Related Manuals for OHAUS 3000 Series T31XW
Summary of Contents for OHAUS 3000 Series T31XW
- Page 1 SERVICE MANUAL 3000 Series T31 Indicators T31P T31XW Ohaus Corporation 19A Chapin Road, P.O. Box 2033, Pine Brook, NJ 07058-2033 (973) 377-9000...
- Page 3 T31 Indicators: T31P & T31XW 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 this material. Reproduction of this material is strictly prohibited.
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Page 5: Table Of Contents
Performance Tests Using a Scale Base ..............4-1 4.3.1 Increasing/Decreasing Load Test...............4-2 4.3.2 Overload/Underload Test ...................4-2 Performance Tests Using a Load Cell Simulator............4-2 Calibration Retention ....................4-2 RS232 Interface Test/Print Test ................4.2 Ohaus Corporation www.ohaus.com 3000 Series T31 Indicators Service Manual... - Page 6 TABLE OF CONTENTS CHAPTER 5 PARTS LISTS & DIAGRAMS Page No. 3000 Series T31P Indicator: Housing & Internal Parts ..........5-2 3000 Series T31XW Indicator: Housing & Internal Parts...........5-4 APPENDIX A SETUP & CALIBRATION VALUES Appendix A. Setup & Calibration Values................A-1...
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Page 7: Chapter 1 Getting Started
INTRODUCTION This service manual contains the information needed to perform routine maintenance and service on the Ohaus T31 Indicators. The contents of this manual are contained in five chapters: Chapter 1 Getting Started – Contains information regarding service facilities, tools and test equipment, measuring masses, specifications, hardware setup or disassembly, operating the Indicator, scale setup and calibration, and configuring the Indicator’s communication and Legal-... -
Page 8: Tools And Test Equipment Required
In order to properly service the Indicator, certain special tools and test items are required in addition to standard electronic tool kits. These items are listed as follows: 1.3.1 Special Tools and Test Equipment List 1. Ohaus Scale Base. 2. Load Cell Simulator optional. 3. Computer with RS232 Interface for testing the RS232 communications. -
Page 9: Specifications
–10°C to 40°C / /14°F to 104°F 9 – 12 VDC, 0.5A, AC Adapter Internal rechargeable, Power Sealed Lead-Acid Battery (100-hour typical life) (T31P) 100-240 VAC / 50-60 Hz, Internal Power Supply (T31XW) 3000 Series T31 Indicator Service Manual Ohaus Corporation www.ohaus.com... -
Page 10: Hardware Setup Or Disassembly
For load cells with an extra ground shield wire, connect the shield to the center position (GND). Connection J5-1 +Excitation J5-2 +Sense J5-3 +Signal J5-4 +EXC +SIG -SIG -EXC J5-5 –Signal +SENS -SENS J5-6 –Sense J5-7 –Excitation Figure 1-2. Load Cell wiring. Figure 1-3. Open/shorted jumpers. Ohaus Corporation www.ohaus.com 3000 Series T31 Indicator Service Manual... -
Page 11: Rs232 Interface
RS232 cable. The RS232 pin configuration for the T31P is illustrated in Figure 1-5, below. Connection 6-9 N/C Figure 1-5. RS232 Pins. To adjust RS232 settings, see Section 1.9, page 1-11, or the Instruction Manual packed with the Indicator. 3000 Series T31 Indicator Service Manual Ohaus Corporation www.ohaus.com... -
Page 12: Operation
Stability symbol Capacity label window 7-segment, 6-digit LCD display Kilogram, Pound, & Ounce symbols Center of Zero, Battery, PCs, TARE indicators (Battery only Control Buttons on T31P.) Figure 1-6. T31 Display. Ohaus Corporation www.ohaus.com 3000 Series T31 Indicator Service Manual... -
Page 13: Power On
To turn the indicator on, press ON/ZERO/Off (short press). The indicator performs a display test, momentarily displays software version, and then enters the active weighing mode. 1.7.2 Power OFF To turn the power off, press ON/ZERO/Off (long press). The indicator shuts down. 3000 Series T31 Indicator Service Manual Ohaus Corporation www.ohaus.com... -
Page 14: Menu Setup
Back Moves backwards through the upper and middle level menus. Backs out of a list of selectable items to the previous middle level menu. – Exit Exits from menu directly to the active weighing mode. Table 1-3. T31 MENU STRUCTURE Ohaus Corporation www.ohaus.com 3000 Series T31 Indicator Service Manual... -
Page 15: Scale Setup & Calibration
GEO appears again. Press No to exit the GEO menu. End appears. Press Yes to return to the CAL menu. Press No continuously until E.n.d appears. Press Yes to return to weighing mode. 3000 Series T31 Indicator Service Manual Ohaus Corporation www.ohaus.com... -
Page 16: Span Calibration
Yes. The display shows --C-- while the full calibration point is established. After successful calibration, the scale exits to the active weighing mode and displays the actual weight value. Ohaus Corporation www.ohaus.com 1-10 3000 Series T31 Indicator Service Manual... -
Page 17: Rs232 Interface Connection
Press No to advance, Back to regress, and Yes to accept a setting. After you press Yes, INtEr appears again. Press No twice, then Yes when End appears, No when P.r.i.n.t appears, No again, and Yes when End appears again to exit menu mode. 3000 Series T31 Indicator Service Manual 1-11 Ohaus Corporation www.ohaus.com... -
Page 18: Interface Commands
Units, up to five characters. Stability, “?” character is printed if not stable, blank if stable. Legend, up to 3 characters: G = gross weight, NET = net weight, T = tare Ohaus Corporation www.ohaus.com 1-12 3000 Series T31 Indicator Service Manual... -
Page 19: Legal For Trade (Lft)
The weights and measures official may apply a wire or paper security seal as shown below. Figure 1-7. T31P Wire Seal. Figure 1-8. T31P Paper Seal. SEAL SEAL Figure 1-9. T31XW Wire Seal Figure 1-10. T31XW Paper Seal 3000 Series T31 Indicator Service Manual 1-13 Ohaus Corporation www.ohaus.com... - Page 20 GETTING STARTED CHAPTER 1 Ohaus Corporation www.ohaus.com 1-14 3000 Series T31 Indicator Service Manual...
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Page 21: Chapter 2 Troubleshooting
See Chapter 3, Maintenance Procedures, for board replacement and testing. If the Indicator shows no sign of physical damage, continue with procedures. See chart below for visual checking procedures. Figure 2-1. Visual Checking Procedures. 3000 Series T31 Indicators Service Manual Ohaus Corporation www.ohaus.com... -
Page 22: Diagnostic Guide
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 manual, contact Ohaus Corporation for further information. Ohaus Corporation www.ohaus.com... - Page 23 Error 8.3 Weight reading exceeds Reduce load on scale. Overload limit. Error 8.4 Weight reading below Underload Add load to scale. Recalibrate scale. limit. Error 9.0 Internal fault. Cycle power. Replace PCB. 3000 Series T31 Indicators Service Manual Ohaus Corporation www.ohaus.com...
- Page 24 In Pieces mode, the average You may continue to weigh, but results piece weight of the parts is may not be accurate, because average small (warning). piece weight is smaller than can be accurately counted. Ohaus Corporation www.ohaus.com 3000 Series T31 Indicators Service Manual...
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Page 25: Chapter 3 Maintenance Procedures
CHAPTER 3 MAINTENANCE PROCEDURES PREVENTIVE MAINTENANCE Ohaus Indicators are precision instruments and should be carefully handled, stored in a clean, dry, dust-free area, and cleaned periodically. Follow these precautionary steps: – When an Indicator 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 26: Printed Circuit Board (Pcb) Replacement
CHAPTER 3 MAINTENANCE PROCEDURES 3.2.1 Printed Circuit Board (PCB) Replacement Repairs are not recommended on the PCB. Component parts of the PCB are not stocked by Ohaus. Replacement is recommended rather than repairing. Replace the PCB for any of the following reasons: –... -
Page 27: Cable Set Replacement
PCB. 6. Close the Housing (if opened previously), re-insert and tighten the four screws previously removed. 7. Perform calibration procedures. (See Section 1.8.) Perform testing procedures. (See Chapter 4.) 3000 Series T31 Indicators Service Manual Ohaus Corporation www.ohaus.com... -
Page 28: Power Supply Replacement
21. Insert and tighten the screws that secure the Power Supply Cover. 22. Re-connect the Top and Bottom Housing, insert and tighten the four screws. 23. Connect the Indicator to AC power and test it. Ohaus Corporation www.ohaus.com 3000 Series T31 Indicators Service Manual... -
Page 29: Battery Replacement
10. Reassemble the Top Housing and Bottom Housing, and reconnect the Load Cell Cable to the Load Cell Connector on the Bottom Housing. 11. Perform calibration procedures. (See Section 1.8.) Perform testing procedures. (See Chapter 4.) 3000 Series T31 Indicators Service Manual Ohaus Corporation www.ohaus.com... - Page 30 CHAPTER 3 MAINTENANCE PROCEDURES Ohaus Corporation www.ohaus.com 3000 Series T31 Indicators Service Manual...
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Page 31: Chapter 4 Testing
These tests are performed on the Indicator using a known good scale base and test mass. At this point, the Indicator has been checked for full display, menu setup and calibrated. If a Load Cell Simulator is being used, proceed to paragraph 4.4. 3000 Series T31 Indicators Service Manual Ohaus Corporation www.ohaus.com... -
Page 32: Overload/Underload Test
Once the communications parameters match between the Indicator and either a computer or printer, it is possible to test the Indicator’s print function. Press the Print/Units button. Printing to an external printer or computer should occur – each time the button is pressed. Ohaus Corporation www.ohaus.com 3000 Series T31 Indicators Service Manual... -
Page 33: Chapter 5 Parts Lists & Diagrams
In all cases where a part is replaced, the balance must be thoroughly checked after the replacement is made. The balance MUST meet the parameters of all applicable specifications in this manual. If further technical information is needed, please contact your local Ohaus distributor, or: Ohaus Corporation, www.ohaus.com 19A Chapin Road P.O. - Page 34 CHAPTER 5 PARTS LISTS & DIAGRAMS 3000 SERIES T31P INDICATOR: HOUSING & INTERNAL PARTS Figure 5-1. Series 3000 T31P Indicator: Housing & Internal Parts. Ohaus Corporation www.ohaus.com 3000 Series T31 Indicator Service Manual...
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Page 35: 3000 Series T31P Indicator: Housing & Internal Parts
CHAPTER 5 PARTS LISTS & DIAGRAMS 3000 SERIES T31P INDICATOR: HOUSING & INTERNAL PARTS TABLE 5-1. T31P INDICATOR: HOUSING & INTERNAL PARTS Drawing Item Description Capacity and Readability Label Function Label Top Housing LCD Display with backlight, Main PCB Battery Bracket Kit... - Page 36 CHAPTER 5 PARTS LISTS & DIAGRAMS 3000 SERIES T31XW INDICATOR: HOUSING & INTERNAL PARTS Figure 5-1. Series 3000 T31XW Indicator: Housing & Internal Parts. Ohaus Corporation www.ohaus.com 3000 Series T31 Indicator Service Manual...
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Page 37: 3000 Series T31Xw Indicator: Housing & Internal Parts
Power Supply PCB Power Supply Cover Cable Fitting for AC Power Cord Cable Fittings for RS232 and Load Cell cables Internal Cable Mounts Hardware Kit I/O Filler Plugs for Cable Fittings Line Cord 3000 Series T31 Indicator Service Manual Ohaus Corporation www.ohaus.com... - Page 38 CHAPTER 5 PARTS LISTS & DIAGRAMS Ohaus Corporation www.ohaus.com 3000 Series T31 Indicator Service Manual...
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Page 39: Appendix A Setup & Calibration Values
0.1, 0.2, 0.5, 1, 2 0.5, 1, 2 5, 10, 15, 20, 25, 30, 40, 50, 60, 75, 100, 120, 150, 200, 1000, 2000 250, 300, 400, 500, 600, 750, 1000, 1200, 1500, 2000 3000 Series T31 Indicators Service Manual Ohaus Corporation www.ohaus.com... -
Page 40: Appendix A Setup & Calibration Values
5, 10, 15, 20, 25, 30, 40, 50, 60, 75, 100, 120, 150, 200, 10000, 20000 250, 300, 400, 500, 600, 750, 1000, 1200, 1500, 2000, 2500, 3000, 5000, 6000, 7500, 10000, 2000 Ohaus Corporation www.ohaus.com 3000 Series T31 Indicators Service Manual... -
Page 41: Appendix Bgeographical Adjustment Values
43°26′ - 44°32′ 44°32′ - 45°38′ 45°38′ - 46°45′ 46°45′ - 47°51′ 47°51′ - 48°58′ 48°58′ - 50°06′ 50°06′ - 51°13′ 51°13′ - 52°22′ 52°22′ - 53°31′ 53°31′ - 54°41′ 54°41′ - 55°52′ 3000 Series T31 Indicators Service Manual Ohaus Corporation www.ohaus.com... -
Page 42: Appendix B Geographical Adjustment Values
63°30′ - 64°55′ 64°55′ - 66°24′ 66°24′ - 67°57′ 67°57′ - 69°35′ 69°35′ - 71°21′ 71°21′ - 73°16′ 73°16′ - 75°24′ 75°24′ - 77°52′ 77°52′ - 80°56′ 80°56′ - 85°45′ 85°45′ - 90°00′ Ohaus Corporation www.ohaus.com 3000 Series T31 Indicators Service Manual... - Page 44 *80252598* P/N 80252598 SERVICE MANUAL: 3000 SERIES T31 INDICATORS...
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