OHAUS VALOR 4000, Service Manual

Page 1: ...SERVICE MANUAL VALOR 4000 VALOR 2000 Ohaus Corporation 7 Campus Drive Suite 310 Parsippany NJ 07054 973 377 9000...

Page 2: ...me 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 to...

Page 3: ......

Page 4: ...Navigation 1 8 1 8 Legal For Trade 1 9 1 8 1 Settings 1 9 1 8 2 Verification 1 9 1 8 3 Sealing 1 9 CHAPTER 2 TROUBLESHOOTING 2 1 Troubleshooting 2 1 2 2 Diagnostic Guide 2 1 2 2 1 Diagnosis 2 1 2 2 2...

Page 5: ...Setup and Calibration A 2 Appendix B SERVICE CALIBRATION B 1 Service Menu Structure B 1 B 2 Entering the Service Menu B 1 B 3 Ramp Menu B 2 B 4 Service Linearity Calibration B 2 B 5 Service Span Cali...

Page 6: ...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 Back Display Valor 2000 1 7 1 5 Menu Structor Valor 2000 1 8 1 6...

Page 7: ...rviceable components Appendix A Standard Calibration Explains procedures for Standard Calibration performed prior to using a scale and after service Appendix B Service Calibration Describes the Servic...

Page 8: ...conds 0 5 0 5 0 5 0 5 Operating Temperature 10 C to 40 C 10 C to 40 C 10 C to 40 C 10 C to 40 C Storage Temperature 20 C to 55 C 20 C to 55 C 20 C to 55 C 20 C to 55 C Pan Size 190 x 242 mm 190 x 242...

Page 9: ...ough available settings Short Press Initiates an application mode specific response Long Press Selects active Mode Short Press in Menu returns to previous settings Short Press Enter clear a Tare value...

Page 10: ...battery charge indicator will remain lit The scale can be operated during charging and the battery is protected against overcharging For maximum operating time the battery should be charged at room t...

Page 11: ...Filter AZT Light Sleep A Off End Reset Percnt Check End kg g oz lb lb oz End Reset L Cal L Setup L Read L Mode L Unit End 1 6 4 Menu Navigation Press and hold Menu until mMeNU Menu is displayed When...

Page 12: ...000 Button Functions Short Press1 when on Sets display to zero Long Press2 when off Turns scale on when on Turns the scale off Short Press in Menu Selects accepts displayed setting Short Press Enter c...

Page 13: ...e battery charge indicator will remain lit The scale can be operated during charging and the battery is protected against overcharging For maximum operating time the battery should be charged at room...

Page 14: ...escription of the menus and how to access them Cal Figure 1 5 Menu structure 1 7 4 Menu Navigation To enter the calibration menu press and hold the Cal button for 5 seconds SpaN will then be displayed...

Page 15: ...rt these pins a slotted screwdriver may be used while powering the scale ON The scale will perform the start up procedure and then the display will show the current status lft OFF LFT OFF unlocked or...

Page 16: ...d with the most common cause first If the first remedy does not fix the problem proceed to the next remedy Before attempting to repair the balance read all chapters of this manual to be familiar with...

Page 17: ...t The reading should meet the Load Cell specifications The Load Cell output should be very close to linear over its capacity range NOTE The following steps involve power applied to the scale Load Cell...

Page 18: ...Zero Load 50 and full scale capacities See Table 2 3 for typical readings Figure 2 1 Top view of main PCB NOTE Table 2 3 indicates typical readings Actual values can vary but should remain linear thro...

Page 19: ...3 Using a DVM measure the excitation voltage EXE and EXE in Figure 2 1 The reading should be 4 6 4 7 volts dc This is the excitation voltage for the Load Cell and is regulated If the voltage is lower...

Page 20: ...alue 6 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 resulting readings are unstable the Main PC Boar...

Page 21: ...e reference weight Err 3 0 Cal Incorrect calibration weight See section 2 4 for correct weights Err 8 1 Load Power on zero range exceeded Clear pan Err 8 2 _Load_ Power on zero under range Install pan...

Page 22: ...tronics to stabilize 3 1 1 Preventive Maintenance Checklist The scale should be inspected and checked regularly as follows 1 Remove the Pan and Sub Pan to inspect and clean the area beneath the Pan 2...

Page 23: ...ake away the battery cover 4 Disconnect the battery 5 Remove the battery 6 Remove the 2 screws of pan and take away the pan 7 Remove the LFT cover screws 8 Take away the LFT cover 9 Remove the 5 screw...

Page 24: ...le connecting the Main PCB to the scale s power system See Figure 3 2 2 Remove the four screws that secure the PCB to the bottom housing 3 Remove the white glue on the PCB that secures the load cell c...

Page 25: ...everage Allen wrench Note There is a shim between the Load Cell Frame and the Load Cell Be careful not to lose it Applies to AMI 3 5kg and all Zemic load cells 2 Turn the scale over and remove the bol...

Page 26: ...res test masses equal to the scale s capacity See Table 3 2 There are four Overload Stop Bolts See Figure 3 5 Adjust the Overload Stops per Table 3 2 1 Adjust the Overload Stop Bolt so that the gap be...

Page 27: ...ERLOAD STOP GAP SETTINGS Model Max Capacity Overload Stop Gap Scale Load Cell A B mm C D mm V41xWE1501T V22xWE1501T 1 5kg 3kg 1 1 0 9 V41xWE3T V22xWE3T 3kg 5kg 1 2 0 8 V41xWE6T V22xWE6T 6kg 10kg 1 0 7...

Page 28: ...s free of the battery posts and lift out the battery 3 Position the replacement battery in the compartment on an angle sufficient to access the battery posts Make sure that the red harness connect to...

Page 29: ...asses 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 Model Weight...

Page 30: ...ification 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 31: ...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 Used...

Page 32: ...ge 6 Mean Reading 1 Reading 2 Reading 3 Reading 4 Reading 5 7 Reading 6 Reading 7 Reading 8 Reading 9 Reading 10 10 Mean ________ 6 Calculate the Delta for each reading and record in the work sheet De...

Page 33: ...ff 3 Place the test mass on the Scale record the weight and remove 4 Place Load 2 on the Scale and press ON Zero Off 5 Place the test mass on the Scale record the weight and remove 6 Place Load 3 on t...

Page 34: ...test weight in the center of the Weighing Pan 2 Tare the balance 3 Move the weight to point A and record the reading 4 Move the weight to point B and record the reading 5 Move the weight to point C an...

Page 35: ...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 this manual...

Page 36: ...CHAPTER 5 PARTS LISTS DIAGRAMS Ohaus Corporation www ohaus com 5 2 Valor 2000 4000 Series Service Manual 5 1 Valor 4000PW SCALES PARTS Figure 5 1 Valor 4000PW Scales Parts...

Page 37: ...2198198 SP Lead Acid Battery 6V 5AH 10 30035597 SP Cover Batt V22 V41 11 30035606 SP Feet Kit R21 R31 V71 V22 V41 12 30035634 SP Mech 4 Key Module V41 13 30028582 Function Label Front EN V41 13 300356...

Page 38: ...CHAPTER 5 PARTS LISTS DIAGRAMS Ohaus Corporation www ohaus com 5 4 Valor 2000 4000 Series Service Manual 5 2 Valor 4000XW SCALES PARTS Figure 5 2 Valor 4000XW Scales Parts...

Page 39: ...ery Cover V22PW V41P X W 11 30035606 SP Feet Kit R21 R31 V71 V22 V41 12 30035634 SP Mech 4 Key Module V41P X W 13 30028582 Function Label Front EN V41P X W 30035621 Function Label Front JP V41P X W 30...

Page 40: ...CHAPTER 5 PARTS LISTS DIAGRAMS Ohaus Corporation www ohaus com 5 6 Valor 2000 4000 Series Service Manual 5 3 Valor 2000PW SCALES PARTS Figure 5 3 Valor 2000PW Scales Parts...

Page 41: ...SP Lead Acid Battery 6V 5AH 10 30035597 SP Cover Batt V22 V41 11 30035606 SP Feet Kit R21 R31 V71 V22 V41 12 30035635 SP Mech 2 Key Module V22 13 30035617 Function Label Front V22PW Chinese 30043179...

Page 42: ...CHAPTER 5 PARTS LISTS DIAGRAMS Ohaus Corporation www ohaus com 5 8 Valor 2000 4000 Series Service Manual 5 4 Valor 2000XW SCALES PARTS Figure 5 3 Valor 2000XW Scales Parts...

Page 43: ...10 30035597 SP Cover Batt V22 V41 11 30035606 SP Feet Kit R21 R31 V71 V22 V41 12 30035635 SP Mech 2 Key Module V22PW 13 30043179 Function Label Front EN V22 30035628 Function Label Front JP V22 30035...

Page 44: ...stabilizing to room temperature 3 To abort calibration press Exit key or turn the scale off anytime during the calibration process 4 Before performing the calibration be sure to have the appropriate...

Page 45: ...ress Yes to accept SpaN will then be shown Press Yes to begin the span calibration 0 kg will be displayed SpaN 0 3 Press Yes to accept C will be displayed while zero reading is stored Next the display...

Page 46: ...Span calibrations no pre set limits The service menu is not accessible if LFT mode is enabled CAUTION Be careful not to touch the scale or the surface it rests on while calibration is in progress as i...

Page 47: ...nts cannot be altered by the user during the calibration procedure When LIN appears press YES to accept the Service Linearity Calibration menu or No to advance to the Ramp menu item LIN 0 flashes The...

Page 48: ...display C flashes while the zero point is established C Service Span Calibration point flashes The example shows the value for a Scale Capacity of 3 kg Place the specified calibration weight on the p...

Page 49: ...lb oz Press YES to set the displayed unit or NO to advance to the next unit Each unit can be set to either ON or OFF ON enabled OFF disabled Note For Valor 2000 when changing unit first set the curren...