OHAUS Explorer Balances Service Manual
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OHAUS Explorer Balances Service Manual

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  • Page 1 ® Explorer Balances Service Manual...

  • Page 3: Table Of Contents

    3.6 REPLACING THE PRINTED CIRCUIT BOARD ASSEMBLIES (PCBA) 3.2.5 Terminal 3.2.6 Base 3.7 Replacing the Function Label Replacing the Touch Panel Replacing the Feet 4 TESTING TEST MASSES REQUIRED OPERATIONAL TEST LOAD CELL TEST USING RAMP PERFORMANCE TESTS ® Ohaus Corporation www.ohaus.com Explorer Service Manual...
  • Page 4 TOUCH SCREEN CALIBRATION APPENDIX B - DIAGNOSTIC / SERVICE MENU User Accessible Diagnostics Service Sub-Menu APPENDIX C – SERVICE TOOL Balance Commands RS232 (DB9) Pin Connections USB Interface APPENDIX D – FIRMWARE UPGRADE VIA USB ® Explorer Service Manual Ohaus Corporation www.ohaus.com...
  • Page 5 Terminal Spare Parts ....................48 Base Spare Parts (Non-Draftshield Models) ............50 Base Spare Parts (Draftshield Models) ..............52 Draftshield Spare Parts .................... 54 Service Calibration Mass Values ................60 Interface Command List ................... 74 ® Ohaus Corporation www.ohaus.com Explorer Service Manual...

  • Page 7: Getting Started

    INTRODUCTION This service manual contains the information needed to perform routine maintenance and service ® on the Ohaus Explorer Series balances. Familiarity with the balance’s  Instruction Manual is assumed. The contents of this manual are contained in five chapters: Chapter 1 - Getting Started – Contains information on service facilities, tools, specifications, and the mechanical and electronic functions of the balance.

  • Page 8: Specifications

    Masses as shown in Table 4-1. SPECIFICATIONS ® Specifications for the Ohaus Explorer Balances are listed in Table 1-1. When a balance has been serviced, it must meet the specifications listed in the table. Before servicing the balance, determine what specifications are not met.
  • Page 9 0.01g / Zero Drift (1e / 1°C) 0.1g / 1°C 0.1g / 1°C 0.1g / 1°C 1°C 1°C 1°C 1°C Span Sensitivity 0.0015g 0.0015g 0.015g 0.01g 0.15g 0.1g 0.1g (MPE /°C @ max) ® Explorer Series Service Manual Ohaus Corporation www.ohaus.com...
  • Page 10 Capacity (max) (g) 12000 g 24000 g 35000 g Readability d (g) 0.1 g Ver. Interval e (g) LFT Class Repeatability (10 times each load) (load / MPE) Linearity (g) +0.2 g reference only ® Ohaus Corporation www.ohaus.com Explorer Series Service Manual...
  • Page 11 Class I Class II ± 0.5 e 0≤m≤50,000 0≤m≤5000 ± 1 e 50,000<m≤200,000 5000<m≤20,000 ± 1.5 e 200,000<m 20,000<m≤1000,000 Maximum errors for balances in usage are twice the acceptable errors for initial verification. ® Explorer Series Service Manual Ohaus Corporation www.ohaus.com...

  • Page 12: Unit Capacity And Readability

    72.5594 baht 0.00001 0.00001 0.00001 0.0001 0.0001 0.0001 0.0001 custom(3) 10.28824 18.86177 27.43530 18.8619 36.0088 53.1559 94.3089 tola 0.00001 0.00001 0.00001 0.0001 0.0001 0.0001 0.0001 120000.0 220000.0 320000.0 220000 420000 620000 1100000 ® Ohaus Corporation www.ohaus.com Explorer Series Service Manual...
  • Page 13 0.001 0.001 0.001 custom(3) 188.618 360.088 531.559 874.500 531.56 874.50 1028.82 2057.65 3000.74 tola 0.001 0.001 0.001 0.001 0.01 0.01 0.01 0.01 0.01 22000000 4200000 6200000 10200000 6200000 10200000 12000000 24000000 35000000 ® Explorer Series Service Manual Ohaus Corporation www.ohaus.com...

  • Page 14: Balance Operation

    (>0<) indicators Capacity or Status Guides: Vary by application Result Fields: Information varies by application Application Buttons: Functions vary by application Touch icons to perform specific functions or access other functions ® Ohaus Corporation www.ohaus.com Explorer Series Service Manual...

  • Page 15: Main Menu And Principal Functions

    Application Home screen. The Main menu appears, with buttons for Main, Back Done Continue touching the appropriate list item to navigate to the Menu items or touch a button to change location. ® Explorer Series Service Manual Ohaus Corporation www.ohaus.com...

  • Page 16: Changing Settings

    If the sensor cannot be activated (sensor is disabled during certain instances, like when the Menu is displayed) the sensor shows a red light. ® Ohaus Corporation www.ohaus.com Explorer Series Service Manual...
  • Page 17 To use the built-in stopwatch application, touch Stopwatch. A countdown timer with interval (lap) timer is available. Calculator To use the built-in calculator application, touch Calculator. The calculator has four functions, addition, subtraction, multiplication and division. ® Explorer Series Service Manual Ohaus Corporation www.ohaus.com...

  • Page 18: Legal For Trade (Lft)

    Note:    “M”  and  “N”  models- When  the  Menu  Lock  switch  is  set  to  “on”  certain  menu  items  will  be   forced to the required setting and the required menus will be locked. ® Ohaus Corporation www.ohaus.com Explorer Series Service Manual...

  • Page 19: Menu Structure

    Service Menu The Service Menu is intended for use by service personnel. A password is required to access this menu; “Explorer” (SW 1.10) or “OHAUS” (SW 1.03). The Service menu includes three sub-Menus; Ramp, Span Calibration and Internal Calibration. See Appendix B for additional information.

  • Page 20: Securing The Menu And Key Lock Menu Settings

    The display touch areas that are active will change with the screen layout. Button areas will always ® be active but some areas will require familiarity with the Explorer man-machine interface. Application with Single line: 10w x 14h mm 95w x 19h mm 16w x 15h mm ® Ohaus Corporation www.ohaus.com Explorer Series Service Manual...
  • Page 21 60w x 5h mm Application with Two lines and Message: 10w x 14h mm 95w x 14h mm 60w x 5h mm Note: If text area is grayed out, button cannot be selected. ® Explorer Series Service Manual Ohaus Corporation www.ohaus.com...

  • Page 22: Capacity And Readability

    See Appendix C for the software upgrade procedure. Check the Service Bulletins on the Ohaus DMX site for information on software upgrades. DIAGNOSTIC GUIDE Diagnostic Guide designed to help locate the problem area quickly and easily. The probable causes are listed with the most common cause first.
  • Page 23 NOTE: If more than one symptom is observed, approach one area at a time, and remember that the symptoms may be interrelated. If a problem arises that is not covered in this manual, contact Ohaus Corporation for further information. TABLE 2-1 DIAGNOSTIC GUIDE...
  • Page 24 Re-install pan Over initial zero Pan has load during power on Remove weight from pan and re-zero. range Under initial zero Pan was removed prior to power on Install pan and re-zero. range ® Ohaus Corporation www.ohaus.com Explorer Series Service Manual...
  • Page 25 Base Main PCBA, see 3.4.2 and date. Note: There is 40-second timeout control for print under stable requirement. If the unstable condition  continues  over  40  seconds,  balance  will  send  “ES”  to  the  printer. ® Explorer Series Service Manual Ohaus Corporation www.ohaus.com...

  • Page 26: Maintenance / Repair Procedures

    MAINTENANCE / REPAIR PROCEDURES PREVENTIVE MAINTENANCE Ohaus balances are precision instruments and should be carefully handled, stored in a clean, dry, dust-free area, and cleaned periodically. Follow these precautionary steps: When a balance has had chemicals or liquids spilled on it, all exterior surfaces should be cleaned as soon as possible with warm water on a damp cloth.
  • Page 27 CHAPTER 3 - MAINTENANCE PROCEDURES 3. Draftshield models – remove the Top and Side Doors and the Front Panel 4. Remove the Platform, Sub-Platform, Support Caps and Wind Ring as required. EX12001, EX24001, EX35001 ® Explorer Series Service Manual Ohaus Corporation www.ohaus.com...

  • Page 28: Opening The Terminal Module

    Press Foot Side View Flex center of bracket down Slide hinge pivot out of hole 2. Remove the 4 screws securing the Terminal Top and Bottom Housings. Screws that secure the housings ® Ohaus Corporation www.ohaus.com Explorer Series Service Manual...
  • Page 29 90° so that it is perpendicular to the cable. Connector locked, Connector released, Connector release position lock parallel to the cable lock 90° to the cable shown without cable ® Explorer Series Service Manual Ohaus Corporation www.ohaus.com...

  • Page 30: Opening The Base Module With A Draftshield

    1. Prepare the balance as instructed above. 2. Remove the EMC Screw and Plate from the Base 3. Remove the Back Plate Screws that secure the Back Plate 4. Disconnect the Light Cable. ® Ohaus Corporation www.ohaus.com Explorer Series Service Manual...
  • Page 31 7. Turn the base over and remove the two remaining screws that hold the Top Housing to the Base. 8. Turn the Module over. Remove the Top Housing being careful to route the Light Cable and Motor Cables (if equipped) through the holes in the Upper Housing. ® Explorer Series Service Manual Ohaus Corporation www.ohaus.com...

  • Page 32: Opening The Base Module (Top Loader)

    2. Turn the base on its side and remove the 4 screws that hold the Top Housing to the Base. Do not turn the Base completely over as the weight of the Base will rest on the Load-cell possibly causing damage. ® Ohaus Corporation www.ohaus.com Explorer Series Service Manual...
  • Page 33 3. Turn the base back on its feet and remove the Top Housing. Lay the Top Housing alongside so that the Bubble Level Light wiring can be disconnected. 4. Disconnect the Bubble Level Light wiring by pulling up on the connector. ® Explorer Series Service Manual Ohaus Corporation www.ohaus.com...

  • Page 34: Opening The Base Module (Ex12001, Ex24001, Ex35001)

    1. Prepare the balance as instructed above. 2. Remove the 2 screws that hold the Spider to the Top Housing and lift off the Spider. 3. Remove the 7 screws that hold the Top Housing to the Base. ® Ohaus Corporation www.ohaus.com Explorer Series Service Manual...

  • Page 35: Remove The Top Housing

    CHAPTER 3 - MAINTENANCE PROCEDURES 4. Remove the Top Housing ® Explorer Series Service Manual Ohaus Corporation www.ohaus.com...

  • Page 36: Replacing The Load Cell (Not 12001, 24001 And 35001)

    2. Remove the Load-cell Shield by lifting vertically. Note the Top Loader models do not have a Load-cell Shield. 3. Disconnect the two Load Cell connections at the Main PCB. ® Ohaus Corporation www.ohaus.com Explorer Series Service Manual...
  • Page 37 环 ) 项 :N/A DOCUMENT NUMBER 编号 : Explorer PRODUCT FAMILY 产 : Nipper Explorer PRODUCT MODEL 产号 : A ssem bl y PROCESS OPERATION TITLE 称 1 of SHEET 页码 : ® Explorer Series Service Manual Ohaus Corporation www.ohaus.com...
  • Page 38 历记录 1st Version Ying Qi Notice 结项 : EHS( 环 ) 项 :N/A DOCUMENT NUMBER 编号 : PRODUCT FAMILY 产 : PRODUCT MODEL 产号 : PROCESS OPERATION TITLE 称 SHEET 页码 : ® Ohaus Corporation www.ohaus.com Explorer Series Service Manual...
  • Page 39 7.Put the cable into the slot using nipper and make sure the cable not cover the screw hole 8.Pull the cable out of bottom and bend at about 6cm. 图 Nipper loadcell cable screw hole E 环 项 D 编 P 产 Bending line P 产 S 页 ® Explorer Series Service Manual Ohaus Corporation www.ohaus.com...
  • Page 40 A ssem PROCESS OPERATION TITLE 称 1 of SHEET 页码 : See Appendix C for instructions on how to use the software Service Tool to configure the new load- cell to the balance. ® Ohaus Corporation www.ohaus.com Explorer Series Service Manual...

  • Page 41: Replacing The Load Cell (12001, 24001 And 35001)

    3. Turn the base back on its feet making sure that the load cell do not fall out. Remove all cables connecting the load cell to the PCB and lift the load cell out from the housing ® Explorer Series Service Manual Ohaus Corporation www.ohaus.com...

  • Page 42: Removing Load Cell Protection Screws

    Follow by removing the screw on the right side. 3. Remove both screws with shims completely from the load cell. Please store the screws and shims in a safe place. ® Ohaus Corporation www.ohaus.com Explorer Series Service Manual...

  • Page 43: Replacing The Printed Circuit Board Assemblies (Pcba)

    PCB, remove the 4 mounting screws and slide the PCBA forward and up to remove. Speaker connector Mounting Screws 4. To remove the speaker remove the 2 screws and lift out. Speaker Cushion Speaker screws and retainers ® Explorer Series Service Manual Ohaus Corporation www.ohaus.com...
  • Page 44 Remove the 4 mounting screws and lift out the Terminal Main PCBA. 6. Remove the LC Display by simply lifting it out. 7. See Section 3.6 for instructions on changing the Touch Panel. ® Ohaus Corporation www.ohaus.com Explorer Series Service Manual...

  • Page 45: Base

    Loosen the 2 retaining screws approximately 2 turns • Rotate the retaining washers so that it no longer engages the PCB, slide out the PCBA • Disconnect the cable at the Connect PCBA. ® Explorer Series Service Manual Ohaus Corporation www.ohaus.com...
  • Page 46 Rotate the retaining washers so that it no longer engages the PCB, slide out the PCB • Disconnect the Power Jack and the Ribbon Cable to the Connector PCBA cables Real Time Clock battery ® Ohaus Corporation www.ohaus.com Explorer Series Service Manual...
  • Page 47 Rotate the retaining washers so that it no longer engages the PCB, slide out the PCB Re-install: Reverse the procedures to re-install the PCBAs. See Appendix C for instructions on how to use the software Service Tool to configure the new PCBA to the balance. ® Explorer Series Service Manual Ohaus Corporation www.ohaus.com...

  • Page 48: Replacing The Function Label

    Peal off the remaining liner and press the surface starting at the attached area and working outward to avoid bubbles under the label. ® Ohaus Corporation www.ohaus.com Explorer Series Service Manual...

  • Page 49: Replacing The Touch Panel

    The bearing assembly is made of three parts, two disks with a bearing ring in the center. The curved surface of the dicks should face the ball bearings. Assemble the foot components in the order shown in the sketch below. Rear Foot Load bearing plate Bearing Assembly Front Foot ® Explorer Series Service Manual Ohaus Corporation www.ohaus.com...
  • Page 50 CHAPTER 3 - MAINTENANCE / REPAIR PROCEDURES 3.10 Replacing the Motor and Motor PCBA The feet assemblies incorporate a bearing assembly that allows for easy adjustment of the feet. ® Ohaus Corporation www.ohaus.com Explorer Series Service Manual...

  • Page 51: Testing

    The Analytical models especially need a solid platform, such as a stone table. TEST MASSES REQUIRED ® The masses required to test the Ohaus Explorer balances must meet the requirements of the ASTM or OIML Tolerances listed in the table. Poor quality calibration masses be the can cause of frustrating diagnostics.

  • Page 52: Operational Test

    If it still does not meet specifications, perform a service calibration, and try again. (See Appendix B for Service Calibration) If the balance does not pass this test, the Load Cell may need to be replaced. ® Ohaus Corporation www.ohaus.com Explorer Series Service Manual...

  • Page 53: Repeatability Test (Non-Approved Models)

    3. Remove the mass from the platform. 4. Repeat this test starting at Step 1 until you record a total of ten readings. Fill in the worksheet with the ten (10) readings. ® Explorer Series Service Manual Ohaus Corporation www.ohaus.com...

  • Page 54: Repeatability Worksheet

    Note: If the balance does not meet specifications, check environmental conditions, ensure that the balance is level, and try again. If it still does not meet specifications, perform a service calibration, and try again. (See Appendix B for Service Calibration) ® Ohaus Corporation www.ohaus.com Explorer Series Service Manual...

  • Page 55: Linearity Test

    2. Place Load 1 on the Balance and press TARE. 3. Place the test mass on the Balance, record the weight and remove. 4. Place Load 2 on the Balance and press TARE. ® Explorer Series Service Manual Ohaus Corporation www.ohaus.com...

  • Page 56: Off Center Load Mass Values

    EX6202 2000g EX10202, M, N 3500g EX6201 2000g EX10201 3500g EX12001 4000g EX24001 8000g EX35001 12000g The test positions (A-D) must be centrally located in each segment. Round Pan Rectangular Pan ® Ohaus Corporation www.ohaus.com Explorer Series Service Manual...
  • Page 57 If there is no improvement the load-cell must be replaced. Note: In high resolution balances (Class I) it may be necessary to zero or tare between each location. ® Explorer Series Service Manual Ohaus Corporation www.ohaus.com...
  • Page 58 NOTE: In all cases where a part is replaced, the balance must be thoroughly checked after the replacement is made. The balance MUST meet the parameters of all applicable specifications in this manual. If further technical information is needed, please contact your local Ohaus office, or www.ohaus.com. ® Ohaus Corporation www.ohaus.com...

  • Page 59: Terminal Spare Parts

    CHAPTER 5 - PARTS LISTS & DIAGRAMS TERMINAL SPARE PARTS ® Explorer Series Service Manual Ohaus Corporation www.ohaus.com...
  • Page 60 PCB, Main, Terminal EX 83033620 PCB Interconnect, Terminal EX 83033621 Bottom Housing, Terminal EX 83033628 Bracket Assembly, Terminal EX 83033625 Cable Kit, Terminal EX 83033630 Hardware Kit, Terminal EX 83033631 Terminal, Complete EX 83033632 ® Ohaus Corporation www.ohaus.com Explorer Series Service Manual...

  • Page 61: Base Spare Parts (Non-Draftshield Models)

    CHAPTER 5 - PARTS LISTS & DIAGRAMS BASE SPARE PARTS (Non-Draftshield models) ® Explorer Series Service Manual Ohaus Corporation www.ohaus.com...
  • Page 62 IR Sensor PCBA Base, Non-DS Level Bubble Main PCBA Connect PCBA Load-cell Foot Kit Cable Kit (not all shown) Hardware Kit (not all shown) Not shown Box, Non-DS Not shown Packaging Complete, Non-DS ® Ohaus Corporation www.ohaus.com Explorer Series Service Manual...

  • Page 63: Base Spare Parts (Draftshield Models)

    CHAPTER 5 - PARTS LISTS & DIAGRAMS BASE SPARE PARTS (Draftshield models) ® Explorer Series Service Manual Ohaus Corporation www.ohaus.com...
  • Page 64 Latch, Front Panel Level Bubble Main PCBA Connect PCBA Load-cell Cover Load-cell Foot Kit Cable Kit (not all shown) Hardware Kit (not all shown) Not shown Box, DS Not shown Packaging Complete, DS ® Ohaus Corporation www.ohaus.com Explorer Series Service Manual...

  • Page 65: Base Spare Parts (Ex12001, Ex24001, Ex35001)

    CHAPTER 5 - PARTS LISTS & DIAGRAMS BASE SPARE PARTS (EX12001, EX24001, EX35001) ® Explorer Series Service Manual Ohaus Corporation www.ohaus.com...
  • Page 66 30041465 SP Power-Cord AU EX HiCap 30041466 SP Power-Cord JP EX HiCap 30041469 SP Power-Cord KR EX HiCap 30041419 SP Power adapter EX HiCap 30076295 SP Packaging Assembly EX HiCap 30041271 Shipping Box EX HiCap ® Ohaus Corporation www.ohaus.com Explorer Series Service Manual...

  • Page 67: Draftshield Spare Parts

    CHAPTER 5 - PARTS LISTS & DIAGRAMS DRAFTSHIELD SPARE PARTS ® Explorer Series Service Manual Ohaus Corporation www.ohaus.com...
  • Page 68 Light Assy DS EX 83033687 Hardware DS EX 83033688 Glass Assy – Left EX 83033678 Belt DS EX 30066394 Bracket Assy EX 83033625 Motor Step DS EX 30069152 Glass Assy – Front EX 83033677 ® Ohaus Corporation www.ohaus.com Explorer Series Service Manual...

  • Page 69: Appendix A - User Calibrations

    To resolve internal problems, follow procedures in Chapters 2 and 3. Be careful not to touch the balance or the table while calibration is in progress, as it will cause the process to fail. ® Explorer Series Service Manual Ohaus Corporation www.ohaus.com...

  • Page 70: A.2 Linearity Calibration

    With the balance turned ON, touch Menu then User Settings then Display Settings and then Touch Calibrate. Touch Calibrate: “Touch  the  screen  at  the  center  of  the  ring.  O Press  here.”   (First top-left, then bottom-right) ® Ohaus Corporation www.ohaus.com Explorer Series Service Manual...

  • Page 71: Appendix B - Diagnostic / Service Menu

    Sensor PCBA, pins 2 and 4. Service Menu The Service Menu is intended for use by service personnel only. A password is required to access this menu, see the next section. Explorer Series Service Manual Ohaus Corporation www.ohaus.com...

  • Page 72: B.2 Service Sub-Menu

    The Service sub-menu, allows authorized service personnel to monitor Ramp or perform a variety of service weight calibrations. A password is required to access this menu. The current password is “Explorer” (SW: 1.10) and “OHAUS” (SW: 1.03). Software in the initial production units may not have all of the service items shown.
  • Page 73 Service Internal Calibration. The sequence of loading the test weights on the platform is very important to insure a correct linearity calibration. Refer to the diagram below for the correct weight sequence. Explorer Series Service Manual Ohaus Corporation www.ohaus.com...
  • Page 74 SERVICE INTERNAL CALIBRATION The internal calibration weight is used to calibrate the balance. If a pan, pan support or load-cell is changed a Service Span Calibration or Service Internal Calibration should be done. ® Ohaus Corporation www.ohaus.com Explorer Series Service Manual...

  • Page 75: Service Calibration Mass Values

    Balance Type, Max, d, Balance ID, IDNR, Loadcell Type, Loadcell Serial Number, Terminal Serial Number, Terminal SW Version, Base SW Version. Exit Service Mode Exits the Service Mode and returns to Normal Mode. Explorer Series Service Manual Ohaus Corporation www.ohaus.com...
  • Page 76 PCB replacement. The tool can also be used to communicate with the balance using commands that are listed at the end of the appendix. The latest software service tool and support files are available on the Ohaus DMX site. Please read the Service Tool Instruction Manual (Part Number 30032352) which is also available on Ohaus DMX site.

  • Page 77: C-1 Interface Command List

    Print Serial Number. Print base software version, terminal software version and LFT ON (if LFT is set ON). Set Counting APW (x) in grams. (must have APW stored) Print Counting application APW. ® Explorer Series Service Manual Ohaus Corporation www.ohaus.com...
  • Page 78 0 = print unstable data, same as IP; 1 = print stable only , same as SP. 0 = disable  response;;  1  =  enable  response.  Attention:  this  command  only  controls  the  “OK!”   response. ® Ohaus Corporation www.ohaus.com Explorer Series Service Manual...
  • Page 79 Parts Counting Ingredient Adjustment Percent Weighing Check Weighing Dynamic Weighing Filling Totalization Formulation Differential Peak Hold Density Determination Note 3: Unit list Index Unit Index Unit tical tola baht custom_1 custom_2 custom_3 ® Explorer Series Service Manual Ohaus Corporation www.ohaus.com...
  • Page 80 Pin 8: Request to send (hardware handshake) (RTS) USB Interface The Ohaus USB Interface is a unique solution to the problem of connecting a balance to a computer using a Universal Serial Bus (USB). USB devices are categorized into classes such as disk drives, digital cameras, printers, etc.
  • Page 81 When using the USB interface with programs that limit the number of COM port designations (e.g. Ohaus MassTracker allows only COM1, 2, 3, & 4), it may be necessary to assign one of these port numbers to the new virtual port. This can...
  • Page 83 Terminal.bin – image file for the terminal unit Note: Do not change any of the file names. 2. Turn on the balance and connect the USB flash drive to the USB host slot on the back of the terminal. ® Ohaus Corporation www.ohaus.com Explorer Series Service Manual...
  • Page 84 Software update 4. Press [Start] button to start the upgrade process. Note: Keep the USB flash drive connected and make sure the power is balance power is ON during the entire upgrade process. ® Explorer Series Service Manual Ohaus Corporation www.ohaus.com...
  • Page 85 APPENDIX D – FIRMWARE UPGRADE VIA USB 5. Wait approximately 10 minutes for the process to finish. 6. Restart the balance ® Ohaus Corporation www.ohaus.com Explorer Series Service Manual...
  • Page 86 ™ Registered trademark of Ohaus Corporation. The information contained in this manual is believed to be accurate at the time of publication, but Ohaus Corporation assumes no liability arising from the use or misuse of this material. Reproduction of this material is strictly prohibited.

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