Teledyne operating instructions Model OT-2 System

4 Maintenance Model OT-2 System

To replace the cell: Figure 4-1

1.Open the enclosure door.

2.Undo the velcro straps.

3.Remove the insulation.

4.The cell block is located in the center of the unit. Unscrew the cap on the bottom of the cell block. The B-2C sensor should drop down once the cap is removed.

INSULATION

B-2C

SENSOR

CAP

Figure 4-1 Cell Block

NOTE: Before the cell is removed from its package, a zero gas with low ppm oxygen flowing at a relative high rate through the cell block can lessen the time it will take the newly installed cell to drop to a zero reading.

3.Remove the new cell from its package, and carefully remove the shorting clip.

WARNING: The sensor used in the Model OT-2 System uses electrolytes which may contain substances that are

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 physician. {See Appendix - Material Safety Data Sheet (MSDS)}.

4-2 Teledyne Analytical Instruments