10
90USA - CONNeCTINg The fACe MASk
1.
Connect the breathing valve to the mask by pushing the valve into the
connection piece and turning it counter clockwise until the bayonet coupling is
locked. [Fig. 13]
Fig. 13
aTTenTIOn!
WHEn PUSHInG THE BREATHInG VALVE In PLACE, THE FInGERS SHALL nOT BE POSITIOnEd On
THE InTERnAL SPEECH dIAPHRAGM SInCE THIS CAn dAMAGE IT.
2.
Mount the external speech cone in the face mask. Tighten the hand screws by
hand. [Fig. 14]
Fig. 14
90USA - DISCONNeCTINg The fACe MASk
1.
Loosen the two hand screws and remove the external speech cone.
2.
Turn the breathing valve clockwise until it disengages from the bayonet coupling
and pull away from the mask.
Summary of Contents for 90USA
Page 1: ...user manual 90USA and 90USA S 30249A01...
Page 21: ......
