BWT Bewades 70W70/08 HI

Questions and Answers

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Nichole MeadowsAug 6, 2025
What to do if the displayed emission power is unusually low in my BWT Water Filtration System?
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  Robert MorganAug 6, 2025
  If the emission power is unusually low, it could be due to several reasons. The UV transmission of the drinking water might be too low, requiring feed water treatment through filtration. Alternatively, iron or manganese deposits may have formed, necessitating the removal of deposits on the UV emitter casing tube and sensor window, with possible replacement of the tube. Other potential causes include UV emitters exceeding their service life (EOL), requiring replacement, a misaligned UV emitter (rotate slightly), faulty UV emitters (replace), sensor malfunction (replace sensor), air bubbles in front of the sensor window (relieve pressure and re-install sensor window), or electromagnetic interference (eliminate the interference signal).
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Mitchell RiveraAug 15, 2025
Why does my BWT Water Filtration System UV-Control II display the error message !LAMP! out?
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  Susan SmithAug 15, 2025
  The error message !LAMP! out indicates a problem with the UV emitter. It could be defective, requiring inspection or replacement. Another cause might be a faulty ballast, which would need to be replaced. Also, check the UV emitter signal cable for contact faults. The supply network fluctuations may also be the reason.
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Ashley MirandaAug 26, 2025
How to fix water in the UV emitter casing tube of my BWT Water Filtration System?
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  Erin VillanuevaAug 26, 2025
  Water in the UV emitter casing tube can occur due to condensation when operating the unit without the blue protective cap. To resolve this, check the installation of the UV emitter casing tube and seals. Ensure the blue protective cap is correctly positioned, and replace the O-ring if needed.

Summary

Safety Instructions

General safety instructions

General warnings and precautions for safe operation of the unit.

Scope of the documentation

Defines the applicability and intended audience of the manual.

Personnel qualifications

Specifies required qualifications for installation and operation personnel.

Transport and installation

Guidelines for safely moving and positioning the unit.

Symbols used

Explains the meaning of various symbols used in the document.

How safety instructions are displayed

Details the format and meaning of hazard warnings in the manual.

Product-specific safety instructions

Specific safety measures related to electrical and UV hazards.

Use

Intended use

Describes the primary purpose of the UV disinfection units.

Foreseeable misuse

Lists improper uses that could lead to hazards or damage.

Disclaimer

Manufacturer's liability limitations regarding product modification or misuse.

Function

Design of UV units

Explains the key parameters influencing the UV unit's design.

Installation conditions

General

Outlines general regulations and specifications for installation.

Installation site and environment

Specifies requirements for the location where the unit will be installed.

Feed water

Details requirements for the water supplied to the unit.

Installation

Provides guidance on installing the unit, including pipe materials and filters.

Operation

Emphasizes the need for technical consultation before operation.

Installation

Installation diagram

Illustrates the physical layout and connections of the unit components.

Terminal connection diagram UV-Control II

Shows the wiring and terminal assignments for the control unit.

Startup

Operation

Replacing the air filter

Instructions for replacing the air filter and associated warnings.

Cleaning the UV emitter casing tube

Steps for cleaning the casing tube and radiation chamber.

Replacing UV emitters

Procedure for replacing the UV emitters, including handling precautions.

Replacing the sensor

Steps for replacing the UV sensor, including handling precautions.

Replacing sensor window

Instructions for replacing the sensor window, including lubrication notes.

Operators responsibilities

Intended operation

Defines the scope of operator responsibilities for proper system use.

Inspections (by the operator)

Lists routine checks recommended for the operator.

Inspections (according to EN 806-5 by the operator)

Details specific inspection activities and their frequencies.

Maintenance according to EN 806-5 (by BWT customer service or authorized specialist)

Outlines maintenance tasks performed by specialists, including part replacement.

Troubleshooting

Warranty

Product returns

Procedure for returning products and obtaining a return number.

Technical Data

Dimensions

Provides dimensional specifications and diagrams for various unit models.

Decommissioning and Disposal

Decommissioning, temporary

Contact information for temporary unit deactivation.

Decommissioning, permanent

Guidelines for permanent removal and materials used.

Disposal

Instructions on how to dispose of the product and its components properly.

Standards and legal provisions

Operating data sheet

EU Declaration of Conformity