OHAUS Explorer Balances - Default Chapter; Table of Contents

TABLE OF CONTENTS
Ohaus Corporation www.ohaus.com i Explorer
®
Service Manual
Page No.
1 GETTING STARTED 1
1.1 INTRODUCTION 1
1.2 SERVICE FACILITIES 1
1.3 TOOLS AND TEST EQUIPMENT REQUIRED 2
1.4 SPECIFICATIONS 2
1.5 UNIT CAPACITY AND READABILITY 5
1.6 BALANCE OPERATION 8
1.6.1 Overview of the Controls 8
1.6.2 Main Menu and Principal Functions 9
1.6.3 Menu Navigation 9
1.6.4 Changing Settings 10
1.6.5 Functions and Icons 10
1.7 LEGAL FOR TRADE (LFT) 12
1.8 MENU STRUCTURE 13
1.8.1 User Menu 13
1.8.2 Diagnostics Menu 13
1.9 Securing the Menu and Key Lock menu settings 14
1.10 Display Touch Areas 14
2 DIAGNOSTIC GUIDE 16
2.1 TROUBLESHOOTING 16
2.2 SOFTWARE 16
2.3 DIAGNOSTIC GUIDE 16
3 MAINTENANCE / REPAIR PROCEDURES 20
3.1 PREVENTIVE MAINTENANCE 20
3.2 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 Loader) 26
3.2.5 Opening the Base Module (EX12001, EX24001, EX35001) 28
1. Prepare the balance as instructed above. 28
2. Remove the 2 screws that hold the Spider to the Top Housing and lift off the Spider. 28
3. Remove the 7 screws that hold the Top Housing to the Base. 28
4. Remove the Top Housing 29
3.3 REPLACING THE LOAD CELL (not 12001, 24001 and 35001) 29
3.4 REPLACING THE LOAD CELL (12001, 24001 and 35001) 35
3.5 REMOVING LOAD CELL PROTECTION SCREWS 36
3.6 REPLACING THE PRINTED CIRCUIT BOARD ASSEMBLIES (PCBA) 37
3.2.5 Terminal 37
3.2.6 Base 39
3.7 Replacing the Function Label 42
3.8 Replacing the Touch Panel 43
3.9 Replacing the Feet 43
4 TESTING 45
4.1 TEST MASSES REQUIRED 45
4.2 OPERATIONAL TEST 46
4.3 LOAD CELL TEST USING RAMP 46
4.4 PERFORMANCE TESTS 46