EAGLE 2 Operator’s Manual
Maintenance • 181
15. 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, it may be
damaged when the top case is re-installed.
16. 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.
17. Turn the EAGLE 2 upside down and tighten the three case screws to secure the top
case to the bottom case.
18. Calibrate the ESM-01 channel as described in “ESM-01 Calibration” on page 166.
Replacing the H
2
S Scrubber in the SO
2
and HCN Sensors
1. Verify that the EAGLE 2 is off.
2. Place the EAGLE 2 upside down on a flat surface or hold it upside down.
3. Unscrew the three case screws until they disengage from the top case. They are
captive screws so they will not fall off of the bottom case.
4. Turn the EAGLE 2 right side up and carefully lift the top case away from the bottom
case. Be careful not to lift it so far that it pulls on the main PCB with the cable that
connects the top case to the main PCB.
5. Lay the top case down next to the bottom case to allow access to the flow system.
6. Locate the ESM-01 sensor. It has a twelve wire cable with a connector that mates to
an ESM-01 sub PCB that is installed on the main PCB and is normally located next to
the pump. Figure 37 on page 165 shows an ESM-01 sensor in a typical location.
7. Unscrew and remove the two screws that hold down the ESM-01 sensor bracket.
8. Grasp the sensor firmly and pull it out of the ESM-01 flow chamber. Rock it back and
forth gently if necessary to pull it out. Take care not to pull the cable from the sub
PCB.
9. Rotate the locking lever counterclockwise on the cable connector that mates to the
ESM-01 sensor to unlock it.
10. Unplug the ESM-01 sensor from the cable.
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