Teledyne 3020T Maintenance

Trace Oxygen Analyzer Maintenance 5

5-1

Teledyne Analytical Instruments

Maintenance

5.1 Routine Maintenance

Aside from normal cleaning and checking for leaks at the gas connec-

tions, routine maintenance is limited to replacing Micro-Fuel cells and fuses,

and recalibration. For recalibration, see Section 4.4 The Zero and Span

Functions.

WARNING: SEE WARNINGS ON TITLE PAGE OF THIS MANUAL.

5.2 Major Internal Components

All internal components are accessed by unbolting and swinging open

the front cover, as described earlier. The major internal component locations

are shown in Figure 3-1, the cell block is illustrated in Figure 3-2, and the

fuse receptacle is shown in Figure 3-3

The 3020T contains the following major internal components:

• Micro-Fuel Cell (L-2C)

• Stainless steel cell block

• Customer Interface PCB (Power Supply on bottom surface)

• Preamp PCB (Contains Microprocessor)

• Front Panel PCB (Contains Displays)

5 digit LED meter

2 line, 20 character, alphanumeric, VFD display

• Solenoid Operated Gas Control Valves (–C option only).

See the drawings in the Drawings section in back of this manual

for details.

Contents

Main i Teledyne Analytical Instruments OPERATING INSTRUCTIONS FOR Model 3020T Trace Oxygen Analyzer DANGER ii Model 3020T Teledyne Analytical Instruments Copyright 1999 Teledyne Analytical Instruments iii iv Model 3020T v Analysis Mode ........................................................ Page Introduction 1-2 1 Introduction Model 3020T 1.4 Model Designations Page 1-4 1 Introduction Model 3020T Analyze WARNING: THE POWER CABLE MUST BE DISCONNECTED TO FULLY REMOVE POWER FROM THE INSTRUMENT. 1-5 Trace Oxygen Analyzer Introduction 1 1.6 Recognizing Difference Between LCD & VFD 1.7 Equipment Interface CAUTION: The power cable must be disconnected to fully remove power from the instrument. Page 1-7 Trace Oxygen Analyzer Introduction 1 Page 2-1 Trace Oxygen Analyzer Operational Theory 2 Operational Theory 2.1 Introduction 2.2 Micro-Fuel Cell Sensor 2-2 2-3 Trace Oxygen Analyzer Operational Theory 2 2-4 Page 2-6 2 Operational Theory Model 3020T 2.4 Electronics and Signal Processing Page 2-8 2.5 Temperature Control 3-1 Installation 3.1 Unpacking the Analyzer 3.2 Mounting the Analyzer Page Page 3-4 3-5 3-6 3-7 3 Installation Model 3020T Zero Span Zero 3-8 3-9 3-10 3-11 3.4 Installing the Micro-Fuel Cell 3-12 3.5 Gas Connections 3-13 3-14 3.6 Testing the System 4-1 Operation 4.1 Introduction 4.2 Using the Controls 4-2 4-3 4-4 4-5 4.3 The AUTO-CAL Function ON 4.4 The PWD (Password) Function 4-6 4-7 4-8 4.5 The LOGOUT Function 4.6 The VERSION Screen 4-9 4.7 The SELF-TEST Function 4.8 The ZERO and SPAN Functions 4-10 4-11 4-12 4-13 4-14 4.9 The ALARMS Function 4-15 4-16 4.10 The RANGE Function 4-17 4-18 4.11 The CONTRAST Function 4.12 The STANDBY Function 4-19 4.13 The Analysis Mode Page 5-1 Maintenance 5.1 Routine Maintenance WARNING: SEE WARNINGS ON TITLE PAGE OF THIS MANUAL. 5.2 Major Internal Components Page 5-3 5-4 Page 5-6 5-7 5.4 Fuse Replacement 5-8 5.5 System Self Diagnostic Test 5-9 Page A-1 Appendix A-1 Specifications A-2 Appendix Model 3020T A-3 A-2 Recommended 2-Year Spare Parts List Page A-5 3000 SERIES ANALYZERS A-4 A-6 Appendix Model 3020T A-7