Teledyne OT-2 - Oxygen transmitter system - Manual (Page 31)

4-3 Teledyne Analytical Instruments
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.
4.2.1 Cell 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.
4.3 Scrubber 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.
4.4 Filter 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 1
1/16 " 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.