Personal Ambulatory Oxygen System
Provider Technical Manual
46
2. Unscrew the wing nut that hold the HEPA filter.
Figure 23: Wing Nut.
3. Unscrew the Clear HEPA filter and discard Filter & small O-Ring.
Figure 24: Unscrewing the HEPA Filter.
4. Install the new small O-ring and HEPA filter.
Figure 25 Installing the new HEPA Filter.