78 • Replacing a Sensor
EAGLE 2 Operator’s Manual
•
Move the hydrophobic filter towards the bottom case side wall and pull the
oxygen sensor out of the flow chamber.
•
Hold the main PCB to support it where the oxygen sensor cable connects to it.
•
Grasp the connector on the end of the sensor cable and pull the connector away
from the main PCB to disconnect it from the main PCB.
9. To remove the H
2
S and CO sensors, do the following:
•
Grasp the sensor firmly and rock it back and forth slightly while pulling on it.
Make sure to note the routing of the sensor cable to the main PCB so that you can
route the replacement sensor cable the same way.
•
If the sensor does not come out of the flow chamber easily enough using this
method, grasp it with a pair of pliers and rock it back and forth slightly while
pulling on it.
CAUTION:
If using pliers to remove a sensor, be careful not to damage the sensor in
case you find that the sensor is still functional and does not need to be
replaced.
•
Hold the main PCB to support it where the sensor cable connects to it.
•
Grasp the connector on the end of the sensor cable and pull the connector away
from the main PCB to disconnect it from the main PCB.
10. Install the new sensor.
11. To install the LEL sensor, do the following:
•
Plug the replacement sensor into the sensor connector on the LEL sensor cable.
•
Insert the LEL sensor into the LEL sensor chamber in the flow chamber.
•
Line up the holes in the LEL sensor bracket with the two standoffs on either side
of the LEL sensor chamber.
•
Install the two sensor bracket screws tightening them a little at a time alternately
to push the sensor into its chamber evenly.
12. To install the oxygen sensor, do the following:
•
Confirm that the sealing O-ring is still in the bottom of the oxygen sensor
chamber in the flow chamber and insert the oxygen sensor face down into the
chamber.
•
Route the sensor cable the same way the old sensor cable was routed and connect
it to the main PCB. Make sure to support the main PCB when making the
connection.
•
Reinstall the oxygen sensor bracket and tighten both bracket screws firmly.
13. To install the H
2
S and CO sensors, do the following:
•
Insert the sensor face down into the sensor chamber in the flow chamber.
•
Push the sensor in until it bottoms out.
•
Route the sensor cable the same way the old sensor cable was routed and connect
it to the main PCB. Make sure to support the main PCB when making the
connection.
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