RKI Instruments EAGLE 2 Manual - Manual (Page 87)

EAGLE 2 Operator’s Manual Replacing the Hydrophobic Filter • 77
7. Place the new filter disk flat on top of the particle filter. Make sure it is
centered over the particle filter.
8. Carefully screw the other half of the probe body onto the half with the
particle filter and filter disk while keeping the probe oriented vertically to
keep the disk centered.
9. When you feel the O-ring being compressed, grasp both ends of the probe
and tighten them together very firmly to ensure a seal.
10. To test the seal, do the following.
• install the probe on the EAGLE 2
• startup the EAGLE 2
• confirm that a low flow alarm occurs when you cover the end of the
probe tube with your finger
• if a low flow alarm does not occur, hand tighten the probe further
• if a low flow alarm still does not occur when you cover the probe tube
with your finger, disassemble the probe, inspect the placement of the
O-rings and filter disk, reassemble the probe, and re-test it.
Replacing the Hydrophobic Filter
Replace the hydrophobic filter inside the bottom case when it becomes dirty
or clogged. An unexplained low flow alarm may indicate that the
hydrophobic filter is dirty and needs to be replaced.
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.