Teledyne 3020T Storing and Handling Replacement Cells, When to Replace a Cell

Trace Oxygen Analyzer Maintenance 5

5.3.1 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 3020T, 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) or to rough handling.

WARNING: THE SENSOR USED IN THE MODEL 3020T 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 AROUND THE UNIT. WHAT MAY APPEAR TO BE PLAIN WATER COULD CONTAIN ONE OF THESE TOXIC SUBSTANCES. IN CASE OF EYE CONTACT, IMMEDIATELY FLUSH EYES WITH WATER FOR AT LEAST 15 MINUTES. CALL PHYSI- CIAN. (SEE APPENDIX, MATERIAL SAFETY DATA SHEET.)

CAUTION: Do not disturb the integrity of the cell package until the cell is to actually be used. If the cell package is punctured and air is permitted to enter, the cell will require an excessively long time to reach zero after installation (1-2 weeks!).

5.3.2 When to Replace a Cell

The characteristics of the Micro-Fuel Cell show an almost constant output throughout its useful life and then fall off sharply towards zero at the end. Cell failure in the 3020T is usually characterized inability to zero the instrument down to a satisfactorily low ppm reading. When this occurs, the 3020T system alarm trips, and the screen displays a failure message.

#.#ppm Anlz

CELL FAIL/ ZERO HIGH

Teledyne Analytical Instruments 5-3