ADVANTAGE 4000 FACEPIECE
Removing the Exhalation-Valve Housing
1. Spread the U-clip and slide it off the facepiece.
2. Carefully push the bottom of the inlet housing to
remove it.
3. Remove the nosecup.
4. Use the O-ring removal tool to remove and discard the
small O-ring.
Note:
Be careful not to scratch the O-ring groove.
5. Remove and discard the large O-ring.
Disassembling the Nosecup
1. From
inside
, gently push the inlet check valves out of
the nosecup.
7
MSA 9011 (L) Rev. 0 - 10104243