OHAUS Defender 6000 Series Service Manual
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Summary of Contents for OHAUS Defender 6000 Series
- Page 1 Presented By Dallas Ft Worth Austin Houston NicolScales.com 800.225.8181 Contact Us Nicol Scales & Measurement is an ISO Accredited Calibration Company that has provided calibration, repair and sales of all types of weighing and measurement products since 1931.
- Page 2 Defender 6000 Series Base Service Manual...
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Page 3: Table Of Contents
4.5.3 Full Load Test ..........................20 CHAPTER 5 PARTS IDENTIFICATION ......................21 Defender 6000 series Base: R, S Base ....................21 Defender 6000 series Base: L Base ....................22 Defender 6000 series Base: V Base ....................23 APPENDIX A. GLOSSARY ..........................24 Ohaus Corporation www.ohaus.com... -
Page 4: Chapter 1 Introduction
CHAPTER 1 INTRODUCTION Introduction This service manual contains the information needed for diagnosis and repair of Ohaus Defender series Bases. The contents of this manual are contained in five chapters: Chapter 1 Introduction – Contains information regarding service facilities, tools and test equipment, test masses, specifications, service strategy, and the mechanical and electronic operation of the Base. -
Page 5: Safety Precaution
Away from magnetic fields such as motors or large transformers. Free of vibrations such as fork lift trucks close by, large motors, etc. Stable and level work surface. Not exposed to direct sunlight or radiating heat sources. Ohaus Corporation www.ohaus.com Defender™ Series Bases Service Manual... -
Page 6: Tools And Test Equipment Required
7. A calibrated Torque Wrench N.m. – Ft/Lbs Test Masses Required The masses required to test the Ohaus Defender series Bases when connected to an Indicator must meet the requirements of ASTM Class or OIML. Mass values 3kg to 600kg, depending on the Base model. The full scale rated capacity of the Base should be used for Span calibration. -
Page 7: Specifications
Operating temperature: -10º C to +40 º C (14 ° F to 104 ° F) Relative humidity: 10% to 90% relative humidity, non-condensing Altitude: Up to 2,000m Note: Not all models may be available in your area. Check with your local OHAUS representative. TABLE 1-1. SPECIFICATIONS FOR DEFENDER SERIES BASES MODEL... - Page 8 6 kg / 13.2 lb 7.5 kg / 16.5 lb 16 kg / 35.3 lb Shipping Weight 7 kg / 15.4 lb 8.5 kg / 18.7 lb 18 kg / 39.7 lb Ohaus Corporation www.ohaus.com Defender™ Series Bases Service Manual...
- Page 9 Load Cell 5-15V DC/AC Excitation Load Cell 2mV/V Protection Load Cell IP69K Protection 6 kg 7.5 kg 16 kg Net Weight 37 kg Shipping 7 kg 8.5 kg 18 kg 41 kg Weight Ohaus Corporation www.ohaus.com Defender™ Series Bases Service Manual...
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Page 10: How Load Cells Operate
The difference in the output signal before and after the mass was placed on the platform is measured, interpreted and displayed. Ohaus Corporation www.ohaus.com Defender™ Series Bases Service Manual... -
Page 11: Load Cell Connection
Load Cell Connection Type1. For models i-D3K1S, i-D6K1S, i-D15K1R, i-D30K1R, i-D60K1L bases FUNCTION WIRE COLOR + Excitation Blue - Excitation Black + Signal White - Signal + Sense Green - Sense Grey Shield Yellow Ohaus Corporation www.ohaus.com Defender™ Series Bases Service Manual... - Page 12 Type2. For models i-D150K1L, i-D300K1VZH, i-D600K1VZH bases FUNCTION WIRE COLOR + Excitation Green - Excitation Black + Signal White - Signal + Sense Light Yellow - Sense Blue Shield Deep Yellow Ohaus Corporation www.ohaus.com Defender™ Series Bases Service Manual...
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Page 13: Chapter 2 Troubleshooting
Perform an Output Voltage Test: Measure the no load, 50% load and full load output. The reading should meet the Load Cell specifications. (See Chapter 4.) – The Load Cell output should be very close to linear over its capacity range. Ohaus Corporation www.ohaus.com Defender™ Series Bases Service Manual... -
Page 14: Chapter 3 Maintenance And Repair Procedures
CHAPTER 3 MAINTENANCE AND REPAIR PROCEDURES Preventive Maintenance Ohaus bases should be carefully handled, stored in a clean, dry area, and cleaned periodically. Follow these precautionary steps: – When a base has had chemicals or liquids spilled on it, all exterior surfaces should be cleaned as soon as possible with warm water on a damp cloth. - Page 15 4. Remove the Top Load Cell Mounting Bolts, washers and spacer. The Load Cell assembly can now be removed from the Top Frame. 5. Remove the Mounting Block Bolts from the Load Cell. 6. Install the new Load Cell following steps 1 through 5 in reverse order. Ohaus Corporation www.ohaus.com Defender™ Series Bases Service Manual...
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Page 16: Overload Stop Adjustment
10" x 10" i-D5K1S i-D6K1S 12.5 i-D12K1R i-D15K1R 305 x 305 12'' x 12'' i-D25K1R i-D30K1R i-D50K1L 400 x 500 i-D60K1L 15.7" x i-D125K1L 19.6" i-D150K1L 600 x 800 i-D300K1V 23.6" x i-D600K1V 31.5" Ohaus Corporation www.ohaus.com Defender™ Series Bases Service Manual... -
Page 17: Chapter 4 Testing
The following tests require a Digital Multimeter, an Indicator and hand tools. The Digital DC Voltmeter should have a reading range from 1 mV to 50 V full-scale. It should be capable of reading differences of one micro- volt per increment. The indicator can be either the Ohaus Defender 3000 series, or an equivalent commercial indicator. -
Page 18: Calibration With An External Indicator
Indicator to read the load in the units required, for example, kilograms or grams. (Consult the Indicator instruction manual for calibration procedures.) For calibration mass weights, see Table 1-1, in Chapter 1. 3. Check that the Indicator is reading correctly over a range of values. Ohaus Corporation www.ohaus.com Defender™ Series Bases Service Manual... -
Page 19: Consistency Check
1. Using a voltmeter, measure and record the excitation voltage supplied by the Indicator. Most Ohaus indicators supply 5 volts dc for the excitation voltage. 2. Using an mV meter, measure and record the signal voltage with no load on the base. -
Page 20: Off Center Load (Shift) Test
Tolerance ±4d for maintenance (±2d for the new product), For Base readability, see Table 4-3.) Figure 4-1. Positions A, B, C and D are centered at each quarter of the base platform. Ohaus Corporation www.ohaus.com Defender™ Series Bases Service Manual... -
Page 21: Adjusting Off Center Load
Note: It is not recommended that you try to adjust more than –5 counts if the beam has been filed already. If the beam has not been filed previously, you can adjust –10 counts. Remember, when filing you are weakening the beam. File a little at a time. Ohaus Corporation www.ohaus.com Defender™ Series Bases Service Manual... -
Page 22: Full Load Test
United States, call toll-free 1-800-526-0659 between 8:00 AM and 5:00 PM Eastern Standard Time. An Ohaus Product Service Specialist will be available to assist you. Outside the USA, please visit our website www.ohaus.com to locate the Ohaus office nearest you. -
Page 23: Chapter 5 Parts Identification
This section of the manual contains exploded views for the Defender 6000 Bases. The exploded view drawings are designed to identify the parts which can be serviced in the field. Defender 6000 series Base: R, S Base Figure 5-1. Defender 6000 series Base: R, S Base Drawing Item... -
Page 24: Defender 6000 Series Base: L Base
5.2 Defender 6000 series Base: L Base Figure 5-2. Defender 6000 series Base: L Base Drawing Item Description Comments Pan 400x500 SUS316 i-DT61 Loadcell 1-PW15AHC3/100KG- i-D50K1L, i-D60K1L, i- D60K1LZH Loadcell SSH-200kg 2.5m i-D150K1L Loadcell SSH-300kg 2.5m i-D150K1LZH Level Kit D52 SST Base... -
Page 25: Defender 6000 Series Base: V Base
Box Complete V D52 NOTE: 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 nearest office, visit www.Ohaus.com. Ohaus Corporation www.ohaus.com... -
Page 26: Appendix A. Glossary
V output over full range, they will quote the milli-Volt output per volt of excitation, or in its short form, mv/V. Most Ohaus Indicators provide an excitation voltage of 5 Volts dc. - Page 27 OHAUS Corporation 7 Campus Drive Suite 310 Parsippany, NJ 07054 USA Tel: +1 973 377 9000 Fax: +1 973 944 7177 With offices worldwide www.ohaus.com *30655626* 30655626A © 2021 OHAUS Corporation, all rights reserved...
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