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Analytic Jena contrAA 700 User Manual

High resolution continuum source atomic absorption spectrometer
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contrAA 700
High Resolution Continuum Source
Atomic Absorption Spectrometer
User Manual

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Summary of Contents for Analytic Jena contrAA 700

  • Page 1 700 High Resolution Continuum Source Atomic Absorption Spectrometer User Manual...
  • Page 2 Service: Analytik Jena AG Kundendienst Konrad-Zuse-Str. 1 07745 Jena Germany Phone: Hotline: + 49 (0) 3641 / 77-7407 77-7449 Fax: + 49 (0) 3641 / E-Mail: service@analytik-jena.de General information about Analytik Jena AG on the internet: http://www.analytik-jena.de Copyrights and Trademarks Microsoft, Windows 7/8, MS Excel are registered trademarks of Microsoft Corp.

  • Page 3: Table Of Contents

    Gases for flame technique ................23 Laboratory fume hood .................. 24 System layout and general view ..............25 Functions and design of the contrAA 700 ........27 Physical measuring principle of HR-CS AAS ..........27 Xenon lamp ....................29 Graphite tube atomizer ................. 30 5.3.1...
  • Page 4 6.6.8 Add-on installation of scraper ............... 67 6.6.9 Operation of the HPT burner head ............... 69 Starting the contrAA 700 with accessory units up ........69 6.7.1 Turn-on sequence, daily start of work ............69 6.7.2 Turn off sequence..................70 Care and maintenance ..............
  • Page 5 Replacing the tube set for diluent and washing liquid at the AS-FD .... 98 7.6.7 Clean-up after cup overflow ................. 98 Compressor JUN-AIR 6/S ................99 Transportation of the contrAA 700 ..........100 Disposal .................... 101 Abbreviations / terms ............... 102 EC Declaration of Conformity ............104...
  • Page 6 Fig. 23 Connector strip with supply and control connector terminals ......46 Fig. 24 Rear panel view of contrAA 700 with ports and terminals for gas and electric power supply, including fuse holders ..............46 Fig. 25 Elements in sample compartment for graphite tube technique ......48 Fig.
  • Page 7 Rear of the autosampler AS-FD ................. 65 Fig. 38 Dosing unit at the Fluidik module of the AS-FD ..........65 Fig. 39 SFS 6 installed at the contrAA 700 for manual sample delivery ......66 Fig. 40 Screws in front-side burner jaw ................68 Fig. 41 Fixing rail with burner mounted / knurled thumb screws at scraper ....
  • Page 8 Index of tables Index of tables Table 1 Dimensions and weights of the contrAA 700 and its system components ..21 Table 2 Power requirements ...................22 Table 3 Gases in the Graphite Tube Technique .............23 Table 4 Gases for flame technique ..................24 Table 5 Laboratory fume hood requirements ..............24...

  • Page 9: Fundamental Information

    Fundamental Information Intended Use The contrAA 700 is an atom absorption spectral photometer to allow sequential analysis of metal and non-metal traces in liquid and dissolved samples. Running under PC control, the contrAA 700 provides a high resolution continuum source atom absorption spectrometer tool for flame, hydride and graphite tube technique.
  • Page 10 Instructions for actions/steps of operation are numbered consecutively and united in  action units. Menu and option sequences in software are subdivided by "/", e.g. F  Buttons or keys are marked by square brackets, e.g. [OK]. Issue 01/2014 contrAA 700...

  • Page 11: Safety Instructions

    Safety instructions Safety instructions For your personal safety and for the trouble free and safe operation of the contrAA 700, read this section carefully before starting it up. Follow all safety instructions given in this manual and pay attention to all messages and notes displayed on the screen by control software.
  • Page 12 (→ section "Energy supply” p.22). To perform work on its electrical system, turn power to the contrAA 700 off in all cases and detach the line power plug. There will be no safe cutting of line power supply, unless the line plug is removed.
  • Page 13 Keep combustible materials away from the device. VENTILATION Take care to ensure that the ventilation systems on the contrAA 700 and the accessory units are always functional. Covered vents, ventilation slots, etc. may result in malfunction or damage to the device.
  • Page 14 CLEANING AND MAINTENANCE Except for the work described in Section "Care and maintenance” p.71, service, maintenance and repair work on the contrAA 700 may only be carried out by service technicians employed with or authorized by Analytik Jena AG. Non-compliance involves the risk of misalignment or damage to the device.

  • Page 15: Specifications

    Specifications Specifications Technical data 3.1.1 Technical data of contrAA 700 Optical system Reflecting optics with protective coating and optical system in light-proof casing Monochromator Echelle grating double monochromator of F=380 mm focal length, with variable intermediate slit; preliminary monochromator with quartz prism. Wavelength selection is accomplished via...
  • Page 16 Storage temperature –40 °C to +70 °C (desiccant) Dimensions and weights Weight 185 kg Dimensions 1200 mm × 570 (645) mm × 765 mm (W x H x D): Transportation Only with transporting handles firmly screwed in. Issue 01/2014 contrAA 700...

  • Page 17: Control Computer Data

    800x600 pixels resolution or higher , CD ROM Ports: – Mouse port – Printer port - USB port (USB 1.1 or 2.0) for contrAA 700 Printer HP DeskJet Ink Jet Printer HP Laser Jet Laser Printer Operating system Windows XP Professional 3.1.3...

  • Page 18: Data For Flame Technique

    300 to 600 kPa (nitrous oxide) Nebulizer flow rates 400 to 600 NL/h 320 to 480 NL/h Auxiliary oxidant 30 to 315 NL/h (air or N Total oxidant 400 to 700 NL/h 320 to 700 NL/h Issue 01/2014 contrAA 700...

  • Page 19: Data Regarding Flame Technique Accessories

    Autosampler with dilution function, completely PC-controlled Sample tray 139/ 15 Sample cups 129 pieces, 15 mL Special cups 10 pieces, 50 mL Sample tray 54/ 50 Sample cups 54 pieces, 50 mL Dosing unit in the Fluidik module 5 mL contrAA 700 Issue 01/2014...
  • Page 20 Power supply 230 V, 50 Hz or 230 V. 60 Hz Weight 28 kg Scraper PC-controlled Power supply Via spectrometer Hg/Hydride Systems HS 60 modular; HS 55 modular; HS 50 Refer to Hg/Hydride Systems user manual. Issue 01/2014 contrAA 700...

  • Page 21: Guidelines And Standards

    DIN EN 61010-1 (VDE 0411T.1; IEC 61010-1)  DIN EN 61010-2-061 (IEC 61010-2-061)  Electromagnetic Compatibility (EMC) The contrAA 700 has been tested for radio interference suppression and noise immunity. It complies with the requirements of DIN ISO 9022-3:2000  DIN ISO 9022-32-03-0 ...

  • Page 22: Installation Requirements

    Hazard from toxic and chemically aggressive substances  Ambient conditions Do not set up the contrAA 700 directly beside a door or window. The installation site  of the contrAA 700 should be free of draft, dust, corrosive vapours and vibration.

  • Page 23: Floor Space Requirements And Weight

    570(645) AS-GF AS-F AS-FD Autosampler Fluidik module HS 60 modular HS 55 modular HS 50 Under the work bench Compressor JUN-AIR ∅ 400 Table 1 Dimensions and weights of the contrAA 700 and its system components contrAA 700 Issue 01/2014...

  • Page 24: Energy Supply

    85 A at the maximum heating rate for a short time (1 s). During this phase, line voltage at the contrAA 700 should not drop by more than 6%. If actual values are found to differ from these specifications, you are requested to consult with us. Adequate accessory units can be additionally supplied.

  • Page 25: Gas Supply

    CAUTION! INSTALLATION OF HIGH-PRESSURE GAS CYLINDERS If fuel gas supply is from high-pressure cylinders, the cylinders must be installed upright in gas cylinder cabinets or mounted to the wall with cylinder holders outside the laboratory room. contrAA 700 Issue 01/2014...

  • Page 26: Laboratory Fume Hood

    CAUTION! TURN SUCTION DEVICE (FUME HOOD) ON FOR NORMAL OPERATION! Do not operate the contrAA 700 without fume hood! Direct waste gas to the outside and avoid blockage! The laboratory fume hood shall exhaust noxious combustion residues of the flame and any produced ozone.

  • Page 27: System Layout And General View

    The samplers for the flame mode AS-F or AS-FD are hung in the right sample chamber of the contrAA 700. The storage bottle for wash liquid of the AS-F or the Fluidik module of the AS-FD are placed next to the AAS device.

  • Page 28: Fig. 2 Top-Side Dimensional View Of Contraa 700

    Installation requirements Fig. 2 Top-side dimensional view of contrAA 700 Fig. 3 Layout view of contrAA 700 Issue 01/2014 contrAA 700...

  • Page 29: Functions And Design Of The Contraa 700

    HCL, such as exit window and emission intensity. In addition, absorption lines or bands of diatomic molecules (PO, CS, ...) can be used analytically for element determination. Atomizer The contrAA 700 is designed to allow the following atomization techniques: contrAA 700 Issue 01/2014...

  • Page 30: Fig. 5 Optical Path In Contraa 700

     The graphite tube atomizer and the burner and nebulizer system (BZS) are firmly installed in the sample compartment of the contrAA 700. For this reason, no retrofitting is required for conversion to another atomization technique. The cell unit of Hg/hydride systems must be mounted onto the mixing chamber in lieu of the burner head.

  • Page 31: Xenon Lamp

    These are achieved by the use of the CCD line detector of the contrAA 700 with extremely low noise compared to the photomultipliers customary in LS AAS and to the use of the high-energy xenon short-arc lamp with its very high light intensity.

  • Page 32: Graphite Tube Atomizer

    Functions and design of the contrAA 700 Graphite tube atomizer The electrothermic atomizer (EA) is an integral part of the contrAA 700. It is also a core part for working in EA mode and HydrEA technique. Furnace jaws Cooling water connector...

  • Page 33: Graphite Tube Furnace

    Functions and design of the contrAA 700 The analytical advantages of the graphite tube technique, in conjunction with the background compensator, consist of the high selectivity and problem-free trace and ultra-trace analysis of real samples with a complex matrix. In the analysis, each sample runs through a furnace program (temperature-time program) with the aim of drying wet samples and of separating out any distorting incidental substances before atomizing.

  • Page 34: Gas Flows In Furnace Shroud

    Functions and design of the contrAA 700 5.3.2 Gas flows in furnace shroud The gas channels for separate supply of the primary gas flow (cleaning gas) and the secondary gas flow (protection gas) are housed in the furnace shroud. Oxidizing or reducing...

  • Page 35: Graphite Tube Variations, Furnace Parts And Inserts

    Functions and design of the contrAA 700 1, 4 Cylinder for the furnace window 2, 3 Mount: Conical attachment Fig. 10 Graphite tube furnace shroud When changing from the normal tube to the platform tube, or to solid analysis, please ensure that the platform tube limits the free opening for the beam on one side.

  • Page 36: Radiation Sensor

    Functions and design of the contrAA 700 Fig. 12 Furnace jacket, adapters and inserts Furnace part / insert Function Platform (sample carrier) Accommodates solids samples. Adjusting aid for SSA 600 Adjusts the solid autosampler SSA 600. Pipetter insert Funnel opening to the pipetting channel.

  • Page 37: Accessories For Graphite Tube Technique

    Functions and design of the contrAA 700 Accessories for graphite tube technique 5.4.1 Autosampler AS-GF The autosampler AS-GF is used in EA mode for feeding liquid samples and in the HydrEA method for feeding reaction gas into the graphite tube.

  • Page 38: Solid Autosamplers Ssa 600 And Ssa 6Z

    Functions and design of the contrAA 700 The AS-GF is hung in the adapters provided in the sample chamber and electrically connected to the contrAA 700. The device parameters of the AS-GF are set with the ASpect CS control software.

  • Page 39: Flame System

    Functions and design of the contrAA 700 Flame system Flame atomic absorption spectroscopy is used for the determination of trace elements in the concentration range from mg/L to µg/L and for the determination of principal components. The technique requires a flame with constant properties. The composition of the flame must be adjusted to the element to be analyzed.

  • Page 40: Fig. 15 Setup Of The Burner-Nebulizer System

    Functions and design of the contrAA 700 evaporates incompletely, the accuracy of the analytical result is adversely affected, as background absorption is increased by the scattering of radiation on unevaporated droplets. Combustion gas supply Siphon Baffle ball Outflow from siphon...

  • Page 41: Fig. 16 Nebulizer Mixing Chamber Burner System

    Functions and design of the contrAA 700 Burner Fixing screw for siphon Fixing screw for burner Siphon Combustion gas supply Connection of siphon sensor Additional oxidant supply Siphon outlet Locking ring for nebulizer Siphon sensor Nebulizer Screw joints of mixing chamber parts...

  • Page 42: Burner And Flame Type

    Functions and design of the contrAA 700 5.5.3 Burner and flame type The contrAA 700 can be operated with the following types of flames and corresponding burners: Acetylene/air flame with 50-mm single-slot burner (standard burner) or 100-mm  single-slot burner for more sensitivity Acetylene/nitrous oxide flame with 50-mm single-slot burner ...

  • Page 43: Accessories For Flame Technique

    Fluidik module is electrically connected to the autosampler and is supplied with operating voltage via the contrAA 700. Standards or samples are diluted in the mixing cup by first placing the concentrate into the mixing cup. Then the diluent is added at a high dosing speed (max.

  • Page 44: Jun-Air 6/S Piston Compressor

    Functions and design of the contrAA 700 Sample tray with cover Storage bottle for diluent Autosampler arm Fluidik module dosing unit (5000 µL) Storage bottle for washing liquid Fig. 18 Autosampler AS-FD with separate Fluidik module 5.6.2 JUN-AIR 6/S piston compressor If no in-house compressed-air supply is available, it is useful to use a compressor that produces the air required for the acetylene/air flame.

  • Page 45: Scraper - Automatic Burner Head Cleaner For Nitrous Oxide Flame

    Functions and design of the contrAA 700 Control cable port Tube to washing solution Support Short piece of tube to nebulizer capillary Sample tube Fig. 19 SFS6 injection module 5.6.4 Scraper – Automatic burner head cleaner for nitrous oxide flame The Scraper, an intelligent burner head cleaner, is recommended for the continuous and fully automated operation with the nitrous oxide flame.

  • Page 46: Hpt Burner Head

    Functions and design of the contrAA 700 The scraper is attached to the burner head with the help of two knurled thumb screws. It can be removed if not required. The scraper can be retrofitted to a 50mm burner. 5.6.5...

  • Page 47: Installation And Start-Up

    700 installation work package. The main power switch is located on the right-hand side of the contrAA 700. Also located on the right-hand side are the terminals for PC and accessory units in easily accessible positions.

  • Page 48: Fig. 23 Connector Strip With Supply And Control Connector Terminals

    Extra gas supply port for graphite furnace (standard: argon) Inert gas supply port for graphite furnace (argon) Fig. 24 Rear panel view of contrAA 700 with ports and terminals for gas and electric power supply, including fuse holders Issue 01/2014 contrAA 700...

  • Page 49: Installing And Connecting The Contraa 700

    76). Provide electrical connections for contrAA 700 operation (refer to section "Energy supply" p. 22). Use USB cable for connection between PC and contrAA 700 (3 in Fig. 22 p. 45). Further required working steps: − Install ASpect CS software.

  • Page 50: Installation And Start Of Aspect Cs Software

    The graphite tube furnace comes factory-adjusted. Its supply facilities for gas and cooling water are firmly attached to the graphite tube furnace. A cooling water tank is located behind the protective cover below the furnace space. Issue 01/2014 contrAA 700...

  • Page 51: Fig. 26 Terminals At Graphite Tube Furnace

    Furnace window Vertical adjustment Fuse at graphite furnace Cooling water terminals Illuminator for furnace camera Heavy current cable Radiation sensor Gas inlet, black tube Gas inlet, black tube Furnace window Fig. 26 Terminals at graphite tube furnace contrAA 700 Issue 01/2014...

  • Page 52: Software Presettings For Graphite Tube Technique

    Analyzes liquid samples (uses AS-GF as autosampler). AMPLE LIQUID STATE Analyzes solid samples (uses SSA 600 or SSA 6z). SOLID Only with liquid samples. UBE TYPE Uses IC graphite tube. Uses IC graphite tube with 1-PIN platform. LATFORM Issue 01/2014 contrAA 700...

  • Page 53: Inserting The Graphite Tube Into The Graphite Tube Furnace

    Close graphite tube furnace by clicking the [C ] control button. LOSE FURNACE Enter parameter settings for H and L in T subarea as required for EAT CYCLES IFE TIME the currently installed graphite tube. contrAA 700 Issue 01/2014...

  • Page 54: Graphite Tube Formatting

     format a newly inserted graphite tube,  clean the furnace after a break in operation.  The furnace must be formatted: after turning the spectrometer on  after closing the previously open furnace  Issue 01/2014 contrAA 700...

  • Page 55: Cleaning The Graphite Tube / Cleanout

    [°C/ 500° C/s 500° C/s 10 s Do not select a higher hold time than 10 s otherwise this may exceed the load limit of the furnace. Clean out or evaporation can be repeated several times. contrAA 700 Issue 01/2014...

  • Page 56: Completing And Installing The As-Gf Autosampler

    6.5.1 Installing AS-GF VORSICHT! ELECTRONICS MAY BE DAMAGED! Turn the contrAA 700 off before beginning work for installation of the AS-GF! Action for making or breaking an electrical plug-in contact may cause a short with destroying effect. Left support in the sample chamber...

  • Page 57: Fig. 31 Aligning The As-Gf With The Furnace Using The Set Screw And Adjusting Screw

    Place and fix the sample tray on the axis of the AS-GF. Place the sample cover until it sits in the guide rail. 10. Switch on the computer and the contrAA 700, wait for the initialization steps to complete, start the Aspect CS software.

  • Page 58: Adjusting The As-Gf

    Start the adjustment using the [A ] button. LIGN TO FURNACE Follow the prompts in the dialog fields of the software. In the running program the following takes place: − Alignment of the AS-GF with the furnace Issue 01/2014 contrAA 700...
  • Page 59 Next step: fill the wash bottle. If necessary, empty the waste bottle and dispose of the waste correctly. Measure. IMPORTANT The population of the sample tray must match the software configuration in the method or in the sample ID. contrAA 700 Issue 01/2014...

  • Page 60: Uninstalling The Autosampler As-Gf

    Installation and start-up 6.5.3 Uninstalling the autosampler AS-GF Switch off the contrAA 700! For HydrEA coupling: Remove the reaction gas tube from the titan canula. Remove the titan canula from the autosampler arm, by loosening the clamp nut. Remove the control cable from the socket in the right side wall of the AAS device (autosampler graphite connection).

  • Page 61: Flame Technique

    Connecting sockets for siphon sensor, injection switch SFS 6 and scraper Fixing screw for holder bracket of burner- nebulizer system unit Vertical adjustment of burner-nebulizer system unit Fig. 33 Terminals at the burner-nebulizer system unit available for flame technique contrAA 700 Issue 01/2014...

  • Page 62: Software Presettings For Flame Technique

    The SFS6 injection switch can be optionally used. WARNING! ELECTRONICS MAY BE DAMAGED! Turn the contrAA 700 off before beginning work for installation! Action for making or breaking an electrical plug-in contact may cause a short with destroying effect.

  • Page 63: Fig. 35 Flame Technique, Manual Sample Delivery

    Connect fuel gas (tube with red marking) (14 in Fig. 33 p. 59) − Connect oxidant (tube with 2 blue markings) (11 in Fig. 33 p. 59) − Connect additional oxidant (tube with 1 blue marking) (13 in Fig. 33 p. 59) contrAA 700 Issue 01/2014...
  • Page 64 11. Attach the aspiration tube to the nebulizer canula. 12. Hang the safety glass in and slide it in front of the burner. 13. Switch on the contrAA 700 and start the software. Deinstallation for manual sample feeding Turn the contrAA 700 off.

  • Page 65: Installation For Continuous Operation Mode / With Samples Delivered By Autosampler

    Flame mode, continuous with autosamplers AS-FD and SFS 6 CAUTION! RISK OF DAMAGE TO THE ELECTRONICS! Switch off the contrAA 700 P prior to any installation! Connecting or disconnecting electrical contacts might damage the sensitive electronics of the contrAA 700.
  • Page 66 Plug the control cable into "Sampler flame" connection on the right-hand wall of the contrAA 700 (7 in Fig. 23 p. 46) and lock it in place. Attach the outlet tube to the outlet connector of the autosampler (backplate, 4 in Fig.

  • Page 67: Fig. 37 Rear Of The Autosampler As-Fd

    Screw the second tube end to the valve (2 in Fig. 38) Screw the dosing tube for the diluent (encased, marking "1") to the second connection of the valve (3 in Fig. 38). Immerse the hose for the wash liquid (marking "2") into the storage bottle. contrAA 700 Issue 01/2014...

  • Page 68: Uninstalling The Autosampler As-F/As-Fd

    Installation of SFS 6 injection module Installing SFS 6 injection module Tube connecting to sample/autosampler Communication cable to controller Tube connecting to nebulizer Tube connecting to rinsing solution Fig. 39 SFS 6 installed at the contrAA 700 for manual sample delivery Issue 01/2014 contrAA 700...

  • Page 69: Replacement Of Burner

    The scraper is delivered ready installed on the 50 mm burner upon request. It can also be retrofitted to a 50 mm burner. contrAA 700 Issue 01/2014...

  • Page 70: Fig. 40 Screws In Front-Side Burner Jaw

    (3 in Fig. 41). Fig. 40 Screws in front-side burner jaw Fixing rail for scraper Knurled thumb screws Guide pins Fig. 41 Fixing rail with burner mounted / knurled thumb screws at scraper Issue 01/2014 contrAA 700...

  • Page 71: Operation Of The Hpt Burner Head

    6.7.1 Turn-on sequence, daily start of work Turn power to the contrAA 700 on: Actuate green ON/OFF switch at the right lateral wall panel for this purpose. Turn PC on and wait for computer program to be completely initialized. The monitor will display some application icons, among them the ASpect CS program icon.

  • Page 72: Turn Off Sequence

    ASpect CS session will be terminated after a delay time of 30 seconds. Ramp PC down. Transfer all main power switches into Off position (in this order): − − − Printer − Compressor  The AAS system is completely shut down. Issue 01/2014 contrAA 700...

  • Page 73: Care And Maintenance

    Turn power off and remove the line power plug from its socket before you proceed to service work of any kind on the contrAA 700. Removal of the line power plug will safely break line power supply to the contrAA 700. After turning off with the main power switch, some parts of the spectrometer, including its outlet socket, will continue to carry line voltage.

  • Page 74: Table 7 Maintenance Summary Table

    Recirculation cooling of Xe-lamp and graphite tube furnace Compensation tank Check compensation tank for fill level. Monthly Refill tap water as necessary. Fans (in back wall) Keep dirt/contamination away At any time Table 7 Maintenance summary table Issue 01/2014 contrAA 700...

  • Page 75: Basic System Unit

    Make sure to switch off the contrAA 700 before changing a fuse! Protective fusing is located at the back of the contrAA 700, at the terminals bar and the sample compartment of the graphite tube furnace. All fuses are provided with special labelling.

  • Page 76: Cleaning The Sample Compartments

    Care and maintenance the furnace is still heating can be avoided. If the second safety circuit has switched off the power supply, the error message "Timeout autosampler" appears when the contrAA 700 with graphite tube technique is reactivated. The second safety circuit can be reactivated manually: Open the right front door of the lamp chamber.

  • Page 77: Removing And Installing The Xenon Lamp

    Removing and installing the xenon lamp WARNING! ELECTRIC SHOCK! Switch off the contrAA 700 at the mains switch. It is very important that you also remove the mains plug from the 35 A connection before replacing fuses! CAUTION! CONTAMINATION OF THE LAMP WINDOW!

  • Page 78: Check Cooling Water Level

    Check cooling water level Inspect for proper cooling water level on a monthly basis. The tank containing the liquid volume for cooling the graphite tube furnace and the xenon lamp is located below the graphite tube furnace. Issue 01/2014 contrAA 700...

  • Page 79: Fig. 46 Cooling Water Tank Below Graphite Tube Furnace

    Refill cooling water tank with tap water until water level reaches 2 cm above the upper edge of the square tank. Screw on cover with moderate force. Screw cooling water level sensor firmly on. Attach cover sheet with the help of screws. contrAA 700 Issue 01/2014...

  • Page 80: Maintaining The Graphite Tube Furnace

    Remove the furnace window from the cleaning bath (use plastic tongs or similar, do not touch optical surfaces) and rinse under deionized water (<1 µS/cm). Blow dry with compressed air or argon. Re-attach the furnace windows. The furnace windows are tilted in the holders. Identical markings must face upward! Issue 01/2014 contrAA 700...

  • Page 81: Cleaning The Graphite Surfaces

    Cleaning the graphite surfaces The graphite surfaces must be cleaned after daily use as required. Switch on the contrAA 700 and start the ASpect CS software (the movable furnace part must be pressurized to be opened/closed). In ASpect CS use to open the F window.

  • Page 82: Cleaning And Changing The Graphite Tube

    Inserting tool for furnace jacket Face spanner Ratchet wrench Fig. 48 Furnace tools Switch on the contrAA 700 and start the ASpect CS software (the movable furnace part must be pressurized to be opened/closed). In ASpect CS use to open the F window.
  • Page 83 Unscrew the press-out tool from the furnace part completely. Pull the furnace window off of the furnace jacket and remove the pipetter insert. contrAA 700 Issue 01/2014...
  • Page 84 Caution! Risk of breaking the electrode! Make sure that the electrode and the furnace part are parallel when positioning and inserting the electrode. If the electrode is unintentionally positioned askew, remove completely and start again. Issue 01/2014 contrAA 700...
  • Page 85 19. Screw in the covering screw at the rear of the fixed furnace part by hand. 20. Attach the furnace window to the furnace jacket and insert the pipetter insert. Caution! Similar markings at the furnace windows must face upward. contrAA 700 Issue 01/2014...
  • Page 86 The connecting rod must be in the front position. 27. Screw the covering screw to the movable furnace part. 28. Close the furnace with the [C ] button. LOSE FURNACE Issue 01/2014 contrAA 700...

  • Page 87: Burner-Nebulizer System

    WARNING! SERIOUS RISK OF BURNING! Allow the burner to cool down before attempting any service or maintenance work. Take burner-nebulizer system apart. Clean burner. Clean nebulizer. Clean siphon. Clean mixing chamber. Assemble burner-nebulizer system. Adjust burner-nebulizer system (optimize flame). contrAA 700 Issue 01/2014...

  • Page 88: Disassemble Burner-Nebulizer System Unit

    Nebulizer with connection for oxidant and connection for sample tube Mixing chamber head with connections for gases, nebulizer and siphon Siphon Connection for fuel gas Siphon sensor Connection for additional oxidant Fig. 50 Mixing chamber and nebulizer disassembled Issue 01/2014 contrAA 700...

  • Page 89: Clean Burner

    Clean burner Clean the burner, exposing it to a jet of running water. Clean the burner, keeping it for 5 to 10 minutes in an ultrasound bath of 0.1% HNO with the burner jaws facing down. contrAA 700 Issue 01/2014...

  • Page 90: Fig. 52 Fittings Of The Burner

    When the spacers protrude over the upper side of the burner jaws, the scraper can get caught and burn! Burner jaw fittings against each other Fittings of the burner jaws with the burner body Dowel pins on the underside of the burner jaws Fig. 52 Fittings of the burner Issue 01/2014 contrAA 700...

  • Page 91: Clean Nebulizer

    Mixing chamber tube and chamber head: Clean with saltpeter, diluted mineral acid, or the appropriate solvent according to the substances analyzed. If the mixing chamber is cleaned with a diluted mineral acid, wash thoroughly with distilled water after cleaning. contrAA 700 Issue 01/2014...

  • Page 92: Clean Siphon

    11. Screw the tube for fuel gas (red marking) on the connector. 12. Screw the tube for oxidant (1 blue mark) on the connector. 13. Connect the tube for oxidant (2 blue marks) to the nebulizer connector. Issue 01/2014 contrAA 700...

  • Page 93: Cleaning The Sensor Of The Burner

    (10 in Fig. 49). 2. Clean the sensor cautiously with the help of a little brush, for example a toothbrush, using alcohol, for example Isopropanol. 3. Reinstall the burner-nebulizer-system on the holding bow. Fig. 56 Sensor of the burner contrAA 700 Issue 01/2014...

  • Page 94: Autosampler As-Gf

    The dosing tube must be washed prior to and after work. Washing solution is taken from the storage bottle, pumped via the dosing syringe into the dosing tube and dispensed into the wash cup. Switch on the contrAA 700 and start the ASpect CS software. In ASpect CS open the window A with...

  • Page 95: Servicing The Dosing Tube

    Shorten the dosing tube  Replace the dosing tube  Tube holder Dosing tube Tube holder Screw top at the dosing unit Tube guide lock screw Tube guide clamp nut Fig. 58 Dosing tube at the AS-GF contrAA 700 Issue 01/2014...
  • Page 96 The following cleaning procedure should be repeated as often as is necessary. Fill the sodium hypochlorite solution into a 5 mL special cup and mount tray position 101 with it. Switch on the contrAA 700 and start the ASpect CS software. In ASpect CS open the window A with .

  • Page 97: Replacing The Metering Syringe

    Dosing syringe, consisting of piston and glass cylinder Attachment screw Drive rod Fig. 59 Dosing unit at AS-GF and AS-FD Switch on the contrAA 700 and start the ASpect CS software. In the window M Select technique: G (AS-GF) or F (AS-FD). ETTINGS...

  • Page 98: Clean-Up After Cup Overflow

    Washing the mixing cup prior to and after the measurement In ASpect CS open the window A with UTOSAMPLER In the tab T enter a volume of 25 mL in the group W ECHN PARAMETERS ASH MIX CUP Issue 01/2014 contrAA 700...

  • Page 99: Replacing The Canulas And Guide On The Autosampler Arm Of The As-Fd

    Insert the new canula and fix with the clamp nut. CAUTION! RISK OF FRACTURE! Set the canula height for it to terminate 1-2 mm above the washing cup. Plug the intake tube onto the new canula. contrAA 700 Issue 01/2014...

  • Page 100: Replacing The Intake Tube

    In the area P enable the checkbox M to start the pump. UMPS IX CUP PUMP Run the pump until the liquid has been drained off. Disable the checkbox M , to stop the pump IX CUP PUMP Issue 01/2014 contrAA 700...

  • Page 101: 7.7 Compressor Jun-Air 6/S

    Allow air to escape from time to time by turning the knurled nut. The valve position is thus prevented from sticking and the functioning is guaranteed. Note: Do not damage the seal and do not alter the setting of the safety valve! contrAA 700 Issue 01/2014...

  • Page 102: Transportation Of The Contraa 700

    The contrAA 700 is too heavy for two persons (→ Section "Technical data of contrAA 700" p. 13). In addition, it is not possible to get an adequate grip for transport without the screw-in handles. There is a risk of injury if transport is attempted without using the handles or by too few people.

  • Page 103: Disposal

    Once neutralized, such waste must be made available for proper disposal in accordance with currently valid rules of law. Under currently binding legislation, the contrAA 700, including its electronic components, must be disposed as electronic waste on expiry of the rated service life.

  • Page 104: Abbreviations / Terms

    Identity and weight. Identity data and weight/mass of a sample. Continuum source Radiator, the radiation of which is continually distributed over a large wavelength range. The contrAA 700 uses a xenon lamp as an excitation source. Neutral value solution Solution which contains the chemicals used for creating the sample solution and also the components which influence the measurement in the same or similar concentration as the sample to be analyzed.
  • Page 105 The stock solution is used for making reference solutions. Background Evaluation of measurement value with no background. The compensation background compensation occurs simultaneously. Background Measurement of the spectral background in the environment or measurement under the analysis line. contrAA 700 Issue 01/2014...

  • Page 106: Ec Declaration Of Conformity

    EC Declaration of Conformity EC Declaration of Conformity Issue 01/2014 contrAA 700...

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