Teledyne OT-2 operating instructions Scrubber Replacement

Model OT-2 System Maintenance 4

4.Place the new cell on the cap with the sensing surface face down and the gold contact rings up.

5.Position the cell and cap so that the cell is inside the cell block. Press up on the cap and rotate. Tighten the cap screws.

4.2.1Cell Warranty

The cell warranty is sensor specific. Please contact Teledyne Electronic Technologies/ Analytical Instruments on explicit war- ranty on sensors.

NOTE: Evidence of damage due to tampering or mishandling will render the cell warranty null and void.

4.3Scrubber Replacement

To ensure proper operation of the OT-2 System, it is recom- mended to replace the scrubber every 6 months or more fre- quently if the sensor is reaching end of life prematurely.

It is important that the replacement of the scrubber be com- pleted within one hour of it's removal to prevent back diffusion of oxygen from the atmosphere to the sensor.

During scrubber replacement, it is recommended that the 3- way valve is switched to "Span Gas". This will minimize the system recovery time.

NOTE: If the sensor is exposed to air through back diffusion, from the atmosphere it may cause the sensor to re-stabilize slowly.

4.4Filter Servicing

To ensure the proper performance and sample flow, it is recommended that the sample filter be inspected when the cell is replaced. The filter requires both a 1" and a 11/16" open end wrench to remove the filter bowl. Turn off the sample flow valve prior to servicing filter. The filter should be cleaned or replaced as required.

Teledyne Analytical Instruments 4-3