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SERVICE MANUAL

Valor

™

1000W

Scales

Ohaus Corporation, 7 Campus Drive, Suite 310, Parsippany, NJ 07054 (973) 377-9000

Summary of Contents for Valor 1000W

Page 1: ...SERVICE MANUAL Valor 1000W Scales Ohaus Corporation 7 Campus Drive Suite 310 Parsippany NJ 07054 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: ...e 3 1 3 1 1 Preventive Maintenance Checklist 3 1 3 2 Service Strategy 3 1 3 3 Opening the Scale 3 1 3 4 Removing Replacing the Main PCB 3 3 3 5 Removing Replacing the Rear Display PCB 3 3 3 6 Removing...

Page 6: ...lor 1000W V11PW15 Scales Parts 5 7 5 2 Valor 1000W V11PW30 Scales Parts 5 9 LIST OF ILLUSTRATIONS FIGURE NO TITLE 1 1 Valor 1000W Control Panel 1 4 1 2 Strain Gauge Load Cell 1 5 1 3 Downward force on...

Page 7: ...Testing Contains a list of required test masses an operational test segment display test performance tests and adjustments Chapter 5 Drawings and Parts Lists Contains exploded views of Valor 1000W sc...

Page 8: ...3 V11PW6 V11PW15 V11PW30 Capacity x Readability Max x d non approved 3 x 0 0005 kg 6 6 x 0 001 lb 6 x 0 001 kg 13 x 0 002 lb 15 kg x 0 002 kg 33 x 0 005 lb 30 kg x 0 005 kg 66 x 0 1 lb Max displayed r...

Page 9: ...lor 1000W Scales are listed in the tables When a scale has been serviced it must meet the specifications listed in the tables Before servicing the scale determine what specifications are not met 1 6 S...

Page 10: ...otected against over charging and the scale can remain connected to the AC power line 1 7 HOW LOAD CELLS OPERATE Load Cells are devices that convert force into a signal The Valor 1000W has a Strain Ga...

Page 11: ...ng the electrical resistance of the circuit At zero load all strain gauges are unstressed Weight placed on the Platform bends the beam causing two gauges to stretch and two to compress in opposition c...

Page 12: ...is read by the Indicator which converts it to a numeric value and shows it visually This output value increases as weight is loaded to the Load Cell For example a 500kg Load Cell with 2mV V output and...

Page 13: ...tive section of the balance 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 man...

Page 14: ...4 289 10 289 10 289 10 289 10 3 Perform an Output Voltage Test Measure the no load 50 load and full load output The reading should meet the Load Cell specifications The Load Cell output should be very...

Page 15: ...ected from the PCB These measurements represent the output of the Load Cell Record measurements at Zero Load 50 and full scale capacities See Table 2 3 for typical readings NOTE Table 2 3 indicates ty...

Page 16: ...should read 12 V AC If voltage is not present replace the input connector If OK proceed Caution disconnect the AC adapter and remove power and or batteries from the balance for this procedure to preve...

Page 17: ...or is not installed during power on Remove excess weight or install pan and re zero OVEr Total weight on pan exceeds full scale 9d Reduce excess load from the pan n OVEr Accumulation records exceed 99...

Page 18: ...CHAPTER 2 DIAGNOSTIC GUIDE Ohaus Corporation www ohaus com 2 6 Valor 1000W Series Service Manual...

Page 19: ...pected and checked regularly as follows 1 Remove the Pan and Sub Pan to inspect and clean the area beneath the Pan 2 Clean the outside of the scale using a damp cloth with warm water CAUTION DO NOT US...

Page 20: ...overs Figure 3 2 PCB Housing 3 4 Removing Replacing the Main PCB If the Main PCB is suspected of being faulty they should be replaced as follows 1 Disconnect the Cable connecting the Main PCB to the s...

Page 21: ...ystem See Figure 3 2 Figure 3 3 Main Printed Circuit Board Note cable for Rear Display PCB 3 5 Removing Replacing the Rear Display PCB 1 Disconnect the Cable connecting the Main PCB to Rear Display PC...

Page 22: ...olts are tightened to about 50 in lb torque Note There is a shim between the Load Cell Frame and the Load Cell Be careful not to lose it 4 Lift up the bottom housing and remove the two screws securing...

Page 23: ...ire leads Note Be careful not to short circuit the battery leads 3 Pull the quick connect tabs free of the battery posts and lift out the battery Figure 3 7 Rechargeable battery 4 Position the replace...

Page 24: ...CHAPTER 3 MAINTENANCE PROCEDURES Ohaus Corporation www ohaus com 3 6 Valor 1000W Series Service Manual...

Page 25: ...ents of ASTM Class 4 or OIML F2 Tolerance The mass values are listed in Table 4 1 TABLE 4 1 TEST MASS VALUES Model Weight g V11PW3X 500 1000 2000 3000 V11PW6X 1500 3000 4500 6000 V11PW15X 3000 4000 90...

Page 26: ...fication for each model listed in Table 1 1 1 Power on the balance The reading on the display should be 0g 2 Select a mass weighing near the maximum capacity of the balance and place it on the center...

Page 27: ...y test set up the instrument as follows Set Up Follow the steps in Appendix A Section A 2 Setup and Calibration Record Settings Zero Tracking Setting ____________ Displayed Units ____________ Mass Use...

Page 28: ...the Mean average Mean Reading 1 Reading 2 Reading 3 Reading 4 Reading 5 Reading 6 Reading 7 Reading 8 Reading 9 Reading 10 10 Mean ________ 6 Calculate the Delta for each reading and record in the wo...

Page 29: ...ce the test mass on the Scale record the weight and remove 6 Place Load 3 on the Scale and press ON O T 7 Place the test mass on the Scale and record the weight 8 The difference in the weights of the...

Page 30: ...ding 4 Move the weight to point B and record the reading 5 Move the weight to point C and record the reading 6 Move the weight to point D and record the reading 7 If the reading at point A is negative...

Page 31: ...le in the field NOTE 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 thi...

Page 32: ...CHAPTER 5 PARTS LISTS DIAGRAMS Ohaus Corporation www ohaus com 5 2 Valor 1000W Series Service Manual 5 2 VALOR 1000W V11PW3 SCALES PARTS Figure 5 1 Valor 1000W V11PW3 Scales Parts...

Page 33: ...ARTS LISTS DRAWINGS Valor 1000W Series Service Manual 5 3 Ohaus Corporation www ohaus com TABLE 5 1 VALOR 1000W V11PW3 SCALES PARTS Note For parts numbers see your local Ohaus distributor or visit www...

Page 34: ...CHAPTER 5 PARTS LISTS DIAGRAMS Ohaus Corporation www ohaus com 5 4 Valor 1000W Series Service Manual 5 3 VALOR 1000W V11PW6 SCALES PARTS Figure 5 2 Valor 1000W V11PW6 Scales Parts...

Page 35: ...ARTS LISTS DRAWINGS Valor 1000W Series Service Manual 5 5 Ohaus Corporation www ohaus com TABLE 5 2 VALOR 1000W V11PW6 SCALES PARTS Note For parts numbers see your local Ohaus distributor or visit www...

Page 36: ...CHAPTER 5 PARTS LISTS DIAGRAMS Ohaus Corporation www ohaus com 5 6 Valor 1000W Series Service Manual 5 4 VALOR 1000W V11PW15 SCALES PARTS Figure 5 3 Valor 1000W V11PW15 Scales Parts...

Page 37: ...ARTS LISTS DRAWINGS Valor 1000W Series Service Manual 5 7 Ohaus Corporation www ohaus com TABLE 5 3 VALOR 1000W V11PW15 SCALES PARTS Note For parts numbers see your local Ohaus distributor or visit ww...

Page 38: ...CHAPTER 5 PARTS LISTS DIAGRAMS Ohaus Corporation www ohaus com 5 8 Valor 1000W Series Service Manual 5 5 VALOR 1000W DUAL DISPLAY V11PW30 SCALES PARTS Figure 5 4 Valor 1000W V11PW30 Scales Parts...

Page 39: ...ARTS LISTS DRAWINGS Valor 1000W Series Service Manual 5 9 Ohaus Corporation www ohaus com TABLE 5 4 VALOR 1000W V11PW30 SCALES PARTS Note For parts numbers see your local Ohaus distributor or visit ww...

Page 40: ...CHAPTER 5 PARTS LISTS DIAGRAMS Ohaus Corporation www ohaus com 5 10 Valor 1000W Series Service Manual...

Page 41: ...11PW15 2g x 2 Kg x 3 or g x 03333333 15 000kg or 15000g x 3 3 000 V11PW30 5g x 5 Kg x 3 or g x 0 30 000kg or 30000g x 3 3 000 Note Be sure units are set to kg before starting calibration 1 Turn on the...

Page 42: ...accept 0 or M or TARE switch then press ZERO to accept E___3 7 The display will show Load 0 Make sure pan is empty then press ZERO to accept CAL 0 appears then Load F Load 0 If span weight is not avai...

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Page 44: ...P N XXXXXXXX SERVICE MANUAL Valor 1000W SERIES SCALES...

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