OHAUS Valor 3000 Service Manual
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OHAUS Valor 3000 Service Manual

OHAUS Valor 3000 Service Manual

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SERVICE MANUAL
Valor
Valor
Valor
Valor
3000
™
SCALES
Ohaus Corporation 19A Chapin Road, P.O. Box 2033, Pine Brook, NJ 07058-2033 (973) 377-9000

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  • Page 1 SERVICE MANUAL Valor Valor Valor Valor 3000 ™ SCALES Ohaus Corporation 19A Chapin Road, P.O. Box 2033, Pine Brook, NJ 07058-2033 (973) 377-9000...
  • Page 3 3000 SCALES 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 5: Table Of Contents

    4.5.5 Adjusting Off Center Load................4-6 CHAPTER 5 DRAWINGS AND PARTS LISTS Valor 3000 Xtreme Scales: Housing & Internal Parts ..........5-2 Valor 3000 Xtreme W Scales: Housing & Internal Parts .......... 5-4 Ohaus Corporation www.ohaus.com Valor™ 3000 Series Service Manual...
  • Page 6 Valor 3000 Display Indicators ................1-5 LFT/Cal Lock Switch................... 1-6 Scale Bottom ...................... 3-2 Technique for separating Top and Bottom Housing on Valor 3000 ..... 3-2 Red lock between battery compartments ............3-3 Printed Circuit Board and Display ............... 3-4 Bottom of Valor 3000 Xtreme W, with Battery Cover on........

  • Page 7: Table No

    TABLE NO. TITLE Page No. Valor 3000 Xtreme Scales: Housing & Internal Parts .......... 5-2 Valor 3000 Xtreme W Scales: Housing & Internal Parts........5-4 RS232 Interface connected to Service Interface, connected to the PCB..... C-1 Service Interface fits into the RS232 Interface ............ C-1 Com Port Configuration screen with correct settings...........
  • Page 8 TABLE OF CONTENTS Valor™ 3000 Series Service Manual Ohaus Corporation www.ohaus.com...

  • Page 9: Chapter 1 Getting Started

    INTRODUCTION This service manual contains the information needed to perform routine maintenance and service on the Ohaus Valor 3000 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, specifications, and the mechanical and electronic functions of the scale.

  • Page 10: Tools And Test Equipment Required

    3. Communications Service Interface – PN 72203450 SPECIFICATIONS Complete specifications for the Ohaus Valor 3000 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 11: Specifications

    1/8oz 1/8oz 1/8oz 10.14 x 101.45 x 202.9 x 0.01 0.05 6.7630 x 67.630 x 101.45 x 202.90 x 10.140 x 101.44 x 202.90 x 0.0005 0.005 0.05 0.05 0.005 0.02 0.05 Valor™ 3000 Series Service Manual Ohaus Corporation www.ohaus.com...

  • Page 12: Scale Operation

    Jack plug to the input jack. Seal Storage Receptacle Figure 1-1. Power Connection and Seal. 1.5.1 OVERVIEW OF THE CONTROLS Figure 1-2. Valor 3000 Xtreme & Xtreme W Displays. TABLE 1-3. FUNCTIONS OF DISPLAY CONTROLS Button Action Functions O/T On/Off...

  • Page 13: Overview Of The Display Indicators

    1.5.5 Menu Setup Programmable features of the Valor 3000 scales are contained in menus which are accessed through the Display Panel’s control switches. The Menu Structure is described in Section 1.8. (For more detail on using the menus, see the Instruction Manual.)

  • Page 14: Legal For Trade (Lft)

    11. Reconnect the AC power, press O/T/On/Off to turn on the scale. During power on, the display sequence will now include: “LFT.” This message confirms the proper setting of the LFT mode and the hardware lock switch. Ohaus Corporation www.ohaus.com Valor™ 3000 Series Service Manual...

  • Page 15: Menu Structure

    CHAPTER 1 GETTING STARTED Menu Structure Programmable features of the Valor 3000 are contained in menus which are accessed through the Display Panel’s control switches. The menu structure is illustrated below. (For more detail on using the menus, see the Instruction Manual.) TABLE 1-5.
  • Page 16 CHAPTER 1 GETTING STARTED Ohaus Corporation www.ohaus.com Valor™ 3000 Series Service Manual...

  • Page 17: 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™ 3000 Series Service Manual...

  • Page 18: Diagnostic Guide

    Continue to weigh with less accurate accurate percent weighing. results Menus are locked Scale is set for LFT. Turn LFT off. (See Section 1.7.) out: Cal, Stab, AZT, Filter, Power On Unit or Global Reset Ohaus Corporation www.ohaus.com Valor™ 3000 Series Service Manual...

  • Page 19: Chapter 3 Maintenance Procedures

    5. Make a visual inspection for faulty connectors, wiring, and loose hardware. OPENING THE SCALE Opening the Valor 3000 scale varies slightly according to the specific model, as detailed below. Use these procedures in order to replace the Load Cell, the Printed Circuit Board and/or LCD Display.

  • Page 20: Opening Valor 3000 Standard And Washable Models

    CHAPTER 3 MAINTENANCE PROCEDURES 3.2.1 Opening Valor 3000 Standard and Washable Models Common hand tools are sufficient to disassemble the Valor 3000 scales. Turn the scale off and unplug the power cord before you begin. 1. Remove the Weighing Pan: pry off the...

  • Page 21: Replacing The Load Cell

    10. To assemble the Housing, follow the steps in Section 3.2.1 in reverse order. 11. Configure the Scale. (See Appendix C.) Note: There is no need to disassemble the Load Cell. It is supplied as an assembled unit. (See Chapter 5 for parts lists.) Valor™ 3000 Series Service Manual Ohaus Corporation www.ohaus.com...

  • Page 22: Replacing The Printed Circuit Board And Display

    PCB, and unsoldering the 24 fine lead-wires connecting it to the PCB. When installing the new LCD Display, carefully feed the lead-wires through their holes, then insert the two screws, and finally solder the 24 lead-wires. Ohaus Corporation www.ohaus.com Valor™ 3000 Series Service Manual...

  • Page 23: Replacing The Housing Seals

    Legal-For-Trade (LFT) switch cover. (See Figure 3-6) 3. Remove the screws holding the Figure 3-6. Bottom of Valor 3000 Xtreme W. Bottom Plate. Then lift off the Bottom Plate. (See Figure 3-6) 4. Carefully position the Bottom Plate Seal to align with the matching holes on the Bottom Plate.

  • Page 24: Replacing The Function Label

    Plastic Insert to remove it. Then place the new Insert where the old one was. (See Figure 3-9.) Tabs on Plastic Insert Figure 3-9. Plastic Insert, viewed from inside Top Housing. Ohaus Corporation www.ohaus.com Valor™ 3000 Series Service Manual...

  • Page 25: Chapter 4 Testing

    4.1.1 TEST MASSES REQUIRED The masses required to test the Ohaus Valor 3000 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. CALIBRATION MASS VALUES...

  • Page 26: Performance Tests

    CHAPTER 4 TESTING Performance Tests Accurate performance of the Valor 3000 scales is determined by a series of four performance tests. The displayed readings are compared with the tolerances listed in Tables 4-2 and 4-3. Tolerance values are expressed in counts. A one-count difference is shown in the last digit on the scale display.

  • Page 27: 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 4-3) with the ten (10) readings. Valor™ 3000 Series Service Manual Ohaus Corporation www.ohaus.com...

  • Page 28: Repeatability Worksheet

    Note: If the balance 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™ 3000 Series Service Manual...

  • Page 29: Linearity Test

    5. Maximum allowable change in displayed weight readings for each of the four positions can be found in Specifications Tables (Chapter 1). If this maximum is exceeded, follow procedures in Section 4.5.5, Adjusting Off Center Load. Valor™ 3000 Series Service Manual Ohaus Corporation www.ohaus.com...

  • Page 30: Adjusting Off Center Load

    Weighing Pan’s center, with points A – D indicated Figure 4-2. Scale drawing of Valor 3000 Load Cell and Weighing Pan. 1. Place the test weight in the center of the Weighing Pan. 2. Tare the balance. 3. Move the weight to point A and record the reading.
  • Page 31 CHAPTER 5 PARTS LISTS & DIAGRAMS This section of the manual contains exploded views for the Valor 3000 series scales. The exploded view drawings are designed to identify the parts which can be serviced on the scale in the field.
  • Page 32 CHAPTER 5 PARTS LISTS & DIAGRAMS VALOR 3000 XTREME SCALES: HOUSING & INTERNAL PARTS Figure 5-1. Valor 3000 Xtreme Scales: Housing & Internal Parts. Ohaus Corporation www.ohaus.com Valor™ 3000 Series Service Manual...

  • Page 33: Valor 3000 Xtreme Scales: Housing & Internal Parts

    CHAPTER 5 PARTS LISTS & DIAGRAMS VALOR 3000 XTREME SCALES: HOUSING & INTERNAL PARTS TABLE 5-1. VALOR 3000 XTREME SCALES: HOUSING & INTERNAL PARTS Drawing Item Description Pan, Square, 146mm x 158mm Pan Support Square Pan, Round, 120mm Pan Support Round...
  • Page 34 CHAPTER 5 PARTS LISTS & DIAGRAMS VALOR 3000 XTREME W SCALES: HOUSING & INTERNAL PARTS Figure 5-5. Valor 3000 Xtreme W Scales: Housing & Internal Parts. Ohaus Corporation www.ohaus.com Valor™ 3000 Series Service Manual...

  • Page 35: Valor 3000 Xtreme W Scales: Housing & Internal Parts

    CHAPTER 5 PARTS LISTS & DIAGRAMS VALOR 3000 XTREME W SCALES: HOUSING & INTERNAL PARTS TABLE 5-5. VALOR 3000 XTREME W SCALES: HOUSING & INTERNAL PARTS Drawing Item Description Pan, Square, 146mm x 158mm Pan Support Square Load Cell Seal Kit, IP Models...
  • Page 36 CHAPTER 5 PARTS LISTS & DIAGRAMS Ohaus Corporation www.ohaus.com Valor™ 3000 Series Service Manual...

  • Page 37: Appendix A Standard Calibration

    Then try to calibrate again. If it continues to fail, there may be an internal problem. To resolve internal problems, follow procedures in Chapter 3. Valor™ 3000 Series Service Manual Ohaus Corporation www.ohaus.com...
  • Page 38 APPENDIX A STANDARD CALIBRATION Ohaus Corporation www.ohaus.com Valor™ 3000 Series Service Manual...

  • Page 39: Appendix B The Service Menu

    Press Yes to perform Linear Calibration. (See next page.) Note: Be careful not to touch the scale or the table while calibration is in progress, as it will cause the process to fail. Valor™ 3000 Series Service Manual Ohaus Corporation www.ohaus.com...

  • Page 40: Linear Calibration

    Done After the full-capacity value is acquired, the display shows done for 2 seconds and returns to LIN. Span Press No to move to Span calibration. Then press Yes. Ohaus Corporation www.ohaus.com Valor™ 3000 Series Service Manual...

  • Page 41: Span Calibration

    Then try to calibrate again. If it continues to fail, there may be an internal problem. To resolve internal problems, follow procedures in Chapter 3. Valor™ 3000 Series Service Manual Ohaus Corporation www.ohaus.com...

  • Page 42: Geographical Adjustment Factor (Geo

    Press No until the desired setting appears. Values from 1 to 31 are available. See Appendix D to determine the correct value. Press Yes to accept the value shown on the display. The menu returns to GEO Ohaus Corporation www.ohaus.com Valor™ 3000 Series Service Manual...

  • Page 43: Expanded Readability (E.pand

    If you selected ON to activate E.PAND mode, the scale will remain in high resolution (readability) until it is turned off. When the scale is switched off E.PAnd is automatically set to off. Valor™ 3000 Series Service Manual Ohaus Corporation www.ohaus.com...
  • Page 44 APPENDIX B THE SERVICE MENU Ohaus Corporation www.ohaus.com Valor™ 3000 Series Service Manual...

  • Page 45: Appendix C Software Service Tool Instructions

    The Software Service Tool (Part Number 80252509) is required when either a main PC Board or a Load Cell is replaced in a Valor 3000 scale. It is used to re-configure the scale to its original parameters in the case of a PCB replacement, or new parameters in the case of a Load Cell replacement.
  • Page 46 8. The communications parameters should appear mid-screen. Correct values are: Baud = 2400 ByteSize = 7 Parity = None If the settings do not match, click the arrow next to the parameter and select the correct value. (See Figure C-4.) Ohaus Corporation www.ohaus.com Valor™ 3000 Series Service Manual...
  • Page 47 Figure C-5. Config Tool’s Test Command screen. – Enter a “P” command. The scale should respond with a weight value (e.g., 0.02g). – Enter a “V” command. The response should be the software version (e.g., Sr: 1.03). Valor™ 3000 Series Service Manual Ohaus Corporation www.ohaus.com...

  • Page 48: Configuring The Scale (After Replacing The Pcb Or Load Cell

    4. The bar (G) is a graphical measure of the Load Cell output currently being used. 5. Turn the scale off, perform a Service Calibration (see Appendix B), followed by Operational and Performance tests (Chapter 4). Ohaus Corporation www.ohaus.com Valor™ 3000 Series Service Manual...

  • Page 49: Appendix Dgeographical Adjustment Values

    43°26′ - 44°32′ 44°32′ - 45°38′ 45°38′ - 46°45′ 46°45′ - 47°51′ 47°51′ - 48°58′ 48°58′ - 50°06′ 50°06′ - 51°13′ 51°13′ - 52°22′ 52°22′ - 53°31′ 53°31′ - 54°41′ 54°41′ - 55°52′ Valor™ 3000 Service Manual Ohaus Corporation www.ohaus.com...
  • Page 50 63°30′ - 64°55′ 64°55′ - 66°24′ 66°24′ - 67°57′ 67°57′ - 69°35′ 69°35′ - 71°21′ 71°21′ - 73°16′ 73°16′ - 75°24′ 75°24′ - 77°52′ 77°52′ - 80°56′ 80°56′ - 85°45′ 85°45′ - 90°00′ Ohaus Corporation www.ohaus.com Valor™ 3000 Service Manual...
  • Page 52 *80252591* P/N 80152591 SERVICE MANUAL: Valor 3000 SERIES SCALES...

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