KERN EW - 600 - 2M Service Manual
  1. Manuals
  2. Brands
  3. KERN Manuals
  4. Scales
  5. EW - 600 - 2M
  6. Service manual

KERN EW - 600 - 2M Service Manual

Ew series, eg series electronic precision balances
Hide thumbs
Table of Contents

Advertisement

Quick Links

Servicemanual for electronic precision
balances series
KERN EW/EG
Version 1.1 07/98
EW/EG-SU-e-9811

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the EW - 600 - 2M and is the answer not in the manual?

Questions and answers

Related Manuals for KERN EW - 600 - 2M

Summary of Contents for KERN EW - 600 - 2M

  • Page 1 Servicemanual for electronic precision balances series KERN EW/EG Version 1.1 07/98 EW/EG-SU-e-9811...

  • Page 2: Table Of Contents

    CONTENTS SECTION 1. TOTAL VIEW OF EW/WG ...................3 SECTION 2. ELECTRONIC CONSTRUCTION...................4 Block diagramm KERN EW type ....................4 Block diagramm KERN EG type....................5 Whole wiring KERN EW type....................6 Whole wiring KERN EG type ....................7 SECTION 3. TROUBLESHOUTING PROCEDURE................8 Troubleshooting procedure.....................8 Troubleshooting table......................9...

  • Page 3: Section 1. Total View Of Ew/Wg

    1 SECTION 1. TOTAL VIEW OF EW/WG Total view of round pan type - 150g --> 600g - Total view of square pan type - 1500g --> 6kg - EW/EG-KB-e-9811...

  • Page 4: Section 2. Electronic Construction

    2 SECTION 2. ELECTRONIC CONSTRUCTION 2.1 Block diagramm KERN EW type EW/EG-SU-e-9811...

  • Page 5: Block Diagramm Kern Eg Type

    2.2 Block diagramm KERN EG type EW/EG-KB-e-9811...

  • Page 6: Whole Wiring Kern Ew Type

    2.3 Whole wiring KERN EW type EW/EG-SU-e-9811...

  • Page 7: Whole Wiring Kern Eg Type

    2.4 Whole wiring KERN EG type EW/EG-KB-e-9811...

  • Page 8: Section 3. Troubleshouting Procedure

    3 SECTION 3. TROUBLESHOUTING PROCEDURE 3.1 Troubleshooting procedure EW/EG-SU-e-9811...

  • Page 9: Troubleshooting Table

    3.2 Troubleshooting table Symptoms Causes & Remedy No display lights on 1. EW/EG board is defective. 2. AC adapter is defective. 3. Wrong connection of connection cords inside. 4. Built-in battery (option) is discharged. u-Err or o-Err 1. Wrong weighing pan is applied. appears after self 2.

  • Page 10: Primary Checks

    3.3 Primary checks 1. Is any wind around the site? Is any oscillation? Is the working table stable? 2. Is anything under the pan base or the weighing pan? 3. Is the weighing pan a right one? 4. Is AC adapter connected both with the scale and with the outlet properly? 5.

  • Page 11: How To Remove The Case

    3.4 How to remove the case 1. Unplug the AC adapter. Remove the pan and pan base. 2. Remove (2) case fixing screws with a philip driver. 3. Locate two hooks beneath the scale near to front. Pull those two hooks toward you to lift the case up, then shift the case to rear to release it from rear hooks.

  • Page 12: On/Off Of Lock Switch

    4. Remove the upper case and place it to the left. Remove protector beforehand, if any. 3.5 ON/OFF of lock switch Set the lock switch to "ON" before stamping or sealing so that the user is unable to change parameters or to calibrate the scale. 3.6 How to cover the case 1.

  • Page 13: Section 4. Adjustments And Settings

    4 SECTION 4. ADJUSTMENTS AND SETTINGS 4.1 Span calibration (Cal) - EW type 1. It is recommended to use a calibration weight of better accuracy than the scale. 2. The calibration is available with ½ of F.S. Nevertheless, it is recommended to use weight closer to F.S.

  • Page 14: Corner Error Adjustment

    4.2 Corner error adjustment Remove the upper case referring to page 9. Place the pan base, then place the weighing pan on the mechanism. Adjust the level. Remove two fixing screws on EW/EG board and place the screws on the plastic part of the lower case.

  • Page 15: How To Adjust Overload Stopper

    4.3 How to adjust overload stopper 1. Apply the pan base on the mechanism. Then slide out stoppers by loosening two fixing screws with a hexagon wrench of 3 x 3. 2. Press the ON/OFF key to on while pressing F key and T key together Release both keys when DJr____ appears.
  • Page 16 Table for stopper positioning Models Weight applied Weight to be Maximum weight for setting *1 increased to be applied *2 EW - 300 - 2M 600g 100g 700g EG - 300 - 3M EW - 600 - 2M 1000g 100g...

  • Page 17: Calibration Of Built - In Weight (Ref Cal) - Eg Type

    4.4 Calibration of Built - In Weight (Ref Cal) - EG type * Following does not describe the procedure of ordinary span calibration. * This is the procedure of Calibration of the built- in weight with EG scales. * It is necessary to adjust the linearity of the scale beforehand. Refer to page 19.
  • Page 18 Cautions are on next page ---------> -------------> continued from page 21 Cautions: 1. r E F. Cal must be carried out in following cases: (1) When built-in weight is added or replaced. (2) When linearity adjustments is done. (3) When DJD board is replaced. 2.

  • Page 19: Section 5. Parts Replacement

    the accuracy of the scale. Use weights of higher accuracy than the scale. 3. Adjust the level beforehand. The ref-calibration must be done in a good environment, no wind, no oscillation and no temperature changes. 4. I - E r r : The reference weight is less than ½ of F.S. 2 - E r r : The data error exceeds 0.4%.
  • Page 20 1. How to remove weighing mechanism (1) Remove the upper case referring to page 9. (2) Remove three mechanism fixing nuts by a nut driver of opp. 7mm. (3) Remove wires to the tuning-fork sensor, by welding solders at DJD circuit board. (4) Remove the mechanism unit by holding at the lower case EW/EG-SU-e-9811...
  • Page 21 2. How to install weighing mechanism (1) Place the mechanism on the lower case. Fix it with three fixing nuts. (2) Solder wires of the tuning-fork sensor to the DJD circuit board. 3. Cover the scale referring to page 10 EW/EG-KB-e-9811...
  • Page 22 (1) Remove DJD board (1) Remove the upper case referring to page 9. (2) Unplug connectors at CN6 and CN4 on DJD board. With battery option, unplug CN3 with output option, unplug CN1 and CN2 in addition. (3) Unsolder T1, T2 and T3. (4) Remove DJD board by removing two DJD fixing screw.

  • Page 23: Parts List For Ew Type

    6 Parts list for EW type EW/EG-KB-e-9811...

  • Page 24: Ew/Eg-Su-E

    Parts list for EW type Part No. Part Name Material 140 ∅ round pan Stainless steel 140 ∅ round pan base assembly Aluminum 140 ∅ protector Stainless steel Square pan Stainless steel Square pan base assembly Iron EW panel Polyester film ----------------------------------------------- ------------------------------------------- Top cover...
  • Page 25 Parts list for EG type EW/EG-KB-e-9811...
  • Page 26 Parts list for EG type Part No. Part Name Material 110 ∅ round pan Stainless steel 110 ∅ round pan base assembly Aluminum 110 ∅ protector Stainless steel 140 ∅ round pan Stainless steel 140 ∅ round pan base assembly Aluminum 140 ∅...

Table of Contents