RKI Instruments EAGLE 2 Manual - Manual (Page 93)

EAGLE 2 Operator’s Manual Replacing a Sensor • 83
• 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.
14. Confirm that the main PCB is seated in its slots and that its bottom edge
is resting on the bottom of the bottom case. If the main PCB is not seated
properly, then it may be damaged when the top case is re-installed.
15. Make sure that the top case gasket is fully seated in its groove and
carefully put the top case back on the bottom case. If you have any
difficulty mating the top and bottom cases, inspect the placement of the
main PCB and the placement of the top case gasket.
16. Turn the EAGLE 2 upside down and tighten the three case screws to
secure the top case to the bottom case.
17. Calibrate the new sensors as described in “Chapter 4: Calibration Mode”
on page 55.