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CHAPTER 3 - MAINTENANCE PROCEDURES

Valor 1000 Series Service Manual

14

Ohaus Corporation www.ohaus.com

Figure 3-4 Main PCB: Approved Model.

4. Reverse the disassembly procedure to assemble the Load cell PCB.

3.4 Removing/Replacing the Rear Display PCB

1. Disconnect the Cable connecting the Main PCB to Rear Display PCB. (See Figure 3-1.)

2. Remove 2 screws indicated in Figure 3-5, take out the display PCB

3. Position the replacement PCB, insert and tighten the screws, screws should be fixed in the slot

of the plastic ribs.

4. Connect the Rear Display PCB Cable to the Main PCB.

Figure 3-5 Rear Display PCB.

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Содержание Valor 1000

Страница 1: ...ValorTM 1000 Series Service Manual...

Страница 2: ......

Страница 3: ...cking Load Cells for Trouble 9 3 MAINTENANCE REPAIR PROCEDURES 11 3 1 Preventive Maintenance 11 3 2 Opening the Scale 12 3 3 Removing Replacing the Main PCB 13 3 4 Removing Replacing the Rear Display...

Страница 4: ...apter 4 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 1...

Страница 5: ...fications are not met TABLE 1 1 SPECIFICATIONS NON APPROVED MODELS Model V12P3 V12P6 V12P15 V12P30 Capacity Readability Max x d non approved 6 lb x 0 001 lb 3 kg x 0 0005 kg 3 000 g x 0 5 g 96 oz x 0...

Страница 6: ...2 kg 5 000 g x 2 g 160 oz x 0 1 oz 20 lb x 0 01 lb 10 kg x 0 005 kg 10 000 g x 5 g 320 oz x 0 2 oz 50 lb x 0 02 lb 20 kg x 0 01 kg 20 000 g x 10 g 800 oz x 0 5 oz Approved Resolution 1 2 000 1 2 500 1...

Страница 7: ...Weighing Tare Range To capacity by subtraction Stabilization Time 2 seconds Power requirements 4 x Alkaline battery included AC adapter optional or rechargeable battery optional Calibration Digital wi...

Страница 8: ...off Turns the scale on Short Press when on Sets display to zero Long Press when on Turns the scale off Press in Menu Confirm Enter Short Press Enters clears a Tare value Long Press Enters User Menu Pr...

Страница 9: ...quirements are met As the requirements vary by jurisdiction the purchaser is advised to contact their local weights and measures office for instructions about putting the scale into service 1 7 1 Sett...

Страница 10: ...nual 7 Ohaus Corporation www ohaus com After the scale has been verified it must be sealed by the weights and measures official to prevent undetected access to the legally controlled settings Refer to...

Страница 11: ...ptom then follow the suggested remedies in order Note Allow the scale to warm up for approximately five minutes after stabilizing to room temperature 2 2 Diagnostic Guide Diagnostic Guide designed to...

Страница 12: ...h of the sides of the Load Cell on a flat surface to see if it rests flat and even A gap indicates a bent or twisted Load Cell A Load Cell that is even slightly bent or corroded should be replaced Exa...

Страница 13: ...ange Clear pan Err 8 2 The Power On weight on the platform is below the zero range Check if pan is missing Err 8 3 Over load weight exceeds rated capacity Remove weight from pan Err 8 4 Under load pan...

Страница 14: ...perature stabilization allow another 20 minutes after turning the scale on for the scale electronics to stabilize Preventive Maintenance Checklist The scale should be inspected and checked regularly a...

Страница 15: ...power cord or remove the battery before you begin 1 Lift off the Weighing Pan from the Pan Support 2 Remove the Pan Support 3 Turn the scale over Remove the five screws on the bottom and one screw und...

Страница 16: ...CB to the scale s power system for the approved model please disconnect the cable of rear display PCB See Figure 3 3 and Figure 3 4 2 Remove the four screws that secure each PCB to the Top Housing 3 I...

Страница 17: ...l PCB 3 4 Removing Replacing the Rear Display PCB 1 Disconnect the Cable connecting the Main PCB to Rear Display PCB See Figure 3 1 2 Remove 2 screws indicated in Figure 3 5 take out the display PCB 3...

Страница 18: ...ully cut off the hot melt glue Unsolder the cable leads connecting the Load Cell to the PCB See Figure 3 3 or Figure3 4 2 Remove the bolts that hold the Load Cell Frame to the Load Cell Use a high lev...

Страница 19: ...the bolts The bolts are tightened to about 10 Nm torque 8 Solder the cable leads connecting the Load Cell to the PCB See the color code of load cell in table 3 1 TABLE 3 1 COLOR CODE FOR LOAD CELL WI...

Страница 20: ...stop screw 3 7 Replacing the Port PCB 1 Remove cable from main PCB 2 Remove 3 screws indicated in Figure 3 9 Figure 3 9 Port PCB 3 Unsolder the leads connecting the battery metal sheet See Figure 3 1...

Страница 21: ...poration www ohaus com 3 8 Replacing the Function Label 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...

Страница 22: ...000 2000 3000 V12P6X 1500 3000 4500 6000 V12P15X 3000 4000 9000 11000 15000 V12P30X 6000 8000 15000 22000 30000 V12P2X 500 1000 2000 V12P5X 1000 1500 2500 4000 5000 V12P10X 2500 5000 7500 10000 V12P20...

Страница 23: ...t meet the precision specification Inspect and correct the following areas Check for mechanical obstructions Any foreign object touching any part of the moving assemblies will cause a balance to fail...

Страница 24: ...worksheet Table 4 2 with the ten 10 readings TABLE 4 2 REPEATABILITY WORKSHEET n Reading Delta Reading Mean Delta x Delta 1 2 3 4 5 6 7 8 9 10 n number of Reading Mean Sum of readings 10 Delta Readin...

Страница 25: ...before the Linearity Test may be performed TABLE 4 3 LINEARITY TEST MASSES Capacity g 3000 x 5g 6000 x 1g 15000 x 2g 30000 x 5g Reference Wt 1000 1500 4000 8000 Load 1 500 1500 3000 6000 Load 2 1500...

Страница 26: ...e whether displayed weight values are affected by moving the sample to different areas of the Pan 1 Place 1 3 of the scale s capacity in the center of the Pan 2 Note the reading 3 Move the mass halfwa...

Страница 27: ...e 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 ACROSS 9 If the reading at point C is negat...

Страница 28: ...d 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 If fu...

Страница 29: ...CHAPTER 5 PARTS LISTS DIAGRAMS Valor 1000 Series Service Manual 26 Ohaus Corporation www ohaus com 5 PARTS LISTS DIAGRAMS 5 1 Non Approved Models Spare Parts...

Страница 30: ...Housing Top V12P 6 30551943 Housing Bottom V12P 7 30551944 Display Front V12P 8 30556415 Battery Cover Dry Battery V12P For model of V12P 30556416 Battery Cover Rechargeable battery V12P For model of...

Страница 31: ...CHAPTER 5 PARTS LISTS DIAGRAMS Valor 1000 Series Service Manual 28 Ohaus Corporation www ohaus com 5 2 Approved Models Spare Parts...

Страница 32: ...er Dry Battery V12P 9 30556417 Feet V12P 10 30556418 Loadcell 6kg V12P For model of V12P3T 30556428 Loadcell 10kg V12P For model of V12P6T 30556429 Loadcell 20kg V12P For model of V12P15T 30556430 Loa...

Страница 33: ...ressing On Off button and change the function by pressing Tare Button 4 Exit service menu with End A 1 Service Menu Structure Function Display Remark Ramp ramMp Show Ramp value Lin LIN Perform the Ser...

Страница 34: ...is wrong and the scale did not complete calibration To exit calibration at any point short press Tare Menu LIN LIN Initiates a linearity calibration procedure zero mid point and span When performing a...

Страница 35: ...ademark of Ohaus Corporation 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...

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