Teledyne 3290 - OEM percent oxygen analyzer - Manual (Page 42)

Maintenance Model 3290
Teledyne Analytical Instruments 32
5.2.3 Removing the Oxygen Sensor
No tools are required to replace the cell in the instrument for either
the standard E-2 sensor or the optional C-5 or C-5F sensors.
To remove a spent or damaged E-2 oxygen sensor:
1. Disconnect the Power Source from the Unit.
2. Unplug the connector from the spent cell.
3. Remove the spent cell by unscrewing it, counterclockwise, from
the cell block.
4. Dispose of the cell in a safe manner, and in accordance with
local laws.
Depending on the application, some units are shipped with the C-5
or C-5F oxygen sensor. The procedure for installing the cell is different
for these sensors. If your instrument is equipped with a C-5 or C-5F
oxygen sensor:
To remove a C-5 or C-5F sensor:
1. Disconnect power to the analyzer.
2. Remove probe assembly from sensor manifold.
3. Unscrew (counterclockwise) the cap at the bottom of the sensor
holder and the cell will drop out of the cavity.
4. Dispose of the spent cell in a manner consistent with local and
federal guidelines.
5.2.4 Installing the Oxygen Sensor
To install a new E-2 oxygen sensor:
CAUTION: DO NOT SCRATCH, PUNCTURE, OR DAMAGE THE
SENSING MEMBRANE OF THE OXYGEN SENSOR.
DAMAGE TO THE MEMBRANE WILL REQUIRE
REPLACEMENT OF THE OXYGEN SENSOR.
1. Disconnect power to the analyzer.
2. Remove the new oxygen sensor from its protective bag, being
careful not to lose the O-ring at the base of the threaded portion
of the cell.
3. Replace the cell on the cell holder by screwing it clockwise into
the cell block until it is held firmly in the socket.