Buchi KjelFlex K-360 Operation Manual
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Buchi KjelFlex K-360 Operation Manual

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KjelFlex K-360
Operation Manual
093176D en

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Summary of Contents for Buchi KjelFlex K-360

  • Page 1 KjelFlex K-360 Operation Manual 093176D en...
  • Page 2 E-Mail: quality@buchi.com BUCHI reserves the right to make changes to the manual as deemed necessary in the light of experi- ence; especially in respect to structure, illustrations and technical detail. This manual is copyright. Information from it may not be reproduced, distributed, or used for competi- tive purposes, nor made available to third parties.

  • Page 3: Table Of Contents

    No technical modifications may be made to the instrument without the prior written agreement of Buchi. Unauthorized modifications may affect the system safety or result in accidents. This manual is copyright. Information from it may not be reproduced, distributed, or used for competi- tive purposes, nor made available to third parties.
  • Page 4 After distillation ........46 Switching ON/OFF checklist......46 KjelFlex K-360 Operation Manual, Version D...
  • Page 5 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 KjelFlex K-360 Operation Manual, Version D...

  • Page 6: About This Manual

    1 About this manual About this manual This manual describes the KjelFlex K-360 and provides all information required for its safe operation and to maintain it in good working order. It is addressed to laboratory personnel in particular. NOTE The symbols pertaining to safety messages are explained in chapter 2.

  • Page 7: Safety

    Supplementary text, describing the kind and level of hazard / risk seriousness. supplementary • List of measures to avoid the herein described, hazard or hazardous situation. safety • ‫״‬ ‫״‬ information • ‫״‬ ‫״‬ symbols. • ‫״‬ ‫״‬ KjelFlex K-360 Operation Manual, Version D...
  • Page 8 Paragraphs starting with NOTE transport helpful information for working with the device / software or its supplementaries. NOTEs are not related to any kind of hazard or damage (see below example). NOTE Useful tips for the easy operation of the instrument / software. KjelFlex K-360 Operation Manual, Version D...

  • Page 9: User Qualification

    • if the instrument is not operated according to its proper use. Safety warnings in this manual (as discribed in section 2.1 ff) serve to make the user alert and to avoid hazardous situations emanating from residual dangers by giving appropriate counter meassured. KjelFlex K-360 Operation Manual, Version D...

  • Page 10: General Hazards And Safety Measures

    • Optional level sensors for reagent and waste tank: A running distillation is interrupted when the tanks are too full or too empty respectively. • Drip tray: Collects overflowing liquids. • Automatic chemical dosage: Ensures the use of homogeneous liquid amounts. KjelFlex K-360 Operation Manual, Version D...

  • Page 11: General Safety Rules

    Modifications to the instrument are only permitted after prior consultation with and with the written approval of the manufacturer. Modifications and upgrades shall only be carried out by an authorized Buchi technical engineer. The manufacturer will decline any claim resulting from unauthorized modifi- cations.

  • Page 12: Technical Data

    3 .1 Scope of delivery Check the scope of delivery according to the order number. NOTE For detailed information on the listed products see www.buchi.com or contact your local dealer. 3 .1 .1 Standard instrument Table 3-1: Standard instrument Product...

  • Page 13: Standard Accessories

    1 cap for 10 L tanks, large 25869 k 12 tank labels 43434 l 1 cap for 10 L and 20 L tanks, small 43477 Operation Manual: English 93176 German 93177 French 93178 Italian 93179 Spanish 93180 KjelFlex K-360 Operation Manual, Version D...

  • Page 14: Optional Accessories K-360

    External PC keyboard (D) 31457 External dosage device for back titration, 43367 115 V External dosage device for back titration, 43596 230 V Cable for external dosage device for back 43621 titration (Schott Titronic) KjelFlex K-360 Operation Manual, Version D...
  • Page 15 Connection cable to: Mettler (DL15 / 22) titrator 43616 Metrohm (785 / 719 / 702) 43617 Mettler (Txx) titrator Metrohm (848) titrator 11055333 Schott titrator 43618 Radiometer titrator 43619 Adapter for Metrohm 719 / 702 47803 KjelFlex K-360 Operation Manual, Version D...

  • Page 16: Technical Data K-360

    31 °C decreasing linearly to 67% relative humidity at 35 °C Installation category Pollution degree Dimensions (W x H x D) 405 x 660 x 400 mm Weight 22 kg Printer interface USB 2.0, PCL 6 KjelFlex K-360 Operation Manual, Version D...

  • Page 17: Titration Solution

    8.0 % N 11.42 mL General recommendation Hydrochloric acid has the disadvantage of degassing. Therefore BUCHI recommends to use sulfuric acid as titrant. The correction factor for self prepared solutions is called a titer. The use of standardized titration solutions make a titer determination unnecessary.

  • Page 18: Materials Used

    Steam generator isolation Ceramic fiber Multitherm 550 Steam generator housing Stainless steel 1.4301 Protective door Polymethyl methacrylate PMMA Condenser cover Polymethyl methacrylate PMMA Connecting stopper Hypalon Plastic splash protector Glass fiber reinforced polypropylene Stop-cock Polypropylene/polyethylene PP/PE KjelFlex K-360 Operation Manual, Version D...

  • Page 19: Description Of Function

    This chapter explains the basic principle of the instrument, shows how it is structured and gives a functional description of the assemblies. 4 .1 Instrument overview a Splash protector d Condenser b Sample tube e Operating panel c Protective door f Service door Fig. 4.1: Instrument overview KjelFlex K-360 Operation Manual, Version D...

  • Page 20: Function Principle

    4 Description of function 4 .2 Function principle The KjelFlex K-360 is suitable for determining nitrogen using the Kjeldahl (TKN; Total Kjeldahl Nitrogen) and Devarda methods as well as for other distillations of steam-volatile substances (e.g. of alcohol, , volatile acids).
  • Page 21 Let the system cool down before performing any service. • Do not operate the instrument when enclosure is open or removed. Notice Wrong stop-cock setting will result in system overpressure. Tubing may come off. • Set stop-cock to correct working-position. KjelFlex K-360 Operation Manual, Version D...

  • Page 22: Operational Elements Of The Instrument

    Enter button to move forward within the sub- menu structure g Escape button h Delete button to delete a digit entered via the keypad i Keypad Fig. 4.6: Controls of the instrument KjelFlex K-360 Operation Manual, Version D...

  • Page 23: Putting Into Operation

    Mains voltage must match the voltage reading on the type plate. • Instrument must be earthed by the mains socket. • Only use a molded 3-pole device plug (IEC-60320, type C13 or C15). • Do not use damaged cables. KjelFlex K-360 Operation Manual, Version D...

  • Page 24: Reagent And Water Connections

    Place the drain hose for the cooling water directly into the drain. For this purpose, shorten the silicone hose to the optimal length. The drain hose should not show any kinks, sharp bends and/or siphoning effect. Prevent flooding inside and outside the instrument by securing the drain hose. KjelFlex K-360 Operation Manual, Version D...

  • Page 25: Waste/Aspiration Hoses

    Possible instrument damage by calcification or corrosion. • Use only distilled water in the H O storage tank to operate the system. • Do not mix up liquids at the instrument inlets, observe the inlet labelling. KjelFlex K-360 Operation Manual, Version D...

  • Page 26: Level Sensors (Optional)

    5 Putting into operation 5 .4 Level sensors (optional) Level sensors are optionally available for all Buchi tanks. The individual sensors are connected to the corresponding socket. O: Connection to the tank with distilled water for the steam generator and sample tube.

  • Page 27: Connecting A Printer

    Special functions on the external keyboard are: Table 5-1: External keyboard K-360 keyboard External keyboard START STOP Function key below display F5...F8 Other functions (e. g. up/down) are the same as on the internal keyboard. KjelFlex K-360 Operation Manual, Version D...

  • Page 28: Boric Acid Titration And Back Titration

    It is recommended to choose a permanent configuration as different hardware is needed to convert between the two titration methods. Buchi recommends to work with boric acid titra- tion. Boric acid titration Receiving vessel: Boric acid solution 2 % or 4 %, adjusted to pH 4.65.

  • Page 29: Operation

    WARNING Serious chemical burnings by corrosives. • Observe supplementary data sheets of all used chemicals. • Wear protective goggles. • Wear protective gloves. • Wear protective clothing. NOTE Close unused connections with plug caps. KjelFlex K-360 Operation Manual, Version D...

  • Page 30: Overview Over The Software Structure

    Titration Start Titr. Type Stirrer Speed Aspiration Sample / Receiver 4 Cleaning Cleaning Method Steam Power Distillation Time 5 Aspiration Aspiration Method Aspirate Sample Aspirate Receiver 6 Results Result List 7 Methods Method List KjelFlex K-360 Operation Manual, Version D...
  • Page 31 8 Configuration Reagent Pump Print Data 4 Titrator Titrator Present Titrator Signals Signal “ready” Dispenser Signals 5 Dispenser Signal “active” Signal “end” 6 User / Password User / Password List 7 Keypad Keypad Time KjelFlex K-360 Operation Manual, Version D...
  • Page 32 2 Test Sensor Level Sensors 9 Diagnostics Titrator Dispenser Voltage Temperature Print Page 3 Test Printer Formfeed Reset Steam Generator 4 Operating Hours Number of Distillations Production Date Serial Number 5 Hardware Info 6 Service Test KjelFlex K-360 Operation Manual, Version D...

  • Page 33: General Information On Buttons

    Switch to offline operation in the Operational Tests screen Switch to online operation in the Operational Tests screen Run the pump in the Pump Calibration screen Calibrate the pump in the Pump Calibration screen KjelFlex K-360 Operation Manual, Version D...

  • Page 34: Overview On How To Prepare The Instrument For Routine Operation

    The distillation methods you like to use can be defined in the menu Method. For this purpose you use an existing Buchi standard method and modify it to your needs. Thus you can define up to 50 indi- vidual methods according to e.g. distillation time, aspiration yes/no, volume of boric acid/NaOH/water, etc.

  • Page 35: Individual Working Method

    To access the individual menus you can either use the arrow keys to move up and down in the list and press Enter or the Forward button or you can type in the number of the corresponding menu directly (e.g. 3 for Settings). KjelFlex K-360 Operation Manual, Version D...

  • Page 36: Pump Calibration

    6 .4 .2 Setting date and time Go to Set Date and Time and press Enter. The following screen appears: Fig. 6.4: Date/Time Enter the corresponding settings via keypad and press Save to store them. KjelFlex K-360 Operation Manual, Version D...

  • Page 37: Defining General Instrument Settings

    Go to Titrator and press Enter. The following screen appears: Fig. 6.6: Titrator Press Edit to edit the settings. By changing the number at “Titrator present” the settings for the titra- tors listed in the following table will be adjusted automatically. KjelFlex K-360 Operation Manual, Version D...

  • Page 38: Boric Acid / End Point Titration

    Defining settings without a titrator Configuration > Settings > Rec Vessel Present: No Configuration > Titrator: Titrator present: No Methods > Select the corresponding method from the method list and press Enter > Aspiration Sample: Yes KjelFlex K-360 Operation Manual, Version D...

  • Page 39: Back Titration With Dispenser

    Table 6-2: Dispenser settings Configuration Signal ready Signal active Signal end Schott Titronic universal 60 s 6 .4 .7 Defining user and password settings Go to User/Password and press Enter. The following screen appears: Fig. 6.8: User/Password KjelFlex K-360 Operation Manual, Version D...

  • Page 40: Defining The Keypad Settings

    A password is not mandatory. • When a password is used the corresponding user is indicated on the result printout list. • When a password is forgotten, the determination can be started with the Buchi default login: User name: buchi, password: buchi01.

  • Page 41: Defining A Distillation Method

    (acid). A list of all defined methods is displayed on pressing the List button: Fig. 6.12: Method list To print out a method, highlight the method-name in the list and press Print. KjelFlex K-360 Operation Manual, Version D...

  • Page 42: Instrument Modes

    6 .7 .4 Aspiration With this procedure sample residue in the sample tube and titration residue in the receiving vessel can be aspirated. KjelFlex K-360 Operation Manual, Version D...

  • Page 43: Carrying Out A Distillation

    • When you re-enter the screen, sample name, weight, unit, type and method are set to the latest entered settings. • You can start a determination at any time without a sample name or weight input. KjelFlex K-360 Operation Manual, Version D...

  • Page 44: Rack Oriented Analysis

    Current process step e Name of currently processed sample f Current date and time g User currently logged in Fig. 6.16: Analysis screen KjelFlex K-360 Operation Manual, Version D...

  • Page 45: Result Screen

    Last button to define your selection. Now press Print. For a detailed printout of a result, highlight a single result in the list and press Print. KjelFlex K-360 Operation Manual, Version D...

  • Page 46: After Distillation

    • Start the cleaning process (see chapter 7.12). • Rinse the acid resistant pump with distilled water (in case it was used for the dosage of strong acids, e.g. HCl). • Switch off the instrument. • Close the main water tap. KjelFlex K-360 Operation Manual, Version D...

  • Page 47: Maintenance

    Observe supplementary data sheets of all used chemicals. • Wear protective goggles. • Wear protective gloves. • Wear protective clothing. Note The service door may only be opened for maintenance or service purposes and to switch the stop- cock KjelFlex K-360 Operation Manual, Version D...

  • Page 48: Daily Maintenance

    To extend the lifetime of the glass parts, we recommend to perform a cleaning at the end of the day. For this purpose in the main menu select “Cleaning” and press the Start button. The system will start a distillation with 300 mL water for a period of 5 minutes. KjelFlex K-360 Operation Manual, Version D...

  • Page 49: Cleaning The Rubber Bung Seal

    When unmounting the splash protector for cleaning, clean the seal as well to prolong its lifetime. Rinse it with water, dry it with a soft cloth, remount it and put the splash protector back in place. KjelFlex K-360 Operation Manual, Version D...

  • Page 50: Replacing The Splash Protector

    Accessories splash protector b Gasket for splash protector, complete c SVL 22 sealing Make sure that the instrument is cooled down. Open the service door and loosen the two tubings shown on the picture. KjelFlex K-360 Operation Manual, Version D...
  • Page 51 Now unscrew the black plastic screw with a polygrip. Make sure to do this gently as you might break the glass parts. This part of the procedure is the most critical one. Carefully remove the splash protector. Unscrew the gasket. KjelFlex K-360 Operation Manual, Version D...

  • Page 52: Glass Parts

    7 .3 .5 Replacing the hoses Depending on the applications and the used chemicals, it might be necessary to replace some of the hoses inside of the instrument to avoid leakages or aspiration problems. KjelFlex K-360 Operation Manual, Version D...

  • Page 53: Yearly Maintenance

    Addresses of official Buchi customer service offices are given on the Buchi website under: www.buchi.com. If malfunctions occur on your instrument or you have technical questions or applica- tion problems, contact one of these offices.

  • Page 54: Troubleshooting

    “Corrective measure”. The elimination of more complicated malfunctions or errors is usually performed by a Buchi technical engineer who has access to the official service manuals. In this case, please refer to your local Buchi customer service agent.
  • Page 55 Do you want to continue determination determination? Battery voltage low. Call the Buchi service to replace the battery Unit supply voltage was too low! Please Check the power supply source in your lab switch off unit and start again.

  • Page 56: Diagnostics

    Operational Tests This submenu enables to test the following components: • Valves • Pumps • Stirrer • Alarm • Steam Unit Heating • Titrator Out (Titrator suitable) • Dispenser Out (Dispenser suitable) • Battery Monitor KjelFlex K-360 Operation Manual, Version D...

  • Page 57: Test Sensors

    This submenu indicates some hardware information, e.g. part and serial numbers and the production date of the instrument. 8 .2 .6 Service Test This submenu enables the instrument manufacturers or service technicians to carry out a functionality test of the instrument. KjelFlex K-360 Operation Manual, Version D...

  • Page 58: Shutdown, Storage, Transport And Disposal

    Wear protective goggles. • Wear protective gloves. • Wear protective clothing. To empty the steam generator, proceed as follows: • Turn off the instrument. • Let the steam generator cool down for 30 minutes. KjelFlex K-360 Operation Manual, Version D...

  • Page 59: Storage And Transport

    To dispose of the instrument in an environmentally friendly manner, a list of materials is given in chapter 3. This helps to ensure that the components are separated and recycled correctly. Please follow valid regional and local laws concerning disposal. KjelFlex K-360 Operation Manual, Version D...

  • Page 60: Spare Parts

    Spare parts This chapter lists spare parts, accessories, and options including their ordering information. Order the spare parts from Buchi. Always state the product designation and the part number when ordering spare parts. Use only genuine Buchi consumables and genuine spare parts for maintenance and repair to assure good system performance and reliability.
  • Page 61 Cap for 10 L and 20 L tanks, small 43477 Drip tray 43302 Set of sealings EPDM / NBR for cooling 40043 water hose Sealing special complete (to universal 43116 adapter) Aspiration hose special, PTFE 43119 (universal adapter) KjelFlex K-360 Operation Manual, Version D...

  • Page 62: Hosing Connection Schemes

    Cooling water valve in k Sample tube e Boric acid pump l Expansion vessel O steam generator pump m Steam generator g NaOH pump n Waste tank Fig. 10.1: Hosing connection scheme Standard KjelFlex K-360 Operation Manual, Version D...
  • Page 63 Cooling water valve in k Sample tube e Boric acid pump l Expansion vessel O steam generator pump m Steam generator g NaOH pump n Waste tank Fig. 10.2: Hosing connection scheme Titration KjelFlex K-360 Operation Manual, Version D...
  • Page 64 Cooling water valve in m Sample tube f Boric acid pump n Expansion vessel O steam generator pump o Steam generator h NaOH pump p Waste tank Fig. 10.3: Hosing connection scheme Standard with acid-resistant pump KjelFlex K-360 Operation Manual, Version D...
  • Page 65 Cooling water valve in m Sample tube f Boric acid pump n Expansion vessel O steam generator pump o Steam generator h NaOH pump p Waste tank Fig. 10.4: Hosing connection scheme with acid-resistant pump and titration KjelFlex K-360 Operation Manual, Version D...
  • Page 66 Hose connector 29646 Impeller meter 43582 T-piece, PVDF 27738 Hose clamp Ø 9.6 43202 Hose clamp Ø 10.7 43841 Hose clamp Ø 11.9 43297 Hose clamp Ø 7.6 14295 Cable tie 4.8 x 178 mm KjelFlex K-360 Operation Manual, Version D...

  • Page 67: Declarations And Requirements

    L’utilisation de cet appareil dans les zones résidentielles peut causer des interférences néfastes, auquel cas l’exploitant sera amené à prendre les dispositions utiles pour palier aux interférences à ses propres frais. KjelFlex K-360 Operation Manual, Version D...

  • Page 68: Index

    External keyboard ........27 KjelFlex K-360 Operation Manual, Version D...
  • Page 69 Result screen ......... 45 KjelFlex K-360 Operation Manual, Version D...
  • Page 70 Waste hose ......... . 25 KjelFlex K-360 Operation Manual, Version D...
  • Page 72 T +55 19 3849 1201 F +66 2 862 08 54 F +971 4 313 2861 F +55 19 3849 2907 bacc@buchi.com middleeast@buchi.com latinoamerica@buchi.com www.buchi.com www.buchi.com www.buchi.com We are represented by more than 100 distribution partners worldwide. Find your local representative at: www.buchi.com...

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