96-06434-00-01 revA
Service Manual, Inogen One G3HF
-88-
Instructions for Replacing the Breath Detect:
1. Install the new breath detect by aligning the 6 pins on the bottom of the breath detect with
the corresponding holes on the motherboard (Figure 12). Make sure the pins are fully
seated in the holes and the breath detect is lying flat on the motherboard (Figure 13).
Figure 12: Pins aligned with motherboard holes Figure 13: Fully seated breath detect
2. Plug the Joiner Tube onto the barb on the oxygen sensor (Figure 11).
3. To re-install the motherboard, make sure the chassis pegs are aligned with the holes in
the motherboard. Then reattach the accumulator tubing and the oxygen sensor tubing
(Figure 10). Gently pull on each tube/cable to ensure a complete connection.
4. Reinstall the five screws that attach the motherboard to the chassis (Figure 9). Tighten
screws to 4.5 in-lbs.
5. Install the sensor tube by routing it around the long molded column tube and inserting it
into the quick-connect fitting on the Accumulator. After insertion, pull lightly on the
polyurethane tubing to ensure that it is fully seated in the quick-connect fitting (Figure
8).
6. Connect the Product Manifold harness and the Feed Waste Manifold harnesses (Figure 7
and 6.)
7. Plug the compressor cable back into the motherboard (Figure 5).
Instructions for Replacing the Housing:
1. To re-install the user interface panel, plug the LCD cable back into the motherboard
(Figure 4).
Note orientation of red wire.
Re-attach the cannula tubing to the cannula
connector.
2. Reconnect the UIP cable to the motherboard (Figure 3).
3. Test the function of each button and the LCD. If anything does not work, reseat the
cables in the connectors and check for debris in the connectors.
4. Re-install the four screws that connect the user interface panel to the chassis (Figures 1
and 2). Tighten screws to 5 in-lbs.
5. Place the device on its back side.
6. Seat the feet of the front housing into the corresponding grooves on the chassis (Figure
14) then push down and toward the device to secure the housing in the chassis.
