TOA-DKK CD-36D Instruction Manual
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TOA-DKK CD-36D Instruction Manual

Reagentless free chlorine analyzer
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No. CD3-IB21928E
REAGENTLESS FREE
CHLORINE ANALYZER
Please keep this instruction manual close at hand of the persons who are in charge of
the operation of this product.
Before operating this product, please read this instruction manual carefully for its
correct handling.
MODEL CD-36D
(Including explanation on the sensor)

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  • Page 1 REAGENTLESS FREE CHLORINE ANALYZER MODEL CD-36D (Including explanation on the sensor) Please keep this instruction manual close at hand of the persons who are in charge of the operation of this product. Before operating this product, please read this instruction manual carefully for its correct handling.

  • Page 2: Table Of Contents

    Model: CD-36D Table of Contents Table of Contents ●Safety Information ·······························································································3 (1) Notes on use of the instruction manual ⋅⋅⋅⋅ 3 (2) Meaning of markings ⋅⋅⋅⋅ 3 (3) Safety precautions ⋅⋅⋅⋅ 4 ●Warranty ·······················································································································5 1. General ·····················································································································6 (1) Outline of Start-up Procedure ⋅⋅⋅⋅ 6 (2) Configuration of the Transmitter for the Measuring System ⋅⋅⋅⋅...
  • Page 3 Model: CD-36D Table of Contents 8. Installation ············································································································34 8.1 Installation of Flow Cell and Detector ···································································34 8.2 Installation of Transmitter ······················································································35 (1) Selection of Installation Site for the Transmitter ⋅⋅⋅⋅ 35 (2) Installation Method ⋅⋅⋅⋅ 35 8.3 Wiring······················································································································36 (1) Wiring Diagram ⋅⋅⋅⋅ 36 (2) Wiring for the Transmitter ⋅⋅⋅⋅...

  • Page 4: Safety Information

    Model: CD-36D Safety Information Safety Information (1) Notes on use of the instruction manual Important items for safety are described in this manual such as notations of warning and caution. Please handle the instruction manual as follows: (a) The instruction manual is required not only at the start of operation but also required when maintenance is performed or in case a failure occurs.

  • Page 5: Safety Precautions

    Model: CD-36D Safety Information (3) Safety precautions Power Supply Do not connect power supply exceeding the specification limit. In addition, be careful not to connect erroneously to other terminals. Gasses Do no use this instrument in a location where hazardous gas such as explosive gas, corrosive gas or flammable gas exists.

  • Page 6: Warranty

    Model: Warranty Warranty (1) Warranty Coverage DKK-TOA Corporation (DKK-TOA) warrants its products against defective material or workmanship for the warranty period. (a) The warranty period is one year from the date of delivery to the original user. If the date of delivery cannot be specified, the warranty period is 24 months from the month following the date of manufacture shown on the product nameplate.

  • Page 7: General

    1. General 1. General This “Reagentless Free Chlorine Analyzer”, Model: CD-36D (hereinafter, referred to as the “Transmitter” or “Product”), is designed and manufactured for the purpose of monitoring the residual free chlorine in the city water and is applicable for your monitoring system to continuously monitor the city water quality being distributed.
  • Page 8 Model: CD-36D 1. General Configuration of the Transmitter for the Measuring System Item Model Remarks Reagentless free chlorine analyzer Transmitter CD-36D Transmitter Vibrating type residual free chlorine detector or CLV series or Detector Rotating type residual free chlorine detector CLR-21-A...

  • Page 9: External View

    (3) External View Rear Cap Casing Front Cap Fittings for Installation Reagentless Free Chlorine Analyzer, “Transmitter” Model: CD-36D Vibrating Type Residual Free Chlorine Detector Model: CLV Series Lead Lead Wires: 1.5m (Standard) Rotating Type Residual Free Chlorine Detector Model: CLR-21-A Lead Wires: 1.5m (Standard)

  • Page 10: Names Of Major Parts

    Model: CD-36D 2. Names of Major Parts 2. Names of Major Parts Pilot Lamp: Front Cap To display the mode presently set, Power Switch If “ON” cin “MEAS” mode If blinking cin “TEST” mode (POWER) Digital Display Display of Knob Cover:...

  • Page 11: Preparation For Operation

    Model: CD-36D 3.1 Filling of Beads 3. Preparation for Operation 3.1 Filling of Beads ① Remove the detector. ⋅⋅⋅⋅⋅⋅ Prepare the beads supplied with the detector, and withdraw the detector vertically from the flow cell. ② Fill beads. ⋅⋅⋅⋅⋅⋅ Loosen the detector cap and remove it. Then, fill the cap with beads to the level notch as shown in the following figure.

  • Page 12: Filling Of Sodium Chloride Tablets

    Model: CD-36D 3.2 Filling of Sodium Chloride Tablets ③ Clean the threads of the cap. ⋅⋅⋅⋅⋅⋅ Immerse the cap in water to make beads attached on threads settle in cap and to clean the threads so that no beads remain on the threads.

  • Page 13: Introduction Of Sample Water

    Model: CD-36D 3.3 Introduction of Sample Water ① Fill the container with sodium chloride tablets. ⋅⋅⋅⋅⋅⋅ Open the lid of the container and fill it with sodium chloride tablets to its level of ca. 80%. ② Close the lid. ⋅⋅⋅⋅⋅⋅ Close the lid tight.
  • Page 14 Model: CD-36D 3.3 Introduction of Sample Water [Conditions of Sample Water] • pH·································· 6.5 to 7.5pH • Electrical conductivity ···· Equal to or higher than 8 mS/m • Temperature ··················· 0 to 40°C (without freezing) • Pressure ························· 0.01to 0.15MPa •...

  • Page 15: Operation

    Model: CD-36D 4.1 Start-up Procedure 4. Operation 4.1 Start-up Procedure ① Confirm that the installation work and preparation are all finished. ⋅⋅⋅⋅⋅⋅ Confirm that “8. Installation” (Installation, Piping, Wiring) and “3. Preparation for Operation” (Filling of Beads, Introduction of Sample Water, etc.) are finished.
  • Page 16 Model: CD-36D 4.1 Start-up Procedure Power Switch (POWER) Voltmeter Confirm the line voltage. Electric Shock ● Since AC power supply is connected to terminals “90, 91”, make sure to turn off the power supply to the Transmitter on the power supply side in case some work is needed near the terminal board.

  • Page 17: Shutdown Of Operation

    Model: CD-36D 4.2 Shutdown of Operation ⑦ Confirm the measuring range. ⋅⋅⋅⋅⋅⋅ The measuring range is preset to “0 to 2mg/L” by DKK-TOA before shipping. If alteration of the measuring range is needed, refer to “6.1 Setting of Measuring Range”.

  • Page 18: Calibration

    Model: CD-36D 5. Calibration 5. Calibration (a) When starting the operation of the Transmitter, it is necessary to execute the calibration in order to adjust the characteristics between the detector and the Transmitter. Additionally, make sure to execute the calibration on a regular basis during operation in order to maintain accurate measurement.

  • Page 19: Span Calibration

    Model: CD-36D 5. Calibration Disconnect the lead wire “1” from its terminal. Disconnect the lead wire “1”. ③ Adjust the zero point. ⋅⋅⋅⋅⋅⋅ Wait until the indication stabilizes (for ca. 1 to 2min), and then, adjust the indication to “0.00”mg/L by turning the “ZERO” knob.
  • Page 20 Model: CD-36D 5. Calibration “Measurement mode” (MEAS) “Maintenance mode” (TEST) “SPAN” Knob Fixing Screw for Cover Mode Switch “ZERO” Knob Knob Cover Position of the “SPAN” Knob ④ Fix the knob cover in place. ⋅⋅⋅⋅⋅⋅ Put the knob cover back in place and tighten 2 fixing screws for the knob cover.

  • Page 21: Setting Of Measuring Range And Output Signal

    Model: CD-36D 6.1 Setting of Measuring Range 6. Setting of Measuring Range and Output Signal 6.1 Setting of Measuring Range Take the following procedure to change the measuring range if necessary. ① Turn off the power. ⋅⋅⋅⋅⋅⋅ Open the rear cap and turn off the power switch. (Power: OFF) ②...

  • Page 22: Setting Of Output Signal In "Maintenance" Mode

    Model: CD-36D 6.2 Setting of Output Signal in “Maintenance” mode 〔NOTE〕 • Function of the striker-1 and r-2: Striker-1 ······· To control the function of “ZERO” knob on and off. It is used mainly during adjustment. If it is set to “OFF”, the “ZERO” knob becomes not functional.
  • Page 23 Model: CD-36D 6.2 Setting of Output Signal in “Maintenance” mode Ammeter (or Voltmeter) Connect an ammeter (or voltmeter). ③ Set the output signal to the desired value. ⋅⋅⋅⋅⋅⋅ Open the front cap. Then, set the output signal to the desired value by turning the adjustable knob of VR4 with a screw driver referring to the ammeter (or voltmeter) as shown in the figure below.

  • Page 24: Maintenance

    Model: CD-36D 7.1 Maintenance Items 7. Maintenance 7.1 Maintenance Items (a) In order to maintain the function of the Product in good order and to make its performance work, it is necessary to regularly execute maintenance and inspection work based on the full understanding about the measuring principle and features of the Product.

  • Page 25: Yearly Consumables And Spare Parts

    Model: CD-36D 7.2 Yearly Consumable and Spare Parts / 7.3 Cleaning of Detector and Replacement of Sensing Electrode 7.2 Yearly Consumable and Spare Parts The following table shows general consumables and spare parts. Be prepared with them in your stock just in case, and please note that they vary with the specification of the Transmitter, measuring conditions, etc.
  • Page 26 Model: CD-36D 7.3 Cleaning of Electrode and Replacement of Sensing Electrode ④ Remove the detector from the flow cell. ⋅⋅⋅⋅⋅⋅ Withdraw the detector vertically from the flow cell to remove the Detector. ⑤ Clean the tip of the detector. ⋅⋅⋅⋅⋅⋅ Clean the tip of the detector with the washing solution prepared at step ①, and then rinse it with plenty of city water.

  • Page 27: Replacement Of Beads

    Model: CD-36D 7.4 Replacement of Beads 【IMPORTANT】 • Turn the sensing electrode clockwise and make sure the electrode is fixed firmly. Loosening of the electrode may cause a failure of the product. Sensing electrode ⑧ Return the detector to the original state. ⋅⋅⋅⋅⋅⋅ Reinstall the cap on the top of the detector paying attention not to spill beads from the cap.
  • Page 28 Model: CD-36D 7.4 Replacement of Beads Lead Wires Connector Counter electrode O-ring Sensing Wire Mesh. Beads Electrode Detector Flow Cell Ceramic Rotate to Beads Level Beads remove. Notch Beads to be filled <In case of CLV series> Connector Beads Closing Ring...

  • Page 29: Cleaning Of Flow Cell

    Model: CD-36D 7.5 Cleaning of Flow Cell ⑦ Return the detector to the original state. ⋅⋅⋅⋅⋅⋅ Confirming that the O-ring is correctly set in the groove in the flow cell, insert the detector slowly and vertically into the flow cell until the cap touches the bottom of the flow cell.

  • Page 30: Adjustment Of Output Signal Of The Transmitter

    Model: CD-36D 7.6 Adjustment of Output Signal of the Transmitter ④ Clean the flow cell. ⋅⋅⋅⋅⋅⋅ Clean the inside of the flow cell with neutral detergent. If it is difficult to clean the flow cell with the neutral detergent, use ca. 5 to 10% hydrochloric acid solution.
  • Page 31 Model: CD-36D 7.6 Adjustment of Output Signal of the Transmitter Ammeter (or Voltmeter) Connect an ammeter. ④ Adjust the zero point of the output signal. ⋅⋅⋅⋅⋅⋅ Open the front cap. Then, adjust the indication of the ammeter (or Voltmeter) to the following value by turning the adjustable knob of VR3 with a screw driver.
  • Page 32 Model: CD-36D 7.6 Adjustment of Output Signal of the Transmitter 〔NOTE〕 • Conversion Method to the Output Signal from the Indicated Value on the digital display: The relation between the output signal and the measured value (mg/L) of the residual chlorine concentration varies with the measuring range of the Transmitter.

  • Page 33: Replacement Of Fuse

    Model: CD-36D 7.7 Replacement of Fuse 7.7 Replacement of Fuse When the fuse is blown out, replace it as follows. ① Turn off the power. ⋅⋅⋅⋅⋅⋅ Open the rear cap and turn off the power switch. (Power: OFF) Turn counterclockwise to take out.

  • Page 34: Overhaul And Replacement Of Detector

    Model: CD-36D 7.8 Overhaul and Replacement of Detector 7.8 Overhaul and Replacement of Detector (1) Overhaul of model CLR-21-A detector (a) The model CLR-21-A detector should be overhauled at three-year intervals. For overhaul work, ask DKK-TOA’s sales office or agent. Since overhaul work includes disassembly, replacement of consumables (the working sections) and shaft center adjustment, our trained expert technical service personnel will carry out this work.

  • Page 35: Installation

    Model: CD-36D 8.1 Installation of Flow Cell and Detector 8. Installation 8.1 Installation of Flow Cell and Detector Flow Cell Detector (CLV Series) Sample Outlet (Rc 1/4) 50A Pipe Fittings for installation ( 60.5) Saddle (for 50A) 2-M8 11.5 11.5 Sample Inlet <In case of CLV Series>...

  • Page 36: Installation Of Transmitter

    Model: CD-36D 8.2 Installation of Transmitter 8.2 Installation of Transmitter (1) Selection of Installation Site for the Transmitter Select the installation site for the Transmitter taking into account the following conditions. (a) The place should be free from mechanical vibration.

  • Page 37: Wiring

    Model: CD-36D 8.3 Wiring 8.3 Wiring (1) Wiring Diagram (a) Lead wires ⋅⋅⋅⋅⋅⋅ Connect the lead wires to terminals “1 to 6, S” on the terminal board of the Transmitter. (b) Cable for Output Signal ⋅⋅⋅⋅⋅⋅ Connect the Transmitter to a receiver (or a recorder, etc.) with a shielded 2-core cable (OD φ8mm).

  • Page 38: Wiring For The Transmitter

    Model: CD-36D 8.3 Wiring (2) Wiring for the Transmitter Introduce each cable to the Transmitter and connect terminals of each cable to corresponding terminals on the terminal board. If the water-seal cable inlet attached to the Transmitter is to be used, refer to the following figures.

  • Page 39: Piping

    Model: CD-36D 8.4 Piping 8.4 Piping Tube Joint (1/4- 6 Detector (CLV Series or Model: CLR-21-A) Stop Valve Tube ( 6 Flow Cell Sampling Point (Model: CLZ-1) Open to Tube Joint the air. (1/4- 6 Sample Inlet Tube (Polyethylene) Primary side: 0.1 to 0.7MPa Secondary side: 0.05 to 0.1MPa...

  • Page 40: Conductivity Modifying Column, Model: Clz-2

    Model: CD-36D 9. Option 9. Option (1) Conductivity modifying column, Model: CLZ-2 (option) Flow Cell Model: CLZ-1 NaCl filled in the container Sample Outlet (Rc1/2) Sample Level Sample Inlet 2-M8 Sample Inlet 51.5 51.5 (Rc1/2) Conductivity modifying column, Model: CLZ-2...
  • Page 41 Model: CD-36D 9. Option Detector Opened to the air (CLV Series or Model: CLR-21-A) Column for Measurement of Pure Water Sample Inlet Tube Joint (1/4- Tube (Polyethylene, Drainage Ditch Example of Piping for Conductivity modifying column (b) Flow Rate and Electrical Conductivity...

  • Page 42: Flow Cell, Model: Clz-4

    Model: CD-36D 9. Option 3mg/L Cl (mg/L) 2mg/L Cl 1mg/L Cl 0mg/L Cl Electrical Conductivity of Sample (mS/m) Electrical Conductivity Characteristic of Vibration-Type Residual Chlorine Detector (2) Flow Cell, Model: CLZ-4 (option) Detector (CLV Series or Model: CLR-21-A) Measuring Cell...

  • Page 43: Pole Stand, Model: B150

    Model: CD-36D 9. Option (3) Pole Stand, Model: B150 (option) with a Cap Carbon Steel Pipe 50A ( 60.5) 4- 14 Pole Stand The above figure shows a pole stand, Model: B150 (option) provided for installation of the Transmitter, Flow Cell, Conductivity modifying column.

  • Page 44: Specifications

    Model: CD-36D 10. Specifications 10. Specifications (1) Basic Specifications Product Name : Reagentless Free Chlorine Analyzer/Transmitter Model : CD-36D Measuring Object : Free chlorine in Chlorinated water. Measurement Method : Polarography with vibrating or rotating micro electrode Electrode Cleaning Method...

  • Page 45: Performance

    Model: CD-36D 10. Specifications Materials of Construction and : Transmitter AC7A (Aluminum die-cast), Metallic Silver and ····· Finish blue painting Flow Cell PMMA (Transparent acrylic resin) ········ Detector SUS304, PVC, Aluminum, ································ (Munsell 5PB8/1 or equivalent) Weight : Transmitter ca.3.5kg ···························...
  • Page 46 Head Office Address: 29-10, 1-Chome, Takadanobaba, Shinjuku-Ku, Tokyo, 169-8648 Japan Telephone: +81-3-3202-0225 Facsimile: +81-3-3202-5685 URL http://www.toadkk.co.jp/...

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