Personal Ambulatory Oxygen System
Provider Technical Manual
82
6. Pull the Power Manager PCB 1” out of the unit case. Gently push the Compressor Box away from the Power
Manager PCB by 1/8”. Disconnect the 2 wire harnesses and the ribbon cable shown in Figure 59. Remove the
Power Manager PC Board.
Figure 59: ATF Motor, 9-Volt Battery, and Control PC Board Communications Wire Harness Removal.
7. Position the new Power Manager PCB 1” out of the unit case as shown in Figure 60. Gently push the
Compressor Box away from the Power Manager PCB by 1/8”. Connect the 2 wire harnesses and the ribbon
cable. Position the Power Manager PCB into the slots on the Unit Case.
8. Install the fan with the 2 screws and lightly tighten as shown in Figure 57. Apply Loctite 425 Thread Locker on
the tips of the screws before installing. Ensure that it is blowing down as indicated by the arrow on the side of
the Fan.
9. Install the Battery Bridge PCB and 4 wire harnesses shown in Figure 57.
10. Screw in the 4 screws shown in Figure 56.
11. Hold onto the Compressor Box and lift the Bottom Case in standing position. Insert the Exhaust Tube into the
slot of the Exhaust Duct as shown on Figure 58 above. Ensure that it is secure without any gaps.
12. Install the Unit Cover as described in the section Remove and Replace the Unit Cover.
ATF Motor
Wire Harness
Control PC Board
Communications
Cable
9-Volt Battery
Harness
