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SERVICE MANUAL 

Valor

 

 

5000

 

Scales

 

 
 

 

 

 
 
 
 
 
 
 
 
 

Ohaus Corporation 19A Chapin Road, P.O. Box 2033, Pine Brook, NJ 07058-2033 (973) 377-9000 

Summary of Contents for valor 5000 series

Page 1: ...SERVICE MANUAL Valor 5000 Scales Ohaus Corporation 19A Chapin Road P O Box 2033 Pine Brook NJ 07058 2033 973 377 9000...

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Page 3: ...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 Material in this manual is subject...

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Page 5: ...the Load Cell 3 3 3 4 Replacing the Printed Circuit Board and Display 3 4 3 5 Replacing the Housing Seals 3 5 3 6 Replacing the Function Label 3 6 3 6 Replacing the Plastic Insert 3 6 CHAPTER 4 TESTI...

Page 6: ...ENDIX D GEOGRAPHICAL ADJUSTMENT VALUES TABLE D 1 Geographical Adjustment Values D 1 LIST OF TABLES TABLE NO TITLE Page No 1 1 Specifications 1 2 1 2 Capacity and Readability 1 3 1 3 Functions of Displ...

Page 7: ...1 4 2 Scale drawing of Valor 5000 Load Cell and Weighing Pan 4 6 5 1 Valor 5000 V31X3 Scale Housing Internal Parts 5 2 5 2 Valor 5000 V31X6 Scale Housing Internal Parts 5 4 5 3 Valor 5000 V31XH2 Scal...

Page 8: ...TABLE OF CONTENTS Valor 5000 Series Service Manual iv Ohaus Corporation www ohaus com...

Page 9: ...performed prior to using a scale and after service Appendix B Service Calibration Describes the Service Menu and sub menus which allow authorized service personnel to perform factory Linearity and Spa...

Page 10: ...ies The available repair parts are listed and illustrated in Chapter 5 There are four major replaceable assemblies Cover Assembly with Membrane Switch Load Cell Assembly with Frame Lead Acid Rechargea...

Page 11: ...x 0 001 kg 3000 g x 1 g 6 lb x 0 002 lb 96 oz x 0 05 oz 96 oz x 1 4 oz 6 kg x 0 002 kg 6000 g x 2 g 15 lb x 0 005 lb 240 oz x 1 oz 240 oz x 1 4 oz 15 kg x 0 005 kg 15000 g x 5 g 30 lb x 0 01 lb 480 o...

Page 12: ...solution 30000 30000 30000 30000 Repeatability kg 0 0002 0 0004 0 002 0 002 Linearity kg 0 0002 0 0004 0 002 0 002 Weighing Units g kg lb oz decimal fractional lb oz decimal fractional oz Application...

Page 13: ...are Clears tare if pan is empty Secondary Function long press Off If scale is on turns scale off Units Changes weighing unit Menu Enters menu mode None Menu Function Yes Accepts current setting and ad...

Page 14: ...rechargeable battery should be fully charged The scale can be operated during the charging process The battery is protected against over charging and the scale can remain connected to the AC power lin...

Page 15: ...menu and Menu item The Main menu contains the Sub menus and each Sub menu contains several Menu items Each Menu item contains two or more settings Use the four buttons marked with Yes No Back and Exi...

Page 16: ...s been turned off the scale must be inspected and sealed in accordance with local weights and measures regulations before it can be used in LFT mode again Figure 1 5 Menu lock switch on PCB 1 6 1 Seal...

Page 17: ...ed checks or see the appropriate section of the manual 5 Repair or replace the defective section of the scale Note If more than one symptom is observed approach one area at a time and remember that th...

Page 18: ...onnected from the Printed Circuit Board and at no load when the resistance readings are taken Remove the Load Cell cable connector from the PC Board Using an Ohmmeter measure Load Cell Resistance Read...

Page 19: ...0 Volts dc with the Load cell connected If the voltage is lower disconnect the Load Cell cable from the PCB and measure again If the voltage is 5 Volts dc the Load Cell is defective and must be repla...

Page 20: ...This is the excitation voltage for the Load Cell and is regulated If the voltage is lower replace the PCB See Section 3 4 Then perform Operational Tests See Chapter 4 5 Measure incoming power from th...

Page 21: ...t the calibration value to maximum span value 7 Adjust the Simulator to simulate 0 load 50 load and 100 load for the capacity that the scale is rated for See Table 2 3 for values to use If the resulti...

Page 22: ...e can be many years Valor 5000 Scales can be operated for up to 120 hours per charge Battery life can be maximized by frequent charging 1 Upon receipt of the scale plug in the AC Adapter to a power so...

Page 23: ...IDE 2 2 4 Testing the Battery TABLE 2 4 BATTERY CAPACITY Temperature 25 C 7 00 6 75 6 50 6 25 6 00 5 75 5 50 5 25 5 00 0 20 40 60 80 100 Residual Capacity Valor 5000 Series Service Manual 2 7 Ohaus Co...

Page 24: ...will not turn on using battery power Battery discharged or defective Wiring harness defective or battery clips connection broken Membrane Switch defective PCB is defective Test the battery Replace if...

Page 25: ...it See Section 3 4 Cannot calibrate Incorrect weights LFT lock switch is in locked position software lock menu is set to ON Load Cell is defective PCB is defective Verify that proper weights are used...

Page 26: ...Section 2 2 3 If defective replace it See Section 3 3 Error 21 Checksum error User data menu settings Corrupt checksum error calibration Check menu settings Perform Service Calibration See Appendix B...

Page 27: ...ted Allow one hour for each 5 F 2 7 C temperature change before using the scale After temperature stabilization allow an additional 20 minutes after turning the scale on for the scale electronics to s...

Page 28: ...e Figure 3 1 Note that one of these is smaller and is beneath the Security Slide Battery screws Figure 3 1 Scale Bottom CAUTION Use care in the next step as the Membrane Switch wiring is attached to t...

Page 29: ...ch Cable from the PC Board See Section 3 2 2 Disconnect the Load Cell Cable from the PCB See Figure 3 2 3 Remove the four screws holding the Load Cell Assembly to the Bottom Housing See Figure 3 1 4 L...

Page 30: ...e two screws holding the Load Cell 7 Install the new Load Cell insert the four screws that hold it to the Frame Torque the screws as indicated in Table 4 1 Be sure the Load cell is properly aligned TA...

Page 31: ...th the feeler gauge inserted The resulting gap should be the thickness of the feeler gauge 3 Repeat this procedure for all of the Overload Protection Stops using the appropriate feeler gauges 4 When t...

Page 32: ...replacement PCB 5 Follow these steps in reverse order to install the new PCB 6 Replace the Top Housing and connect the Membrane Switch cable to the PCB 7 Make sure the LFT Security Slide is in the OF...

Page 33: ...he Upper Housing 4 Carefully clean the Top Housing Membrane Switch area removing all traces of adhesive The best method is to use a flat razor blade 5 Insert the cable from the new Membrane Switch thr...

Page 34: ...ttery Do NOT charge the battery with the charger terminals reversed 1 Remove the Top Housing See Section 3 2 2 Disconnect the wire Harness from the Battery 3 Remove the two screws holding the Battery...

Page 35: ...5 15 kg 10 30 kg 4 2 PERFORMANCE TESTS Accurate performance of the Valor 5000 scales is determined by a series of performance tests The displayed readings are compared with the tolerances listed in Ta...

Page 36: ...balance passes the Precision Test 5 If the deviation for any set of readings using the same mass placed on the center of the Pan is greater than the tolerance listed in Tables 1 1 and 1 2 the balance...

Page 37: ...ng to 5d or its lowest setting Do not turn it off D Set the instrument to display the same units as the performance specifications Usually kg g or mg Record Settings Stability Setting ____________ Fil...

Page 38: ...ng and record in the work sheet Delta Reading Mean 7 Calculate the Delta x Delta for each reading and record in worksheet 8 Add the ten Delta x Delta values and divide by 9 9 Calculate the Standard De...

Page 39: ...to use the same reference mass throughout the procedure 1 Place the test mass on the Scale record the weight and remove 2 Place Load 1 on the Scale and press TARE 3 Place the test mass on the Scale re...

Page 40: ...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 5 Maximum allowable change in display...

Page 41: ...6 Move the weight to point D and record the reading 7 If the reading at point A is negative file at points 1 and 4 AT AN ANGLE 8 If the reading at point B is negative file at points 1 and 2 STRAIGHT...

Page 42: ...CHAPTER 4 TESTING Ohaus Corporation www ohaus com 4 8 Valor 5000 Series Service Manual...

Page 43: ...ghly 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...

Page 44: ...IAGRAMS 5 1 VALOR 5000 SERIES SCALES HOUSING INTERNAL PARTS 1 2 3 4 5 6 7 9 10 11 12 13 80 14 8 Figure 5 1 Valor 5000 Series Scales Housing Internal Parts Ohaus Corporation www ohaus com 5 2 Valor 500...

Page 45: ...s 4 2 Membrane Switch 3 Top Housing 4 Load Cell Assembly includes Frame 5 Load Cell 6 Main Printed Circuit Board with LCD 7 LCD Display 8 Bottom Housing 9 Pan 10 Rechargeable Battery Pack 11 Harness f...

Page 46: ...CHAPTER 5 PARTS LISTS DIAGRAMS Ohaus Corporation www ohaus com 5 4 Valor 5000 Series Service Manual...

Page 47: ...Section 1 6 Note Be careful not to touch the scale or the table while calibration is in progress as it will cause the process to fail Span Calibration Procedure Press TARGET Menu until CAL appears Pr...

Page 48: ...lternate first calibration weight value or place the indicated calibration weight on the scale and press Yes C appears followed by the second calibration weight value Place the indicated calibration w...

Page 49: ...must be in the OFF position See Figure 1 5 page 1 8 In the Setup menu LFT must be turned OFF See note In the Lock menu Calibration Lock must be set to OFF See note NOTE This requirement is waived whe...

Page 50: ...ment Factors are listed in Appendix C The default Geo factor is 19 for Europe and 16 for the USA This feature allows authorized personnel to accurately calibrate the scale at a location other than the...

Page 51: ...ashes where n is the first calibration weight PLACE 1 kg 4 Place the requested weight on the Pan and press Yes C appears briefly followed by PLACE n kg where n is the second calibration weight PLACE 3...

Page 52: ...ng numbers In this case the Load Cell must be replaced 1 When RAMP appears press Yes to display the scale s ramp values 2 With an empty Pan record the no load ramp value 3 Place half load on the pan a...

Page 53: ...5 16 16 17 17 18 18 19 19 20 20 21 21 22 22 04 05 05 06 06 07 07 08 08 09 09 10 10 11 11 12 12 13 13 14 14 15 15 16 16 17 17 18 18 19 19 20 20 21 21 22 04 04 05 05 06 06 07 07 08 08 09 09 10 10 11 11...

Page 54: ...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 23 23 24 24 25 25 26 26 27 27 28 28 29 29 30 30 31 22 23 23 24 24 25 25 26 26 27 27...

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Page 56: ...80251139 P N 80251139 SERVICE MANUAL VALOR 5000 SERIES SCALES...

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