Endress+Hauser Stamolys CA71CODcr Operating Instructions Manual
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Endress+Hauser Stamolys CA71CODcr Operating Instructions Manual

Photometric analytical system for determining the chemical oxygen demand following the din dichromate method
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Operating Instructions
Stamolys CA71CODcr
Photometric analytical system for determining the chemical
oxygen demand following the DIN dichromate method
BA00458C/07/EN/14.12
71162867
Valid of:
Software version 01.03.06

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Summary of Contents for Endress+Hauser Stamolys CA71CODcr

  • Page 1 Operating Instructions Stamolys CA71CODcr Photometric analytical system for determining the chemical oxygen demand following the DIN dichromate method BA00458C/07/EN/14.12 71162867 Valid of: Software version 01.03.06...
  • Page 2 – Front hose: sample inlet – Rear hose: inlet from valve V2 (0 mg/l O standard or standard) • Valve V2 – Front hose: inlet from canister with standard – Rear hose: inlet from canister with 0 mg/l O standard Endress+Hauser...

  • Page 3: Table Of Contents

    Stamolys CA71CODcr Table of contents Safety instructions ....4 Trouble-shooting ....44 Designated use .

  • Page 4: Safety Instructions

    Safety instructions Stamolys CA71CODcr Safety instructions Designated use The analyzer is a compact photometric analysis system. In particular, CA71 is designated for: • Monitoring sewage treatment plant outlets • Monitoring the sewage treatment plant inlet • Monitoring of industrial wastewater •...

  • Page 5: Notes On Safety Icons And Symbols

    Stamolys CA71CODcr Safety instructions Notes on safety icons and symbols 1.4.1 Safety messages The structure, signal words and safety colors of the signs comply with the specifications of ANSI Z535.6 ("Product safety information in product manuals, instructions and other collateral materials").

  • Page 6: Identification

    Identification Stamolys CA71CODcr Identification Device designation 2.1.1 Nameplate Compare the (extended) order code on the nameplate (on the analyzer) to the product structure and your order. You can read the following information from the nameplate: • Order code • Extended order code (=order code from the product structure) •...

  • Page 7: Certificates And Approvals

    Stamolys CA71CODcr Identification Certificates and approvals 4 approval 2.3.1 Declaration of conformity The product meets the requirements of the harmonized European standards. It thus complies with the legal requirements of the EC directives. The manufacturer confirms successful testing of the product by affixing the 4 symbol.

  • Page 8: Installation

    Installation Stamolys CA71CODcr Installation Incoming acceptance, transport, storage ► Make sure the packaging is undamaged! ► Inform the supplier about any damage to the packaging. Keep the damaged packaging until the matter has been settled. ► Make sure the contents are undamaged! ►...

  • Page 9: Installation Instructions

    Stamolys CA71CODcr Installation 3.2.2 Connecting the sample line a0016672 Fig. 3: Collecting vessel Connection for level measurement Ventilation Sample supply to analyzer, connection for hose with ID3.2mm(0.13") Connecting cable of electric agitator Sample supply, connection for hose with ID3.2mm (0.13") Sample overflow, connection for hose with ID10mm (0.39")
  • Page 10 Installation Stamolys CA71CODcr Connect the drain hoses to the connections marked for chromate waste, rinse waste and emergency overflow. Route the drain hose for dichromate waste into the cover of the canister and make sure the drain hose for the rinse water and that for emergency overflow end in the drain pipe previously laid.
  • Page 11 Stamolys CA71CODcr Installation 3.3.2 Sampling vessel (optional, without back-flush pump) Mount the base plate and collecting vessel on the left-hand side of the analyzer. Connect the hoses for sample intake, sample supply to analyzer and sample overflow to the appropriate hose connections ( å 3).

  • Page 12: Installation Examples

    Installation Stamolys CA71CODcr Installation examples 3.4.1 Stamoclean CAT221 A complete measuring system comprises: • a CAT221 filter system • an agitated collecting vessel • a CA71COD analyzer • a sample pump or sample pressure line • a compressor resp. compressed air supply a0013925 Fig.

  • Page 13: Post-Installation Check

    Stamolys CA71CODcr Installation Post-installation check • After installation, check that all connections are fitted tightly and are leakage resistant. • Ensure that the hoses cannot be removed without effort. • Check all hoses for damage. Endress+Hauser...

  • Page 14: Wiring

    Wiring Stamolys CA71CODcr Wiring WARNING Device is energized Improper connection can cause injury or death. ► The electrical connection must only be carried out by a certified electrician. ► Technical personnel must have read and understood the instructions in this manual and must adhere to them.
  • Page 15 Stamolys CA71CODcr Wiring 4.1.2 Terminal assignment CAUTION Shown diagram ( å 12) is an example The terminal assignment and cable colors can deviate from the actual assignment and colors! ► Only use the terminal assignment of the sticker in the device ( å 13) to connect your...
  • Page 16 Wiring Stamolys CA71CODcr Version without Modbus Function Designation Terminal one channel Mains Alarm value 1, channel 1 Alarm value 2, channel 1 Fault Reserve (unassigned terminals) Analog output 1 – 0/4 ... 20 mA Screen Input Sample conditioning remote control...

  • Page 17: Signal Connection

    Stamolys CA71CODcr Wiring Function Designation Terminal one channel Modbus RS485 – 2 – Input Sample conditioning remote control Brass screw with bolt top right in the connection compartment (marked with At Modbus module terminals The Modbus module is already installed and wired up at the factory.

  • Page 18: Switching Contacts

    Wiring Stamolys CA71CODcr 4.2.2 One-channel version Connection Designation Function Leak Liquid has collected in the drip pan Signal inputs No sample No sample available, measurement is not started, display flashes AV 1 Alarm value 1 exceeded or undershot AV 2...

  • Page 19: Connection Of The Sampling Vessel

    Stamolys CA71CODcr Wiring The results (measured value+unit of measure) are output in the "Data memory Measured values" menu. The calibration results (measured value+unit of measure) are output in the "Data memory- Calibration factors" menu. A null modem cable is required (not a crossed one).

  • Page 20: Post-Connection Check

    Wiring Stamolys CA71CODcr Post-connection check Carry out the following checks after electrical connection: Device status and specifications Note Is the analyser or cable externally undamaged? Visual inspection Electrical connection Note Does the supply voltage correspond to the data on the nameplate?

  • Page 21: Operation

    Stamolys CA71CODcr Operation Operation Display and operating elements 5.1.1 Analyzer functions a0012457 Fig. 15: Display and operating elements LED (measured value) LC display (status) Serial interface RS 232 Operating keys and control LEDs Display of the heating element 5.1.2 Timers for the back-flush pump function The back-flush pump of the sample preparation is controlled by two multi-function timers.

  • Page 22: Local Operation

    Operation Stamolys CA71CODcr Local operation The operating keys and the integrated indicator LEDs have the following functions: Key function Indicator LED function – “Auto measuring” option Alarm value 1 exceeded – back to the main menu from all sub-menus – backwards in the sub-menu...
  • Page 23 Stamolys CA71CODcr Operation 5.2.2 AUTO MEASURING The actions "calibration" and "measuring" are triggered by time-control. The respective action is displayed in the LC display. The most recently registered concentration value is displayed until the end of the next measurement. Otherwise, "wait" is displayed when •...
  • Page 24 Operation Stamolys CA71CODcr Menu item Range of adjustment Display Info (factory settings in bold) If the sample is diluted externally between taking the 0.10 ... 100.00 Dilution factor sample and the analyzer, the dilution factor has to be 1.00 entered here.
  • Page 25 Stamolys CA71CODcr Operation 5.2.4 PARAMETER ENTRY Menu item Range of adjustment Display Info (factory settings in bold) Measuring range COD-A: 0 to 200 mg/l / 0 mg/l The specified concentration is allocated a value of 0 or 4 Range start 0.00 mg/l...
  • Page 26 Operation Stamolys CA71CODcr 5.2.5 LANGUAGE The following languages are available: • Deutsch • English • Espanol 5.2.6 ERROR DISPLAY • This menu is a "read-only menu". • You can find the individual error messages, their meaning and solutions to problems in chapter "Trouble-shooting instructions".
  • Page 27 Stamolys CA71CODcr Operation 5.2.8 SERVICE NOTICE In this menu, you can trigger direct function controls. If these controls are incorrectly combined, however, this could damage the analyzer. ► Using the Service menu requires detailed knowledge of how the analyzer works and operates.

  • Page 28: Timers (Version With Back-Flush Pump Only)

    Operation Stamolys CA71CODcr 5.2.9 DATA STORAGE Selection Display Info The data memory contains the last 1024 concentration measured values with date and time. If there are no Measured values values available, "Empty set" appears. Browse through the data sets by pressing the keys.

  • Page 29: Modbus Rs485 (Optional)

    Stamolys CA71CODcr Operation a0015649 Fig. 18: Timer (removed, side view) When the timer is set correctly, switches 1 and 6 must be switched on, i.e. in the top position, while all the other switches are in the bottom position. To change the time range, e.g. from seconds to minutes, you must set switches 1-3 for the switch-on time and switches 6-8 for the switch-off time as indicated in the written instruction under the switches.

  • Page 30: Calibration

    Operation Stamolys CA71CODcr Calibration Recommendation: Start offset and standard calibration manually via the CONFIGURATION menu. First define the frequency offset and only then define the calibration factor. You can also view the current calibration data in this menu. Calibration example 1...

  • Page 31: Commissioning

    Stamolys CA71CODcr Commissioning Commissioning Function check CAUTION Avoid damage due to incorrect power supply and inaccurate or insecure hose connections ► Check that all connections are secure. In particular, ensure that all hose connections are secure, so that no leaks occur.
  • Page 32 Commissioning Stamolys CA71CODcr Perform the following tasks in the SERVICE menu: a. Switch the P2 reagent pump "on" (select P2 with and set to "g" with ). Leave it running until you can tell that there is reagent at the reactor.
  • Page 33 Stamolys CA71CODcr Commissioning Timer settings The two timers control the switching of the back-flush pump. The timer on the right ("Forward") controls the sample transportation into the sampling vessel and the timer on the left ("Backflush") controls the back-flush function of the pump.

  • Page 34: Maintenance

    ► Wear your personal protective clothing when carrying out any maintenance work. If you use components for maintenance or modification, which are not approved by Endress+Hauser, the warranty and the certified conformity of the device will become void. Maintenance schedule All maintenance duties that have to be carried out during normal operation of the analyzer are explained below.
  • Page 35 Stamolys CA71CODcr Maintenance reagents must be replaced. Shelf life can be prolonged by keeping the reagents in a dark, cool storage place. The reagents absolutely must be replaced when: • The reagents have been contaminated by sample (see "Trouble-shooting instructions") •...

  • Page 36: Replacing Pump Hoses

    Maintenance Stamolys CA71CODcr Replacing pump hoses 7.3.1 Analyzer CAUTION Risk of splashing reagents when removing hoses from the hose nozzles ► Wear protective clothing, gloves and goggles. The peristaltic pumps used for the analyzer convey the medium in a combination of vacuum and displacement pump.
  • Page 37 Stamolys CA71CODcr Maintenance Installing the new hoses Grease the new pump hoses and the pump heads with silicone grease. NOTICE Danger of mix-up and resulting malfunction ► Make sure you connect the new pump hoses to the correct connections at the T-hose connector.

  • Page 38: Setting The Hose Cases

    Maintenance Stamolys CA71CODcr 7.3.2 Back-flush pump Removing the old hose Flush the old hose with water first and then with air to empty it (see SERVICE). De-energize the back-flush pump. Loosen the screws 1 to 3 of the safety cover and remove the cover.

  • Page 39: Replacing Valve Hoses

    Stamolys CA71CODcr Maintenance Pump (via SERVICE menu) until water starts dripping out of the ends of the hoses. At the adjusting screw (item 1, Allen screw, AF 2.5) reduce the contact pressure until the water stops dripping but does not flow back into the hose.

  • Page 40: Cleaning

    Maintenance Stamolys CA71CODcr Cleaning 7.6.1 Housing NOTICE When cleaning, ensure that you do not damage the nameplate on the analyzer. ► Do not use any solvent-based cleaning agents. To clean the analyzer housing, proceed as follows: • Wipe up any reagent contamination with a disposable cloth and rinse the area with clean water.

  • Page 41: Placing Out Of Service

    Stamolys CA71CODcr Maintenance Placing out of service You must place the analyzer out of service before shipping or before longer operation breaks (more than 2 days). CAUTION Residues of chemicals can cause injuries ► Thoroughly rinse all of the lines of the measuring system with clean water.

  • Page 42: Accessories

    Accessories Stamolys CA71CODcr Accessories In the following sections, you find the accessories available at the time of issue of this documentation. For information on accessories that are not listed here, please contact your local service or sales representation. Collecting vessel Agitated collecting vessel with level measurement •...

  • Page 43: Maintenance Kit

    Stamolys CA71CODcr Accessories Maintenance kit Kit CA71COD: Wear parts • a set of pump hoses TYGON yellow/blue • a set of pump hoses TYGON orange/white • a C-FLEX hose ID 1.6 mm (1/16") • a NORPRENE hose ID 1.6 mm (1/16") •...

  • Page 44: Trouble-Shooting

    Trouble-shooting Stamolys CA71CODcr Trouble-shooting Trouble-shooting instructions Although the analyser is not very prone to faults due to its simple assembly, problems can, of course, not be completely ruled out. Possible errors, their causes and their possible remedies are listed below.

  • Page 45: Process Errors Without Messages

    Stamolys CA71CODcr Trouble-shooting Process errors without messages Error Possible cause Tests and / or corrective measures Reagents contaminated The dichromate solution R2 must be orange to brown in color. It should not have a green hue. or aged The sulfuric acid R1 must be clear and colorless.

  • Page 46: Spare Parts

    Trouble-shooting Stamolys CA71CODcr Error Possible cause Tests and / or corrective measures Device or discharge Remove blockage. Leak at photometer blocked Service Blockage, deposits in Not enough sample Shorten the cleaning intervals of sample conditioning. device conditioning Water hardness Lime deposits can be removed by flushing with 5% hydrochloric acid.

  • Page 47: Software History

    The device must be returned if repairs or a factory calibration are required, or if the wrong device has been ordered or delivered. According to legal regulations, Endress+Hauser, as an ISO-certified company, is required to follow certain procedures when handling returned products that are in contact with medium.

  • Page 48: Disposal

    Trouble-shooting Stamolys CA71CODcr Disposal NOTICE Waste containing chromate and waste free from chromate are produced. The latter contains sample residue and acid. Reagent waste must be disposed of correctly. ► Your local sales office will be happy to assist in the correct disposal of reagent waste.

  • Page 49: Technical Data

    Stamolys CA71CODcr Technical data Technical data 10.1 Input Measured variable COD [mg/l O Measuring range CA71COD-A 5 to 200 mg/l O CA71COD-B 50 to 5000 mg/l O Wavelength CA71COD-A 465 nm and 625 nm CA71COD-B 589 nm 10.2 Output Output signal...

  • Page 50: Power Supply

    Technical data Stamolys CA71CODcr Protocol specific data Protocol Function codes 03 (Read holding registers) Broadcast support for function codes Output data 1 main measured value at address 40008 (2 bytes) Data format 16 bits Input data Supported features Slave address, data format, check sum and baudrate can be configured using Advantech ADAM Utility Software at re-boot with set init switch 10.3...

  • Page 51: Installation

    Stamolys CA71CODcr Technical data 10.5 Installation Mounting location Installation on a vibration-free wall 10.6 Environment Ambient temperature 10 to 35 ˚C (50 to 95 ˚F), avoid strong fluctuations Humidity below the condensation limit, installation in usual, clean rooms outdoor installation only possible with protective devices (customer supplied)

  • Page 52: Appendix

    Appendix Stamolys CA71CODcr Appendix 11.1 Operating matrix a0012416-en Endress+Hauser...
  • Page 53 Stamolys CA71CODcr Appendix a0012417-en Endress+Hauser...

  • Page 54: Index

    Stamolys CA71CODcr Index Accessories........42 Icons .
  • Page 55 Stamolys CA71CODcr Reaching the terminal block ..... . . 14 Reagents ........34, 42 Replacing Pump hoses .
  • Page 56 BA00458C/07/EN/14.12...

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