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3-11

CHAPTER 3 REPAIR PROCEDURES

3.2.2 Display Circuit Board Repair or Replacement
It is suggested that if the Display Circuit Board is suspected of being faulty, it should be replaced rather
than repaired. The switches can be easily replaced. They are available as a set of 4. The LCD and
Backlight are difficult to replace. The AS and AV models are available with strain gauges and MFR type
load cells. Figure 3-9 illustrates both types of load cells with Internal calibration motor drives.

To replace the Display Circuit Board, proceed as follows:

1. Remove the balance cover, refer to section 3.2.1.

CAUTION

WHEN HANDLING THE PRINTED CIRCUIT BOARD,
HANDLE BY EDGES ONLY! DO NOT TOUCH FOIL SIDE
OF BOARD. STATIC DISCHARGE MAY DAMAGE SOME
COMPONENTS.

2. The Display Circuit Board is secured with 4 screws. Remove the screws.

See Figure 3-9.

Figure 3-9. Large Frame Balance Opened.

RS232 Interface Board (COM 1)

Communications Interface Board (COM 2)

Load Cell Assembly (Strain Gauge)

Load Cell Assembly (MFR)

Bottom Housing

Main PC Board

Interconnecting Cable

4 Mounting Screws

Display Board

LCD & Backlight (Not shown)

Top Cover

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Summary of Contents for Adventurer Pro Balances

Page 1: ...SERVICE MANUAL ADVENTURER PRO BALANCES and ADVENTURER SL BALANCES 99 Washington Street Melrose MA 02176 Phone 781 665 1400 Toll Free 1 800 517 8431 Visit us at www TestEquipmentDepot com ...

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Page 3: ...e 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 manual is subject to change Copyright 2005 Ohaus Corporation all rights reserved TM Registered trademark of Ohaus Corporation ...

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Page 5: ...ment AV Models only 3 6 3 1 5 Strain Gauge Load Cell Replacement 3 7 3 2 Repair Procedures Large Frame AS and AV Models 3 8 3 2 1 Opening the Balance 3 8 3 2 2 Display Circuit Board Repair or Replacement 3 11 3 2 3 Main Printed Circuit Board Replacement 3 12 3 2 4 RS232 Interface COM 1 or COM 2 RS or USB Printed Circuit Board Replacement 3 13 3 2 5 Strain Gauge Load Cell Replacement with InCal 3 1...

Page 6: ...ter Load 4 9 4 4 RS232 Interface Test AV Models Only 4 11 4 4 1 Connecting the RS232 Interface 4 11 4 4 2 Communication 4 13 4 4 3 Commands 4 13 4 5 Print Test 4 14 4 6 Testing the AC Adapter 4 15 4 7 InCal Motor Testing 4 15 CHAPTER 5 DRAWINGS AND PARTS LISTS 5 1 Drawings 5 1 5 2 Parts Lists 5 3 APPENDIX A STANDARD CALIBRATION A 1 Span Calibration A 1 A 2 Linearity Calibration A 1 APPENDIX B SERV...

Page 7: ...4 4 4 4 AS Models Test Masses 4 4 4 5 AV Models Test Mass Values 4 6 4 6 AS Models Test Mass Values 4 6 4 7 AV Models Load Cell Up Stop Adjustment Tolerances 4 6 4 8 AS Models Load Cell Up Stop Adjustment Tolerance 4 7 4 9 AV Models Test Masses 4 9 4 10 COM 1 Interface Pin Connections 4 12 4 11 COM 2 Interface Pin Connections 4 12 4 12 RS232 Command table 4 13 5 1 Replacement Parts List for AV and...

Page 8: ...hanism 3 22 3 32 InCal Mechanism Alignment 3 23 3 33 Centering InCal Weight 3 23 3 34 Removing Position Sensor Assembly 3 24 3 35 Ratio Beam Alignment 3 24 3 36 Base plate Removal 3 25 3 37 Load Cell Mounting Components 3 25 3 38 Load Cell Alignment to Base Plate 3 26 3 39 Temperature Sensor Board Unsoldering Location 3 26 3 40 Load Cell PC Board Item Locations 3 27 3 41 Load Cell PC Board Removed...

Page 9: ...ontact Board and Screw 3 36 3 63 Test Connector Location 3 37 3 64 Area of Detail 3 37 4 1 LCD Full Display for Models AV 4 1 4 2 LCD Full Display for Models AS 4 1 4 3 Load Cell End View Adjustments 4 5 4 4 Off Center Load 4 8 4 5 MFR Adjustments 4 10 4 6 COM 1 Connector 4 12 4 7 COM 2 MINI DIN Connector 4 12 4 8 COM 2 USB Type B Connector 4 12 4 9 Motor Wiring Diagram 4 16 5 1 Adventurer AS and ...

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Page 11: ... service calibration procedures Appendix C Adventurer Pro Service Tool Instructions Used to update software restore EEPROM data and when loadcells are changed Before servicing the balance you should be familiar with the Instruction Manual which is packed with every balance The procedures in this manual assumes the technician performing them has a working knowledge of the use of standard hand tools...

Page 12: ...venturer Pro instruction manual 4 Adventurer Pro Tools zip 5 Set of Feeler gauges ranging from 0 40mm 0 16in to 0 65mm 0 026in 6 Torque wrenches 7 RS232 Communication Board required for AS Model testing P N 12103902 8 RS232 Connecting Cable Set required for AS Model testing P N 12103910 9 MFR Service Tool P N 80250383 10 RS232 Cable Balance to PC P N 80500525 1 3 2 Standard Tools and Test Equipmen...

Page 13: ...00 600 700 800 1 E2 AV2102 C 2100g 1000 2000 1000 2000 1000 1 E2 AV3102 C 3100g 1000 2000 3000 1500 3000 1000 2000 1 E2 AV4102 C 4100g 2000 3000 4000 2000 4000 2000 3000 2 F1 AV2101 C 2100g 500 1000 1500 2000 1000 2000 500 1000 1500 2 F1 AV4101 C 4100g 1000 2000 3000 4000 2000 4000 1000 3000 4000 2 F1 AV8101 C 8100g 2000 3000 4000 4000 8000 2000 3000 4000 5000 6000 7000 6000 7000 8000 8000 1 4 TES...

Page 14: ...00 2 F1 AS312 310 150 200 250 or 300 150 and 300 1 E2 AS313 310 150 200 250 or 300 150 and 300 2 F1 AS612 610 300 400 500 or 600 300 and 600 4 F2 AS811 810 200 300 400 500 600 700 or 800 400 and 800 2 F1 AS1502 1500 1000 or 1500 1000 and 1500 2 F1 AS3101 3100 1500 2000 2500 or 3000 1500 and 3000 2 E2 AS3102 3100 1000 2000 or 3000 2000 and 3000 2 F1 AS6101 6100 3000 4000 5000 or 6000 3000 and 6000 ...

Page 15: ...H x D in cm 7 6 x 5 7 x 10 8 7 x 12 x 11 8 8 7 x 7 5 11 8 7 6 x 2 8 x 10 19 3 X 14 5 X 25 4 22 x 30 x 30 22 x 19 x 30 19 3 x 7 2 x 25 4 Net Weight lb kg 3 1 1 4 8 7 4 0 7 3 3 3 2 6 1 2 3 3 1 5 Net Weight with InCal lb kg 9 6 4 4 8 2 3 7 Item Number AV812 AV212C AV412C AV812C AV2102 AV3102 AV4102 AV2101 AV4101 AV2102C AV3102C AV4102C Capacity g 810 210 410 810 2100 3100 4100 2100 4100 Readability g...

Page 16: ... m 0 0 2 g m 0 3 g m 0 0 2 g m 0 3 g m 0 0 2 g 2 s t i n U g n i h g i e W e r o p a g n i S l e a T i S t l e a T g n o K g n o H N n o t w e N N G n i a r G t z o y o r T e c n u O t w d t h g e i w y n n e P t c t a r a C b l d n u o P z o e c n u O g k m a r g o l i K g m a r G g m m a r g i l l i M C m o t s u C B t h a B m l a h g s e M m e m m o M t a l o T t l a c i T t l e a T n a w i a T...

Page 17: ...nce read all chapters of this manual to familiarize yourself with the balance components and operation Do not attempt repairs unless you fully understand the operation of the balance Small frame balances measure W x D in cm 7 6 x 10 19 3 x 25 4 large frame balances measure 8 7 x 11 8 22 x 30 2 2 1 Diagnosis 1 Isolate and identify the symptom 2 Refer to Table 2 1 Diagnostic guide and locate the sym...

Page 18: ...atch the specified voltage on the adapter If voltage is low or nonexistent replace the ac adapter If OK proceed Refer to section 3 1 1 or 3 1 2 and open the balance Leave the cable connected to the top housing Reconnect the ac adapter to the balance Check ac voltage at the input connector terminals Should read 12 Volts ac If voltage is not present replace the Input connector If OK pro ceed See Tab...

Page 19: ...e top housing Check dc voltage at the battery box con nector Voltageshouldreadapproximately 6 Volts dc If voltage is not present at the connector examinebatteryconnectorsfor corrosion and wiring harness for breaks Clean any corrosion on the battery con nectors Repair breaks to wiring harness If OK proceed See Table 2 3 If the scale fails to turn on the Main PC Boardisdefectiveandshouldbereplaced R...

Page 20: ...he resistance is zero Checkeach switch in a similiar manner If continuity is not present on a particular switch replace the affected switch or actuator NOTE Actuators are part of the top hous ing To replace an actuator the top hous ing must be replaced Repair Procedures 3 1 or 3 2 If the switches and actuators are OK replace the Main PC Board Repair Procedures 3 1 3 or 3 2 3 TABLE 2 3 BALANCE DOES...

Page 21: ... properly enter the service mode Appendix B and perform a Linearity and Span calibration again If this fails either the load cell is defective and will require replacement or the load cell adjustment stops have loos ened and have to be reset Perform Repair Procedures 3 1 1or 3 2 1 and open the balance Remove the cover from the load cell Check the up down stops in accordance with section 4 4 and re...

Page 22: ...o the base housing and power applied Notice if any obstructions or belt drive is properly set in place Cycle the internalcalibrationonandoffseveraltimes if the motor drive fails to respond it is defective and must be replaced Perform RepairProcedures3 2 6 Afterreplace mentofmotordrive testtheunitforproper functions and calibration Remove the cover from the load cell Check the operation if any of t...

Page 23: ...r Weight reading below power On Zero limit Place platform on balance 8 2 Error 8 1 Weight reading exceeds Power On Zero limit Clear the pan Overload Overload on power up Check up down stops repair or replace load cell Error 8 3 Weight reading exceeds overload limit after Balanceisoverloaded remove Overload power up excess weight Error 8 4 Weight reading below underload limit after Put platform on ...

Page 24: ... continue to weigh with less accurate re sults REF WT Err Reference weight too small The weight on Increase sample size the platform is too small to define a valid reference weight and parts REF Err Reference weight too low for accurate Increase sample size parts counting or percent weighing Error Config Set EEPROM Checksum error See error 53 Error LFT Set No user calibration is stored Turn off LF...

Page 25: ...d Circuit Boards should be handled by grasping the edges only and never placing fingers on any of the runs or traces 3 1 1 Opening the Balance To disassemble the balance refer to Figure 3 1 on the next page that illustrates all of the Adventurer Pro and Adventurer SL models Components shown on top of the balances must be removed before gaining access to the inside of the balance proceed as follows...

Page 26: ...AS811 AS3101 AS6101 AS8100 AS153 AV MODELS AS MODELS Pan PanSupport Wind Ring Adapter Ring EMC Plate Cover Screws 2 Pan EMC Plate Cover Screws 2 Pan PanSupport PanSupport EMC Plate Cover Screws 2 Draft Shield Cover Draft Shield Figure 3 1 Top of Balances 3 1 1 Opening the Balance Cont AdapterRing ...

Page 27: ... replaced rather than repaired The switches can be easily replaced They are available as a set of 4 The LCD and Backlight are difficult to replace To replace the Display Circuit Board proceed as follows 1 Remove the balance cover refer to section 3 1 1 CAUTION WHEN HANDLING THE PRINTED CIRCUIT BOARD HANDLE BY EDGES ONLY DO NOT TOUCH FOIL SIDE OFBOARD STATICDISCHARGEMAYDAMAGESOME COMPONENTS 2 The D...

Page 28: ...3 4 CHAPTER 3 REPAIR PROCEDURES Figure 3 3 Balance Opened 3 1 2 Display Circuit Board Repair or Replacement Cont ...

Page 29: ...reviously removed 9 Check the performance of the Balance and perform Linearity Calibration A 2 3 1 3 Main Printed Circuit Board Replacement It is suggested that if the Main Printed Circuit Board is suspected of being faulty it should be replaced To replace the Main Printed Circuit Board proceed as follows 1 Remove the balance cover refer to section 3 1 1 CAUTION WHEN HANDLING THE PRINTED CIRCUIT B...

Page 30: ...uit Board Replacement AV Models only To replace the RS232 Interface Printed Circuit Board proceed as follows 1 Remove the balance cover refer to section 3 1 1 CAUTION WHEN HANDLING THE PRINTED CIRCUIT BOARD HANDLE BY EDGES ONLY DO NOT TOUCH FOIL SIDE OFBOARD STATICDISCHARGEMAYDAMAGESOME COMPONENTS 2 Disconnect the cable from theRS232 Inter face printed Circuit Board assembly See Figure 3 5 3 The R...

Page 31: ...over the Load Cell The right hand side of the Load Cell Shield should be placed on the outside of the Load Cell enclosure 8 On AS models connect an external RS232 communication board and cable to the Main PC board 9 Temporarily reassemble the balance 10 See Appendix C Adventurer Pro Service Tools and follow instructions for replacing Load Cell 11 Open the balance remove the RS232 board and cable f...

Page 32: ... series resistor to earth ground is required The Printed Circuit Boards should be handled by grasping the edges only and never placing fingers on any of the runs or traces 3 2 1 Opening the Balance To disassemble the balance refer to Figures 3 7 and 3 8 that illustrates all of the Adventurer AV and Adventurer AS models Components shown on top of the balances must be removed before gaining access t...

Page 33: ... MFR TYPE AV213 AV213C AV313 AV313C AV413 AV413C MFR TYPE Glass Doors Pan Cover Screws 2 AV MODELS AV2102 AV3102 AV4102 MFR TYPE AV412C AV812C AV2101C AV41 1C AV8101C STRAIN GAUGE TYPE AV2102C AV3102C AV4102C MFR TYPE AV212C STRAIN GAUGE TYPE Pan PanSupport EMC Plate Cover Screws 2 Pan PanSupport WindRing EMC Plate Cover Screws 2 ...

Page 34: ... 3 REPAIR PROCEDURES Figure 3 8 Top of AS Balances 3 2 1 Opening the Balance Cont AS MODELS AS64 AS214 MFR TYPE AS3102 MFR TYPE AS313 MFR TYPE Pan EMC Plate Cover Screws 2 PanSupport Glass Doors Pan Cover Screws 2 ...

Page 35: ...lls with Internal calibration motor drives To replace the Display Circuit Board proceed as follows 1 Remove the balance cover refer to section 3 2 1 CAUTION WHEN HANDLING THE PRINTED CIRCUIT BOARD HANDLE BY EDGES ONLY DO NOT TOUCH FOIL SIDE OFBOARD STATICDISCHARGEMAYDAMAGESOME COMPONENTS 2 The Display Circuit Board is secured with 4 screws Remove the screws See Figure 3 9 Figure 3 9 Large Frame Ba...

Page 36: ...ce of the Balance 3 2 3 Main Printed Circuit Board Replacement It is suggested that if the Main Printed Circuit Board is suspected of being faulty it should be replaced To replace the Main Printed Circuit Board proceed as follows 1 Remove the balance cover refer to section 3 2 1 CAUTION WHEN HANDLING THE PRINTED CIRCUIT BOARD HANDLE BY EDGES ONLY DO NOT TOUCH FOIL SIDE OFBOARD STATICDISCHARGEMAYDA...

Page 37: ...rd COM 1 or COM 2 proceed as follows NOTE AS models do not have communications COM 2 board is optional on AV models 1 Remove the balance cover refer to section 3 2 1 CAUTION WHEN HANDLING THE PRINTED CIRCUIT BOARD HANDLE BY EDGES ONLY DO NOT TOUCH FOIL SIDE OFBOARD STATICDISCHARGEMAYDAMAGESOME COMPONENTS 2 Disconnect the cable from the RS232 Inter face printed Circuit Board assembly See Figure 3 1...

Page 38: ...t drop or hit the Load cell Any damage to the Load Cell can render it inoperative 2 Install the replacement Load Cell using the 4 screws previously removed and connect the flexible cables NOTE Load cells with internal calibration contain a power cable to the calibration motor drive mechanism 3 Replace the Load Cell Shield over the Load Cell Press firmly into place 4 Reassemble the balance 5 See Ap...

Page 39: ...d as follows 1 Remove the balance cover in accordance with procedures in paragraph 3 2 1 2 Perform procedure as described in paragraph 3 2 5 and remove the Strain gauge 3 Remove the screws from the InCal Mechanism as shown in Figure 3 13 Figure 3 13 InCal Mechanism Identification InCal Weights InCal Mechanism InCal Mechanism Screws Slide Off Motor Base Plate 4 Slide the InCal mechanism off as show...

Page 40: ...ng Gear Figure 3 16 Removing Top Gear 4 Refer to Figure 3 17 which illustrates the top Gear removed the Motor can now be re moved from the InCal Mechanism MotorInstallation 1 Install the replacement Motor into position with the Timing Belt as shown in Figure 3 17 2 Slide on the Top Gear as shown in Figure 3 16 3 Refer to Figure 3 15 lift the Motor slightly and position the Timing Belt on the Top G...

Page 41: ...hanism Installation 1 Remove the Motor Coupler as shown in Figure 3 20 2 Refer to Figure 3 21 and rotate the shaft clockwise and counter clockwise to ensure the operation is smooth if not replace the entire Load cell Motor Coupler Figure 3 20 Motor Coupler Position Weights Up Coupler Shaft Figure 3 21 Coupler Shaft Rotation 3 With the weights in the upper position reinstall the Motor Coupler as sh...

Page 42: ...ad cells Major components are shown InCal Weight InCal Motor Cable Connector Aluminum Sleeves Ratio Beam Base Plate InCal Weight Arm InCal Mechanism InCal Weight Position Sensor Assembly Cone Overload Stop MFR Block InCal Motor Shield InCal Motor Load Cell PCB Ratio Beam Cable Test Connector Main PC Board Cable Connector Contact Board Coil Wires Figure 3 22 MFR Load Cell Components Vertical Stop S...

Page 43: ...in Theproceduresarenotstand alone youmuststartfromthebeginning CAUTION Extreme care must be exercised so as not to twist or deform the Load Cell in any way Do not drop or hit the Load cell Any damage to the Load Cell can render it inoperative 1 Remove the Top Housing in accordance with the procedures in paragraph 3 2 1 2 Remove the Load Cell Shield by grasping the sides and pulling upwards 3 Remov...

Page 44: ...3 2 7 and remove the MFR load cell 3 Refer to Figure 3 24 for InCal Motor location 4 Remove the 2 screws holding the InCal Motor and InCal Motor shield in place from the InCal mechanism See Figure 3 25 Figure 3 24 InCal Motor Location Figure 3 25 InCal Motor Removal 9 See Appendix C Adventurer Pro Service Tools and follow instructions for replacing Load Cell 10 Remove the RS232 board and cable fro...

Page 45: ...3 27 Motor Coupler 3 Remove the screw and Coupler from the old InCal Motor 4 OnthereplacementMotor installthescrewandCoupler thenrotatetheMotorshaftbyhand until the shaft is in a fully counter clockwise position as shown in Figure 3 28 The Coupler should be in the position as shown if not remove the screw and coupler Reposition as shown in Figure 3 28 tighten the screw on the Motor shaft Rotate th...

Page 46: ...the screws previously removed 7 Replace the MFR Load Cell refer to paragraph 3 2 7 3 2 9 InCal Mechanism Removal Replacement InCal Mechanism Removal NOTE Replacement InCal Mechanism s are supplied assembled with the InCal Motor installed 1 See Figure 3 30 and remove the 3 screws as shown from the InCal Mechanism 3 Mounting Screws Figure 3 30 InCal Mechanism Mounting Screws Figure 3 31 Removing the...

Page 47: ...ly tighten at this time 4 Position the InCal Mechanism so that the spacing is between the InCal Weight and the InCal Weight Arms even on both sides as shown in Figure 3 32 Adjust Spacing Figure 3 32 InCal Mechanism Alignment 5 See Figure 3 33 and make sure the InCal Weight is lined up properly as shown on the InCal Weight Arm The Weight must be centered in the slots of the InCal Weight Arm Figure ...

Page 48: ... Board see Figure 3 34 Figure 3 34 Removing Position Sensor Assembly 3 Screws Unsolder 6 Contacts Position Sensor Installation 1 Mount Position Sensor Assembly align centrally on the Ratio Beam Pin see Figure 3 35 and fasten with the three screws Please note The flange of the Position Sensor Assembly is prebent to ensure its precise positioning after it screwing on Please do not attempt to bend it...

Page 49: ...and remove the Weigh Below Hook and screw Weigh Below Hook and Screw Mounting Screws Figure 3 36 Base Plate Removal 2 Hold the MFR Load Cell and remove the 2 Load Cell Mounting Screws Figure 3 37 illustrates the components Figure 3 37 Load Cell Mounting Components MFR Load Cell Base Plate Weigh Below Hook and Screw Mounting Screws Note At this point other repairs may be made to the Load Cell Matin...

Page 50: ...op of the load Cell align it with the Base Plate as shown in Figure 3 38 Now carefully tighten the 2 mounting screws and recheck alignment Figure 3 38 Load Cell Alignment to Base Plate Alignment Area 4 Install the Weigh Below Hook and screw at the bottom of the Base Plate 3 2 12 Changing the Load Cell PC Board 1 Remove Load Cell from Mounting Plate refer to paragraph 3 2 11 2 Unsolder Temperature ...

Page 51: ...wing in first turn the self tapping cell board screw in a counterclockwise direction until the first screw thread engages and then tighten it Load Cell Board Screw Unsolder Position Sensor Assembly Unsolder Temperature Sensor Board Load Cell PC Board Ratio Beam Cable Figure 3 40 Load Cell PC Board Item Locations Figure 3 41 Load Cell PC Board Removed from Load Cell Position Sensor Temperature Sens...

Page 52: ...res Fastening Screw Figure 3 42 Contact Board Location 2 Remove Contact Board from holder and screw onto the ratio Beam see Figure 3 43 This is the hole directly above 3 Insert the centering pins from the service tool set in the holes provided See Figures 3 44 and 3 45 Figure 3 43 Close Up of Mounting Figure 3 44 Ratio Beam and Weight Arm Components Nuts and Washers InCal Weight Arm Screws and Was...

Page 53: ...45 and carefully loosen and remove the nuts on the Ratio Beam while holding the screw heads to prevent movement This is very important Figure 3 45 Centering Pins Installation Centering Pins Installed Centering Pins Installed Figure 3 46 Loosening Ratio Beam Nuts Loosen Nut Ratio Beam Hold Stationery ...

Page 54: ...wn in Figure 3 47 Figure 3 47 Ratio Beam Screws and Washers Removed 6 RefertoFigures3 44and3 48andcarefullyloosenandremovethenutsontheInCalWeight Arm while holding the screw head to prevent movement This is very important Figure 3 48 Loosening InCal Weight Arm Nuts InCal Weight Arm Hold Stationery Loosen Nut ...

Page 55: ...as shown in Figure 3 49 Figure 3 49 InCal Weight Arm Screws and Washers Removed 8 Carefully slide the InCal Weight Arm as shown in Figure 3 50 Figure 3 51 illustrates the InCal Weight Arm removed InCal Weight Arm Figure 3 51 InCal Weight Arm Removed Figure 3 50 InCal Weight Arm Removal InCal Weight Arm ...

Page 56: ...es Removed Aluminum Sleeves Aluminum Sleeves 10 Refer to Figure 3 53 and remove the centering pins as shown Figure 3 53 Centering Pins Removed Centering Pins 11 Note the position of the Vertical Adjustment Screw Turn the Vertical Adjustment Screw so that the Ratio Beam can be removed Figure 3 54 Vertical Adjustment Screw Positioning Vertical Adjustment screw ...

Page 57: ...ont 12 Carefully lift out the Ratio Beam as shown in Figure 3 55 Figure 3 55 Removing the Ratio Beam 12 Remove the Aluminum Sleeves see Figure 3 56 This completes the disassembly Sleeves Ratio Beam Ratio Beam Removed Sleeves Figure 3 56 Removing the Aluminum Sleeves ...

Page 58: ...fer to Figure 3 58 and examine the load Cell slotted areas and make sure all areas are clean and free of debris Hold the Load Cell up to the light to see into the slotted areas If dust or dirt appears in any slotted area use canned pressurized clean air that is normally used for cameras and gently blow out any dirt Use extreme care Critical area is shown in Figure 3 58 CAUTION DO NOT USE COMPRESSE...

Page 59: ...luminum Sleeves 5 Refer to figure 3 60 and inspect the slotted area on the Ratio Beam and clean if necessary Slotted Area Figure 3 60 Ratio Beam Vane Slotted Area Vane 6 Refer to Figure 3 55 and carefully place the Ratio Beam into postion in the Load Cell 7 Refer to Figure 3 52 and replace the Aluminum Sleeves 8 Carefully slide the InCal Weight Arm into position see Figure 3 50 9 Do not use tools ...

Page 60: ...ely 45 degrees 14 Refer to Figure 3 53 and remove the centering pins 15 Refer to figure 3 53 and make sure that the ratio Beam coil is centered in the Magnet assembly If the coil is not centered inspect the centering ring loosen the Ratio beam nuts and repeat from step 12 16 Refer to Figure 3 62 and remove the contact board screw a and place as shown in b Be very careful not to break the fine cont...

Page 61: ...ector 5 Apply power to the balance Figure 3 63 Test Connector Location Setting Vertical Stop 1 Refer to Figure 3 63 Attach a Digital Voltmeter to the pins indicated on the test connector shown in Figure 3 64 2 Measure the voltage when the Ratio Beam is at the bottom of the vertical stop 3 Measure the voltage when the Ratio Beam is carefully lifted with thumb and forefinger until it is at the top o...

Page 62: ...3 38 CHAPTER 3 REPAIR PROCEDURES ...

Page 63: ...ce 2 Plug the AC Adapter into a suitable power source If the AC Adapter supplied with the balance is rated for a different voltage use an appropriate adapter to match the supply voltage 4 1 2 AV Models Segment Display Test 1 Turn the balance on by pressing ON ZERO Off all segments are enabled and displayed briefly then followed by a software revision number See Figure 4 1 for full display 2 Tare t...

Page 64: ...2101 Repeatability Std Dev 0 001 0 01 0 01 0 1 0 1 Off Center Load g 0 004 0 03 0 02 0 03 0 1 Linearity g 0 002 0 02 0 01 0 02 0 2 Model AV4101 AV8101 Repeatability Std Dev 0 1 0 1 Off Center Load g 0 2 0 3 Linearity g 0 2 0 2 TABLE 4 2 AS PERFORMANCE TEST TOLERANCES Model AS64 AS214 AS153 AS313 AS312 Repeatability Std Dev 0 0001 0 0001 0 001 0 001 0 010 Off Center Load g 0 0003 0 0003 0 003 0 003...

Page 65: ...any part of the moving Pan can cause a balance to fail the Repeatability Test Inspect and correct as necessary 2 An error in the Off Center Load Test can affect the results of the Repeatability Test Inspect and correct if necessary See Off Center Load Test 3 Foreign material or debris located in the balance between the Pan Pan Support and the Top Cover can cause the balance to fail the test 4 Envi...

Page 66: ...g AV812 2100g 1g 500g 1000g 1500g 2000g AV2101 4100g 1g 1000g 2000g 3000g 4000g AV4101 8100g 1g 2000g 4000g 6000g 8000g AV8101 TABLE 4 4 AS MODELS TEST MASSES Capacity Test mass Load 1 Load 2 Load 3 Load 4 Model 65 1g 15g 30g 45g 60g AS64 151 1g 40g 80g 120g 151g AS153 210 1g 50g 100g 150g 200g AS214 310 1g 75g 150g 225g 300g AS312 310 1g 80g 150g 240g 310g AS313 610 1g 150g 300g 480g 610g AS612 8...

Page 67: ...djusting of the down stop and up stop To make adjustments the Load Cell Assembly must be removed from the balance Perform procedures 3 1 1 3 1 5 for AV models and 3 2 1 3 2 5 for AS models and remove the Load Cell Assembly from the balance NOTE These procedures will require feeler gauges ranging from 0 40mm 0 16in to 0 65mm 0 026in Down Stop Adjustment Checking and adjusting the down stop 1 Place ...

Page 68: ...E MAY OCCUR USE FEELER GAUGES TO CHECK CLEARANCES 1 Using a feeler gauge check the clearance of the up stops See Tables 4 6 or 4 8 2 If the clearance is excessive adjust the nuts using the data in Tables 4 7 or 4 8 See Figure 4 3 The screw with the nuts should be held fast while adjusting the nuts Locktite the nuts when completed Do not pull up on the Load Cell TABLE 4 6 AS MODELS TEST MASS VALUES...

Page 69: ... 3100g 0 75 0 030 0 90 0 035 6100g 0 75 0 030 0 90 0 035 8100g 0 75 0 030 0 90 0 035 4 2 4 Load Cell Adjustments Strain Gauge Models Only Cont Up Stop Adjustment Cont After the transducer has been adjusted assemble the balance retest and recalibrate TABLE 4 7 AV MODELS LOAD CELL UP STOP ADJUSTMENT TOLERANCES Capacity of Load Cell Min mm in Max mm in 51g 0 40 0 016 0 45 0 018 210g 0 60 0 024 0 70 0...

Page 70: ...nspect and correct the following areas 1 Check for mechanical obstructions Any foreign object touching any part of the moving Pan can cause a balance to fail the Repeatability Test Inspect and correct as necessary 2 An error in the Off Center Load Test can affect the results of the Repeatability Test Inspect and correct if necessary See Off Center Load Test 3 Foreign material or debris located in ...

Page 71: ...00g AV313 410g 1g 100g 200g 300g 400g AV413 2100g 1g 500g 1000g 1500g 2000g AV2102 3100g 1g 750g 1500g 1250g 3000g AV3102 4100g 1g 1000g 2000g 3000g 4000g AV4102 1 Place the test mass on the balance and record the weight 2 Place Load 1 on the balance and press the ON ZERO Off button 3 Place the test load on the balance and record the weight 4 Place Load 2 on the balance and press the ON ZERO Off b...

Page 72: ...r load test and deter mine error 3 Remove Pan and Pan Support 4 Determineassociatedfilingpositionper Figure 4 5 Perform adjustment as re quired 5 Repeat above steps until balance is within tolerance as per Table 4 3 6 Turn the balance OFF and remove power 7 Remove the Pan and Pan Support 8 Install the load Cell Shield on the bal ance 9 Replace the Top Housing and and se cure with two Screws Figure...

Page 73: ...ter Baud Rate This submenu is used to select the desired baud rate B aud rates are available from 600 to 19 200 The default setting is 2400 Parity Parity can be set to 7 Odd 7 Even 7 No Parity or 8 No Parity The default setting is 7 No Parity Handshake can be set to Off XONXOFF Hardware The default setting is XONXOFF 4 4 1 Connecting the RS232 Interface When the interface is connected to a compute...

Page 74: ...7 CTS 8 RTS 9 Remote Print Figure 4 7 COM 2 MINI DIN Connector TARE PRINT External PRINT and or TARE switches may be installed as shown in the diagram Momentary contact switches must be used To enable this feature contact your local Ohaus office A 6 pin Mini DIN connector is provided when the optional second RS232 interface is installed COM2 Pin Connections 1 TxD 2 RxD 3 Ground 4 Vout 5 reserved f...

Page 75: ...stable P Print displayed weight stable or unstable CP Continuous Print 0P ends Continous Print SP Print displayed stable weight SLP Auto Print stable non zero displayed weight SLZP Auto Print stable non zero weight and stable zero reading xP Interval Print x Print Interval 1 3600 seconds 0P ends Interval Print H Enter Print Header Lines Z Same as pressing Zero Key T Same as pressing Tare Key xT Es...

Page 76: ...x Set PC reference weight x in grams Must have an APW stored P Print PC reference weight x Set reference weight x in grams Must have reference weight stored P Print percent reference weight xAW Set Animal Weigh Level to x x 3 7 10 13 seconds PAW Print Animal Weigh Level BAW Begin Animal cycle Manual Mode CW Clear locked weight weight threshold in Manual and Semi Auto modes xCO Set Checkweighing Ov...

Page 77: ...ins an internal potentiometer that is used to determine the motor position Figure 4 9 illustrates the wiring diagram of the motor To remove the calibration motor proceed as follows 1 Remove the balance cover in accordance with procedures in paragraph 3 2 1 2 Disconnect the motor cable from the Main PC board 3 Refer to Figure 4 9 and apply 5 Volts dc to pin 1 Brown wire and 5 Volts dc to pin 2 Oran...

Page 78: ...ange of movement Measure across pins 4 and 5 and again rotate the motor shaft in one direction and then the other The resistance should change uniformly If there is a short or open winding the motor must be replaced The potentiometer determines the shaft position by circuitry on the Main PC board 7 If the motor appears to be good after all tests examine the lifting mechanism and belt drive Note If...

Page 79: ...factory service technician will be available to provide assistance Outside the U S A please contact Ohaus Corporation 19 Chapin Road Pine Brook NJ 07058 USA www ohaus com Tel 973 377 9000 Fax 973 593 0359 MODEL DESIGNATIONS The following table explains the various model designations capacities readabilty and approvals used with the Adventurer Pro AV models and the Adventurer Pro SL models XXX XXXX...

Page 80: ...5 2 CHAPTER 5 DRAWINGS AND PARTS LISTS Figure 5 1 Adventurer AS and AV Models Small Frames Exploded View 1 2 3 4 5 3 3 4 4 9 1 4 1 2 1 3 1 5 1 5 1 6 2 0 2 2 2 3 1 5 1 8 2 4 1 9 2 5 1 0 7 6 8 1 7 2 1 1 1 ...

Page 81: ...m AV412 R U DM DMR DMU N NR NU AVG412 R U AV811 R AVG811 R AV812 R U M MR MU N NR NU AVG812 R U AV2101 R U DM DMR DMU N NR NU AVG2101 R U AV4101 R U DM DMR DMU N NR NU AVG4101 R U AV8100 R AVG8100 R AV8101 R U M MR MU N NR NU AVG8101 R U AS612 ASG612 AS811 ASG811 AS1502 AS3101 ASG3101 AS6101 ASG6101 AS8100 ASG8100 3 12102940 Weighing Pan 4 7 dia 120mm dia AV212 R U DM DMR DMU N NR NU AVG212 R U AS...

Page 82: ...ASG8100 4 12102943 Pan Support 4 7 dia 120mm dia AV212 R U DM DMR DMU N NR NU AVG212 R U AS312 ASG312 4 12102942 Pan Support 3 9 dia 100mm dia AV53 R U N NR NU M AVG53 R U AS153 ASG153 5 12102947 EMC Plate round AV53 R U N NR NU M AVG53 R U AV212 R U DM DMR DMU N NR NU AVG212 R U AS153 ASG153 AS312 ASG312 6 12103948 EMC Plate square AV412 R U DM DMR DMU N NR NU AVG412 R U AV812 R U M MR MU N NR NU...

Page 83: ...MR DMU N NR NU AVG2101 R U AV4101 R U DM DMR DMU N NR NU AVG4101 R U AV8101 R U DM DMR DMU N NR NU AVG8101 R U AS612 ASG612 AS811 ASG811 AS1502 AS3101 ASG3101 AS6101 ASG6101 AS8100 ASG8100 9 12103854 Top Housing See Note 1 10 12103929 Function Label AV See Note 2 10 12103853 Function Label AS See Note 3 11 12103980 In use Cover See Note 1 12 12103905 Switch Set of 4 See Note 1 13 12103901 Display ...

Page 84: ...ith tape See Note 1 20 12103900 Main Board Assembly AV See Note 2 20 12103881 Main Board Assembly AS See Note 3 21 12103936 Level See Note 1 22 12103923 Feet Set of 4 See Note 1 23 12103926 Battery Compartment Cover See Note 1 24 42904570 Kit Load Cell replacement AV53 R U N NR NU M AVG53 R U AS153 ASG153 24 42904571 Kit Load Cell replacement AV212 R U AVG212 R U AS312 ASG312 TABLE 5 1 REPLACEMENT...

Page 85: ...placement AS1502 24 42904576 Kit Load Cell replacement AV2101 R U DM DMR DMU N NR NU AVG2101 R U AV4101 R U DM DMR DMU N NR NU AVG4101 R U AV8101 R U N M MR MU NR NU AVG8101 R U AS3101 ASG3101 AS6101 ASG6101 24 42904577 Kit Load Cell replacement AV8100 R AVG8100 AVG8100R AS8100 ASG8100 25 12102323 Adapter 230V AU 25 12102322 Adapter 240V GB 25 12102321 Adapter 230V EU 25 12102320 Adapter 120V US 9...

Page 86: ...8100 R AV8101 R U M MR MU N NR NU AVG8101 R U AS153 ASG153 AS312 ASG312 AS612 ASG612 AS811 ASG811 AS1502 AS3101 ASG3101 AS6101 ASG6101 AS8100 ASG8100 2 All AV Models AV53 R U N NR NU M AVG53 R U AV212 R U DM DMR DMU N NR NU AVG212 R U AV412 R U DM DMR DMU N NR NU AVG412 R U AV811 R AVG811 R AV812 R U M MR MU N NR NU AVG812 R U AV2101 R U DM DMR DMU N NR NU AVG2101 R U AV4101 R U DM DMR DMU N NR NU...

Page 87: ...5 9 CHAPTER 5 DRAWINGS AND PARTS LISTS Figure 5 2 Adventurer AS and AV Models Large Frames Exploded View ...

Page 88: ...264 R U C CR CU AS64 ASG64 AS214 ASG214 1 12103876 Draft Shield Glass 4 sides short 2 12103873 Draft Shield Top 3 12103874 Draft Shield Frame Set 5 12103886 Draft Shield Posts set of 4 short AV213 R U N NR NU C CR CU CM CMR CMU CN CNR CNU AVG213C CR CU AV313 R U N NR NU C CR CU CM CMR CMU CN CNR CNU AVG313 R U C CR CU AV413 R U N NR NU C CR CU CM CMR CMU CN CNR CNU AVG413 R U C CR CU AS313 ASG313 ...

Page 89: ...CR CU AV413 R U N NR NU C CR CU CM CMR CMU CN CNR CNU AVG413 R U C CR CU AS313 ASG313 8 12103887 EMC Plate Square Draft Shield Balances AV64 R U C CR CU CN CNR CNU AVG64R U C CR CU AV114 R U CR CU CM CMR CMU CNR CNU C AVG114 R U C CR CU AV264 R U C CR CU CM CMR CMU CNU CNR CN AVG264 R U C CR CU AS64 ASG64 AS214 ASG214 AS313 ASG313 AVG213 C CR CU R U AV313 R U N NR NU C CR CU CM CMR CMU CN CNR CNU ...

Page 90: ... CNR CNU AVG412C CR CU AV8101C CR CU CM CMR CMU CN CNR CNU AVG8101C CR CU AV812C CR CU CM CMR CMU CN CNR CNU AVG812C CR CU 8 12103883 EMC Plate Square Non InCal Balances AV2102 R U N NR NU AVG2102 R U AV3102 R U N NR NU AVG3102 R U AV4102 R U N NR NU AVG4102 R U AS3102 ASG3102 8 12103860 EMC Plate For Round Wind ring AV212C CR CU CM CMR CMU CN CNR CNU AVG212C CR CU 9 12103852 Top Housing See Note ...

Page 91: ...AVG8101C CR CU 10 12103945 Windring Round AV212C CR CU CDM CDMR CDMU CN CNR CNU AVG212C CR CU 11 12103877 Positioning Pin Included in Hardware Kit 12 12103877 Door Guide Included in Hardware Kit 13 12103929 Function Label AV See Note 2 13 12103853 Function Label AS See Note 3 14 12103879 In use Cover See Note 1 15 12103904 LCD AV See Note 2 15 12103851 LCD AS See Note 3 16 12103901 Display Board A...

Page 92: ...et of 4 See Note 1 24 12103855 Bottom Housing See Note 1 25 42904907 Load Cell Cable Strain Gauge AV212C CDM CDMR CDMU CN CNR CNU CR CU AVG212C CR CU AV412C CR CU CDM CDMR CDMU CN CNR CNU AVG412C CR CU AV812C CR CU CM CMR CMU CN CNR CNU AVG812C CR CU AV2101C CR CU CDM CDMR CDMU CN CNR CNU AVG2101C CR CU AV4101C CR CU CDM CDMR CDMU CN CNR CNU AVG4101C CU AV8101C CR CU CM CMR CMU CN CNR CNU AVG8101C...

Page 93: ... AVG313 C CR CU R U AV413 C CM CMR CMU CN CNR CNU CR CU N NR NU R U AVG413 C CR CU R U 26 12103884 Load Cell Shield See Note 1 27 42904505 Kit Load Cell Replacement MFR AV64 R U C CR CU CN CNR CNU AVG64C R U CR CU AV114 C R U CR CU CM CMR CMU CNR CNU AVG114 R U C CR CU AV214 C CR CU R U AV264 R U C CR CU CM CN CNR CMR CMU CNU AVG264 R U C CR CU AS64 ASG64 AS214 ASG214 27 42904515 Kit Load Cell Rep...

Page 94: ...N NR NU AVG2102 C CR CU R U AV3102 C CR CU CN CNR CNU N NR NU R U AVG3102 C CR CU R U AV4102 C CR CU CM CMR CMU CN CNR CNU N NR NU R U AVG4102 C CR CU R U 27 42904560 Kit Load Cell Replacement SG AV2101C CDM CDMR CDMU CN CNR CNU CR CU AVG2101C CR CU AV4101C CR CU CDM CDMR CDMU CN CNR CNU AVG4101C CU AV8101C CR CU CM CMR CMU CN CNR CNU AVG8101C CR CU 27 42904561 Kit Load Cell Replacement SG AV412C ...

Page 95: ...412C CR CU AV413C CR CU CM CMR CMU CN CNR CNU AVG413C CR CU AV812C CR CU CM CMR CMU CN CNR CNU AVG812C CR CU AV2101C CR CU CDM CDMR CDMU CN CNR CNU AVG2101C CR CU AV2102C CR CU CDM CDMR CDMU CN CNR CNU AVG2102C CR CU AV3102C CR CU CN CNR CNU AVG3102C CR CU AV4101C CR CU CDM CDMR CDMU CN CNR CNU AVG4101C CU AV4102C CR CU CDM CDMR CDMU CN CNR CNU AVG4102C CR CU AV8101C CR CU CM CMR CMU CN CNR CNU AV...

Page 96: ...FRAME MODELS Cont KEY NO PART NO DESCRIPTION 29 42904900 InCal Assembly Magnetic Force Restoration MFR 30 42904901 InCal Assembly Strain Gauge SG 31 12102323 Adapter 230V AU 31 12102322 Adapter 240V GB 31 12102321 Adapter 230V EU 31 12102320 Adapter 120V US 999 12103928 Hardware kit See Note 1 ...

Page 97: ...M CDMR CDMU CN CNR CNU CR CU AVG412C CR CU AV413 R U N NR NU C CR CU CM CMR CMU CN CNR CNU AVG413 R U C CR CU AV812C CM CMR CMU CN CNR CNU CR CU AVG812C CR CU AV2101C CDM CDMR CDMU CN CNR CNU CR CU AVG2101C CR CU AV2102 C CM CMR CMU CN CNR CNU CR CU N NR NU R U AVG2102 C CR CU R U AV3102 C CN CNR CNU CR CU N NR NU R U AVG3102 C CR CU R U AV4101C CDM CDMR CDMU CN CNR CNU CR CU AVG4101C CU AV4102 C ...

Page 98: ... N NR NU C CR CU CM CMR CMU CN CNR CNU AVG313 R U C CR CU AV412C CDM CDMR CDMU CN CNR CNU CR CU AVG412C CR CU AV413 R U N NR NU C CR CU CM CMR CMU CN CNR CNU AVG413 R U C CR CU AV812C CM CMR CMU CN CNR CNU CR CU AVG812C CR CU AV2101C CDM CDMR CDMU CN CNR CNU CR CU AVG2101C CR CU AV2102 C CM CMR CMU CN CNR CNU CR CU N NR NU R U AVG2102 C CR CU R U AV3102 C CN CNR CNU CR CU N NR NU R U AVG3102 C CR ...

Page 99: ...rated to ensure accurate weighing results Be sure to have the appropriate calibration weights available before beginning calibration 1 Press and hold the Menu Cal button until MENU is displayed then release the button CALIBRATE blinking is displayed 2 Press the Yes button to enter calibration menu 3 Press the Yes button to initiate span calibration Press the Exit button at any time to abort calibr...

Page 100: ...Inthecase ofablinkingsub menuontheprimarydisplay pressing Yes On ZeroOff buttonselectsthedisplayed sub menu stop blinking and the first available menu item in the sub menu is shown on the secondary display blinking while pressing the No Print Unit button causes the next or previous sub menu to be shown on the primary display blinking B 3 Ramp The first sub menu in the Service Menu is Ramp The ramp...

Page 101: ...display now breifly indicates LINEAR on the first line DONE on the second line The balance automatically advances to span calibration B 5 Span Calibration When in span calibration the display MENU is on the first line SPAN is shown on the second line 1 Press the Yes button to enter span calibration the display might briefly show 0 on the first line and BUSY on the second line The display then chan...

Page 102: ...new load cell 3 Update the software in the balance To install the software run Setup exe After installation run the program Adventurer Pro Service tool The program will have 3 tabs across the top of the screen Click on the tab for the function you wish to perform If the default settings for communicationhavebeenchanged clickonsettingsandchangethesettingsinthesoftwaretomatch ...

Page 103: ...provided with your request 3 After receiving the data file from Ohaus remove the batteries from the balance and power it from an AC adapter 4 Connect the balance to your computer and start the Adventurer Pro Service Tool Software 5 Click on the tab labeled Restore EEPROM 6 Enter the S N of the balance and the IDNR number from the battery compartment xxx xx xx xxxx 7 Enter the path to the location ...

Page 104: ...ment load cell These labels each contain a model number followed by the IDNR number Carefully select the label that matches exactly the model number of the balance 3 Remove the batteries from the balance Install the new label in the battery compartment replacing the old label Do not reinstall the batteries 4 Power the balance from an AC adapter 5 Connect the balance to your computer 6 Start the Ad...

Page 105: ...tton 11 The fields for Model Name will then be filled with models where the Load Cell can be used Click on the Model Name of the balance in which you are installing the load cell 12 Click on the start button 13 The software will indicate the download progress When complete the balance power should be cycled 14 Perform Service Linearity and Span calibrations see Appendix B Test balance C 3 To Updat...

Page 106: ...ter the path to the location of the file to download or click the browse button to locate the file 6 Click on the Start Download button 7 Cycle power to the balance when prompted 8 The software will indicate the download process When complete the balance power should be cycled again 9 Perform Service Linearity and Span calibrations see Appendix B Test balance ...

Page 107: ......

Page 108: ...P N 80250994 A SERVICE MANUAL ADVENTURER AV and AS MODEL BALANCES 80250994 Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 TestEquipmentDepot com ...

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