OHAUS VALOR 4000 Service Manual
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OHAUS VALOR 4000 Service Manual

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SERVICE MANUAL
VALOR
VALOR
Ohaus Corporation, 7 Campus Drive, Suite 310, Parsippany, NJ 07054 (973) 377-9000
4000
™
2000
™

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Summary of Contents for OHAUS VALOR 4000

  • Page 1 SERVICE MANUAL VALOR 4000 ™ 2000 VALOR ™ Ohaus Corporation, 7 Campus Drive, Suite 310, Parsippany, NJ 07054 (973) 377-9000...
  • Page 2 VALOR ™ 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.

  • Page 4: Table Of Contents

    CHAPTER 1 GETTING STARTED Introduction ......................1-1 Service Facilities ......................1-1 Tools and Test Equipment Required ................1-1 Specifications – Valor 4000 ..................1-2 Specifications – Valor 2000 ..................1-2 Scale Operation Valor 4000 ..................1-3 1.6.1 Overview of the Controls ...................1-3 1.6.2 Power On/Off ....................1-4 1.6.3 Menu Setup ......................1-5...
  • Page 5 B.10 End Menu ....................... B-4 LIST OF TABLES TABLE NO. TITLE Page No. Specifications – Valor 4000 .................1-2 Specifications – Valor 2000 .................1-2 Controls Functions Valor 4000 ................1-3 Battery Charge Status ..................1-4 Menu Structure ....................1-5 Controls Functions Valor 2000 ................1-6 Battery Charge Status ..................1-7...
  • Page 6 Housing & Internal Parts Valor 2000PW ..............5-7 Housing & Internal Parts Valor 2000XW ..............5-9 LIST OF ILLUSTRATIONS FIGURE NO. TITLE 1-1. Front Display with controls Valor 4000 ..............1-3 1-2. Back Display Valor 4000 ..................1-4 1-3. Front Display with controls Valor 2000 ..............1-6 1-4.

  • Page 7: Chapter 1 Getting Started

    INTRODUCTION This service manual contains the information needed to perform routine maintenance and service on the Ohaus Valor 2000/4000 Series scales. Familiarity with the scale’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 and test equipment, specifications, and the mechanical and electronic functions of the scale.

  • Page 8: Specifications - Valor 4000

    CHAPTER 1 GETTING STARTED SPECIFICATIONS - Valor 4000 Complete specifications for the Ohaus Valor 4000 scales are listed in Table 1-1. When a scale has been serviced, it must meet the specifications listed in the table. Before servicing the scale, determine what specifications are not met.

  • Page 9: Scale Operation Valor 4000

    CHAPTER 1 GETTING STARTED SCALE OPERATION – VALOR 4000 This section contains information on the basic operation of the Valor 4000 scale. 1.6.1 OVERVIEW OF THE CONTROLS Figure 1-1. Valor 4000 Front Display with controls. TABLE 1-3. Control functions Valor 4000...

  • Page 10: Power On/Off

    When [lo.bat] is displayed, the scale will shut off. Charging the scale must be performed in a dry environment. CAUTION: Battery is to be replaced only by an authorized Ohaus service dealer. Risk of explosion can occur if the rechargeable battery is replaced with the wrong type or if it is not properly connected.

  • Page 11: Menu Setup

    CHAPTER 1 GETTING STARTED 1.6.3 Menu Setup Programmable features of the Valor 4000 scales are contained in menus which are accessed through the Display Panel’s control switches. See the Instruction Manual for a full description of the menus and how to access them.

  • Page 12: Scale Operation Valor 2000

    : Enters user menu Notes: Short Press: Press less than 2.5 seconds. Long Press: Press and hold for more than 2.5 seconds. Extended Press: Press and hold for more than 5 seconds. Ohaus Corporation www.ohaus.com Valor™ 2000/4000 Series Service Manual...

  • Page 13: Power On/Off

    When [lo.bat] is displayed, the scale will shut off. Charging the scale must be performed in a dry environment. CAUTION: Battery is to be replaced only by an authorized Ohaus service dealer. Risk of explosion can occur if the rechargeable battery is replaced with the wrong type or if it is not properly connected.

  • Page 14: Menu Setup

    GEO settings. Press Zero key to enter GEO settings and then press Cal key to increase the value. Press Zero key to confirm, [end] will be displayed. Press Zero key to exit the menu and return to weighing mode. Ohaus Corporation www.ohaus.com Valor™ 2000/4000 Series Service Manual...

  • Page 15: Legal For Trade

    CHAPTER 1 GETTING STARTED 1.8 LEGAL FOR TRADE Note: This section applies to Valor 4000 only. When the scale is used in trade or a legally controlled application it must be set up, verified and sealed in accordance with local weights and measures regulations. It is the responsibility of the purchaser to ensure that all pertinent legal requirements are met.

  • Page 16: Chapter 2 Troubleshooting

    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. Valor™ 2000/4000 Series Service Manual...

  • Page 17: Checking Load Cells For Trouble

    Load Cell cable from the PCB and measure again. If the voltage is not 4.6~4.7 Volts dc, the Load Cell is defective and must be replaced. If the voltage remains low, the PCB is defective and must be replaced. Ohaus Corporation www.ohaus.com Valor™ 2000/4000 Series Service Manual...
  • Page 18 1.489 2.239 V22xWE1501T / 1.5kg V41xWE3T / 3kg 0.4434 1.3434 2.2434 V22xWE3T / 3kg V41xWE6T / 6kg 0.2217 1.1217 2.0217 V22xWE6T / 6kg V41xWE15T / 15kg 0.11085 1.23585 2.36085 V22xWE15T / 15kg Valor™ 2000/4000 Series Service Manual Ohaus Corporation www.ohaus.com...

  • Page 19: Testing The Printed Circuit Board (Pcb)

    Load Cell, allowing the scale to be separated from the Load Cell for the purposes of troubleshooting and calibration. The Load Cell used in the scale is rated at 2mV/V output with a 4.6~4.7 Volt excitation voltage applied. Ohaus Corporation www.ohaus.com Valor™ 2000/4000 Series Service Manual...
  • Page 20 PCB is functional. If the scale readings vary, or do not agree with readings in Table 2-3, the Main PC Board is defective and should be replaced. (See Chapter 3.) Valor™ 2000/4000 Series Service Manual Ohaus Corporation www.ohaus.com...

  • Page 21: Diagnostic Guide

    Change the value to net / gross value NO.ACC not allowed to be accumulated and then do the accumulation Battery fails to charge Have battery replaced by OHAUS Battery is defective fully authorized service dealer. Ohaus Corporation www.ohaus.com Valor™ 2000/4000 Series Service Manual...

  • Page 22: Chapter 3 Maintenance Procedures

    CHAPTER 3 MAINTENANCE PROCEDURES PREVENTIVE MAINTENANCE Ohaus scales 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 scale 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 23: Separating The Top And Bottom Housings

    11. Separate Top Housing from Bottom Housing. Avoid straining the cables that connect the Main PCB to the parts in the Bottom Housing. (Lay the two housings close to each other, so cable is not strained.) Ohaus Corporation www.ohaus.com Valor™ 2000/4000 Series Service Manual...

  • Page 24: Main Printed Circuit Board

    4. If either the Main PCB or the Load Cell is to be replaced, note the order of the wire colors and then disconnect the Load Cell Cable from the Main PCB. (See Figure 3-2.) Figure 3-3. Main Printed Circuit Board. Valor™ 2000/4000 Series Service Manual Ohaus Corporation www.ohaus.com...

  • Page 25: Removing/Replacing The Load Cell

    4. Position the shim and Load Cell Frame on top of the Load Cell. Insert the bolts and and tighten them. (See Table 3-1 for torque settings.) 5. Connect the Load Cell cables to the PCB. (See Figure 3-2.) 6. Use glue to seal the connector. Ohaus Corporation www.ohaus.com Valor™ 2000/4000 Series Service Manual...

  • Page 26: Setting The Overload Stops

    Note: Be careful not to overload the Load Cell, which would damage it. Figure 3-5. Overload Stops. 2. Repeat this for all four corners. 3. Test the scale to see if full capacity can be achieved. Valor™ 2000/4000 Series Service Manual Ohaus Corporation www.ohaus.com...
  • Page 27 1.5kg V22xWE1501T V41xWE3T V22xWE3T V41xWE6T 10kg V22xWE6T V41xWE15T 15kg 20kg V22xWE15T Load Cell Figure 3-6. Gap position of corners A, B, C, D. (A & B represent the front of the scale.) Ohaus Corporation www.ohaus.com Valor™ 2000/4000 Series Service Manual...

  • Page 28: Removing/Replacing The Rechargeable Battery

    The Function Label may need to be replaced. (See Chapter 5 for parts information.) Use a broad knife to remove the label. Clean the glue residue from the Housing surface. Then carefully place the new label where the old one was. Valor™ 2000/4000 Series Service Manual Ohaus Corporation www.ohaus.com...

  • Page 29: Chapter 4 Testing

    4.1.1 TEST MASSES REQUIRED The masses required to test the Ohaus Valor 2000/4000 scales must meet the requirements of ASTM Class 4 or OIML F2 Tolerance. The mass values are listed in Table 4-1. TABLE 4-1. TEST MASS VALUES...

  • Page 30: Performance Tests

    If the scale does not meet specifications, move it to a suitable location, ensure that it 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 Valor™ 4000 Series Service Manual...

  • Page 31: Repeatability Test

    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 (Table 4-2) with the ten (10) readings. Valor™ 4000 Series Service Manual Ohaus Corporation www.ohaus.com...
  • Page 32 Calculate the Standard Deviation by applying the square root of the result from step 8. =___________ Standard Deviation Note: If the balance does not meet specifications, move it to a suitable location, ensure that it is level, and try again. Ohaus Corporation www.ohaus.com Valor™ 4000 Series Service Manual...

  • Page 33: Linearity Test

    3. Move the mass halfway (between the center and the edge) to the front of the Pan. Note any differences in the displayed weight reading. 4. Repeat the test for the back, left, and right position of the Pan. Valor™ 4000 Series Service Manual Ohaus Corporation www.ohaus.com...

  • Page 34: Adjusting Off Center Load

    Side view of Load Cell Weighing Pan’s center, with points A – D indicated Figure 4-1. Scale drawing of Valor 4000 Load Cell and Weighing Pan. 1. Place the test weight in the center of the Weighing Pan. 2. Tare the balance.
  • Page 35 In all cases where a part is replaced, the scale must be thoroughly checked after the replacement is made. The scale MUST meet the parameters of all applicable specifications in this manual. If further technical information is needed, please contact your local Ohaus distributor, or: www.ohaus.com Ohaus Corporation,...
  • Page 36 CHAPTER 5 PARTS LISTS & DIAGRAMS Valor 4000PW SCALES: PARTS Figure 5-1. Valor 4000PW Scales: Parts. Ohaus Corporation www.ohaus.com Valor™ 2000/4000 Series Service Manual...
  • Page 37 30026168 Manual EN ES FR DE IT V41 30035604 SP Packaging Box V22 V41 30035605 SP Packaging complete V22PW V41PW Note: For parts numbers, see your local Ohaus distributor, or visit www.ohaus.com. Valor™ 2000/4000 Series Service Manual Ohaus Corporation www.ohaus.com...
  • Page 38 CHAPTER 5 PARTS LISTS & DIAGRAMS Valor 4000XW SCALES: PARTS Figure 5-2. Valor 4000XW Scales: Parts. Ohaus Corporation www.ohaus.com Valor™ 2000/4000 Series Service Manual...
  • Page 39 SP Power Adapter body 46001780 SP Power Adapter (all plugs) 30035604 SP Packaging Box Carton V22PW V41P(X)W 30035605 SP Packaging complete V22PW V41PW Note: For parts numbers, see your local Ohaus distributor, or visit www.ohaus.com. Valor™ 2000/4000 Series Service Manual Ohaus Corporation www.ohaus.com...
  • Page 40 CHAPTER 5 PARTS LISTS & DIAGRAMS Valor 2000PW SCALES: PARTS Figure 5-3. Valor 2000PW Scales: Parts. Ohaus Corporation www.ohaus.com Valor™ 2000/4000 Series Service Manual...
  • Page 41 SP Packaging Box Carton V22 V41 30035605 SP Packaging complete V22PW V41PW 46001802 SP Power Adapter body 46001780 SP Power Adapter (all plugs) Note: For parts numbers, see your local Ohaus distributor, or visit www.ohaus.com. Valor™ 2000/4000 Series Service Manual Ohaus Corporation www.ohaus.com...
  • Page 42 CHAPTER 5 PARTS LISTS & DIAGRAMS Valor 2000XW SCALES: PARTS Figure 5-3. Valor 2000XW Scales: Parts. Ohaus Corporation www.ohaus.com Valor™ 2000/4000 Series Service Manual...
  • Page 43 SP Packaging Box Carton V22 V41 30035605 SP Packaging complete V22PW V41PW 46001802 SP Power Adapter body 46001780 SP Power Adapter (all plugs) Note: For parts numbers, see your local Ohaus distributor, or visit www.ohaus.com. Valor™ 2000/4000 Series Service Manual Ohaus Corporation www.ohaus.com...

  • Page 44: Appendix A Standard Calibration

    4. Before performing the calibration, be sure to have the appropriate calibration weights as listed in table A-1(Valor 4000) and table A-2(Valor 2000). 5. Ensure that the LFT PINs lock is set to unlocked positions. 6. Or adjust the GEO setting according to your location (see instruction manual).

  • Page 45: Setup And Calibration

    No to select an alternate weight. [--C--] will be displayed while the reading is stored. done 5. The display will show [done] if the calibration was successful. The scale returns to the previous application mode and is ready for use. Ohaus Corporation www.ohaus.com Valor™ 2000/4000 Series Service Manual...

  • Page 46: Appendix B Service Calibration

    Ramp Span DivS S.Unit Expand Reset B.2 Entering the Service Menu Turn the scale off. ramMp Press and hold the On/Zero and Tare keys simultaneously for 8 ramMp seconds until is displayed. Valor™ 2000/4000 Series Service Manual Ohaus Corporation www.ohaus.com...

  • Page 47: Ramp Menu

    (The example shows a 3 kg span weight on the pan.) SPAN SpaN If linearity calibration was successful, appears. Press YES to enter the Service Span Calibration menu or or NO to advance to the next menu item. Ohaus Corporation www.ohaus.com Valor™ 2000/4000 Series Service Manual...

  • Page 48: Service Span Calibration

    Press YES to accept the setting and move to the Service Grad menu item. Press NO to enter another value using the numeric keypad and then press YES to store the new value. Valor™ 2000/4000 Series Service Manual Ohaus Corporation www.ohaus.com...

  • Page 49: S.unit

    YES = Reset the Service menu to factory defaults. NO = keep current setting B.11 End Menu e.N.D e.N.D When appears, press YES to return to exit the service menu, or No to advance to the CAP menu. Ohaus Corporation www.ohaus.com Valor™ 2000/4000 Series Service Manual...

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Valor 2000

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