KERN DBS 60-3 Operating Instructions Manual
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KERN DBS 60-3 Operating Instructions Manual

Electronic moisture analyser
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Operating instructions
Electronic Moisture Analyser
KERN DBS
Version 1.1
03/2013
GB
PCE Americas Inc.
711 Commerce Way
Suite 8
Jupiter
FL-33458
USA
From outside US: +1
Tel: (561) 320-9162
Fax: (561) 320-9176
info@pce-americas.com
www.pce-instruments.com/english
www.pce-instruments.com
DBS-BA-e-1311
PCE Instruments UK Ltd.
Units 12/13
Southpoint Business Park
Ensign way
Hampshire / Southampton
United Kingdom, SO31 4RF
From outside UK: +44
Tel: (0) 2380 98703 0
Fax: (0) 2380 98703 9
info@pce-instruments.com

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  • Page 1 United Kingdom, SO31 4RF From outside US: +1 From outside UK: +44 Tel: (561) 320-9162 Tel: (0) 2380 98703 0 Fax: (561) 320-9176 Fax: (0) 2380 98703 9 info@pce-americas.com info@pce-instruments.com www.pce-instruments.com/english www.pce-instruments.com Operating instructions Electronic Moisture Analyser KERN DBS Version 1.1 03/2013 DBS-BA-e-1311...

  • Page 2: Table Of Contents

    KERN DBS Version 1.1 03/2013 Operating instructions Electronic Moisture Analyser Contents Technical data ....................4 Appliance overview ..................6 Overview of display ........................8 2.1.1 Display examples ............................ 12 Keyboard overview ......................... 13 Basic Information (General) ................ 15 Proper use ..........................15 Improper Use...........................
  • Page 3 Save / access .......................... 44 Adjust ............................45 9.2.1 Drying modes ............................45 Drying mode AUTO (Standard drying/switch-off criterion “∆M“) ...... 45 9.2.1.1 Drying mode TIME (Standard drying/switch-off criterion “Time“) ..... 46 9.2.1.2 RAPID Drying mode (Rapid drying) ..........47 9.2.1.3 SLOW Drying mode (Slow drying) ..........

  • Page 4: Technical Data

    1 Technical data Data DBS 60-3 Radiator Halogen (1 x 400 W) 50°C - 200°C Temperature range 1°C increments selectable Maximum load (Max) 60 g Minimum weight (min) 0.02 g Warm-up time Weighing mode 0.001g Readability (d) Moisture analysis mode 0.01 %...
  • Page 5 • AUTO Switch-off criterion The drying is finished when the preset weight loss (∆M ) remains constant for 30 seconds. • TIME The drying is finished after the preset time, 1 minute – 4 hours (1 minute increments) or 12 hours can be selected •...

  • Page 6: Appliance Overview

    2 Appliance overview Front view: Pos. Description Viewing panel Sample dish Display Bubble level Keyboard Adjustable foot Heated cover Halogen lamp Temperature sensor DBS-BA-e-1311...
  • Page 7 Rear view: Pos. Description Anti-theft protection device connection Not documented RS232 USB, not documented Mains connection socket Fuse box DBS-BA-e-1311...

  • Page 8: Overview Of Display

    2.1 Overview of display Display Description Currently loaded drying program, see chap. 9.1 Illuminates during communication with external devices. • The stability display indicates that the weighing value is stable. • Highlights current setting in the menu. The indicator will mark the measuring result Status display during drying Drying mode AUTO...
  • Page 9 RAPID Heating-up period “pre-heating step” The pre-heating step is switched see chap. 9.2.1.3 on until “∆M pre-heating step” is constant. Temperature is lowered to the preset drying temperature. Preset drying temperature is reached. The drying is finished when the preset completion criterion is fulfilled.
  • Page 10 Previous drying time Current temperature Result display, see chap. 9.2.2 [%] moisture [%] dry mass: ATRO dry mass ATRO moisture Gram display Gram Basic displays Weight display Display % moisture Menu access via MENU button Equipment is in Ready mode, see chap. 8.4. Current menu selection Equipment is in menu „Display of results“, see chap.
  • Page 11 Status display „Equipment“ Is displayed when the heated cover is open. Flashes when the heated cover needs to be closed. Goes out when heated cover is closed Centre Is displayed when the heated cover is open. Goes out when heated cover is closed Flashes when drying process is active...

  • Page 12: Display Examples

    2.1.1 Display examples During drying: After drying: + see chap 9.1 Loaded drying program Previous time Current temperature + see chap. 9.2.2 Unit „Display of results“ + see chap. 9.2.1 Preset drying mode / + see chap. 2.1 Status display drying Current moisture content in %.

  • Page 13: Keyboard Overview

    2.2 Keyboard overview Turn on/off • Call up menu • Selecting a menu item to the left. • Scroll back • Scroll to next page • Selection of a menu item in clockwise direction • Taring • Zeroing • Activate menu item •...
  • Page 14 • Exit menu • Back to moisture analysis mode • Quit Start drying Complete drying Numerical input, see chap. 7.1.1 DBS-BA-e-1311...

  • Page 15: Basic Information (General)

    Information is available on KERN’s home page (kern-sohn.com) with regard to the monitoring of balance test substances and the test weights required for this. In KERN's accredited DKD calibration laboratory test weights and balances may be calibrated (return to the national standard) fast and at moderate cost.

  • Page 16: Danger Information

    The appliance may only be operated and maintained by trained personnel. Carefully read this operation manual before setup and commissioning, even if you are already familiar with KERN appliances. This moisture analyser is a robust precision instrument, however, it must be handled with care to ensure many years of trouble-free operation.
  • Page 17 If you spill liquid on the device, disconnect it immediately. Afterwards do not operate the moisture analyzer and have it checked by a competent KERN stockist before any further use. Never store materials on the equipment. Never place combustible materials on, under or next to the equipment, as the environment of the instrument heats up to a high temperature.
  • Page 18 Explosive, easily flammable samples and samples that go into a chemical reaction when subjected to heat, may not be analysed with the moisture analyser. Sample materials emitting toxic substances must be dried with a special extraction system in place. Create an environment that prevents the inhalation of vapours hazardous to health.
  • Page 19 Hazards during and after measuring Ensure correct installation of all components, see chap. 5.3 Careful when removing the sample. The sample itself, the sample dish and the heating unit may be very hot. Use the sample retainer at all times as it allows safe working and prevents burns.

  • Page 20: Hazard Information" Sticker

    3.5.1 “Hazard information” sticker Ventilation grilles and inspection windows may become very hot during operation Always open heated cover completely. Do not use any combustible sample materials. Disconnect the equipment from the power supply prior to changing a lamp, see chap. 13.2.2. DBS-BA-e-1311...

  • Page 21: Transport And Storage

    4 Transport and storage 4.1 Testing upon acceptance When receiving the appliance, please check packaging immediately, and the appliance itself when unpacking for possible visible damage. 4.2 Packaging / return transport  Keep all parts of the original packaging for a possibly required return.
  • Page 22 On the installation site observe the following: Remove explosive materials from the immediate vicinity. Emerging vapours, sample dish and all parts of the sample chamber are hot! Remove easily flammable materials from the immediate vicinity. Protect the device against direct draughts due to open windows and doors. Avoid extreme heat and temperature fluctuations e.g.
  • Page 23 Never store materials on the equipment. Protect the appliance against high humidity, vapours and dust, Major display deviations (incorrect weighing results) may be experienced should electromagnetic fields (e.g. due to mobile phones or radio equipment), static electricity accumulations or instable power supply occur. Change location or remove source of interference.

  • Page 24: Unpacking And Checking

    5.2 Unpacking and checking Open package, take out the appliance and accessories. Verify that there has been no damage and that all packing items are present. 5.2.1 Scope of delivery / serial accessories 1. Instrument 2. 50 disposable sample dishes 3.

  • Page 25: Placing

    5.3 Placing The moisture analyser is delivered in pieces. Check immediately after unpacking all the parts that the delivery is complete and assemble the individual components as described below. 1. Fit heat shield. 2. Install wind protection ring, ensuring correct positioning,  on . DBS-BA-e-1311...
  • Page 26 3. Install dish holder, ensuring correct positioning,  on . 4. Fit sample dish. 5. Level the equipment with foot screws [1] until the air bubble of the water balance is in the prescribed circle. DBS-BA-e-1311...
  • Page 27 Fig. 1 Fig. 2 If the air bubble is at the lefthand edge, level the equipment with the righthand foot screw, see Fig.1. If the air bubble is at the righthand edge, level the equipment with the lefthand foot screw, see Fig.2. Fig.

  • Page 28: Mains Connection

    5.4 Mains connection Power supply is provided via the supplied mains cable. Check, whether the voltage acceptance on the scales is set correctly. Do not connect the appliance to the power grid unless the information on the appliance (sticker) matches the local mains voltage. Important: Does the labelling match the local mains voltage? Do not connect if mains voltages are different!

  • Page 29: Turning On The Power

    5.4.1 Turning On the Power  Supply balance with power via the mains power cable. The display lights up and the equipment conducts a self-test.  The selftest is completed when „OFF“ appears on the display.  To switch on press the ON/OFF button. The equipment conducts a segment test. As soon as the weight display appears, the instrument will be ready to weigh.

  • Page 30: Commissioning

    5.6 Connection of peripheral devices Before connecting or disconnecting of additional devices (printer, PC) to the data interface, always disconnect the moisture analyser from the power supply. Only use accessories and peripheral devices by KERN, as they are ideally tuned to the appliance. DBS-BA-e-1311...

  • Page 31: Adjustment

    (10g – 60g) may be used for adjustment but are not optimal for technical measuring. Info about test weights can be found on the Internet at: kern-sohn.com  Press the Menu button to access the menu. ...
  • Page 32 • If the value of the adjustment weight needs to be changed, use the navigation buttons to make the required setting (see chap. 7.1.1. “Numerical input”). • The adjustment protocol output is started upon connection to an optional printer and activated GLP function (see chap. 6.3). ...

  • Page 33: Adjust Temperature

    6.2 Adjust temperature We recommend sometimes to check the temperature value of the device using the optional temperature calibrating set DBS-A01. The temperature is measured at two points (100°C and 180°C) and can be adjusted at these two points. The equipment should cool down first to room temperature after the last heating period.
  • Page 34 Call up menu:  Press the Menu button to access the menu and the first menu item “PRoGRM” will be displayed.  Use navigation buttons   to select menu item “CAL”.  Acknowledge using ENTER key, the current setting is displayed. If necessary, use navigation buttons ...
  • Page 35  The second temperature point to be tested will be displayed.  Confirm with the ENTER button, the second heat-up phase is started.  Temperature calibration for the second point takes 15 min. Compare the displayed temperature value on the thermometer with that of the moisture analyser whilst the temperature display is flashing.

  • Page 36: Iso/Glp Log

    6.3 ISO/GLP log Quality assurance systems require printouts of measuring results as well as of correct adjustment stating date and time and equipment identification. The easiest way is to have a printer connected. • Ensure that the communication parameters for moisture analyser and printer concur, see chap.

  • Page 37: Menu

    7 Menu DBS-BA-e-1311...

  • Page 38: Navigation In The Menu

    7.1 Navigation in the menu • Call up menu • Select and scroll up through the menu items • Select setting within one function • Select and scroll down through the menu items • Select setting within one function • Selecting a menu item to the left •...

  • Page 39: Numeric Entry

    7.1.1 Numeric entry Description Function Navigation key  Increase flashing digit Navigation key  Decrease flashing digit Navigation key  Digit selection to the right Navigation key  Digit selection to the left ENTER-key Confirm entry ESC-key Cancel input DBS-BA-e-1311...

  • Page 40: Moisture Analysis

    8 Moisture analysis 8.1 Start drying First set the drying parameters as described in chap. 9 during initial start-up.  Or set the drying parameters as described in chap. 9 or load from store a suitable drying program for the sample, see chap.
  • Page 41  Close heated cover and measuring will start automatically. • If measuring does not start automatically, the equipment is preset for Manual start. Press the START button to start. • Manual or Automatic start can be selected in the menu, see chap. 9.2.3 •...

  • Page 42: Abort Drying

    8.2 Abort drying  The measuring can be aborted at any time by pressing the STOP button. A long signal will sound, and “ABORT” will be displayed. Either  Press ESC key. The equipment reverts to Moisture analysis mode and the measuring result is discarded.

  • Page 43: Drying Parameters

    9 Drying parameters The equipment can be used to store complete drying programs with drying parameters individually adapted to the sample. Four drying modes (Standard drying, Step drying, Slow drying and Rapid drying) and two switch-off criteria (Time-controlled and Automatic) can be selected. Further parameters such as drying time, drying temperature and ∆M (constant weight loss per 30 seconds) should be set depending on the modes, see table below.

  • Page 44: Save / Access

    9.1 Save / access 10 memory locations, which can be simply called up and started as necessary under the saved Program number, are available for complete drying processes.  Press the Menu button to access the menu and the first menu item “PRoGRM” will be displayed. ...

  • Page 45: Adjust

    9.2 Adjust 9.2.1 Drying modes 9.2.1.1 Drying mode AUTO (Standard drying/switch-off criterion “∆M“) Drying will be carried out at the drying temperature preset by the user. The drying is finished automatically when the preset weight loss (∆M ) remains constant for 30 seconds. ETTINGS •...

  • Page 46: Drying Mode Time (Standard Drying/Switch-Off Criterion "Time")

    9.2.1.2 Drying mode TIME (Standard drying/switch-off criterion “Time“) The drying will be carried out at the drying temperature preset by the user and will end automatically when the preset time has expired. ETTINGS • Drying mode TIME • Drying temperature •...

  • Page 47: Rapid Drying Mode (Rapid Drying)

    9.2.1.3 RAPID Drying mode (Rapid drying) A preheating step is switched on for Rapid drying, i.e. the temperature will increase very quickly and will exceed the preset drying temperature until it falls below the preset reference value (weight loss/30 sec). After that the temperature will be adjusted down to the set value.
  • Page 48  Press ENTER to confirm selection. The currently present switch-off criterion will be displayed.  Use navigation buttons   to select the  required setting, TIME = time-controlled ∆M = automatic TIME setting  Press ENTER to confirm selection. The currently set drying time is displayed.

  • Page 49: Slow Drying Mode (Slow Drying)

    9.2.1.4 SLOW Drying mode (Slow drying) The Slow drying temperature is increased more slowly to the preset value than for Standard drying. The drying will end depending on the setting, when the preset time has expired or the preset weight loss (∆M) remains constant for 30 seconds. Slow drying is suitable for samples that cannot tolerate rapid heating by the heaters.
  • Page 50  Press ENTER to confirm selection. The currently present switch-off criterion will be displayed.  Use navigation buttons   to select the required setting,  TIME = time-controlled ∆M = automatic TIME setting  Press ENTER to confirm selection. The currently set drying time is displayed.

  • Page 51: Step Drying Mode (Step Drying)

    9.2.1.5 STEP Drying mode (Step drying) Step-by-step drying is suitable for substances that display special behaviour during warming. 2 or 3 steps can be selected. The individual steps are freely selectable regards duration and temperature rising step. The drying will end depending on the setting for step 2 or 3, when the preset time has expired or the preset weight loss (∆M) remains constant for 30 seconds.
  • Page 52 4. Preset drying time for step 1  Press ENTER to confirm. The currently preset drying time for step 1 will be displayed.  Use navigation buttons   to select the required setting, 1 minute – 4 hours (1 minute increments) can be selected 5.
  • Page 53 7. Set drying parameters for step 3. For drying temperature input, see step 5. For drying time input or ∆M see step 6 8. Return to weighing mode  Press ESC to return to Moisture analysis mode. The equipment is ready to measure (see chap.

  • Page 54: Result Display

    9.2.2 Result display The result display enables the selection of a display in % moisture, % dry mass, ATRO* dry mass, ATRO* moisture and residual weight in grams. Calculation: Explanation of symbols Starting weight (weight at start of measuring) Residual weight (weight value at the end of measurement) Weight loss = starting weight –...
  • Page 55  Use the navigation key   to select menu item „UNIT“.  Acknowledge using ENTER key, the current setting is displayed.  Select the desired unit using the navigation keys ( ). Display Description [M/W] [%] moisture [D/W] [%] dry mass: [M/D] ATRO* dry mass [W/D]...

  • Page 56: Start Criterion

    9.2.3 Start criterion The menu item “START” enables the selection of Manual and Automatic start of a measurement.  Press the Menu button to access the menu and the first menu item “PRoGRM” will be displayed.   Use the navigation keys   to select the menu item „START“...

  • Page 57: Miscellaneous Settings

    10 Miscellaneous settings 10.1 Enter sample designation A 4-digit sample code can be saved for a sample under menu item “CoDE”. This is output in the measuring protocol. Options: 1st and 2nd digit: „0 – 9“ or „A –Z“ or „_“ 3th and 4th digit: “0-9”...

  • Page 58: Set Date/Time For Measuring Protocol

    10.2 Set date/time for measuring protocol  Press the Menu button to access the menu and the first menu item “PRoGRM” will be displayed.   Use the navigation key   to select menu item „DATE“.  Press ENTER to confirm and the currently preset date format will be displayed.

  • Page 59: Menu Lock

    10.3 Menu Lock The menu setting operations can be locked so that the settings cannot be changed. The following menu blocks are available despite menu lock. + PRG-No / call up drying programs, see chap. 9.1 + LoCK / menu lock, current chap. + PRINT / output of measuring results, see chap.
  • Page 60 Remove the menu lock  Repeat steps 1-5. Press ENTER to confirm. The current setting will be displayed.  Press ESC if “LOCK” is displayed.  The menu lock is cancelled. The equipment reverts to Moisture analysis mode. DBS-BA-e-1311...

  • Page 61: Change Password

    10.4 Change password Standard password (factory setting): „9999“ 1. Press the Menu button to access the menu and the first menu item “PRoGRM” will be displayed.  2. Use the navigation key   to select menu item „PASS“. 3. Acknowledge using ENTER key, the password inquiry is displayed.

  • Page 62: Enter Identification Number

    10.5 Enter identification number Options: Four characters, to select from „0 – 9“ or „A –Z“ or „_“ Default setting: ID „0000“  Press the Menu button to access the menu and the first menu item “PRoGRM” will be displayed. ...

  • Page 63: Resetting The Menu

    10.6 Resetting the menu A menu reset will return all the settings to factory setting.  Press the Menu button to access the menu and the first menu item “PRoGRM” will be displayed.   Use the navigation keys   to select the menu item „RESET“...

  • Page 64: Print, Store And Call-Up Measurement Results

    • Disconnect moisture analyser from the power supply and connect to the printer interface with a suitable cable. Faultless operation requires an adequate KERN interface cable. • Communication parameters (baud rate, bits and parity) for moisture analyser and printer must concur, see chap.

  • Page 65: Pin Allocation Rs232C Interface

    11.1 Pin allocation RS232C interface DBS-BA-e-1311...

  • Page 66: Interface Parameters

    11.2 Interface parameters 1. Press the Menu button to access the menu and the first menu item “PRoGRM” will be displayed.  2. Use the navigation buttons   to select menu item „CoM.SET“. 3. Confirm with ENTER key, the currently preset port will be displayed oUT.I = RS232 oUT.2 = USB...
  • Page 67 • Handshake Selectable settings: Display HS.HW* HS.SW HS.TiM HS.oFF Hand- Hardware Software handshake Timer handshake No handshake shake handshake • Delimiter (terminator) Selectable settings: Display CR+LF Terminat CR+LF Press ESC to return to Moisture analysis mode. Factory settings are marked by *. DBS-BA-e-1311...

  • Page 68: Output Interval

    11.3 Output interval  Press the Menu button to access the menu and the first menu item “PRoGRM” will be displayed.   Use the navigation keys   to select the menu item „PRINT“ .  Acknowledge with ENTER key, “INTVAL“ will be displayed.

  • Page 69: Call Up And Print Out Measuring Results

    11.4 Call up and print out measuring results  Press the Menu button to access the menu and the first menu item “PRoGRM” will be displayed.   Use the navigation keys   to select the menu item „PRINT“ . ...

  • Page 70: Print Out Currently Preset Drying Parameters

    11.5 Print out currently preset drying parameters  Press the Menu button to access the menu and the first menu item “PRoGRM” will be displayed.   Use the navigation keys   to select the menu item „PRINT“ . ...

  • Page 71: Delete Measuring Results From Memory

    11.6 Delete measuring results from memory  Press the Menu button to access the menu and the first menu item “PRoGRM” will be displayed.   Use the navigation keys   to select menu item „MEM.CLR“.  Confirm with ENTER key, the query CLR.oK? will be displayed.

  • Page 72: Printout Examples

    11.7 Printout examples 1. Moisture analysis measuring protocol Company KERN & Sohn GmbH TYPE DBS60-3 Model SN WBIIAH0000I Serial no. ID 0000 Identification No. (see chap. 10.5) CODE 0006 Sample designation (see chap. 10.1) DATE 10-05-11 Date (see chapter. 10.2).
  • Page 73 2. Adjustment log „Balance“ CAL-BALANCE Adjust balance (see chap. 6.1) Company KERN & Sohn GmbH TYPE DBS60-3 Model SN WBIIAH0000I Serial no. ID 0000 Identification No. (see chap. 10.5) DATE 10-05-11 Date (see chap. 10.2). TIME 10:17 Time REF= 50.000g Used adjustment weight BFR= 50.002g...
  • Page 74 3. Adjustment log „Temperature“ CAL-TEMPERATURE Adjust temperature (see chap. 6.2) Company KERN & Sohn GmbH TYPE DBS60-3 Model SN WBIIAH0000I Serial no. ID 0000 Identification No. (see chap. 10.5) DATE 10-05-11 Date (see chap. 10.2). TIME 10:17 Time REF= 100C...

  • Page 75: General Information Concerning Moisture Analysis

    The radiation applied in the KERN DBS penetrates mainly the sample in order to be transformed inside it into heat energy that is, warming from the inside to the outside. A minor amount of radiation is reflected by the sample, a reflection that is less in dark samples than in light-coloured ones.

  • Page 76: Preparing A Sample

    12.4 Preparing a sample Prepare one sample at a time for measuring. This prevents the sample from exchanging moisture with its surroundings. If several samples have to be taken at the same time, they should be packed in airtight boxes so that they do not undergo changes during storage.

  • Page 77: Sample Material

    12.5 Sample material Easy to determine are usually samples with the following characteristics: Grainy to powdery, pourable solids Thermally stable materials, emitting the moisture to be determined easily without other substances evaporating at the same time Liquids that vaporize to leave a dry substance without developing a film Difficult to determine may be samples that are: Glutinous or sticky Become incrusted easily or tend to form a film...

  • Page 78: Drying Temperature

    12.7 Drying temperature Bear in mind the following factors when setting the drying temperature: Surface of the sample: Compared with powdery or grainy samples, liquid and spreadable samples have a smaller surface for the transmission of heat energy. The use of a glass fibre filter improves the heat application. Colour of sample: Light-coloured samples reflect more heat radiation than dark ones and therefore require a higher drying temperature.
  • Page 79 Table of applications: Drying Solid Weight Drying Moisture period body Material Sample temperature (approx.) ( °C) (approx.) (min) (approx.) ABS (Novodur P2H-AT) 0.11 Accumulator lead 0.19 Acryl granulate 10-15 0.18 Activated carbon 13.33 Activated carbon 6.12 Sliced pineapple 14.4 6.71 Sliced apple (dry) 10-15 76.5...
  • Page 80 Drying Solid Weight Drying Moisture period body Material Sample temperature (approx.) ( °C) (approx.) (min) (approx.) Setting lotion 0.01 98.76 Setting lotion (extra strong) 97.85 Hair styling gel 37.0 94.71 Oat flakes 9.35 Hazelnut cores Hazelnut cores (peeled) 3.74 Hydranal sodium tatrate – 2 15.67 –...
  • Page 81 Drying Solid Weight Drying Moisture period body Material Sample temperature (approx.) ( °C) (approx.) (min) (approx.) Paper PA 6 (Ultramide B3WG5) 0.05 PA 6.6 (Ultramide B3WG5) 0.15 PBTP (Crastin SK645FR) 0.05 PC (Macrolon 2805) 10-12 0.08 PC/ABS (Babyblend T65MN) 9-11 0.12 Pepper, black, powder 7.97...
  • Page 82 Walnut Washing powder 7.32 Wheat spring water Sausage casing 78.56 Toothpaste 34.28 Pulp 7.32 Cement 8-12 Sugar 11.9 Sugar beets 13.4 30.94 For real-life examples please refer to our application manual by going to our KERN Homepage (kern-sohn.com). DBS-BA-e-1311...

  • Page 83: Service, Maintenance, Disposal

    13 Service, maintenance, disposal 13.1 Cleaning + Before any maintenance, cleaning and repair work disconnect the appliance from the operating voltage. + Only carry out cleaning tasks when the equipment has cooled down. Please do not use aggressive cleaning agents (solvents or 1.

  • Page 84: Service, Maintenance

    13.2 Service, maintenance  The appliance may only be opened by trained service technicians who are authorized by KERN.  Ensure that the balance is regularly calibrated, see chap. Testing instruments control. 13.2.1 Remove protective glass guard + Avoid contact with halogen lamp and sensor! + Handle protective glass guard with care.
  • Page 85 3. Remove protective glass guard and clean with a commercially available glass cleaner. Glass plate [1] can be removed if necessary by undoing the screws [2]. 4. Refit the cleaned protective glass guard in reverser order. DBS-BA-e-1311...

  • Page 86: Lamp Change

    13.2.2 Lamp change + Disconnect equipment from power supply. + Only change the lamp when the equipment has cooled down. 1. Remove protective glass guard, see chap. 13.2.1 1. Light 2. terminal 3. Plug connector 2. Remove plug connector [3]. Remove cable from terminals [2] with care.

  • Page 87: Replacing Fuses

    13.2.3 Replacing fuses + Disconnect equipment from power supply. + Only use 6.3 A microfuses 1. Remove fuse box (see chap. 2, Item 15) from the back of the equipment and change the fuse in accordance with the illustration. 13.3 Disposal Disposal of packaging and appliance must be carried out by operator according to valid national or regional law of the location where the appliance is used.

  • Page 88: Instant Help

    14 Instant help Fault Possible cause • The display unit is not switched on. Display is not lit up. • The mains supply connection has been interrupted (mains cable not plugged in/faulty). • Power supply interrupted. • Fuse has blown The display does not change when a sample is being loaded •...

  • Page 89: Error Messages

    14.1 Error messages Error message Explication Remedy ERR.001 Switch equipment off and on ERR.002 Hardware error again. If the error message remains inform manufacturer. Switch equipment off and on ERR.005 Memory error again. If the error message remains inform manufacturer. Heated cover is open for more ERR.100 than 1 minute during...
  • Page 90 High zero point shift during ERR.C01 adjustment ERR.C02 Press ESC to abort and repeat ERR.C04 There are objects in the sample adjustment procedure. dish Adjustment error Missing sample dish ERR.oL Overload Check sample dish ERR.-oL CoM.ERR Wrong remote control order. Correct remote control order.

  • Page 91: Declaration Of Conformity

    EN 61010-2-010: 2003 Datum 27.03.2013 Signatur Date Signature 72336 Balingen Albert Sauter Ort der Ausstellung KERN & Sohn GmbH Place of issue Geschäftsführer Managing director KERN & Sohn GmbH, Ziegelei 1, D-72336 Balingen, Tel. +49-[0]7433/9933-0 Fax +49-[0]7433/9933-149, E-Mail: info@kern-sohn.com DBS-BA-e-1311...

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