MSA G1 Facepiece - Speech Diaphragm Replacement Guide

G1 Facepiece
22
Maintenance
GB
Installing the Spring Retainer and Exhalation Valve
6.4 Replacing the Speech Diaphragm
(1) Unbutton the nose cup.
(2) Unscrew the threaded socket from the mask inside with the special tool.
(3) Remove the O-ring and the speech diaphragm.
(4) Insert the new speech diaphragm:
a) Place the speech diaphragm into the component housing with the yellow side visible.
b) Reinsert the O-ring.
(5) Screw in the threaded socket with the special tool (Torque: 5 Nm).
(6) Perform a tightness test ( chapter 6.5).
(1) Insert the exhalation valve stem into the housing
assembly.
NOTE: Ensure the valve stem is inserted into the center slot.
(2) Fit the retainer spring over the ring of the exhalation
valve.
(3) Align the forks on the flat surface of the component
housing and slide forward until each fork snaps into
place.