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Trace Oxygen Analyzer Maintenance
Teledyne Analytical Instruments 57
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
Calibration.
Warning: See warnings on the title page of this manual.
5.2 Cell Replacement
The L-2 Micro-Fuel Cell is a sealed electrochemical transducer
with no electrolyte to change or electrodes to clean. When the cell
reaches the end of its useful life, it is replaced. The spent fuel cell should
be discarded according to local regulations. This section describes fuel
cell care as well as when and how to replace it.
5.2.1 Storing and Handling Replacement Cells
To have a replacement cell available when it is needed, it is recom-
mended that one spare cell be purchased 9-10 months after
commissioning the 3000TA, or shortly before the end of the cell's one
year warranty period.
CAUTION: DO NOT STOCKPILE CELLS. THE WARRANTY
PERIOD STARTS ON THE DAY OF SHIPMENT.
The spare cell should be carefully stored in an area that is not
subject to large variations in ambient temperature (75°F nominal, 24°C)
or to rough handling.
WARNING: The sensor used in the model 3000TA Trace Oxygen
Analyzer uses electrolytes which contain toxic
substances, mainly Lead and potassium hydroxide,
that can be harmful if touched, swallowed, or
Inhaled. Avoid contact with any fluid or powder in or