RKI Instruments Eagle 1 Manual - Manual (Page 56)

49 • Maintenance Eagle Instruction Manual
2. Remove the white hydrophobic filter disk from the top of the
particle filter or from the probe body.
3. Remove the particle filter from the probe body (if installed).
4. Clean the inside of the probe body if necessary.
5. Hold the probe half that has the plastic tube fitting and the probe
tube with the fitting and tube facing down.
6. Place the new cone-shaped particle filter into the probe body so
that the wide part of the filter is facing up.
NOTE: If you have an Eagle that requires a super toxic probe, do not
install the particle filter.
7. Place the new filter disk flat on top of the particle filter. Make sure
it is centered over the particle filter (if installed).
8. Carefully screw the other half of the probe body onto the half with
the filter disk and particle filter (if installed) 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
• startup the Eagle
• 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 Sensors
Electrochemical sensors (O
2
, H
2
S, and CO) gradually deteriorate,
regardless of use, and require periodic replacement. Combustibles
sensor life is typically related to usage, but certain conditions may
affect duration.
The Eagle sensors are easy to replace but do not contain user-