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CHAPTER 3 - MAINTENANCE PROCEDURES

Explorer

®

Series Service Manual

27

Ohaus Corporation www.ohaus.com

3. Turn the base back on its feet and remove the Top Housing. Lay the Top Housing alongside

so that the Bubble Level Light wiring can be disconnected.

4. Disconnect the Bubble Level Light wiring by pulling up on the connector.

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Содержание Explorer Balances

Страница 1: ...Explorer Balances Service Manual...

Страница 2: ......

Страница 3: ...OPENING THE BALANCE 20 3 2 1 Preparation for Opening Explorer Models 20 3 2 2 Opening the Terminal Module 22 3 2 3 Opening the Base Module with a Draftshield 24 3 2 4 Opening the Base Module Top Load...

Страница 4: ...E PARTS Non Draftshield models 55 5 3 BASE SPARE PARTS Draftshield models 57 5 4 BASE SPARE PARTS EX12001 EX24001 EX35001 59 5 5 DRAFTSHIELD SPARE PARTS 61 APPENDIX A USER CALIBRATIONS 63 A 1 SPAN CAL...

Страница 5: ...11 1 5 Explorer User Menu 12 2 1 Diagnostic Guide 16 4 1 Calibration Mass Values 39 4 2 Repeatability Worksheet 42 4 3 Linearity Test Reference and Load Masses 43 4 4 Off Center Load Mass Values 44 5...

Страница 6: ......

Страница 7: ...ploded views of Explorer balances identifying all serviceable components Appendix A User Calibrations Explains user calibration procedures that may need to be performed during service Appendix B Servi...

Страница 8: ...authority Before returning the balance to service an approved representative of the local Weights and Measures authority must certify the balance Ambient conditions x Indoor use only x Altitude Up to...

Страница 9: ...24M EX324M EX423M EX1103M EX4202M EX10202M EX10201M Capacity max g 220 320 420 1100 4200 10200 10200 Readability d g 0 0001 0 0001 0 001 0 001 0 01 0 01 0 1 Ver Interval e g 0 001 0 001 0 01 0 01 0 1...

Страница 10: ...01g 300g 0 0015g 200g 0 01g 400g 0 015g 500g 0 005g 1000g 0 01g 2000g 0 1g 4000g 0 15g 5000g 0 05g 10000g 0 1g 5000g 0 05g 10000g 0 1g Linearity g reference only 0 0002 0 0002 0 003 0 0024 0 03 0 024...

Страница 11: ...202E EX4202E EX6202E EX6201E Capacity g 220 420 320 4200 6200 6200 Readability d g 0 001 0 001 0 0001 0 01 0 01 0 1 Repeatability g 1d 0 001 0 001 0 001 0 01 0 01 0 1 Linearity g 2d 0 002 0 002 0 02 0...

Страница 12: ...001 0 00001 0 00001 0 0001 0 0001 0 0001 0 0001 kg n a 0 220000 0 420000 0 620000 1 100000 n a 0 000001 0 000001 0 000001 0 000001 ozt 3 868090 7 073165 10 288240 7 07315 13 50330 19 93345 35 36585 0...

Страница 13: ...00 35 000 0 00001 0 00001 0 00001 0 00001 0 0001 0 0001 0 0001 0 0001 0 0001 ozt 70 7315 135 0330 199 3345 327 9375 199 335 327 940 385 809 771 618 1 125 276 0 0005 0 0005 0 0005 0 0005 0 005 0 005 0...

Страница 14: ...erview of the Controls Touch to access application setup menu Touch to change applications Touch to access available libraries Instructional Messages Touch for information menu Stability Net NET Gross...

Страница 15: ...g units GLP and GMP Data Insert user data for traceability Diagnostics Touch to view library items Communication Touch to view COM Device Settings and Print Settings Factory Reset Touch to view diagno...

Страница 16: ...Balance Refer to the Instruction Manual for more information Standby Touch Standby to shut down the display Note After initial start up in Standby your balance needs no warm up time and is immediately...

Страница 17: ...Taring sets the weight of a container as zero so only the weight of objects held in the container net weight is displayed Manual Tare Place the empty container on the pan and touch Tare when stable Ad...

Страница 18: ...s Calibration Menu x AutoCal internal Calibration Automatic Calibration and Calibration Test functions are available x All other functions are hidden Balance Setup Menu x Stability Indicator Range is...

Страница 19: ...e operation of some features Level Bubble Light not available in EX12001 EX24001 and EX35001 To verify proper operation of the illuminated Level Bubble When selected this light should blink Draft Shie...

Страница 20: ...itch is in the ON position the start up display includes the LOCK ON message Note This switch is also used in conjunction with the Legal for Trade menu item When the Legal for Trade menu is set to ON...

Страница 21: ...ice Manual 15 Ohaus Corporation www ohaus com Application with Two lines Application with Two lines and Message Note If text area is grayed out button cannot be selected 10w x 14h mm 95w x 19h mm 10w...

Страница 22: ...lance is easy Physical damage displayed error code failure to power up and obvious poor performance can usually be repaired by following the instructions in the following sections Some balance issues...

Страница 23: ...r Adapter output voltage using a DVM Input Jack or internal wiring is defective Verify 12VAC at the Power Jack wire connection to the PCB Bad connection between terminal and base Re connect base and t...

Страница 24: ...s in the connected computer See User Manual for proper settings Poor Cable connection Check cable connection Defective Interface or cable Replace Low Reference weight Reference weight is too small Inc...

Страница 25: ...hortcut buttons are gray and no action when pressing them The current application is in procedure Cancel the procedure first Does not retain the correct time and date Battery backup for the real time...

Страница 26: ...minutes after turning the balance on for the balance electronics to stabilize Preventive Maintenance Checklist The balance should be inspected and checked regularly as follows 1 Remove the Pan and Su...

Страница 27: ...xplorer Series Service Manual 21 Ohaus Corporation www ohaus com 3 Draftshield models remove the Top and Side Doors and the Front Panel 4 Remove the Platform Sub Platform Support Caps and Wind Ring as...

Страница 28: ...ase Button Base and Terminal Terminal Cable 3 2 2 Opening the Terminal Module 1 Remove the Terminal Bracket from the Terminal Module Press the two Angular Adjust Buttons to allow the Terminal Bracket...

Страница 29: ...ul not to pull on the cables 4 Disconnect the ribbon cable connecting the two assemblies Using a finger nail or a thin screw driver blade rotate the black cable lock on the connector 90 so that it is...

Страница 30: ...us com 24 Explorer Series Service Manual 3 2 3 Opening the Base Module with a Draftshield 1 Prepare the balance as instructed above 2 Remove the EMC Screw and Plate from the Base 3 Remove the Back Pla...

Страница 31: ...he Rear Support being careful to route the Light and Motor Cable through the holes in the Support 7 Turn the base over and remove the two remaining screws that hold the Top Housing to the Base 8 Turn...

Страница 32: ...om the Connect PCBA The Top Housing can now be separated 3 2 4 Opening the Base Module Top Loader 1 Prepare the balance as instructed above 2 Turn the base on its side and remove the 4 screws that hol...

Страница 33: ...ual 27 Ohaus Corporation www ohaus com 3 Turn the base back on its feet and remove the Top Housing Lay the Top Housing alongside so that the Bubble Level Light wiring can be disconnected 4 Disconnect...

Страница 34: ...Explorer Series Service Manual 3 2 5 Opening the Base Module EX12001 EX24001 EX35001 1 Prepare the balance as instructed above 2 Remove the 2 screws that hold the Spider to the Top Housing and lift o...

Страница 35: ...CHAPTER 3 MAINTENANCE PROCEDURES Explorer Series Service Manual 29 Ohaus Corporation www ohaus com 4 Remove the Top Housing...

Страница 36: ...nd EX35001 please see section 3 4 Note Explorer Load Cells are not serviceable in the field due the special tools and test conditions required to ensure that it is working properly No spare parts are...

Страница 37: ...or cables are not pinched during re assembly InCal cable routing Draftshield models Part No Description Qty Item Part No Description Qty Item Description Qty 1 S t at i c st ri p 1 2 Fi xt ure 1 S N D...

Страница 38: ...Version 8 Originator Effective date Category of distribut Paperless PROCESS HISTORY TRACK OF VISUAL AI CHANGES OPERATION TITL EHS N A Notice 10 Bending line about 1 cm about 3 cm Bending line Item Pa...

Страница 39: ...to fix the cable in the cut of the bottom no small foot side must be outside SHEET EHS N A Notice Non small foot side cable will not be fixed in the Notice 5 6 Clip incale cable incale cable Nipper s...

Страница 40: ...HANGES DOCUM REVIS 1 To be one standard prcess it is better ma side of the clip outside though another side fix the cable Notice OPERATION TITLE EHS N A A ssem 9 Clip small foot side non small foot si...

Страница 41: ...the Load Cell Module Disassembly 1 Open the balance see Section 3 2 Verify that there is no mechanical interference pinched wire or bad solder connection that may be causing the load cell to appear d...

Страница 42: ...re assembly 3 5 REMOVING LOAD CELL PROTECTION SCREWS Attention This process is only needed for 1 2 and 3 decimal scales It is very important to remove the shipping protection screws after assembling t...

Страница 43: ...ps be used when working with electronic components 3 2 5 Terminal 1 Open the Terminal Module see Section 3 2 2 Remove the accessory module if equipped Remove the 2 retaining screws in the mounting pla...

Страница 44: ...l Module above Removing the cable Disconnect the Touch Panel flex cable by sliding the black release Remove the cable from the connector Remove the 4 mounting screws and lift out the Terminal Main PCB...

Страница 45: ...tical The PCB is symmetrical about its length so that the Indicator LED is able to be mounted forwards on both sides The cable connector will face up or down depending on the side it is mounted Loosen...

Страница 46: ...the switch engages the Switch Actuator 4 Remove Main PCB Note For EX12001 EX24001 and EX35001 models please see section 5 Remove the left IR Sensor PCBA see above Disconnect the cables along the top...

Страница 47: ...Remove Main PCB EX12001 EX24001 EX35001 Disconnect the cables along the top edge of the PCB Loosen the 2 retaining screws on each side of the PCB with approximately 2 turns Rotate the retaining washer...

Страница 48: ...nife or your fingers try to roll up the remaining adhesive If the adhesive smears use a cotton cloth to pick up as much as possible As a last resort a solvent such as Nail Polish Remover can be tried...

Страница 49: ...or the User Manual for the procedure to calibrate the Touch Panel 3 9 Replacing the Feet The feet assemblies incorporate a bearing assembly that allows for easy adjustment of the feet There is a load...

Страница 50: ...E REPAIR PROCEDURES Ohaus Corporation www ohaus com 44 Explorer Series Service Manual 3 10 Replacing the Motor and Motor PCBA The feet assemblies incorporate a bearing assembly that allows for easy ad...

Страница 51: ...s be the can cause of frustrating diagnostics TABLE 4 1 CALIBRATION MASS VALUES Model Span Calibration Points Weight Class EX124 50g 100g ASTM Class 1 OIML E2 EX224 100g 150g 200g ASTM Class 1 OIML E2...

Страница 52: ...mber of weight readings If the balance passes the precision test than the following tests should be performed Note This is a reference test for approved models OIML and NTEP It is not a required test...

Страница 53: ...vice menu see Appendix B 1 and adjust and record the following settings x Set the Stability setting to 0 5d its lowest setting x Set the Filter level to Middle x Set the AZT Auto Zero Tracking to 5d i...

Страница 54: ...6 Reading 7 Reading 8 Reading 9 Reading 10 10 Mean ________ 6 Calculate the Delta for each reading and record in the work sheet Delta Reading Mean 7 Calculate the Delta x Delta for each reading and re...

Страница 55: ...as there is no linearity specification The approved models should be able to pass this test so it is still valid to determine balance performance NOTE The balance must pass the Precision and Repeatab...

Страница 56: ...eas of the Pan OCL test may also be referred to as a Shift Test NTEP or an Eccentricity Test OIML The test weight used in this test 1 3 the capacity of the balance See table for the test weight values...

Страница 57: ...omes on 5 Move the weight to location B and record the reading 6 Move the weight to location C and record the reading 7 Move the weight to location D and record the reading 8 Maximum allowable change...

Страница 58: ...e separated into separate sections for the Terminal the Base and the Draftshield To order spare parts identify the required item in the exploded views and parts list then use the Spare Parts List to o...

Страница 59: ...CHAPTER 5 PARTS LISTS DIAGRAMS Explorer Series Service Manual 53 Ohaus Corporation www ohaus com 5 1 TERMINAL SPARE PARTS...

Страница 60: ...r 2 Function Label EX 83033626 3 Top Housing Assembly Terminal EX 30019590 5 Display LCD EX 83033622 6 PCB Main Terminal EX 83033620 7 PCB Interconnect Terminal EX 83033621 8 Bottom Housing Terminal E...

Страница 61: ...CHAPTER 5 PARTS LISTS DIAGRAMS Explorer Series Service Manual 55 Ohaus Corporation www ohaus com 5 2 BASE SPARE PARTS Non Draftshield models 3 6 17 20 20 4 5 8 18 10 9 7 11 6 2 1...

Страница 62: ...MODELS Item Description 1 Pan Rectangular 2 Pan Support Rectangular 4 3 Windshield Rectangular 4 EMC Plate 5 Top Housing Non DS 6 IR Sensor PCBA 7 Base Non DS 8 Level Bubble 9 Main PCBA 10 Connect PCB...

Страница 63: ...CHAPTER 5 PARTS LISTS DIAGRAMS Explorer Series Service Manual 57 Ohaus Corporation www ohaus com 5 3 BASE SPARE PARTS Draftshield models 1 1 2 3 4 5 13 6 10 16 8 12 6 11 18 7 20 20 9...

Страница 64: ...em Description 1 Pan 90mm 1 Pan 130mm 2 Pan Support 130mm 3 Wind ring 90mm 4 EMC Plate DS 5 Top Housing DS 6 IR Sensor PCBA 7 Base 8 Latch Front Panel 9 Level Bubble 10 Main PCBA 11 Connect PCBA 12 Lo...

Страница 65: ...CHAPTER 5 PARTS LISTS DIAGRAMS Explorer Series Service Manual 59 Ohaus Corporation www ohaus com 5 4 BASE SPARE PARTS EX12001 EX24001 EX35001...

Страница 66: ...SP Cables kit EX HiCap 50 30076250 SP PCBA LFT EX HiCap 70 30076276 SP Adjuatable foot EX HiCap 90 30076186 SP Larger Pan EX HiCap 100 30041267 SP Power Cord US EX HiCap 110 30041462 SP Power Cord EU...

Страница 67: ...CHAPTER 5 PARTS LISTS DIAGRAMS Explorer Series Service Manual 61 Ohaus Corporation www ohaus com 5 5 DRAFTSHIELD SPARE PARTS...

Страница 68: ...r Backwall EX 83033684 3 PCBA Door Sensor EX 30069155 4 Glass Assy Right EX 83033679 5 Backwall EX 83033681 6 PCBA Motordriver Board EX 30069154 7 Shield Cover Backwall EX 83033682 8 Cable Kit EX 8303...

Страница 69: ...for each model Note This menu is locked out in Legal for Trade applications To regain access see Section 1 7 Menu Calibration Span Calibration With the balance turned ON and no load on the pan touch M...

Страница 70: ...e Linearization procedures A 3 TOUCH SCREEN CALIBRATION The Touch Screen needs to be re calibrated if the screen does not respond correctly to intended commands A Touch Screen calibration is required...

Страница 71: ...of pinched wiring as this is a likely cause If the wiring is okay verify the voltage 3 3 VDC at the LED connector pins on the PCBA Draft Shield Light Analytical models To verify proper operation of th...

Страница 72: ...alibrations A password is required to access this menu The current password is Explorer SW 1 10 and OHAUS SW 1 03 Software in the initial production units may not have all of the service items shown M...

Страница 73: ...chanical interference a cable connection problem a damaged Main PCB or a damaged load cell 3 Point LINEARITY CALIBRATION A three point linearization is also rarely required and is difficult to perform...

Страница 74: ...Load each numbered weight or group of weights if required in the order indicated No 1 No 2 No 3 No 4 then remove in the correct order No 1 No 4 No 2 No 3 This is done to reduce the affect of the indiv...

Страница 75: ...1000g ASTM Class 1 OIML E2 EX2202 2000g 1000g 2000g 500g 1000g 750g 2000g ASTM Class 1 OIML E2 EX4202 4000g 2000g 4000g 1000g 2000g 3000g 4000g ASTM Class 1 OIML E2 EX6202 6000g 3000g 6000g 1500g 3000...

Страница 76: ...a Explorer balance It is used to re configure the balance to its original parameters in the case of a PCB replacement The tool can also be used to communicate with the balance using commands that are...

Страница 77: ...nes Header text length is up to 20 characters the setting format is H x header line text and H x could get the corresponding header line in the balance Z Same as pressing Zero Key T Same as pressing T...

Страница 78: ...itive value it is used to set the tolerance value vice versa PC Print Checkweighing tolerance xCW Set Checkweighing weight tolerance x Attention when x is a positive value it is used to set the tolera...

Страница 79: ...ntrol for print under stable requirement If the unstable condition continues over 40 seconds balance will respond ES Note 2 Application list Index Application Index Application 0 Weighing 11 Pipette A...

Страница 80: ...the virtual port to the computers USB connector where the balance is connected The port receives the USB signal and reacts to the command The USB Interface includes a CD with the software drivers to c...

Страница 81: ...port numbers to the new virtual port This can be done in the Port Settings of the Device Manager utility found in the Windows Control Panel 3 4 Balance Setup for USB interface 3 4 1 The Ohaus Interfa...

Страница 82: ......

Страница 83: ...steps to upgrade the firmware using a USB flash drive STEPS 1 Copy the EX_FWUPD folder to the root directory of the USB flash drive Note Do not change the folder name It needs to be EX_FWUPD The EX_FW...

Страница 84: ...7 Ohaus Corporation www ohaus com 3 Go to User Menu Diagnostics Data Maintenance Software update 4 Press Start button to start the upgrade process Note Keep the USB flash drive connected and make sure...

Страница 85: ...APPENDIX D FIRMWARE UPGRADE VIA USB Ohaus Corporation www ohaus com 76 Explorer Series Service Manual 5 Wait approximately 10 minutes for the process to finish 6 Restart the balance 78...

Страница 86: ...Ohaus Corporation all rights reserved Registered trademark of Ohaus Corporation The information contained in this manual is believed to be accurate at the time of publication but Ohaus Corporation ass...

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