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Evoqua Wallace & Tiernan Depolox 3 plus - User Manual

Evoqua Wallace & Tiernan Depolox 3 plus
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Depolox
®
3 plus RESIDUAL ANALYZER
FOR MEASURING CHLORINE, CHLORINE DIOXIDE,
OZONE, AND/OR pH OR FLUORIDE
BOOK NO. WT.050.560.001.UA.IM.0714
W3T140188 - U.S.
W3T172611/Issue 06 - Germany

Table of Contents

Questions and Answers

  • M
    mwardJul 25, 2025
    How to fix insufficient sample water flow in Evoqua Measuring Instruments?
    • R
      Robert WestJul 25, 2025
      If you're experiencing insufficient sample water flow in your Evoqua Measuring Instruments, several factors could be the cause. Make sure that the drain hose has a 1500mm free fall, the cell unit and strainer are free of dirt, the lines are clear of air bubbles, the shut-off valve is open, and the regulating valve is working correctly (strip and clean the regulator if necessary).
  • S
    Stephanie RogersJul 30, 2025
    Why does the indicated value oscillate in Evoqua Measuring Instruments?
    • R
      Rebecca SparksJul 30, 2025
      If the indicated value oscillates considerably at a constant chlorine concentration in your Evoqua Measuring Instruments, it could be due to fluctuations in water pressure or pH value. Check the pressure and pH value. Also, the inlet to the cell body or the flow regulator might be clogged, so clean them. If the flow regulator is defective, check or replace it.
  • J
    Jessica ParkerAug 4, 2025
    What to do if Evoqua Measuring Instruments have air leaks?
    • C
      carrolldeborahAug 4, 2025
      If you're experiencing air leaks in your Evoqua Measuring Instruments, the issue might stem from faulty o-rings (grease or replace them) or pipe connections (check and repair where needed). Also check the booster.
  • C
    charlenemartinezAug 9, 2025
    How to fix low electrode current in Evoqua Measuring Instruments?
    • C
      Charles ChaseAug 9, 2025
      If you find that the electrode current is too low in your Evoqua Measuring Instruments, it may be due to dirty electrodes (clean them with fine sandpaper and add more grit), worn electrodes (replace them), or electrodes touching (adjust them).
  • V
    vcaseAug 14, 2025
    Why is the output unsteady from electrodes in Evoqua Wallace & Tiernan Depolox 3 plus?
    • L
      Lydia CamposAug 14, 2025
      If you are getting an unsteady output from the electrodes in your Evoqua Measuring Instruments, the membrane might be clogged (replace it) or there might be air bubbles on the inner surface of the membrane (adjust).
  • A
    Alexander GarciaAug 19, 2025
    What to do if zero or span is not adjustable in Evoqua Wallace & Tiernan Depolox 3 plus?
    • S
      Sonia WheelerAug 20, 2025
      If the zero or span is not adjustable on your Evoqua Measuring Instruments, wait until the 24-hour running-in period is completed, measure the electrode voltage across terminals 30 and 31 and adjust Upot to 0.25V ensuring the zero current is less than ±5µA, check the µA-range for cell current issues, and increase sample water flow.

Summary

Ordering Information and Warranty

Warranty Terms and Conditions

Details of the product warranty, exclusions, and limitations of remedies.

Very Important Safety Precautions

Hazardous Material and Electrical Safety

Warnings and responsibilities regarding hazardous materials and electrical safety.

Section 1 - Technical Data

Sensor Feature Comparison

Section 2 - Installation

Depolox 3 plus Installation Procedures

Steps for unpacking, checking voltage, and installing the main unit.

Bare Electrode Sensor Kit Installation

Membrane Sensor Installation

pH and Fluoride Sensor Installation

Section 3 - Operation

Depolox 3 plus Operation Overview

General description of the analyzer, display, keypad functions, and menu navigation.

Depolox 3 plus Calibration Procedures

Detailed steps for calibrating the analyzer's sensors (Chlorine, pH, Fluoride).

Free Chlorine (Bare Electrode) Sensor Kit Operation

Instructions for starting up, adjusting flow, and operating the bare electrode kit.

Membrane Sensor Kits Operation

Guidelines for starting up, shutting down, and operating membrane sensor kits.

pH Sensor Operation and Maintenance

Fluoride Sensor Kit Operation and Maintenance

Section 4 - Service

Depolox 3 plus Error Messages and Remedies

Lists common error messages, their causes, and corrective actions.

Maintaining Bare Electrode Flow Block Assembly

Routine maintenance procedures for the bare electrode flow block assembly.

Replacing Cell Sand and Components

Membrane Sensor Kit Maintenance and Troubleshooting

Section 6 - Spare Parts List

W2 T9694 Bare Electrode Sensor Kit Parts

Membrane Sensor Kits and Cables

W2 T7957 Bare Electrode Retrofit Set Parts

W2 T7958 VariaSens Retrofit Set Parts

pH Sensor and Fluoride Sensor Kits Parts

Evoqua Wallace & Tiernan Depolox 3 plus Specifications

General IconGeneral
BrandEvoqua
ModelWallace & Tiernan Depolox 3 plus
CategoryMeasuring Instruments
LanguageEnglish

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