Teledyne 3000TB, Operating Instructions Manual

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Trace Oxygen Analyzer Maintenance
Teledyne Analytical Instruments 67
Maintenance
5.1 Routine Maintenance
Aside from normal cleaning and checking for leaks at the gas
connections, 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 the title page of this manual.
5.2 Major Internal Components
All internal components are accessed by unlatching and swinging
open the front cover, as described earlier. The major internal component
locations are shown in Figure 5-1, the cell block is illustrated in Figure
5-2, and the fuse receptacle is shown in Figure 5-3.
The 3000TB contains the following major internal components:

Micro-Fuel Cell —Insta Trace P/N B71875 (std.)

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.