CAIRE FreeStyle Manual page 56

5. Remove and discard foam from the top of the oval opening. (See Figure 13.2)
Steps 6 and 7 require extreme caution to ensure the black pressure sensor
(U3 for FreeStyle or U9 for FreeStyle 5) is not damaged.
6. Remove the adjustable nozzle by gently pulling it upward until it comes out of the left side
retaining clips. When the left side is out, pull the nozzle to the left to completely remove it
from its cradle.
Portable Oxygen Concentrator
Figure 13.1: J5 8-Pin Connector
Figure 13.2: Foam Removal
MN220-1 B 56