be due to faulty input of calibration values, so repeat the calibration. Another cause might be a dirty or faulty electrode; clean it in 5-10% hydrochloric acid and rinse with distilled water, replacing it if calibration remains impossible. Humidity in the cable combination can also cause this, so dry or replace the cable combination. Finally, the measuring amplifier might be faulty, requiring device repair or replacement.
Y
Yvette GilesSep 3, 2025
What to do if the redox potential of my Bayrol Water System is fluctuating around the setpoint?
- R
  romeroaaronSep 3, 2025
  If the redox potential is fluctuating around the setpoint, the dosing rate of the redox control might be too high. To resolve this, set the p-range to a higher value to reduce the dosing rate. Additionally, reducing the minimum switch-on time can prevent overdosing.
R
Robert BeckerSep 5, 2025
Why doesn't my Bayrol Water System start dosing at the expected time?
- M
  Monica ThompsonSep 5, 2025
  If the device doesn't start dosing at the expected time, it could be due to dosing being blocked by an alarm (flow or level alarm). To resolve this, remove the cause of the alarm and then quit the alarm. Alternatively, the date and time settings of the measuring and control devices might be incorrect, so set the date and time on the customer level.
D
Denise RodriguezSep 7, 2025
Why does the pH value of my Bayrol Water System differ from the setpoint over an extended period?
- H
  Heather HowellSep 8, 2025
  If the pH value differs from the setpoint over an extended period, the dosing rate of the pH control may be too low. To correct this, set the p-range to a lower value to increase the dosing rate. Also, increasing the minimum switch-on time results in a more rapid approach of the setpoint.

Summary

Introduction

Pool Relax Chlorine

Describes the Pool Relax Chlorine variant for measuring and controlling pH/redox, and dosing chemicals.

Pool Relax Bromine

Describes the Pool Relax Bromine variant for measuring and controlling pH/redox, and dosing chemicals.

Pool Relax Oxygen

Describes the Pool Relax Oxygen variant for measuring and controlling pH/redox, and dosing chemicals.

Web module

Information on connecting the Pool Relax system to the BAYROL Web portal for remote access.

Flockmatic

Information on using Flockmatic® as an option for water clarity and particle removal.

Identification of safety information

Safety information

Explains hazard identification, description, consequences, and necessary measures for safety hazards.

Miscellaneous markings

Describes important notices and informational symbols used in the manual.

General safety information

Dangerous system settings

Warns about hazards from changing system settings without proper qualification or documentation.

Unexpected start

Alerts to the risk of unexpected operation when power is supplied without proper preparation.

Potential overdosing of maintenance products

Highlights the risk of overdosing due to sensor failure or other errors.

Gaseous chlorine produced from dosing in standing water

Warns about the danger of chlorine gas formation if dosing occurs without circulation.

Use of non-BAYROL products

Advises against using non-BAYROL products to avoid damage and warranty loss.

Damage of the touch screen

Warns about potential damage to the touch screen from improper use.

Compliance with safety class

Emphasizes sealing the unit properly to prevent moisture ingress and damage.

New Functions

Use of new functions

Advises caution when using new or undocumented functions, stressing the need for profound understanding.

User qualification

Insufficient personnel qualification

Highlights hazards associated with unqualified personnel operating the system.

User Qualification Definitions

Defines roles like Instructed Person, Trained User, Trained Specialist, Electrical Specialist, and IT Specialist.

Default access codes

Unauthorised access possible from using known access codes

Warns about the risk of unauthorized access leading to dangerous configurations and recommends changing default codes.

Installation of Pool Relax

General Information

General guidelines for installation, emphasizing safety regulations and electrical device installation rules.

Selecting the Installation Location

Provides criteria for choosing a suitable installation location for the Pool Relax unit.

Mounting Pool Relax on the Wall

Step-by-step instructions for mounting the Pool Relax unit on a wall, including drill holes and screw attachment.

Connecting Hoses and Sensors

Details on connecting pressure lines, suction lines, flow switches, and temperature sensors.

Electrical Connection

Covers electrical connection requirements, voltage limits, and safety practices for plug-in connections.

Double Dosing Pump Lock

Explains the safety feature of a double pump lock and its reliance on the flow switch.

Earthing the Measurement Cell

Details the importance and procedure for earthing the measurement cell for safety.

Installation Plans

General introduction to the installation diagrams provided for different Pool Relax variants.

Pool Relax Chlorine installation

Illustrates the plumbing and connections for installing the Pool Relax Chlorine system.

Pool Relax Oxygen installation

Illustrates the plumbing and connections for installing the Pool Relax Oxygen system.

Pool Relax Bromine installation

Illustrates the plumbing and connections for installing the Pool Relax Bromine system.

Installation of Pool Relax with pH-Plus

Instructions for installing the system using pH-Plus instead of pH-Minus.

Important notice

Specific instruction that pH-Plus must be fed directly into the circulating line, not the measurement cell.

Accessories for pH-Plus Installation

Lists required accessories for installing the pH-Plus system.

Installation Steps for pH-Plus

Details the steps for installing the pH-Plus system, including saddle clamp and injection piece.

Installation example for Pool Relax Chlorine

Shows a diagram of a Pool Relax Chlorine installation with pH-Plus.

Putting into Operation

Outlines the steps and conditions necessary before putting the system into operation.

Pool Relax Chlorine

Detailed procedure for putting Pool Relax Chlorine into operation, including pH and chlorine adjustment.

Pool Relax Oxygen

Technical requirements for putting Pool Relax Oxygen into operation, focusing on hydraulics and filtering.

Measures required in addition to dosing with Bayrosoft

Lists additional measures like shock chlorination and flocculation for Bayrosoft® systems.

Tips and tricks regarding inadequate water quality (Bayrosoft)

Provides advice on troubleshooting water quality issues with Bayrosoft®.

How can the water quality be corrected?

Offers solutions for cloudy or slippery pool water issues.

Procedure for Putting into Operation (Bayrosoft)

Steps for putting the Bayrosoft® system into operation, including pH adjustment and shock chlorination.

Pool Relax Bromine

Procedure for putting Pool Relax Bromine into operation, including pH and bromine adjustment.

Maintenance of Pool Relax

General attention notice for maintenance.

Maintenance Plan

Monthly maintenance

Tasks to be performed monthly for system maintenance.

Quarterly maintenance

Tasks to be performed quarterly for system maintenance.

Annual maintenance

Tasks to be performed annually for system maintenance.

Dosing Pump Hoses

Hose change

Detailed steps for replacing the dosing pump hose.

Hose replacement parts

Lists part numbers and applications for replacement hose sets and pump hoses.

NOTE!

Important notes regarding hose installation and securing.

Electrode Information

Electrode Wear

Indicators for worn electrodes and their impact on calibration.

Electrode Care

Guidelines for handling and cleaning pH and redox electrodes to maintain performance.

Calibrating Electrodes

Notes on electrode calibration procedures and examples.

Decommissioning; Winter Storage of the System

Operating Pool Relax

Overview of Features

Lists key features of the Pool Relax system, including display, operation, and control capabilities.

Display and Operation

Details the touch screen interface, menu structure, and language options.

Measuring and control

Describes the proportional control, parameter programming, and calibration options.

Safety functions

Outlines the system's safety features like alarms, blocking, and double pump lock.

HAZARD! Emission of chlorine gas

Critical warning about chlorine gas emission from contact between Chloriliquide and pH-Minus.

Operation

Touchscreen

Explains the touch screen operation, care, and potential damage from improper use.

Direct selection buttons

Describes the function of Menu, Esc, Home, and Help buttons for navigation.

Entering data

Method for Entering Data

Illustrates the process of navigating menus and selecting values to change.

Commissioning menu

Commissioning Steps

Details the sequential steps involved in commissioning the Pool Relax system.

Operating Pool Relax

Dosing parameters O2

Configuration of main dosing parameters for the O2 automatic dosing system.

Calibration

Instructions for calibrating pH and redox measurements.

Control parameters pH

Setting main parameters for pH control, including thresholds and p-range.

pH adjustment

Options for automatic or manual adjustment of the pool water pH value.

Manual dosage mV (CI)

Procedure for adjusting chlorine content and determining the mV value.

Control parameters mV (redox)

Setting main parameters for redox control, including setpoint and thresholds.

Software

Menu structure

Explains the two access levels (Customer and Service) and the entry menu for system functions.

Schematic diagram of menu structure

Provides a visual overview of the Pool Relax menu tree and key functions.

Software

Commissioning

Describes the commissioning process and initial setup steps.

Home View

Overview of the home display showing measurement and status information.

Entry Menu

Lists the functions accessible from the entry menu.

Help page

Explains how to access context-sensitive help for parameters and menus.

Main Menu (Service; Customer)

Details the contents of the main menus accessible via service or customer codes.

Default Login Codes

Provides the default access codes for customer and service menus.

Software

Measuring & Control

Details the parameters and calibration options for pH, mV (Redox), O2, and Temperature.

Calibration

Explains the calibration parameters and procedures for pH, mV, and Temperature.

Software

Alarm & Controller Settings

Covers settings for alarms and general controller configurations like language and touch panel.

Manual Dosage

Options for manual dosing of pH, mV, O2, and shock chlorination.

Software

Plug-in Modules

Configuration of switch outputs and web portal access.

Service Functions

Access to software updates, default values, care programs, service intervals, and commissioning.

Software

Login

Explains the login procedure for accessing configuration menus using customer or service codes.

Direct Menu Links in Home Menu

Describes how to use direct links from the home menu to access specific functions.

Login with direct links

Explains login requirements when using direct links from the home menu.

pH Control

View in the home display

Shows how pH measurement and status are displayed on the home screen.

Configuration of pH Control

Details the configuration of pH control parameters like setpoint, alarms, and p-range.

Setpoint, alarm limits, p-range

Explains how to set the desired pH, alarm thresholds, and the p-range for the controller.

pH control settings

Table detailing parameters for pH control, including setpoint, alarms, dosing times, and dead zone.

pH electrode calibration

Information on the necessity and procedure for calibrating the pH electrode.

Procedure for the 1-point pH calibration

Step-by-step guide for performing a 1-point pH calibration using buffer solution or pool water.

Calibration Data; Results

Displays calibration input values and resulting electrode slope and offset parameters.

mV (redox) control

View in the home display

Shows how mV (redox) measurement and status are displayed on the home screen.

Setpoint, limits, p-range

Explains how to configure setpoint, alarm limits, and p-range for redox control.

mV (redox potential) settings

Details parameters for mV (redox) control, including setpoint, alarms, dosing times, and dead zone.

Redox electrode calibration

Information on the necessity and procedure for calibrating the redox electrode.

Procedure for the 1-point redox calibration

Step-by-step guide for performing a 1-point redox calibration.

Temperature measurement

View in the home display

Shows how temperature measurement is displayed on the home screen.

Temperature configuration

Configuration of temperature alarm thresholds and sensor type.

Automatic dosing system O2 (Bayrosoft)

View in the home display

Displays O2 measurement, programmed dose, and operating state on the home screen.

O2 (Bayrosoft) menu

Overview of the O2 menu submenus: Configuration, Average Temperature, Date & Time, Planned Dosings.

Configuration and Settings O2 (Bayrosoft)

Parameters for O2 configuration including temp. compensation, hose config., pool volume, and dose amount.

Basic principles

Explains the basic principles of automatic dosing with Bayrosoft® and recommended settings.

Main dosing

Details the main dosing process, its timing, and temperature compensation factors.

Intermediate dosing

Explains intermediate dosing to maintain Bayrosoft® levels, depending on temperature and programmed settings.

Trend of effective Bayrosoft concentration in water

Illustrates the trend of Bayrosoft® concentration over a week with and without intermediate dosing.

Additional dosings

Configuration of additional dosings for the O2 system, specifying days, times, and dose amounts.

Alarm monitoring

Overview

Introduces alarm monitoring and lists conditions that trigger alarms and block dosing.

Flow alarm

Explains the two variants of flow alarm monitoring: automatic and manual quitting.

Power-on delay

Describes the power-on delay timer that runs after device startup or flow alarm.

Alarm signalling

Details the mechanisms used by Pool Relax to signal alarm conditions.

Blocking of dosing by alarms

Explains how various alarms block dosing and when blocking is cancelled.

Alarm settings

Options for configuring acoustic alarms, flow alarm settings, and level alarm settings.

Service messages

Overview

Introduces the Service Messages function for planning maintenance procedures like calibration and replacements.

Signalling of due service messages

Describes how the system indicates when service procedures are due.

Re-planning of service messages

Explains how service messages are re-planned after performance or changes.

Event log

Overview

Explains the event log's purpose in monitoring operation and analyzing problems, listing recorded events.

Manual dosing

Overview

Describes the function of manual dosing to add care products to the pool water.

Manual Dosage menu

Details the settings available in the Manual Dosage menu, including current measured value and dosing direction.

Blocking by alarms

Lists alarm conditions that block manual dosing and how it is unblocked.

Special case of shock chlorination

Explains shock chlorination as a special manual dosing variant and its conditions.

Special case of pump test (pH; mV; O2)

Describes the pump test function for verifying dosing pump functionality.

Add-on Modules

Universal switch outputs

Overview of universal switch outputs for controlling external attractions like lighting or jet systems.

Programming the switch outputs

How to program switch outputs using timer-like settings for switching intervals and weekdays.

Manual mode

How to manually switch universal outputs on or off, deactivating time control.

Other Operating Modes

Describes other operating modes for switch outputs like Heating, Dosage, Extra Pump, and Alarm Relay.

Blocking by flow

Explains how to activate flow signal blocking for switch outputs.

Display in the Home Menu

How to display switching functions in the Home Menu and interpret their status.

Application examples

Examples of controlling 230 V devices and DC devices using universal switch outputs.

Control of a 230 V device

Wiring diagram for controlling a 230V AC device with a Pool Relax switch output.

Control of a device with a DC supply voltage (DC)

Wiring diagram for controlling a DC device with a Pool Relax switch output.

Control of a device with a potential-free control input

Connecting devices with potential-free control inputs directly to switch outputs.

Mounting of an additional cable feed-through

Service

Connections on the Controller Housing

Identifies and describes the various connections on the bottom and right side of the controller housing.

Connections in the Controller Housing

Detailed diagram and table of controller board terminals and their functions.

Opening the housing

Instructions for safely opening the controller housing, emphasizing disconnection of power and liquids.

Controller Board

Shows a diagram of the controller board with numbered component positions.

Changing the Buffer Battery

Instructions for replacing the buffer battery.

Changing the Fuse

Instructions for replacing fuses on the controller board.

Changing the care method

Software update

Preparation of the USB memory stick

Steps for preparing a USB memory stick with software update files.

Opening the housing and mounting a USB memory stick

Refers to instructions for opening the housing and inserting a USB stick.

Bootloader Update

Procedure for updating the bootloader via USB, including detection and start process.

PR3 Software Update (Application software)

Procedure for updating the main application software via USB.

Check of the Installed Software Version

How to check the currently installed software version.

Troubleshooting and fault elimination

pH measurement

Lists common problems related to pH measurement and their causes/solutions.

pH control; pH dosing

Lists common problems related to pH control and dosing, and their solutions.

Redox measurement

Lists common problems related to redox measurement and their causes/solutions.

Redox control (chlorine or bromine dosing)

Lists common problems related to redox control and dosing, and their solutions.

O2 automatic dosing system

Lists common problems related to O2 automatic dosing and their causes/solutions.

Temperature measurement

Lists common problems related to temperature measurement and their causes/solutions.

Technical Data

Measurement dimensions; ranges

Specifies the ranges for pH, Redox, and Temperature measurements.

Measurement amplifier tolerances

Lists the tolerance values for pH, Redox, and Temperature measurements.

Measuring inputs

Describes how pH, redox, and temperature are measured.

Control

Details the control modes for pH and redox.

Dosing outputs

Information on the relay switch outputs for dosing pumps.

Capacity of dosing pumps

Specifies the capacity (l/h) of the dosing pumps for different chemicals.

Monitoring and alarm functions

Lists the monitoring and alarm functions available in the system.

Alarm relay

Details the specifications for the alarm relay output.

Inputs; outputs for add-on functions

Lists inputs/outputs for add-on modules like switch outputs and universal switch inputs.

Optional Extensions

Information on optional extensions like the embedded web server.

Communication

Details communication options, including the embedded web server module.

Electrical connection

Specifies the electrical connection requirements for the system.

Temperature ranges

Lists the operating and storage temperature ranges for the controller.

Controller protection class

Specifies the controller's protection class (IP rating).

Overall dimensions

Provides the physical dimensions of the controller unit.

EC Declaration of Conformity

Product designation

Identifies the product as a measurement, control, and dosing system.

Product model

Specifies the product model as Pool Relax 3 (from 2017).

EC directives

Lists the relevant EC directives the product complies with.

Harmonizing standards used

Lists the harmonized standards applied for compliance.