OHAUS Defender D30BR Service Manual Download Page 27 | Manualshive

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CHAPTER 5 PARTS LISTS & DIAGRAMS

5.1 DEFENDER B & V SERIES BASES: PARTS

TABLE 5-1. DEFENDER B & V SERIES BASES: PARTS

Drawing Item

Description

1 Pan

2 Hardware

Kit

3

Rubber Load Pads, (set of 6)

6 Load

Cell

8 Level

Kit

9 Foot

(1)

When replacement parts are needed, refer to the spare part list for the model you are servicing.
Parts lists are available from your local Ohaus office. To locate your local office, visit
Ohaus.com.

Defender™ B & V Series Service Manual

5-3

Ohaus Corporation www.ohaus.com

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Summary of Contents for Defender D30BR

Page 1: ...SERVICE MANUAL Defender Bases Dry use B Series Wet use V Series Ohaus Corporation 7 Campus Drive Suite 310 Parsippany NJ 07054 973 377 9000...

Page 2: ......

Page 3: ...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 Material in this man...

Page 4: ......

Page 5: ...eplacing the Load Cell 3 1 3 3 Overload Stop Adjustments 3 2 CHAPTER 4 TESTING 4 1 Testing 4 1 4 2 Load Cell Resistance Checks 4 1 4 3 Calibration with an External Indicator 4 1 4 4 Consistency Check...

Page 6: ...output 1 5 3 1 Four Mounting Bolts that secure the Top Frame to the Load Cell 3 1 3 2 Four Mounting Bolts that secure the Bottom Frame to the Load Cell 3 2 3 2 Overload Stops 3 2 4 1 Positions A B C...

Page 7: ...preventive maintenance procedures and disassembly repair and replacement procedures Chapter 4 Testing Contains guides for operational and performance tests and adjustments Chapter 5 Drawings and Parts...

Page 8: ...f Load Cells with connecting cable and hardware Each base contains the following basic replaceable assemblies Platform Load Cell with Connecting Cable and Down Stop and mounting hardware There is an e...

Page 9: ...inum single point C3 MODEL V Series D30VR D60VR D60VL D150VL D150VX D300VX Construction 304 stainless steel pan and frame non slip rubber leveling feet Load Cell Protection Accuracy Class IP67 stainle...

Page 10: ...1 1 Typical Strain Gauge Load Cell Internal PCB The strain gauges are wired into a Wheatstone Bridge Circuit See Figure 1 2 Strain Gauge Strain Gauge Force Strain Gauge Strain Gauge Printed Circuit Bo...

Page 11: ...wer source in the Indicator and sends back a low voltage milli volt mV relative to the force applied The Load Cell signal is read by the Indicator which converts it to a numeric value and shows it vis...

Page 12: ...CHAPTER 1 INTRODUCTION Ohaus Corporation www ohaus com 1 6 Defender B V Series Service Manual...

Page 13: ...restrict movement causing improper operation of the Base If the Overload Stops are improperly set adjust them See Section 3 3 Check the metal surfaces of the Platform All surfaces should be parallel...

Page 14: ...CHAPTER 2 DIAGNOSTIC GUIDE Ohaus Corporation www ohaus com 2 2 Defender B V Series Service Manual...

Page 15: ...e base 2 Remove the Platform to inspect and clean the area beneath the Platform CAUTION DO NOT USE CHEMICAL CLEANERS OR SOLVENTS OF ANY TYPE SOME CLEANERS ARE ABRASIVE AND MAY AFFECT THE BASE S FINISH...

Page 16: ...The Overload Stop gaps must be checked and reset if the Load Cell is replaced 1 Remove the Platform and loosen the Jam Nuts first on the four Overload Stops on the top side of the Frame then on the b...

Page 17: ...y Overload Stop Corner Overload Stop Center D30BR 30kg 0 6 35 D60BR 60kg 0 8 0 5 D60BL 60kg 2 8 0 7 D150BL 150kg 2 2 0 4 D150BX 150kg 2 5 0 4 D300BX 300kg 4 0 5 D30VR 30kg 0 6 35 D60VR 60kg 0 8 0 5 D6...

Page 18: ...CHAPTER 3 MAINTENANCE AND REPAIR PROCEDURES Ohaus Corporation www ohaus com 3 4 Defender B V Series Service Manual...

Page 19: ...the four resistance elements which make up the Wheatstone Bridge there are commonly one or two resistors in the excitation lines The resistance across the excitation wires is usually the highest resi...

Page 20: ...nd record the signal voltage at the loads shown in Table 4 2 4 Compare the measured output readings with the theoretical values from the Load Cell data See Table 4 2 TABLE 4 2 LOAD CELL OUTPUT READING...

Page 21: ...l sections of the Base weigh within specified tolerance If the Base does not pass the Off Center Load Test verify that the Overload Stops are properly set See Section 3 1 If the Off Center Load Test c...

Page 22: ...eight 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 ACROSS 9 If t...

Page 23: ...est the Base s full capacity according to the Specification Tables 1 1 through 1 6 The Base must meet all specifications as listed 2 If the Base fails the Full Load Test check and set the Overload Sto...

Page 24: ...CHAPTER 4 TESTING Ohaus Corporation www ohaus com 4 6 Defender B V Series Service Manual...

Page 25: ...d NOTE In all cases where a part is replaced the base must be thoroughly checked after the replacement is made The base MUST meet the parameters of all applicable specifications in this manual If furt...

Page 26: ...CHAPTER 5 PARTS LISTS DIAGRAMS 5 1 DEFENDER B V SERIES BASES PARTS Figure 5 1 Defender B V Series Bases Parts Ohaus Corporation www ohaus com 5 2 Defender B V Series Service Manual...

Page 27: ...2 Hardware Kit 3 Rubber Load Pads set of 6 6 Load Cell 8 Level Kit 9 Foot 1 When replacement parts are needed refer to the spare part list for the model you are servicing Parts lists are available fro...

Page 28: ...CHAPTER 5 PARTS LISTS DIAGRAMS Ohaus Corporation www ohaus com 5 4 Defender B V Series Service Manual...

Page 29: ...Over the full rated capacity of the load cell the mV output will change The amount by which it changes depends upon the resistance change in the cell and on the excitation voltage applied Since the l...

Page 30: ...APPENDIX A GLOSSARY Ohaus Corporation www ohaus com A 2 Defender B V Series Service Manual...

Page 31: ......

Page 32: ...80252594 P N 80252594 A SERVICE MANUAL DEFENDER B V SERIES BASES...

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